Release: v3.10.0

Stack from top for recorded intervals (the first lap in the top).
Stack from bottom for recording intervals (the last lap in the top).

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,5 +1,13 @@
 # Thanks for your contribution.
 
+## PLEASE REMOVE
+To support us in providing a nice (and fast) open-source experience:
+1. Verify that the tests are passing
+2. Check that the code is properly formatted (using AndroidStudio's autoformatter)
+3. Provide write access to the [branch](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/allowing-changes-to-a-pull-request-branch-created-from-a-fork)
+4. If the PR is not ready for review, please submit it as a [draft](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests#draft-pull-requests)
+## PLEASE REMOVE
+
 **Describe the pull request**
 A clear and concise description of what the pull request changes/adds.
 

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "gradle"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

CONTRIBUTING.md

@@ -0,0 +1,35 @@
+# How to contribute?
+
+## Testing 
+
+Just use OpenTracks and tell us what can be improved by opening an issue [here](https://github.com/OpenTracksApp/OpenTracks/issues/new/choose)
+
+If we broke things (happens now and then), please tell us also.
+
+## Coding new features
+
+You have a cool idea for a feature that is missing in OpenTracks?
+And you would like to help by implementing it?
+If not, you can just take a look at the [issue tracker](https://github.com/OpenTracksApp/OpenTracks/issues).
+
+Advices:
+* creating an issue beforehand might be a good idea
+  Sometimes it is helpful to discuss your idea and also your implementation approach first.
+  We may be able to give you some hints on how to tackle the problem.
+  It also makes merging your changes easier and, usually, faster.
+* please only add new dependencies if is absolutely necessary
+  If you need to:
+  * tell us why those are required,
+  * what alternatives are existing, and
+  * why you choose this dependency.
+  And also verify that the license(s) are compatible with _Apache 2.0_ as well as open-source.
+ 
+## Coding conventions
+
+None so far.
+Just keep it simple.
+And follow the _scout rule_. 
+
+You can take a look at existing code and get a feeling for it.
+
+Please autoformat your code using AndroidStudio's code formatter. 

RELEASE.sh

@@ -0,0 +1,51 @@
+#!/bin/bash
+
+set -e
+
+CHANGELOG_DIR="fastlane/metadata/android/en-US/changelogs/"
+
+echo "Checking main branch"
+git checkout main
+VERSIONID=$(git rev-list HEAD --count main)
+CHANGELOG_FILE="$CHANGELOG_DIR/$VERSIONID.txt"
+
+git diff --exit-code || echo -e "\nWARNING WARNING WARNING WARNING WARNING: this branch contains uncommit changes."
+
+#TODO Execute all tests: we are destroying data, running on a real device.
+# ./gradlew connectedCheck
+
+# Changelog
+echo -e "\nPrevious changelog\n------------"
+PREVIOUS_CHANGELOG=$(find "$CHANGELOG_DIR" -iname "[[:digit:]]**.txt" | sort -n | tail -1)
+sed 's/^/>/' "$PREVIOUS_CHANGELOG"
+
+#For F-Droid, a version starts with a 'v'
+read -p $'\n\nPlease enter the versionname (e.g., v3.9.5):\n> v' VERSIONNAME
+VERSIONNAME="v$VERSIONNAME"
+
+cp "$CHANGELOG_DIR/next_release.txt" "$CHANGELOG_FILE"
+sed -i "s/(versionName)/$VERSIONNAME/" "$CHANGELOG_FILE"
+
+echo -e "\nGit commit since last release\n------------"
+git log $(git describe --tags --abbrev=0)..HEAD --no-merges --oneline
+
+echo -e "\nPlease edit the changelog for the new release"
+gedit -w "$CHANGELOG_FILE"
+git add "$CHANGELOG_FILE"
+
+echo "Updating build.gradle"
+sed -i s/versionCode\ .*/versionCode\ "$VERSIONID"/g build.gradle
+sed -i s/versionName\ .*/versionName\ "\"$VERSIONNAME\""/g build.gradle
+
+git diff
+
+COMMIT_MESSAGE="Release: $VERSIONNAME"
+echo -e "\nCommit message will be: '$COMMIT_MESSAGE'"
+
+echo -e "\nPress ENTER, if everything looks good."
+read
+
+git add -u
+git commit -m "$COMMIT_MESSAGE"
+
+echo -e "Next steps:\n1. Push to Github\n2. Create release on Github: https://github.com/OpenTracksApp/OpenTracks/releases"

build.gradle

@@ -47,15 +47,15 @@ android {
 
     defaultConfig {
         applicationId "de.dennisguse.opentracks"
-        versionCode 3541
-        versionName "v3.9.2"
+        versionCode 3611
+        versionName "v3.10.0"
 
         buildConfigField "String", "VERSION_NAME_FULL", "\"${getVersionName()}\""
 
 
 
         minSdkVersion 21
-        targetSdkVersion 30
+        targetSdkVersion 29
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
@@ -87,12 +87,12 @@ dependencies {
     implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.preference:preference:1.1.1'
     implementation 'androidx.documentfile:documentfile:1.0.1'
-    implementation 'com.google.android.material:material:1.2.0'
+    implementation 'com.google.android.material:material:1.2.1'
     implementation 'com.android.support.constraint:constraint-layout:2.0.1'
 
     androidTestImplementation 'androidx.test:core:1.3.0'
     androidTestImplementation 'androidx.test.ext:junit:1.1.2'
     androidTestImplementation 'androidx.test:rules:1.3.0'
     androidTestImplementation 'androidx.test:runner:1.3.0'
-    androidTestImplementation 'org.mockito:mockito-android:3.4.6'
+    androidTestImplementation 'org.mockito:mockito-android:3.5.10'
 }

fastlane/metadata/android/en-US/changelogs/3544.txt

@@ -0,0 +1,4 @@
+v3.9.3: OpenTracks
+
+Bugfixes:
+- Fixed export all tracks bug.

fastlane/metadata/android/en-US/changelogs/3573.txt

@@ -0,0 +1,10 @@
+v3.9.4: OpenTracks
+
+Changes:
+- Added interval computation
+- Voice announcements present last interval statistics
+- Settings: Bluetooth icon is animated
+
+Bugfix:
+- GPS was not turned off when stopping a recording
+- Show on map via KML/KMZ/GPX was broken due to refactoring

fastlane/metadata/android/en-US/changelogs/3584.txt

@@ -0,0 +1,8 @@
+v3.9.5: OpenTracks
+
+Changes:
+- UI shows speed only with one fractional digit
+
+Bugfix:
+- App crash in search (due to Track.Id refactoring)
+- Track list did now show if a recording was ongoing (due to Track.Id refactoring)

fastlane/metadata/android/en-US/changelogs/3611.txt

@@ -0,0 +1,10 @@
+v3.10.0: OpenTracks
+
+Changes:
+- Elevation gain via barometer
+- Add splash screen
+- Android 11/F-Droid: downgrade to targetSDK 29 (v1 signature)
+  see https://gitlab.com/fdroid/fdroidserver/-/issues/827
+
+Bugfix:
+- Several fixes due to trackId refactoring

fastlane/metadata/android/en-US/changelogs/next_release.txt

@@ -1,4 +1,4 @@
-(tbd): OpenTracks
+(versionName): OpenTracks
 
 Changes:
 -

src/androidTest/java/de/dennisguse/opentracks/chart/ChartValueSeriesTest.java

@@ -19,13 +19,16 @@ import androidx.annotation.NonNull;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import de.dennisguse.opentracks.R;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests {@link ChartValueSeries}.
  *
@@ -60,16 +63,16 @@ public class ChartValueSeriesTest {
 
     @Test
     public void testInitialConditions() {
-        Assert.assertEquals(1, series.getInterval());
-        Assert.assertEquals(0, series.getMinMarkerValue());
-        Assert.assertEquals(5, series.getMaxMarkerValue());
-        Assert.assertTrue(series.isEnabled());
+        assertEquals(1, series.getInterval());
+        assertEquals(0, series.getMinMarkerValue());
+        assertEquals(5, series.getMaxMarkerValue());
+        assertTrue(series.isEnabled());
     }
 
     @Test
     public void testEnabled() {
         series.setEnabled(false);
-        Assert.assertFalse(series.isEnabled());
+        assertFalse(series.isEnabled());
     }
 
     @Test
@@ -77,9 +80,9 @@ public class ChartValueSeriesTest {
         series.update(new ChartPoint(0));
         series.update(new ChartPoint(10));
         series.updateDimension();
-        Assert.assertEquals(100, series.getInterval());
-        Assert.assertEquals(0, series.getMinMarkerValue());
-        Assert.assertEquals(500, series.getMaxMarkerValue());
+        assertEquals(100, series.getInterval());
+        assertEquals(0, series.getMinMarkerValue());
+        assertEquals(500, series.getMaxMarkerValue());
     }
 
     @Test
@@ -87,9 +90,9 @@ public class ChartValueSeriesTest {
         series.update(new ChartPoint(0));
         series.update(new ChartPoint(901));
         series.updateDimension();
-        Assert.assertEquals(1000, series.getInterval());
-        Assert.assertEquals(0, series.getMinMarkerValue());
-        Assert.assertEquals(5000, series.getMaxMarkerValue());
+        assertEquals(1000, series.getInterval());
+        assertEquals(0, series.getMinMarkerValue());
+        assertEquals(5000, series.getMaxMarkerValue());
     }
 
     @Test
@@ -97,8 +100,8 @@ public class ChartValueSeriesTest {
         series.update(new ChartPoint(220));
         series.update(new ChartPoint(250));
         series.updateDimension();
-        Assert.assertEquals(100, series.getInterval());
-        Assert.assertEquals(200, series.getMinMarkerValue());
-        Assert.assertEquals(700, series.getMaxMarkerValue());
+        assertEquals(100, series.getInterval());
+        assertEquals(200, series.getMinMarkerValue());
+        assertEquals(700, series.getMaxMarkerValue());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/DescriptionGeneratorTest.java

@@ -21,7 +21,6 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -31,6 +30,8 @@ import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.StringUtils;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests for {@link DescriptionGenerator}.
  *
@@ -85,7 +86,7 @@ public class DescriptionGeneratorTest {
                 + "Elevation gain: 6000 m (19685 ft)<br>"
                 + "Recorded: " + StringUtils.formatDateTime(context, START_TIME) + "<br>";
 
-        Assert.assertEquals(expected, descriptionGenerator.generateTrackDescription(track, true));
+        assertEquals(expected, descriptionGenerator.generateTrackDescription(track, true));
     }
 
     @Test
@@ -119,7 +120,7 @@ public class DescriptionGeneratorTest {
                         + "Elevation gain: 6000 m (19685 ft)<br>"
                         + "Recorded: " + StringUtils.formatDateTime(context, START_TIME) + "<br>";
 
-        Assert.assertEquals(expected, descriptionGenerator.generateTrackDescription(track, true));
+        assertEquals(expected, descriptionGenerator.generateTrackDescription(track, true));
     }
 
 
@@ -130,7 +131,7 @@ public class DescriptionGeneratorTest {
     public void testWriteDistance() {
         StringBuilder builder = new StringBuilder();
         descriptionGenerator.writeDistance(1100, builder, R.string.description_total_distance, "<br>");
-        Assert.assertEquals("Total distance: 1.10 km (0.7 mi)<br>", builder.toString());
+        assertEquals("Total distance: 1.10 km (0.7 mi)<br>", builder.toString());
     }
 
     /**
@@ -140,7 +141,7 @@ public class DescriptionGeneratorTest {
     public void testWriteTime() {
         StringBuilder builder = new StringBuilder();
         descriptionGenerator.writeTime(1000, builder, R.string.description_total_time, "<br>");
-        Assert.assertEquals("Total time: 00:01<br>", builder.toString());
+        assertEquals("Total time: 00:01<br>", builder.toString());
     }
 
     /**
@@ -150,7 +151,7 @@ public class DescriptionGeneratorTest {
     public void testWriteSpeed() {
         StringBuilder builder = new StringBuilder();
         descriptionGenerator.writeSpeed(1.1, builder, R.string.description_average_speed, "\n");
-        Assert.assertEquals("Average speed: 3.96 km/h (2.5 mi/h)\n", builder.toString());
+        assertEquals("Average speed: 3.96 km/h (2.5 mi/h)\n", builder.toString());
     }
 
     /**
@@ -160,7 +161,7 @@ public class DescriptionGeneratorTest {
     public void testWriteElevation() {
         StringBuilder builder = new StringBuilder();
         descriptionGenerator.writeElevation(4.2, builder, R.string.description_min_elevation, "<br>");
-        Assert.assertEquals("Min elevation: 4 m (14 ft)<br>", builder.toString());
+        assertEquals("Min elevation: 4 m (14 ft)<br>", builder.toString());
     }
 
     /**
@@ -170,6 +171,6 @@ public class DescriptionGeneratorTest {
     public void testWritePace() {
         StringBuilder builder = new StringBuilder();
         descriptionGenerator.writePace(1.1, builder, R.string.description_average_pace_in_minute, "\n");
-        Assert.assertEquals("Average pace: 15:09 min/km (24:23 min/mi)\n", builder.toString());
+        assertEquals("Average pace: 15:09 min/km (24:23 min/mi)\n", builder.toString());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/SearchEngineTest.java

@@ -24,7 +24,6 @@ import androidx.test.platform.app.InstrumentationRegistry;
 import androidx.test.rule.provider.ProviderTestRule;
 
 import org.junit.After;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -35,13 +34,17 @@ import java.util.List;
 
 import de.dennisguse.opentracks.content.SearchEngine.ScoredResult;
 import de.dennisguse.opentracks.content.SearchEngine.SearchQuery;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.CustomContentProvider;
 import de.dennisguse.opentracks.content.provider.CustomSQLiteOpenHelper;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+
 /**
  * Tests for {@link SearchEngine}.
  * These are not meant to be quality tests, but instead feature-by-feature tests.
@@ -99,36 +102,36 @@ public class SearchEngineTest {
         return insertTrack(title, "", "", hoursAgo);
     }
 
-    private Waypoint.Id insertWaypoint(String title, String description, String category, double distance, long hoursAgo, Track.Id trackId) {
+    private Marker.Id insertWaypoint(String title, String description, String category, double distance, long hoursAgo, Track.Id trackId) {
         Location location = new Location(HERE);
         location.setLatitude(location.getLatitude() + distance);
         location.setLongitude(location.getLongitude() + distance);
         if (hoursAgo >= 0) {
             location.setTime(NOW - hoursAgo * 1000L * 60L * 60L);
         }
-        Waypoint waypoint = new Waypoint(location);
+        Marker waypoint = new Marker(location);
         waypoint.setName(title);
         waypoint.setDescription(description);
         waypoint.setCategory(category);
         waypoint.setTrackId(trackId);
 
-        Uri uri = providerUtils.insertWaypoint(waypoint);
-        return new Waypoint.Id(ContentUris.parseId(uri));
+        Uri uri = providerUtils.insertMarker(waypoint);
+        return new Marker.Id(ContentUris.parseId(uri));
     }
 
-    private Waypoint.Id insertWaypoint(String title, String description, String category) {
+    private Marker.Id insertWaypoint(String title, String description, String category) {
         return insertWaypoint(title, description, category, 0.0, -1, null);
     }
 
-    private Waypoint.Id insertWaypoint(String title, double distance) {
+    private Marker.Id insertWaypoint(String title, double distance) {
         return insertWaypoint(title, "", "", distance, -1, null);
     }
 
-    private Waypoint.Id insertWaypoint(String title, long hoursAgo) {
+    private Marker.Id insertWaypoint(String title, long hoursAgo) {
         return insertWaypoint(title, "", "", 0.0, hoursAgo, null);
     }
 
-    private Waypoint.Id insertWaypoint(String title, long hoursAgo, Track.Id trackId) {
+    private Marker.Id insertWaypoint(String title, long hoursAgo, Track.Id trackId) {
         return insertWaypoint(title, "", "", 0.0, hoursAgo, trackId);
     }
 
@@ -168,12 +171,12 @@ public class SearchEngineTest {
         // - one which will match in title and description
         // - one which will match in all fields
         insertWaypoint("bb", "cc", "dd");
-        Waypoint.Id descriptionMatchId = insertWaypoint("bb", "aa", "cc");
-        Waypoint.Id categoryMatchId = insertWaypoint("bb", "cc", "aa");
-        Waypoint.Id titleMatchId = insertWaypoint("aa", "bb", "cc");
-        Waypoint.Id titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
-        Waypoint.Id titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
-        Waypoint.Id allMatchId = insertWaypoint("aa", "ba", "ca");
+        Marker.Id descriptionMatchId = insertWaypoint("bb", "aa", "cc");
+        Marker.Id categoryMatchId = insertWaypoint("bb", "cc", "aa");
+        Marker.Id titleMatchId = insertWaypoint("aa", "bb", "cc");
+        Marker.Id titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
+        Marker.Id titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
+        Marker.Id allMatchId = insertWaypoint("aa", "ba", "ca");
 
         SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -190,9 +193,9 @@ public class SearchEngineTest {
         // - one waypoint which will match by title
         // - one track which won't match
         // - one track which will match by title
-        Waypoint.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
+        Marker.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
         insertWaypoint("bb", "cc", "dd");
-        Waypoint.Id titleWaypointId = insertWaypoint("aa", "bb", "cc");
+        Marker.Id titleWaypointId = insertWaypoint("aa", "bb", "cc");
         insertTrack("bb", "cc", "dd");
         Track.Id trackId = insertTrack("aa", "bb", "cc");
 
@@ -200,7 +203,7 @@ public class SearchEngineTest {
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
-        Assert.assertEquals(results.toString(), 3, results.size());
+        assertEquals(results.toString(), 3, results.size());
         assertTrackResult(trackId, results.get(0));
         assertWaypointResult(titleWaypointId, results.get(1));
         assertWaypointResult(descriptionWaypointId, results.get(2));
@@ -209,9 +212,9 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointDistance() {
         // All results match text, but they're at difference distances from the user.
-        Waypoint.Id farFarAwayId = insertWaypoint("aa", 0.3);
-        Waypoint.Id nearId = insertWaypoint("ab", 0.1);
-        Waypoint.Id farId = insertWaypoint("ac", 0.2);
+        Marker.Id farFarAwayId = insertWaypoint("aa", 0.3);
+        Marker.Id nearId = insertWaypoint("ab", 0.1);
+        Marker.Id farId = insertWaypoint("ac", 0.2);
 
         SearchQuery query = new SearchQuery("a", HERE, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -236,9 +239,9 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointRecent() {
         // All results match text, but they're were recorded at different times.
-        Waypoint.Id oldestId = insertWaypoint("aa", 2);
-        Waypoint.Id recentId = insertWaypoint("ab", 0);
-        Waypoint.Id oldId = insertWaypoint("ac", 1);
+        Marker.Id oldestId = insertWaypoint("aa", 2);
+        Marker.Id recentId = insertWaypoint("ab", 0);
+        Marker.Id oldId = insertWaypoint("ac", 1);
 
         SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -263,8 +266,8 @@ public class SearchEngineTest {
     @Test
     public void testSearchCurrentTrackWaypoint() {
         // All results match text, but one of them is in the current track.
-        Waypoint.Id otherId = insertWaypoint("aa", 1, new Track.Id(456));
-        Waypoint.Id currentId = insertWaypoint("ab", 1, new Track.Id(123));
+        Marker.Id otherId = insertWaypoint("aa", 1, new Track.Id(456));
+        Marker.Id currentId = insertWaypoint("ab", 1, new Track.Id(123));
 
         SearchQuery query = new SearchQuery("a", null, new Track.Id(123), NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -274,9 +277,9 @@ public class SearchEngineTest {
     }
 
     private void assertTrackResult(Track.Id trackId, ScoredResult result) {
-        Assert.assertNotNull("Not a track", result.track);
-        Assert.assertNull("Ambiguous result", result.waypoint);
-        Assert.assertEquals(trackId, result.track.getId());
+        assertNotNull("Not a track", result.track);
+        assertNull("Ambiguous result", result.marker);
+        assertEquals(trackId, result.track.getId());
     }
 
     private void assertTrackResults(List<ScoredResult> results, Track.Id... trackIds) {
@@ -286,34 +289,34 @@ public class SearchEngineTest {
         }
 
         String errMsg = "Expected IDs=" + Arrays.toString(longTrackIds) + "; results=" + results;
-        Assert.assertEquals(results.size(), trackIds.length);
+        assertEquals(results.size(), trackIds.length);
         for (int i = 0; i < results.size(); i++) {
             ScoredResult result = results.get(i);
-            Assert.assertNotNull(errMsg, result.track);
-            Assert.assertNull(errMsg, result.waypoint);
-            Assert.assertEquals(errMsg, trackIds[i], result.track.getId());
+            assertNotNull(errMsg, result.track);
+            assertNull(errMsg, result.marker);
+            assertEquals(errMsg, trackIds[i], result.track.getId());
         }
     }
 
-    private void assertWaypointResult(Waypoint.Id waypointId, ScoredResult result) {
-        Assert.assertNotNull("Not a waypoint", result.waypoint);
-        Assert.assertNull("Ambiguous result", result.track);
-        Assert.assertEquals(waypointId, result.waypoint.getId());
+    private void assertWaypointResult(Marker.Id waypointId, ScoredResult result) {
+        assertNotNull("Not a waypoint", result.marker);
+        assertNull("Ambiguous result", result.track);
+        assertEquals(waypointId, result.marker.getId());
     }
 
-    private void assertWaypointResults(List<ScoredResult> results, Waypoint.Id... waypointIds) {
+    private void assertWaypointResults(List<ScoredResult> results, Marker.Id... waypointIds) {
         long[] longWaypointIds = new long[waypointIds.length];
         for (int i = 0; i < waypointIds.length; i++) {
             longWaypointIds[i] = waypointIds[i].getId();
         }
 
         String errMsg = "Expected IDs=" + Arrays.toString(longWaypointIds) + "; results=" + results;
-        Assert.assertEquals(results.size(), waypointIds.length);
+        assertEquals(results.size(), waypointIds.length);
         for (int i = 0; i < results.size(); i++) {
             ScoredResult result = results.get(i);
-            Assert.assertNotNull(errMsg, result.waypoint);
-            Assert.assertNull(errMsg, result.track);
-            Assert.assertEquals(errMsg, waypointIds[i], result.waypoint.getId());
+            assertNotNull(errMsg, result.marker);
+            assertNull(errMsg, result.track);
+            assertEquals(errMsg, waypointIds[i], result.marker.getId());
         }
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/data/TestDataUtil.java

@@ -68,9 +68,9 @@ public class TestDataUtil {
         trackPoint.setSpeed(5f + (i / 10));
 
         trackPoint.setHeartRate_bpm(100f + i);
-        trackPoint.setCyclingCadence_rpm(200f + i);
         trackPoint.setCyclingCadence_rpm(300f + i);
         trackPoint.setPower(400f + i);
+        trackPoint.setElevationGain(500f + i);
         return trackPoint;
     }
 
@@ -93,12 +93,12 @@ public class TestDataUtil {
      * @param location The location.
      * @return the Waypoint created.
      */
-    public static Waypoint createWaypointWithPhoto(Context context, Track.Id trackId, Location location) throws IOException {
+    public static Marker createWaypointWithPhoto(Context context, Track.Id trackId, Location location) throws IOException {
         File dstFile = new File(FileUtils.getImageUrl(context, trackId));
         dstFile.createNewFile();
         Uri photoUri = FileUtils.getUriForFile(context, dstFile);
         String photoUrl = photoUri.toString();
 
-        return new Waypoint("Waypoint name", "Waypoint description", "Waypoint category", "", trackId, 0.0, 0, location, photoUrl);
+        return new Marker("Waypoint name", "Waypoint description", "Waypoint category", "", trackId, 0.0, 0, location, photoUrl);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/provider/CustomContentProviderTest.java

@@ -25,9 +25,9 @@ import androidx.test.core.app.ApplicationProvider;
 import org.junit.Before;
 import org.junit.Test;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -67,7 +67,7 @@ public class CustomContentProviderTest {
         assertEquals(TrackPointsColumns.CONTENT_TYPE, customContentProvider.getType(TrackPointsColumns.CONTENT_URI_BY_ID));
         assertEquals(TrackPointsColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(TrackPointsColumns.CONTENT_URI_BY_TRACKID.buildUpon(), 1).build()));
 
-        assertEquals(WaypointsColumns.CONTENT_TYPE, customContentProvider.getType(WaypointsColumns.CONTENT_URI));
-        assertEquals(WaypointsColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(WaypointsColumns.CONTENT_URI.buildUpon(), 1).build()));
+        assertEquals(MarkerColumns.CONTENT_TYPE, customContentProvider.getType(MarkerColumns.CONTENT_URI));
+        assertEquals(MarkerColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(MarkerColumns.CONTENT_URI.buildUpon(), 1).build()));
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/provider/CustomContentProviderUtilsTest.java

@@ -25,7 +25,6 @@ import android.util.Pair;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -39,17 +38,22 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.UUID;
 
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.TestDataUtil;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.UUIDUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.when;
 
 /**
@@ -122,13 +126,13 @@ public class CustomContentProviderUtilsTest {
         try (TrackPointIterator it = contentProviderUtils.getTrackPointLocationIterator(trackId, -1L, descending)) {
             while (it.hasNext()) {
                 TrackPoint loc = it.next();
-                Assert.assertNotNull(loc);
+                assertNotNull(loc);
                 locations.add(loc);
                 // Make sure the IDs are returned in the right order.
-                Assert.assertEquals(descending ? lastPointId - locations.size() + 1
+                assertEquals(descending ? lastPointId - locations.size() + 1
                         : lastPointId - numPoints + locations.size(), it.getTrackPointId());
             }
-            Assert.assertEquals(numPoints, locations.size());
+            assertEquals(numPoints, locations.size());
         }
     }
 
@@ -138,7 +142,7 @@ public class CustomContentProviderUtilsTest {
         track.setName("Test: " + id.getId());
         contentProviderUtils.insertTrack(track);
         track = contentProviderUtils.getTrack(id);
-        Assert.assertNotNull(track);
+        assertNotNull(track);
 
         TrackPoint[] trackPoints = new TrackPoint[numPoints];
         for (int i = 0; i < numPoints; ++i) {
@@ -162,8 +166,8 @@ public class CustomContentProviderUtilsTest {
             }
         }
 
-        Assert.assertTrue(numPoints == 0 || lastPointId > 0);
-        Assert.assertEquals(numPoints, counter);
+        assertTrue(numPoints == 0 || lastPointId > 0);
+        assertEquals(numPoints, counter);
 
         return lastPointId;
     }
@@ -195,8 +199,8 @@ public class CustomContentProviderUtilsTest {
         when(cursorMock.getString(columnIndex)).thenReturn(name);
 
         Track track = contentProviderUtils.createTrack(cursorMock);
-        Assert.assertEquals(trackId, track.getId());
-        Assert.assertEquals(name, track.getName());
+        assertEquals(trackId, track.getId());
+        assertEquals(name, track.getName());
     }
 
     /**
@@ -208,25 +212,25 @@ public class CustomContentProviderUtilsTest {
         Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
-        contentProviderUtils.insertWaypoint(waypoint);
+        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        contentProviderUtils.insertMarker(waypoint);
 
         ContentResolver contentResolver = context.getContentResolver();
         Cursor tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(1, tracksCursor.getCount());
+        assertEquals(1, tracksCursor.getCount());
         Cursor tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(10, tracksPointsCursor.getCount());
-        Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        assertEquals(10, tracksPointsCursor.getCount());
+        Cursor waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(1, waypointCursor.getCount());
         // Delete all.
         contentProviderUtils.deleteAllTracks(context);
         // Check whether all have been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(0, tracksCursor.getCount());
+        assertEquals(0, tracksCursor.getCount());
         tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(0, tracksPointsCursor.getCount());
-        waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(0, waypointCursor.getCount());
+        assertEquals(0, tracksPointsCursor.getCount());
+        waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(0, waypointCursor.getCount());
     }
 
     /**
@@ -239,32 +243,32 @@ public class CustomContentProviderUtilsTest {
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
-        contentProviderUtils.insertWaypoint(waypoint);
+        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        contentProviderUtils.insertMarker(waypoint);
 
         ContentResolver contentResolver = context.getContentResolver();
         Cursor tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(1, tracksCursor.getCount());
+        assertEquals(1, tracksCursor.getCount());
         Cursor tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(10, tracksPointsCursor.getCount());
-        Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        assertEquals(10, tracksPointsCursor.getCount());
+        Cursor waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(1, waypointCursor.getCount());
         // Check waypoint has photo and it's in the external storage.
-        Assert.assertTrue(waypoint.hasPhoto());
+        assertTrue(waypoint.hasPhoto());
         File dir = FileUtils.getPhotoDir(context, trackId);
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
-        Assert.assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
+        assertTrue(dir.exists());
         // Delete all.
         contentProviderUtils.deleteAllTracks(context);
         // Check whether all have been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(0, tracksCursor.getCount());
+        assertEquals(0, tracksCursor.getCount());
         tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(0, tracksPointsCursor.getCount());
-        waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(0, waypointCursor.getCount());
-        Assert.assertFalse(dir.exists());
+        assertEquals(0, tracksPointsCursor.getCount());
+        waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(0, waypointCursor.getCount());
+        assertFalse(dir.exists());
     }
 
     /**
@@ -283,26 +287,26 @@ public class CustomContentProviderUtilsTest {
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);
 
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId2));
+        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId2));
         waypoint.setTrackId(trackId1);
-        contentProviderUtils.insertWaypoint(waypoint);
+        contentProviderUtils.insertMarker(waypoint);
 
         ContentResolver contentResolver = context.getContentResolver();
         Cursor tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(3, tracksCursor.getCount());
+        assertEquals(3, tracksCursor.getCount());
         Cursor tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(20, tracksPointsCursor.getCount());
-        Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        assertEquals(20, tracksPointsCursor.getCount());
+        Cursor waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(1, waypointCursor.getCount());
         // Delete one track.
         contentProviderUtils.deleteTrack(context, trackId1);
         // Check whether all data of a track has been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(2, tracksCursor.getCount());
+        assertEquals(2, tracksCursor.getCount());
         tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(20, tracksPointsCursor.getCount());
-        waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(0, waypointCursor.getCount());
+        assertEquals(20, tracksPointsCursor.getCount());
+        waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(0, waypointCursor.getCount());
     }
 
     /**
@@ -322,41 +326,41 @@ public class CustomContentProviderUtilsTest {
 
         // Insert a waypoint in tracks trackId and trackId + 1.
         TrackPoint trackPoint1 = contentProviderUtils.getLastValidTrackPoint(trackId1);
-        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId1, trackPoint1.getLocation());
-        contentProviderUtils.insertWaypoint(waypoint1);
+        Marker waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId1, trackPoint1.getLocation());
+        contentProviderUtils.insertMarker(waypoint1);
         File dir1 = FileUtils.getPhotoDir(context, trackId1);
 
         TrackPoint trackPoint2 = contentProviderUtils.getLastValidTrackPoint(trackId2);
-        Waypoint waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId2, trackPoint2.getLocation());
-        contentProviderUtils.insertWaypoint(waypoint2);
+        Marker waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId2, trackPoint2.getLocation());
+        contentProviderUtils.insertMarker(waypoint2);
         File dir2 = FileUtils.getPhotoDir(context, trackId2);
 
         // Check.
         ContentResolver contentResolver = context.getContentResolver();
         Cursor tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(3, tracksCursor.getCount());
+        assertEquals(3, tracksCursor.getCount());
         Cursor tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(30, tracksPointsCursor.getCount());
-        Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(2, waypointCursor.getCount());
-        Assert.assertTrue(waypoint1.hasPhoto());
-        Assert.assertTrue(dir1.isDirectory());
-        Assert.assertEquals(1, dir1.list().length);
-        Assert.assertTrue(dir1.exists());
-        Assert.assertTrue(dir2.isDirectory());
-        Assert.assertEquals(1, dir2.list().length);
-        Assert.assertTrue(dir2.exists());
+        assertEquals(30, tracksPointsCursor.getCount());
+        Cursor waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(2, waypointCursor.getCount());
+        assertTrue(waypoint1.hasPhoto());
+        assertTrue(dir1.isDirectory());
+        assertEquals(1, dir1.list().length);
+        assertTrue(dir1.exists());
+        assertTrue(dir2.isDirectory());
+        assertEquals(1, dir2.list().length);
+        assertTrue(dir2.exists());
         // Delete one track.
         contentProviderUtils.deleteTrack(context, trackId1);
         // Check whether all data of a track has been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
-        Assert.assertEquals(2, tracksCursor.getCount());
+        assertEquals(2, tracksCursor.getCount());
         tracksPointsCursor = contentResolver.query(TrackPointsColumns.CONTENT_URI_BY_ID, null, null, null, TrackPointsColumns._ID);
-        Assert.assertEquals(20, tracksPointsCursor.getCount());
-        waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
-        Assert.assertFalse(dir1.exists());
-        Assert.assertTrue(dir2.exists());
+        assertEquals(20, tracksPointsCursor.getCount());
+        waypointCursor = contentResolver.query(MarkerColumns.CONTENT_URI, null, null, null, MarkerColumns._ID);
+        assertEquals(1, waypointCursor.getCount());
+        assertFalse(dir1.exists());
+        assertTrue(dir2.exists());
     }
 
     /**
@@ -373,8 +377,8 @@ public class CustomContentProviderUtilsTest {
         List<Track> allTracks = contentProviderUtils.getTracks();
 
         // then
-        Assert.assertEquals(initialTrackNumber + 1, allTracks.size());
-        Assert.assertEquals(trackId, allTracks.get(allTracks.size() - 1).getId());
+        assertEquals(initialTrackNumber + 1, allTracks.size());
+        assertEquals(trackId, allTracks.get(allTracks.size() - 1).getId());
     }
 
     /**
@@ -384,7 +388,7 @@ public class CustomContentProviderUtilsTest {
     public void testGetLastTrack() {
         Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
-        Assert.assertEquals(trackId, contentProviderUtils.getLastTrack().getId());
+        assertEquals(trackId, contentProviderUtils.getLastTrack().getId());
     }
 
     /**
@@ -397,7 +401,7 @@ public class CustomContentProviderUtilsTest {
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
 
         // when / then
-        Assert.assertNotNull(contentProviderUtils.getTrack(trackId));
+        assertNotNull(contentProviderUtils.getTrack(trackId));
     }
 
     /**
@@ -411,7 +415,7 @@ public class CustomContentProviderUtilsTest {
         contentProviderUtils.insertTrack(track);
 
         // when / then
-        Assert.assertNotNull(contentProviderUtils.getTrack(track.getUuid()));
+        assertNotNull(contentProviderUtils.getTrack(track.getUuid()));
     }
 
     /**
@@ -428,14 +432,14 @@ public class CustomContentProviderUtilsTest {
 
         // when / then
         contentProviderUtils.insertTrack(track);
-        Assert.assertEquals(nameOld, contentProviderUtils.getTrack(trackId).getName());
+        assertEquals(nameOld, contentProviderUtils.getTrack(trackId).getName());
         track.setName(nameNew);
         contentProviderUtils.updateTrack(track);
-        Assert.assertEquals(nameNew, contentProviderUtils.getTrack(trackId).getName());
+        assertEquals(nameNew, contentProviderUtils.getTrack(trackId).getName());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#createContentValues(Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#createContentValues(Marker)}.
      */
     @Test
     public void testCreateContentValues_waypoint() {
@@ -451,7 +455,7 @@ public class CustomContentProviderUtilsTest {
         statistics.setTotalTime(1500L);
         statistics.setMovingTime(700L);
         statistics.setTotalDistance(750.0);
-        statistics.setTotalElevationGain(50.0);
+        statistics.setTotalElevationGain(50.0f);
         statistics.setMaxSpeed(60.0);
         statistics.setMaxElevation(1250.0);
         statistics.setMinElevation(1200.0);
@@ -459,30 +463,30 @@ public class CustomContentProviderUtilsTest {
         track.first.setTrackStatistics(statistics);
         contentProviderUtils.insertTrack(track.first);
 
-        Waypoint waypoint = new Waypoint(track.second[0]);
+        Marker waypoint = new Marker(track.second[0]);
         waypoint.setDescription(TEST_DESC);
-        contentProviderUtils.insertWaypoint(waypoint);
+        contentProviderUtils.insertMarker(waypoint);
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(contentResolverMock);
 
-        Waypoint.Id waypointId = new Waypoint.Id(System.currentTimeMillis());
+        Marker.Id waypointId = new Marker.Id(System.currentTimeMillis());
         waypoint.setId(waypointId);
         ContentValues contentValues = contentProviderUtils.createContentValues(waypoint);
-        Assert.assertEquals(waypointId.getId(), contentValues.get(WaypointsColumns._ID));
-        Assert.assertEquals((int) (TestDataUtil.INITIAL_LONGITUDE * 1000000), contentValues.get(WaypointsColumns.LONGITUDE));
-        Assert.assertEquals(TEST_DESC, contentValues.get(WaypointsColumns.DESCRIPTION));
+        assertEquals(waypointId.getId(), contentValues.get(MarkerColumns._ID));
+        assertEquals((int) (TestDataUtil.INITIAL_LONGITUDE * 1000000), contentValues.get(MarkerColumns.LONGITUDE));
+        assertEquals(TEST_DESC, contentValues.get(MarkerColumns.DESCRIPTION));
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#createWaypoint(Cursor)}.
+     * Tests the method {@link ContentProviderUtils#createMarker(Cursor)}.
      */
     @Test
     public void testCreateWaypoint() {
         int startColumnIndex = 1;
         int columnIndex = startColumnIndex;
-        when(cursorMock.getColumnIndexOrThrow(WaypointsColumns._ID)).thenReturn(columnIndex++);
-        when(cursorMock.getColumnIndexOrThrow(WaypointsColumns.NAME)).thenReturn(columnIndex++);
-        when(cursorMock.getColumnIndexOrThrow(WaypointsColumns.TRACKID)).thenReturn(columnIndex++);
+        when(cursorMock.getColumnIndexOrThrow(MarkerColumns._ID)).thenReturn(columnIndex++);
+        when(cursorMock.getColumnIndexOrThrow(MarkerColumns.NAME)).thenReturn(columnIndex++);
+        when(cursorMock.getColumnIndexOrThrow(MarkerColumns.TRACKID)).thenReturn(columnIndex++);
         columnIndex = startColumnIndex;
         // Id
         when(cursorMock.isNull(columnIndex++)).thenReturn(false);
@@ -501,15 +505,15 @@ public class CustomContentProviderUtilsTest {
         long trackId = 11L;
         when(cursorMock.getLong(columnIndex++)).thenReturn(trackId);
 
-        Waypoint waypoint = contentProviderUtils.createWaypoint(cursorMock);
-        Assert.assertEquals(id, waypoint.getId().getId());
-        Assert.assertEquals(name, waypoint.getName());
-        Assert.assertEquals(trackId, waypoint.getTrackId().getId());
+        Marker waypoint = contentProviderUtils.createMarker(cursorMock);
+        assertEquals(id, waypoint.getId().getId());
+        assertEquals(name, waypoint.getName());
+        assertEquals(trackId, waypoint.getTrackId().getId());
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
+     * {@link ContentProviderUtils#deleteMarker(Context, Marker.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
@@ -518,26 +522,26 @@ public class CustomContentProviderUtilsTest {
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
-        Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint1.setDescription(TEST_DESC);
         waypoint1.setTrackId(trackId);
-        contentProviderUtils.insertWaypoint(waypoint1);
+        contentProviderUtils.insertMarker(waypoint1);
 
         // Check insert was done.
-        Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
+        assertEquals(contentProviderUtils.getMarkerCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
+        Marker.Id waypoint1Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint1)));
 
         // Delete
-        contentProviderUtils.deleteWaypoint(context, waypoint1Id);
+        contentProviderUtils.deleteMarker(context, waypoint1Id);
 
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertNull(contentProviderUtils.getMarker(waypoint1Id));
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
+     * {@link ContentProviderUtils#deleteMarker(Context, Marker.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
@@ -547,32 +551,32 @@ public class CustomContentProviderUtilsTest {
 
         // Insert at first.
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
-        contentProviderUtils.insertWaypoint(waypoint1);
+        Marker waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        contentProviderUtils.insertMarker(waypoint1);
 
         // Check insert was done.
-        Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
+        assertEquals(contentProviderUtils.getMarkerCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
+        Marker.Id waypoint1Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint1)));
 
         // Check waypoint has photo and it's in the external storage.
-        Assert.assertTrue(waypoint1.hasPhoto());
+        assertTrue(waypoint1.hasPhoto());
         File dir = FileUtils.getPhotoDir(context, trackId);
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
-        Assert.assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
+        assertTrue(dir.exists());
 
         // Delete
-        contentProviderUtils.deleteWaypoint(context, waypoint1Id);
+        contentProviderUtils.deleteMarker(context, waypoint1Id);
 
         // Check waypoint doesn't exists and photo folder was deleted.
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
-        Assert.assertFalse(dir.exists());
+        assertNull(contentProviderUtils.getMarker(waypoint1Id));
+        assertFalse(dir.exists());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)} when there is more than one waypoint in the track.
+     * Tests the method {@link ContentProviderUtils#deleteMarker(Context, Marker.Id)} when there is more than one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_hasNextWayPoint() {
@@ -596,67 +600,67 @@ public class CustomContentProviderUtilsTest {
 //        TestDataUtil.insertTrackWithLocations(contentProviderUtils, track);
 
         // Insert at first.
-        Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint1.setDescription(MOCK_DESC);
         waypoint1.setTrackId(trackId);
-        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
+        Marker.Id waypoint1Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint1)));
 
-        Waypoint waypoint2 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint2 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint2.setDescription(MOCK_DESC);
         waypoint2.setTrackId(trackId);
-        Waypoint.Id waypoint2Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint2)));
+        Marker.Id waypoint2Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint2)));
 
         // Delete
-        Assert.assertNotNull(contentProviderUtils.getWaypoint(waypoint1Id));
-        contentProviderUtils.deleteWaypoint(context, waypoint1Id);
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertNotNull(contentProviderUtils.getMarker(waypoint1Id));
+        contentProviderUtils.deleteMarker(context, waypoint1Id);
+        assertNull(contentProviderUtils.getMarker(waypoint1Id));
 
-        Assert.assertEquals(MOCK_DESC, contentProviderUtils.getWaypoint(waypoint2Id).getDescription());
+        assertEquals(MOCK_DESC, contentProviderUtils.getMarker(waypoint2Id).getDescription());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(Track.Id)}.
+     * Tests the method {@link ContentProviderUtils#getNextMarkerNumber(Track.Id)}.
      */
     @Test
     public void testGetNextWaypointNumber() {
         Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
-        Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint1.setTrackId(trackId);
-        Waypoint waypoint2 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint2 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint2.setTrackId(trackId);
-        Waypoint waypoint3 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint3 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint3.setTrackId(trackId);
-        Waypoint waypoint4 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint4 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint4.setTrackId(trackId);
-        contentProviderUtils.insertWaypoint(waypoint1);
-        contentProviderUtils.insertWaypoint(waypoint2);
-        contentProviderUtils.insertWaypoint(waypoint3);
-        contentProviderUtils.insertWaypoint(waypoint4);
+        contentProviderUtils.insertMarker(waypoint1);
+        contentProviderUtils.insertMarker(waypoint2);
+        contentProviderUtils.insertMarker(waypoint3);
+        contentProviderUtils.insertMarker(waypoint4);
 
-        Assert.assertEquals(4, contentProviderUtils.getNextWaypointNumber(trackId));
+        assertEquals(4, contentProviderUtils.getNextMarkerNumber(trackId));
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#insertWaypoint(Waypoint)} and
-     * {@link ContentProviderUtils#getWaypoint(Waypoint.Id)}.
+     * Tests the method {@link ContentProviderUtils#insertMarker(Marker)} and
+     * {@link ContentProviderUtils#getMarker(Marker.Id)}.
      */
     @Test
     public void testInsertAndGetWaypoint() {
         Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
 
-        Assert.assertEquals(TEST_DESC, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertEquals(TEST_DESC, contentProviderUtils.getMarker(waypointId).getDescription());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#updateWaypoint(Context, Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#updateMarker(Context, Marker)}.
      */
     @Test
     public void testUpdateWaypoint() {
@@ -664,21 +668,21 @@ public class CustomContentProviderUtilsTest {
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
 
         // Update
-        waypoint = contentProviderUtils.getWaypoint(waypointId);
+        waypoint = contentProviderUtils.getMarker(waypointId);
         waypoint.setDescription(TEST_DESC_NEW);
-        contentProviderUtils.updateWaypoint(context, waypoint);
+        contentProviderUtils.updateMarker(context, waypoint);
 
-        Assert.assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getMarker(waypointId).getDescription());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#updateWaypoint(Context, Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#updateMarker(Context, Marker)}.
      */
     @Test
     public void testUpdateWaypoint_withPhoto() throws IOException {
@@ -689,32 +693,32 @@ public class CustomContentProviderUtilsTest {
 
         // Insert at first.
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
 
         File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
 
         // Update
-        waypoint = contentProviderUtils.getWaypoint(waypointId);
+        waypoint = contentProviderUtils.getMarker(waypointId);
         waypoint.setName(TEST_NAME_NEW);
         waypoint.setDescription(TEST_DESC_NEW);
-        contentProviderUtils.updateWaypoint(context, waypoint);
+        contentProviderUtils.updateMarker(context, waypoint);
 
-        Assert.assertEquals(TEST_NAME_NEW, contentProviderUtils.getWaypoint(waypointId).getName());
-        Assert.assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
-        Assert.assertTrue(waypoint.hasPhoto());
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        assertEquals(TEST_NAME_NEW, contentProviderUtils.getMarker(waypointId).getName());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getMarker(waypointId).getDescription());
+        assertTrue(waypoint.hasPhoto());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#updateWaypoint(Context, Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#updateMarker(Context, Marker)}.
      */
     @Test
     public void testUpdateWaypoint_delPhotoAndDir() throws IOException {
@@ -725,31 +729,31 @@ public class CustomContentProviderUtilsTest {
 
         // Insert at first.
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
 
         File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
 
         // Update
-        waypoint = contentProviderUtils.getWaypoint(waypointId);
+        waypoint = contentProviderUtils.getMarker(waypointId);
         waypoint.setName(TEST_NAME_NEW);
         waypoint.setDescription(TEST_DESC_NEW);
         waypoint.setPhotoUrl(null);
-        contentProviderUtils.updateWaypoint(context, waypoint);
+        contentProviderUtils.updateMarker(context, waypoint);
 
-        Assert.assertEquals(TEST_NAME_NEW, contentProviderUtils.getWaypoint(waypointId).getName());
-        Assert.assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
-        Assert.assertFalse(waypoint.hasPhoto());
-        Assert.assertFalse(dir.exists());
+        assertEquals(TEST_NAME_NEW, contentProviderUtils.getMarker(waypointId).getName());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getMarker(waypointId).getDescription());
+        assertFalse(waypoint.hasPhoto());
+        assertFalse(dir.exists());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#updateWaypoint(Context, Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#updateMarker(Context, Marker)}.
      */
     @Test
     public void testUpdateWaypoint_delPhotoNotDir() throws IOException {
@@ -760,30 +764,30 @@ public class CustomContentProviderUtilsTest {
 
         // Insert two waypoints with photos.
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        Waypoint otherWaypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
+        Marker otherWaypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         otherWaypoint.setDescription(TEST_DESC);
         otherWaypoint.setTrackId(trackId);
-        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
-        contentProviderUtils.insertWaypoint(otherWaypoint);
+        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
+        contentProviderUtils.insertMarker(otherWaypoint);
 
         File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(2, dir.list().length);
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(2, dir.list().length);
 
         // Update one waypoint deleting photo.
-        waypoint = contentProviderUtils.getWaypoint(waypointId);
+        waypoint = contentProviderUtils.getMarker(waypointId);
         waypoint.setPhotoUrl(null);
-        contentProviderUtils.updateWaypoint(context, waypoint);
+        contentProviderUtils.updateMarker(context, waypoint);
 
-        Assert.assertEquals(TEST_DESC, contentProviderUtils.getWaypoint(waypointId).getDescription());
-        Assert.assertFalse(waypoint.hasPhoto());
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        assertEquals(TEST_DESC, contentProviderUtils.getMarker(waypointId).getDescription());
+        assertFalse(waypoint.hasPhoto());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
     }
 
     /**
@@ -798,9 +802,9 @@ public class CustomContentProviderUtilsTest {
 
         // when / then
         contentProviderUtils.bulkInsertTrackPoint(track.second, trackId);
-        Assert.assertEquals(20, contentProviderUtils.getTrackPointCursor(trackId, -1L, 1000, false).getCount());
+        assertEquals(20, contentProviderUtils.getTrackPointCursor(trackId, -1L, 1000, false).getCount());
         contentProviderUtils.bulkInsertTrackPoint(Arrays.copyOfRange(track.second, 0, 8), trackId);
-        Assert.assertEquals(28, contentProviderUtils.getTrackPointCursor(trackId, -1L, 1000, false).getCount());
+        assertEquals(28, contentProviderUtils.getTrackPointCursor(trackId, -1L, 1000, false).getCount());
     }
 
     /**
@@ -839,11 +843,11 @@ public class CustomContentProviderUtilsTest {
         TrackPoint trackPoint = contentProviderUtils.createTrackPoint(cursorMock);
 
         // then
-        Assert.assertEquals(longitude, trackPoint.getLongitude(), 0.01);
-        Assert.assertEquals(latitude, trackPoint.getLatitude(), 0.01);
-        Assert.assertEquals(time, trackPoint.getTime(), 0.01);
-        Assert.assertEquals(speed, trackPoint.getSpeed(), 0.01);
-        Assert.assertFalse(trackPoint.hasHeartRate());
+        assertEquals(longitude, trackPoint.getLongitude(), 0.01);
+        assertEquals(latitude, trackPoint.getLatitude(), 0.01);
+        assertEquals(time, trackPoint.getTime(), 0.01);
+        assertEquals(speed, trackPoint.getSpeed(), 0.01);
+        assertFalse(trackPoint.hasHeartRate());
     }
 
     /**
@@ -857,7 +861,7 @@ public class CustomContentProviderUtilsTest {
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         contentProviderUtils.insertTrackPoint(TestDataUtil.createTrackPoint(22), trackId);
-        Assert.assertEquals(11, contentProviderUtils.getTrackPoints(trackId).size());
+        assertEquals(11, contentProviderUtils.getTrackPoints(trackId).size());
     }
 
     @Test
@@ -876,10 +880,10 @@ public class CustomContentProviderUtilsTest {
 
         // then
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertTrue(trackPoints.get(10).hasHeartRate());
-        Assert.assertEquals(trackPoint.getHeartRate_bpm(), trackPoints.get(10).getHeartRate_bpm(), 0.01);
-        Assert.assertEquals(trackPoint.getCyclingCadence_rpm(), trackPoints.get(10).getCyclingCadence_rpm(), 0.01);
-        Assert.assertEquals(trackPoint.getPower(), trackPoints.get(10).getPower(), 0.01);
+        assertTrue(trackPoints.get(10).hasHeartRate());
+        assertEquals(trackPoint.getHeartRate_bpm(), trackPoints.get(10).getHeartRate_bpm(), 0.01);
+        assertEquals(trackPoint.getCyclingCadence_rpm(), trackPoints.get(10).getCyclingCadence_rpm(), 0.01);
+        assertEquals(trackPoint.getPower(), trackPoints.get(10).getPower(), 0.01);
     }
 
     /**
@@ -914,7 +918,7 @@ public class CustomContentProviderUtilsTest {
         Cursor cursor = contentProviderUtils.getTrackPointCursor(trackId, trackpointIds[1], 5, true);
 
         // then
-        Assert.assertEquals(2, cursor.getCount());
+        assertEquals(2, cursor.getCount());
     }
 
     /**
@@ -936,7 +940,7 @@ public class CustomContentProviderUtilsTest {
         Cursor cursor = contentProviderUtils.getTrackPointCursor(trackId, trackpointIds[8], 5, false);
 
         // then
-        Assert.assertEquals(2, cursor.getCount());
+        assertEquals(2, cursor.getCount());
     }
 
     /**
@@ -960,12 +964,12 @@ public class CustomContentProviderUtilsTest {
 
         // then
         for (int i = 0; i < trackpointIds.length; i++) {
-            Assert.assertTrue(trackPointIterator.hasNext());
+            assertTrue(trackPointIterator.hasNext());
             TrackPoint trackPoint = trackPointIterator.next();
-            Assert.assertEquals(startTrackPointId - i, trackPointIterator.getTrackPointId());
+            assertEquals(startTrackPointId - i, trackPointIterator.getTrackPointId());
             checkLocation((trackpointIds.length - 1) - i, trackPoint.getLocation());
         }
-        Assert.assertFalse(trackPointIterator.hasNext());
+        assertFalse(trackPointIterator.hasNext());
     }
 
     /**
@@ -990,13 +994,13 @@ public class CustomContentProviderUtilsTest {
 
         // then
         for (int i = 0; i < trackpointIds.length; i++) {
-            Assert.assertTrue(trackPointIterator.hasNext());
+            assertTrue(trackPointIterator.hasNext());
             TrackPoint trackPoint = trackPointIterator.next();
-            Assert.assertEquals(startTrackPointId + i, trackPointIterator.getTrackPointId());
+            assertEquals(startTrackPointId + i, trackPointIterator.getTrackPointId());
 
             checkLocation(i, trackPoint.getLocation());
         }
-        Assert.assertFalse(trackPointIterator.hasNext());
+        assertFalse(trackPointIterator.hasNext());
     }
 
     /**
@@ -1006,16 +1010,16 @@ public class CustomContentProviderUtilsTest {
      * @param location the location to be checked
      */
     private void checkLocation(int i, Location location) {
-        Assert.assertEquals(TestDataUtil.INITIAL_LATITUDE + (double) i / 10000.0, location.getLatitude(), 0.01);
-        Assert.assertEquals(TestDataUtil.INITIAL_LONGITUDE - (double) i / 10000.0, location.getLongitude(), 0.01);
-        Assert.assertEquals((float) i / 100.0f, location.getAccuracy(), 0.01);
-        Assert.assertEquals(i * TestDataUtil.ALTITUDE_INTERVAL, location.getAltitude(), 0.01);
+        assertEquals(TestDataUtil.INITIAL_LATITUDE + (double) i / 10000.0, location.getLatitude(), 0.01);
+        assertEquals(TestDataUtil.INITIAL_LONGITUDE - (double) i / 10000.0, location.getLongitude(), 0.01);
+        assertEquals((float) i / 100.0f, location.getAccuracy(), 0.01);
+        assertEquals(i * TestDataUtil.ALTITUDE_INTERVAL, location.getAltitude(), 0.01);
     }
 
     @Test
     public void testFormatIdListForUri() {
-        Assert.assertEquals("", ContentProviderUtils.formatIdListForUri());
-        Assert.assertEquals("12", ContentProviderUtils.formatIdListForUri(new Track.Id(12)));
-        Assert.assertEquals("42,43,44", ContentProviderUtils.formatIdListForUri(new Track.Id(42), new Track.Id(43), new Track.Id(44)));
+        assertEquals("", ContentProviderUtils.formatIdListForUri());
+        assertEquals("12", ContentProviderUtils.formatIdListForUri(new Track.Id(12)));
+        assertEquals("42,43,44", ContentProviderUtils.formatIdListForUri(new Track.Id(42), new Track.Id(43), new Track.Id(44)));
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/provider/CustomSQLiteOpenHelperTest.java

@@ -18,9 +18,9 @@ import org.junit.runner.RunWith;
 import java.util.HashMap;
 import java.util.Map;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
@@ -45,7 +45,7 @@ public class CustomSQLiteOpenHelperTest {
     @VisibleForTesting
     public static Map<String, String> getTableSQL(SQLiteDatabase db) {
         HashMap<String, String> tableSQL = new HashMap<>();
-        try (Cursor cursor = db.query("sqlite_master", new String[]{"name", "SQL"}, "name IN ('" + TracksColumns.TABLE_NAME + "', '" + TrackPointsColumns.TABLE_NAME + "', '" + WaypointsColumns.TABLE_NAME + "')", null, null, null, "name")) {
+        try (Cursor cursor = db.query("sqlite_master", new String[]{"name", "SQL"}, "name IN ('" + TracksColumns.TABLE_NAME + "', '" + TrackPointsColumns.TABLE_NAME + "', '" + MarkerColumns.TABLE_NAME + "')", null, null, null, "name")) {
             if (cursor != null) {
                 while (cursor.moveToNext()) {
                     tableSQL.put(cursor.getString(0), cursor.getString(1));
@@ -106,8 +106,8 @@ public class CustomSQLiteOpenHelperTest {
             assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE));
             assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE_INDEX));
 
-            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE));
-            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE_INDEX));
+            assertTrue(hasSqlCreate(db, MarkerColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, MarkerColumns.CREATE_TABLE_INDEX));
         } catch (Exception e) {
             fail();
         }
@@ -140,13 +140,13 @@ public class CustomSQLiteOpenHelperTest {
 
         assertEquals(tablesByCreate.get(TracksColumns.TABLE_NAME), tableByUpgrade.get(TracksColumns.TABLE_NAME));
         assertEquals(tablesByCreate.get(TrackPointsColumns.TABLE_NAME), tableByUpgrade.get(TrackPointsColumns.TABLE_NAME));
-        assertEquals(tablesByCreate.get(WaypointsColumns.TABLE_NAME), tableByUpgrade.get(WaypointsColumns.TABLE_NAME));
+        assertEquals(tablesByCreate.get(MarkerColumns.TABLE_NAME), tableByUpgrade.get(MarkerColumns.TABLE_NAME));
 
         // then - verify custom indices
         assertEquals(3, indicesByCreate.size());
         assertEquals(indicesByUpgrade.get(TracksColumns.TABLE_NAME), indicesByCreate.get(TracksColumns.TABLE_NAME));
         assertEquals(indicesByUpgrade.get(TrackPointsColumns.TABLE_NAME), indicesByCreate.get(TrackPointsColumns.TABLE_NAME));
-        assertEquals(indicesByUpgrade.get(WaypointsColumns.TABLE_NAME), indicesByCreate.get(WaypointsColumns.TABLE_NAME));
+        assertEquals(indicesByUpgrade.get(MarkerColumns.TABLE_NAME), indicesByCreate.get(MarkerColumns.TABLE_NAME));
     }
 
     @Test

src/androidTest/java/de/dennisguse/opentracks/content/provider/ShareContentProviderTest.java

@@ -3,7 +3,6 @@ package de.dennisguse.opentracks.content.provider;
 import android.net.Uri;
 import android.util.Pair;
 
-import org.junit.Assert;
 import org.junit.Test;
 
 import java.util.HashSet;
@@ -12,17 +11,19 @@ import java.util.Set;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 
+import static org.junit.Assert.assertEquals;
+
 public class ShareContentProviderTest {
 
     @Test
-    public void testCreateandParseURI_invalid() {
+    public void testCreateAndParseURI_invalid() {
         Uri uri = Uri.parse("content://de.dennisguse.opentracks.debug.content/tracks/1");
 
-        Assert.assertEquals(0, ShareContentProvider.parseURI(uri).size());
+        assertEquals(0, ShareContentProvider.parseURI(uri).size());
     }
 
     @Test
-    public void testCreateandParseURI_valid() {
+    public void testCreateAndParseURI_valid() {
         Set<Track.Id> trackIds = new HashSet<>();
         trackIds.add(new Track.Id(1));
         trackIds.add(new Track.Id(3));
@@ -30,7 +31,7 @@ public class ShareContentProviderTest {
 
         Pair<Uri, String> shareURIandMIME = ShareContentProvider.createURI(trackIds, "TrackName", TrackFileFormat.KML_ONLY_TRACK);
 
-        Assert.assertEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
+        assertEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
     }
 
     @Test
@@ -39,6 +40,6 @@ public class ShareContentProviderTest {
         trackIds.add(new Track.Id(1));
         Pair<Uri, String> shareURIandMIME = ShareContentProvider.createURI(trackIds, "../../&1=1", TrackFileFormat.KML_ONLY_TRACK);
 
-        Assert.assertEquals(Uri.parse("content://de.dennisguse.opentracks.debug.content/tracks/kml_only_track/1/..%2F..%2F%261%3D1.kml"), shareURIandMIME.first);
+        assertEquals(Uri.parse("content://de.dennisguse.opentracks.debug.content/tracks/kml_only_track/1/..%2F..%2F%261%3D1.kml"), shareURIandMIME.first);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/content/sensor/SensorDataCyclingTest.java

@@ -2,12 +2,14 @@ package de.dennisguse.opentracks.content.sensor;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import de.dennisguse.opentracks.util.UintUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
 @RunWith(AndroidJUnit4.class)
 public class SensorDataCyclingTest {
 
@@ -21,7 +23,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertEquals(60, current.getCadence_rpm(), 0.01);
+        assertEquals(60, current.getCadence_rpm(), 0.01);
     }
 
     @Test
@@ -34,7 +36,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertEquals(33.53, current.getCadence_rpm(), 0.01);
+        assertEquals(33.53, current.getCadence_rpm(), 0.01);
     }
 
     @Test
@@ -47,7 +49,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertEquals(0, current.getCadence_rpm(), 0.01);
+        assertEquals(0, current.getCadence_rpm(), 0.01);
     }
 
 
@@ -61,7 +63,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertFalse(current.hasCadence_rpm());
+        assertFalse(current.hasCadence_rpm());
     }
 
     @Test
@@ -74,7 +76,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertEquals(60, current.getCadence_rpm(), 0.01);
+        assertEquals(60, current.getCadence_rpm(), 0.01);
     }
 
     @Test
@@ -87,7 +89,7 @@ public class SensorDataCyclingTest {
         current.compute(previous);
 
         // then
-        Assert.assertEquals(60, current.getCadence_rpm(), 0.01);
+        assertEquals(60, current.getCadence_rpm(), 0.01);
     }
 
     @Test
@@ -100,7 +102,7 @@ public class SensorDataCyclingTest {
         current.compute(previous, 2150);
 
         // then
-        Assert.assertEquals(1.20, current.getSpeed_mps(), 0.01);
+        assertEquals(1.20, current.getSpeed_mps(), 0.01);
     }
 
     @Test
@@ -113,6 +115,6 @@ public class SensorDataCyclingTest {
         current.compute(previous, 2000);
 
         // then
-        Assert.assertEquals(2, current.getSpeed_mps(), 0.01);
+        assertEquals(2, current.getSpeed_mps(), 0.01);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/fragments/ChartFragmentTest.java

@@ -23,7 +23,6 @@ import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.AfterClass;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
@@ -35,6 +34,8 @@ import de.dennisguse.opentracks.chart.ChartView;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.util.UnitConversions;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests {@link ChartFragment}.
  *
@@ -78,9 +79,9 @@ public class ChartFragmentTest {
         ChartPoint point = chartFragment.createPendingPoint(trackPoint);
 
         // then
-        Assert.assertEquals(Float.NaN, point.getHeartRate(), 0.01);
-        Assert.assertEquals(Float.NaN, point.getCadence(), 0.01);
-        Assert.assertEquals(Float.NaN, point.getPower(), 0.01);
+        assertEquals(Float.NaN, point.getHeartRate(), 0.01);
+        assertEquals(Float.NaN, point.getCadence(), 0.01);
+        assertEquals(Float.NaN, point.getPower(), 0.01);
     }
 
     /**
@@ -98,9 +99,9 @@ public class ChartFragmentTest {
         ChartPoint point = chartFragment.createPendingPoint(trackPoint);
 
         // then
-        Assert.assertEquals(100.0, point.getHeartRate(), 0.01);
-        Assert.assertEquals(101.0, point.getCadence(), 0.01);
-        Assert.assertEquals(102.0, point.getPower(), 0.01);
+        assertEquals(100.0, point.getHeartRate(), 0.01);
+        assertEquals(101.0, point.getCadence(), 0.01);
+        assertEquals(102.0, point.getPower(), 0.01);
     }
 
     /**
@@ -112,12 +113,12 @@ public class ChartFragmentTest {
         // Resets last location and writes first location.
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getTimeOrDistance(), 0.01);
+        assertEquals(0.0, point.getTimeOrDistance(), 0.01);
 
         // The second is a same location, just different time.
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(0.0, point.getTimeOrDistance(), 0.01);
+        assertEquals(0.0, point.getTimeOrDistance(), 0.01);
 
         // The third location is a new location, and use metric.
         TrackPoint trackPoint3 = TrackStubUtils.createDefaultTrackPoint();
@@ -129,7 +130,7 @@ public class ChartFragmentTest {
         Location.distanceBetween(trackPoint2.getLatitude(), trackPoint2.getLongitude(),
                 trackPoint3.getLatitude(), trackPoint3.getLongitude(), results);
         double distance1 = results[0] * UnitConversions.M_TO_KM;
-        Assert.assertEquals(distance1, point.getTimeOrDistance(), 0.01);
+        assertEquals(distance1, point.getTimeOrDistance(), 0.01);
 
         // The fourth location is a new location, and use metric.
         TrackPoint trackPoint4 = TrackStubUtils.createDefaultTrackPoint();
@@ -140,7 +141,7 @@ public class ChartFragmentTest {
         Location.distanceBetween(trackPoint3.getLatitude(), trackPoint3.getLongitude(),
                 trackPoint4.getLatitude(), trackPoint4.getLongitude(), results);
         double distance2 = results[0] * UnitConversions.M_TO_KM;
-        Assert.assertEquals((distance1 + distance2), point.getTimeOrDistance(), 0.01);
+        assertEquals((distance1 + distance2), point.getTimeOrDistance(), 0.01);
     }
 
     /**
@@ -156,7 +157,7 @@ public class ChartFragmentTest {
         // The first is a same location, just different time.
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getTimeOrDistance(), 0.01);
+        assertEquals(0.0, point.getTimeOrDistance(), 0.01);
 
         // The second location is a new location, and use imperial.
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
@@ -170,7 +171,7 @@ public class ChartFragmentTest {
         float[] results = new float[4];
         Location.distanceBetween(trackPoint1.getLatitude(), trackPoint1.getLongitude(), trackPoint2.getLatitude(), trackPoint2.getLongitude(), results);
         double distance1 = results[0] * UnitConversions.M_TO_KM * UnitConversions.KM_TO_MI;
-        Assert.assertEquals(distance1, point.getTimeOrDistance(), 0.01);
+        assertEquals(distance1, point.getTimeOrDistance(), 0.01);
 
         // The third location is a new location, and use imperial.
         TrackPoint trackPoint3 = TrackStubUtils.createDefaultTrackPoint();
@@ -183,7 +184,7 @@ public class ChartFragmentTest {
          */
         Location.distanceBetween(trackPoint2.getLatitude(), trackPoint2.getLongitude(), trackPoint3.getLatitude(), trackPoint3.getLongitude(), results);
         double distance2 = results[0] * UnitConversions.M_TO_KM * UnitConversions.KM_TO_MI;
-        Assert.assertEquals(distance1 + distance2, point.getTimeOrDistance(), 0.01);
+        assertEquals(distance1 + distance2, point.getTimeOrDistance(), 0.01);
     }
 
     /**
@@ -194,12 +195,12 @@ public class ChartFragmentTest {
         chartFragment.setChartByDistance(false);
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getTimeOrDistance(), 0.01);
+        assertEquals(0.0, point.getTimeOrDistance(), 0.01);
         long timeSpan = 222;
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
         trackPoint2.setTime(trackPoint1.getTime() + timeSpan);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals((double) timeSpan, point.getTimeOrDistance(), 0.01);
+        assertEquals((double) timeSpan, point.getTimeOrDistance(), 0.01);
     }
 
     /**
@@ -214,7 +215,7 @@ public class ChartFragmentTest {
          * Then only one value INITIAL_ALTITUDE in buffer.
          */
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(TrackStubUtils.INITIAL_ALTITUDE, point.getElevation(), 0.01);
+        assertEquals(TrackStubUtils.INITIAL_ALTITUDE, point.getElevation(), 0.01);
 
         /*
          * Send another value to buffer, now there are two values, INITIAL_ALTITUDE and INITIAL_ALTITUDE * 2.
@@ -222,7 +223,7 @@ public class ChartFragmentTest {
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
         trackPoint2.setAltitude(TrackStubUtils.INITIAL_ALTITUDE * 2);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals((TrackStubUtils.INITIAL_ALTITUDE + TrackStubUtils.INITIAL_ALTITUDE * 2) / 2.0, point.getElevation(), 0.01);
+        assertEquals((TrackStubUtils.INITIAL_ALTITUDE + TrackStubUtils.INITIAL_ALTITUDE * 2) / 2.0, point.getElevation(), 0.01);
     }
 
     /**
@@ -239,7 +240,7 @@ public class ChartFragmentTest {
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         trackPoint1.setSpeed(128.5f);
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getSpeed(), 0.01);
+        assertEquals(0.0, point.getSpeed(), 0.01);
 
         /*
          * Tests the logic when both metricUnits and reportSpeed are true.
@@ -253,7 +254,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint1.getTime() + 222);
         trackPoint2.setSpeed(130);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(130.0 * UnitConversions.MPS_TO_KMH, point.getSpeed(), 0.01);
+        assertEquals(130.0 * UnitConversions.MPS_TO_KMH, point.getSpeed(), 0.01);
     }
 
     /**
@@ -267,7 +268,7 @@ public class ChartFragmentTest {
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         trackPoint1.setSpeed(100.0f);
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getSpeed(), 0.01);
+        assertEquals(0.0, point.getSpeed(), 0.01);
 
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
 
@@ -278,7 +279,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint2.getTime() + 222);
         trackPoint2.setSpeed(102);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(102.0 * UnitConversions.MPS_TO_KMH * UnitConversions.KM_TO_MI, point.getSpeed(), 0.01);
+        assertEquals(102.0 * UnitConversions.MPS_TO_KMH * UnitConversions.KM_TO_MI, point.getSpeed(), 0.01);
     }
 
     /**
@@ -292,7 +293,7 @@ public class ChartFragmentTest {
         TrackPoint trackPoint1 = TrackStubUtils.createDefaultTrackPoint();
         trackPoint1.setSpeed(100.0f);
         ChartPoint point = chartFragment.createPendingPoint(trackPoint1);
-        Assert.assertEquals(0.0, point.getSpeed(), 0.01);
+        assertEquals(0.0, point.getSpeed(), 0.01);
 
         TrackPoint trackPoint2 = TrackStubUtils.createDefaultTrackPoint();
 
@@ -303,7 +304,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint2.getTime() + 222);
         trackPoint2.setSpeed(102);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(HOURS_PER_UNIT / (102.0 * UnitConversions.MPS_TO_KMH), point.getPace(), 0.01);
+        assertEquals(HOURS_PER_UNIT / (102.0 * UnitConversions.MPS_TO_KMH), point.getPace(), 0.01);
     }
 
     /**
@@ -315,6 +316,6 @@ public class ChartFragmentTest {
         TrackPoint trackPoint = TrackStubUtils.createDefaultTrackPoint();
         trackPoint.setSpeed(0);
         ChartPoint point = chartFragment.createPendingPoint(trackPoint);
-        Assert.assertEquals(0.0, point.getPace(), 0.01);
+        assertEquals(0.0, point.getPace(), 0.01);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/io/file/importer/AbstractTestFileTrackImporter.java

@@ -24,7 +24,6 @@ import android.net.Uri;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import org.junit.Assert;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 
@@ -34,11 +33,12 @@ import java.util.Locale;
 import java.util.SimpleTimeZone;
 import java.util.TimeZone;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 
+import static org.junit.Assert.assertEquals;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.when;
@@ -70,7 +70,7 @@ public abstract class AbstractTestFileTrackImporter {
     static final long TRACK_POINT_ID_3 = 4;
 
     private static final long WAYPOINT_ID_0 = 1;
-    private static final Uri WAYPOINT_ID_O_URI = ContentUris.appendId(WaypointsColumns.CONTENT_URI.buildUpon(), WAYPOINT_ID_0).build();
+    private static final Uri WAYPOINT_ID_O_URI = ContentUris.appendId(MarkerColumns.CONTENT_URI.buildUpon(), WAYPOINT_ID_0).build();
 
     protected final Context context = ApplicationProvider.getApplicationContext();
 
@@ -114,7 +114,7 @@ public abstract class AbstractTestFileTrackImporter {
     protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, Track.Id trackId) {
         contentProviderUtils.updateTrack(trackCaptor.capture());
 
-        when(contentProviderUtils.insertWaypoint(any())).thenReturn(WAYPOINT_ID_O_URI);
+        when(contentProviderUtils.insertMarker(any())).thenReturn(WAYPOINT_ID_O_URI);
         if (lastTrack) {
             // Return null to not add waypoints
             when(contentProviderUtils.getTrack(trackId)).thenReturn(null);
@@ -122,10 +122,10 @@ public abstract class AbstractTestFileTrackImporter {
     }
 
     protected void verifyTrack(Track track, String name, String description, long time) {
-        Assert.assertEquals(name, track.getName());
-        Assert.assertEquals(description, track.getDescription());
+        assertEquals(name, track.getName());
+        assertEquals(description, track.getDescription());
         if (time != -1L) {
-            Assert.assertEquals(time, track.getTrackStatistics().getStartTime_ms());
+            assertEquals(time, track.getTrackStatistics().getStartTime_ms());
         }
     }
 }

src/androidTest/java/de/dennisguse/opentracks/io/file/importer/ExportImportTest.java

@@ -21,10 +21,10 @@ import java.util.Arrays;
 import java.util.List;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.TestDataUtil;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
@@ -53,7 +53,7 @@ public class ExportImportTest {
     private static final String TRACK_CATEGORY = "the category";
     private static final String TRACK_DESCRIPTION = "the description";
 
-    private final List<Waypoint> waypoints = new ArrayList<>();
+    private final List<Marker> markers = new ArrayList<>();
     private final List<TrackPoint> trackPoints = new ArrayList<>();
 
     private Track.Id importTrackId;
@@ -72,19 +72,19 @@ public class ExportImportTest {
         trackPoints.addAll(Arrays.asList(track.second));
 
         for (int i = 0; i < 3; i++) {
-            Waypoint waypoint = new Waypoint(track.second[i].getLocation());
-            waypoint.setName("the waypoint " + i);
-            waypoint.setDescription("the waypoint description " + i);
-            waypoint.setCategory("the waypoint category" + i);
-            waypoint.setIcon("the waypoing icon" + i);
-            waypoint.setPhotoUrl("the photo url" + i);
-            waypoint.setTrackId(trackId);
-            contentProviderUtils.insertWaypoint(waypoint);
+            Marker marker = new Marker(track.second[i].getLocation());
+            marker.setName("the marker " + i);
+            marker.setDescription("the marker description " + i);
+            marker.setCategory("the marker category" + i);
+            marker.setIcon("the waypoing icon" + i);
+            marker.setPhotoUrl("the photo url" + i);
+            marker.setTrackId(trackId);
+            contentProviderUtils.insertMarker(marker);
 
-            waypoints.add(waypoint);
+            markers.add(marker);
         }
 
-        assertEquals(waypoints.size(), contentProviderUtils.getWaypointCount(trackId));
+        assertEquals(markers.size(), contentProviderUtils.getMarkerCount(trackId));
     }
 
     @After
@@ -129,11 +129,11 @@ public class ExportImportTest {
         assertEquals(track.getIcon(), importedTrack.getIcon());
         assertEquals(track.getUuid(), importedTrack.getUuid());
 
-        // 2. waypoints
-        assertWaypoints();
+        // 2. markers
+        assertMarkers();
 
         // 3. trackpoints
-        assertTrackpoints(false, false, false);
+        assertTrackpoints(false, false, false, false);
     }
 
     @LargeTest
@@ -164,11 +164,11 @@ public class ExportImportTest {
         assertEquals(track.getName(), importedTrack.getName());
         assertEquals(track.getIcon(), importedTrack.getIcon());
 
-        // 2. waypoints
-        assertWaypoints();
+        // 2. markers
+        assertMarkers();
 
         // 3. trackpoints
-        assertTrackpoints(true, true, true);
+        assertTrackpoints(true, true, true, true);
     }
 
     @LargeTest
@@ -253,11 +253,11 @@ public class ExportImportTest {
         //TODO exporting and importing a track icon is not yet supported by GpxTrackWriter.
         //assertEquals(track.getIcon(), trackImported.getIcon());
 
-        // 2. waypoints
-        assertWaypoints();
+        // 2. markers
+        assertMarkers();
 
         // 3. trackpoints
-        assertTrackpoints(false, true, true);
+        assertTrackpoints(false, true, true, false);
     }
 
     @LargeTest
@@ -285,26 +285,26 @@ public class ExportImportTest {
         assertNull(trackImported);
     }
 
-    private void assertWaypoints() {
-        assertEquals(waypoints.size(), contentProviderUtils.getWaypointCount(importTrackId));
+    private void assertMarkers() {
+        assertEquals(markers.size(), contentProviderUtils.getMarkerCount(importTrackId));
 
-        List<Waypoint> importedWaypoints = contentProviderUtils.getWaypoints(importTrackId);
-        for (int i = 0; i < waypoints.size(); i++) {
-            Waypoint waypoint = waypoints.get(i);
-            Waypoint importedWaypoint = importedWaypoints.get(i);
-            assertEquals(waypoint.getCategory(), importedWaypoint.getCategory());
-            assertEquals(waypoint.getDescription(), importedWaypoint.getDescription());
-            // assertEquals(waypoint.getIcon(), importedWaypoint.getIcon()); // TODO for KML
-            assertEquals(waypoint.getName(), importedWaypoint.getName());
-            assertEquals("", importedWaypoint.getPhotoUrl());
+        List<Marker> importedMarkers = contentProviderUtils.getMarkers(importTrackId);
+        for (int i = 0; i < markers.size(); i++) {
+            Marker marker = markers.get(i);
+            Marker importMarker = importedMarkers.get(i);
+            assertEquals(marker.getCategory(), importMarker.getCategory());
+            assertEquals(marker.getDescription(), importMarker.getDescription());
+            // assertEquals(marker.getIcon(), importMarker.getIcon()); // TODO for KML
+            assertEquals(marker.getName(), importMarker.getName());
+            assertEquals("", importMarker.getPhotoUrl());
 
-            assertEquals(waypoint.getLocation().getLatitude(), importedWaypoint.getLocation().getLatitude(), 0.001);
-            assertEquals(waypoint.getLocation().getLongitude(), importedWaypoint.getLocation().getLongitude(), 0.001);
-            assertEquals(waypoint.getLocation().getAltitude(), importedWaypoint.getLocation().getAltitude(), 0.001);
+            assertEquals(marker.getLocation().getLatitude(), importMarker.getLocation().getLatitude(), 0.001);
+            assertEquals(marker.getLocation().getLongitude(), importMarker.getLocation().getLongitude(), 0.001);
+            assertEquals(marker.getLocation().getAltitude(), importMarker.getLocation().getAltitude(), 0.001);
         }
     }
 
-    private void assertTrackpoints(boolean verifyPower, boolean verifyHeartrate, boolean verifyCadence) {
+    private void assertTrackpoints(boolean verifyPower, boolean verifyHeartrate, boolean verifyCadence, boolean verifyElevationGain) {
         List<TrackPoint> importedTrackPoints = contentProviderUtils.getTrackPoints(importTrackId);
         assertEquals(trackPoints.size(), importedTrackPoints.size());
 
@@ -330,6 +330,9 @@ public class ExportImportTest {
             if (verifyPower) {
                 assertEquals(trackPoint.getPower(), importedTrackPoint.getPower(), 0.01);
             }
+            if (verifyElevationGain) {
+                assertEquals(trackPoint.getElevationGain(), importedTrackPoint.getElevationGain(), 0.01);
+            }
         }
     }
 }

src/androidTest/java/de/dennisguse/opentracks/services/AdaptiveLocationListenerPolicyTest.java

@@ -15,7 +15,6 @@
  */
 package de.dennisguse.opentracks.services;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -23,6 +22,8 @@ import org.junit.runners.JUnit4;
 
 import de.dennisguse.opentracks.services.handlers.AdaptiveLocationListenerPolicy;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests the {@link AdaptiveLocationListenerPolicy}.
  *
@@ -57,17 +58,17 @@ public class AdaptiveLocationListenerPolicyTest {
     @Test
     public void testGetDesiredPollingInterval() {
         adaptiveLocationListenerPolicy.updateIdleTime(NEW_IDLE_TIME_BIG);
-        Assert.assertEquals(MAX, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
+        assertEquals(MAX, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
 
         adaptiveLocationListenerPolicy.updateIdleTime(NEW_IDLE_TIME_NORMAL);
         // First get the half of NEW_IDLE_TIME_NORMAL, and then round it to the nearest second.
-        Assert.assertEquals((NEW_IDLE_TIME_NORMAL / 2 / 1000) * 1000, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
+        assertEquals((NEW_IDLE_TIME_NORMAL / 2 / 1000) * 1000, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
 
         adaptiveLocationListenerPolicy.updateIdleTime(NEW_IDLE_TIME_SMALL);
-        Assert.assertEquals(MIN, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
+        assertEquals(MIN, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
 
         adaptiveLocationListenerPolicy.updateIdleTime(NEW_IDLE_TIME_LESS_THAN_MIN);
-        Assert.assertEquals(MIN, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
+        assertEquals(MIN, adaptiveLocationListenerPolicy.getDesiredPollingInterval());
     }
 
     /**
@@ -75,6 +76,6 @@ public class AdaptiveLocationListenerPolicyTest {
      */
     @Test
     public void testGetMinDistance() {
-        Assert.assertEquals(MIN_DISTANCE, adaptiveLocationListenerPolicy.getMinDistance_m());
+        assertEquals(MIN_DISTANCE, adaptiveLocationListenerPolicy.getMinDistance_m());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/services/TrackRecordingServiceTest.java

@@ -25,16 +25,15 @@ import android.os.Looper;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
-import androidx.test.filters.FlakyTest;
 import androidx.test.filters.MediumTest;
 import androidx.test.filters.SmallTest;
 import androidx.test.rule.GrantPermissionRule;
 import androidx.test.rule.ServiceTestRule;
 
 import org.junit.After;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
+import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -45,15 +44,22 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.CustomContentProvider;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for the track recording service.
  *
@@ -120,14 +126,14 @@ public class TrackRecordingServiceTest {
     @Test
     public void testStartable() throws TimeoutException {
         mServiceRule.startService(createStartIntent(context));
-        Assert.assertNotNull(mServiceRule.bindService(createStartIntent(context)));
+        assertNotNull(mServiceRule.bindService(createStartIntent(context)));
     }
 
     @MediumTest
     @Test
     public void testBindable() throws TimeoutException {
         IBinder service = mServiceRule.bindService(createStartIntent(context));
-        Assert.assertNotNull(service);
+        assertNotNull(service);
     }
 
     @MediumTest
@@ -135,7 +141,7 @@ public class TrackRecordingServiceTest {
     public void testRecording_noTracks() throws Exception {
         // given
         List<Track> tracks = contentProviderUtils.getTracks();
-        Assert.assertTrue(tracks.isEmpty());
+        assertTrue(tracks.isEmpty());
 
         // when
         Intent startIntent = createStartIntent(context);
@@ -144,8 +150,8 @@ public class TrackRecordingServiceTest {
 
         // then
         // Test if we start in no-recording mode by default.
-        Assert.assertFalse(service.isRecording());
-        Assert.assertNull(service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -158,8 +164,8 @@ public class TrackRecordingServiceTest {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
 
         // then
-        Assert.assertFalse(service.isRecording());
-        Assert.assertNull(service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -172,7 +178,7 @@ public class TrackRecordingServiceTest {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
 
         // then
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
     }
 
     @MediumTest
@@ -187,21 +193,21 @@ public class TrackRecordingServiceTest {
         service.pauseCurrentTrack();
 
         // then
-        Assert.assertEquals(2, contentProviderUtils.getTrackPoints(trackId).size());
+        assertEquals(2, contentProviderUtils.getTrackPoints(trackId).size());
 
         //when
         service.resumeTrack(trackId);
         newTrackPoint(service);
 
         // then
-        Assert.assertTrue(service.isRecording());
-        Assert.assertEquals(trackId, service.getRecordingTrackId());
+        assertTrue(service.isRecording());
+        assertEquals(trackId, service.getRecordingTrackId());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(5, trackPoints.size());
-        Assert.assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
-        Assert.assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(2).getLatitude(), 0.01);
-        Assert.assertEquals(TrackPointsColumns.RESUME_LATITUDE, trackPoints.get(3).getLatitude(), 0.01);
+        assertEquals(5, trackPoints.size());
+        assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
+        assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(2).getLatitude(), 0.01);
+        assertEquals(TrackPointsColumns.RESUME_LATITUDE, trackPoints.get(3).getLatitude(), 0.01);
     }
 
     @MediumTest
@@ -213,23 +219,23 @@ public class TrackRecordingServiceTest {
         newTrackPoint(service);
         service.endCurrentTrack();
 
-        Assert.assertEquals(1, contentProviderUtils.getTrackPoints(trackId).size());
+        assertEquals(1, contentProviderUtils.getTrackPoints(trackId).size());
 
         // when
         service.resumeTrack(trackId);
         newTrackPoint(service);
 
         // then
-        Assert.assertTrue(service.isRecording());
-        Assert.assertEquals(trackId, service.getRecordingTrackId());
+        assertTrue(service.isRecording());
+        assertEquals(trackId, service.getRecordingTrackId());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(4, trackPoints.size());
-        Assert.assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
-        Assert.assertEquals(TrackPointsColumns.RESUME_LATITUDE, trackPoints.get(2).getLatitude(), 0.01);
+        assertEquals(4, trackPoints.size());
+        assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
+        assertEquals(TrackPointsColumns.RESUME_LATITUDE, trackPoints.get(2).getLatitude(), 0.01);
     }
 
-    @FlakyTest(detail = "Sometimes fails on CI.")
+    @Ignore("Sometimes fails on CI.")
     @MediumTest
     @Test
     public void testRecording_orphanedRecordingTrack() throws Exception {
@@ -242,8 +248,8 @@ public class TrackRecordingServiceTest {
         PreferencesUtils.setLong(context, R.string.recording_track_id_key, 123L);
 
         // then
-        Assert.assertFalse(service.isRecording());
-        Assert.assertNull(service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -252,7 +258,7 @@ public class TrackRecordingServiceTest {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
         service.startNewTrack();
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
 
         Track.Id trackId = service.getRecordingTrackId();
 
@@ -260,10 +266,10 @@ public class TrackRecordingServiceTest {
         Track.Id newTrackId = service.startNewTrack();
 
         // then
-        Assert.assertNull(newTrackId);
+        assertNull(newTrackId);
 
-        Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
-        Assert.assertEquals(trackId, service.getRecordingTrackId());
+        assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
+        assertEquals(trackId, service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -271,15 +277,15 @@ public class TrackRecordingServiceTest {
     public void testEndCurrentTrack_noRecording() throws Exception {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         // when
         // Ending the current track when there is no recording should not result in any error.
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(PreferencesUtils.isRecording(context));
-        Assert.assertNull(service.getRecordingTrackId());
+        assertFalse(PreferencesUtils.isRecording(context));
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -287,13 +293,13 @@ public class TrackRecordingServiceTest {
     public void testInsertWaypointMarker_noRecordingTrack() throws Exception {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         // when
-        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
+        Marker.Id waypointId = service.insertMarker(null, null, null, null);
 
         // then
-        Assert.assertNull(waypointId);
+        assertNull(waypointId);
     }
 
     @MediumTest
@@ -302,29 +308,29 @@ public class TrackRecordingServiceTest {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
         service.startNewTrack();
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
         newTrackPoint(service);
         Track.Id trackId = service.getRecordingTrackId();
 
         // when
-        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
+        Marker.Id waypointId = service.insertMarker(null, null, null, null);
 
         // then
-        Assert.assertNotEquals(-1L, waypointId);
-        Waypoint wpt = contentProviderUtils.getWaypoint(waypointId);
-        Assert.assertEquals(context.getString(R.string.marker_waypoint_icon_url), wpt.getIcon());
-        Assert.assertEquals(context.getString(R.string.marker_name_format, 1), wpt.getName());
-        Assert.assertEquals(trackId, wpt.getTrackId());
-        Assert.assertEquals(0.0, wpt.getLength(), 0.01);
-        Assert.assertNotNull(wpt.getLocation());
+        assertNotEquals(-1L, waypointId);
+        Marker wpt = contentProviderUtils.getMarker(waypointId);
+        assertEquals(context.getString(R.string.marker_waypoint_icon_url), wpt.getIcon());
+        assertEquals(context.getString(R.string.marker_name_format, 1), wpt.getName());
+        assertEquals(trackId, wpt.getTrackId());
+        assertEquals(0.0, wpt.getLength(), 0.01);
+        assertNotNull(wpt.getLocation());
 
         service.endCurrentTrack();
     }
 
     private void addTrack(Track track, boolean isRecording) {
-        Assert.assertTrue(track.getId().isValid());
+        assertTrue(track.getId().isValid());
         contentProviderUtils.insertTrack(track);
-        Assert.assertEquals(track.getId(), contentProviderUtils.getTrack(track.getId()).getId());
+        assertEquals(track.getId(), contentProviderUtils.getTrack(track.getId()).getId());
         PreferencesUtils.setLong(context, R.string.recording_track_id_key, isRecording ? track.getId().getId() : PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
         PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, !isRecording);
     }

src/androidTest/java/de/dennisguse/opentracks/services/TrackRecordingServiceTestLocation.java

@@ -12,7 +12,6 @@ import androidx.test.rule.GrantPermissionRule;
 import androidx.test.rule.ServiceTestRule;
 
 import org.junit.After;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Rule;
@@ -33,6 +32,9 @@ import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+
 /**
  * Tests insert location.
  * <p>
@@ -103,11 +105,11 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(6, trackPoints.size());
-        Assert.assertEquals(45.0005, trackPoints.get(5).getLatitude(), 0.01);
+        assertEquals(6, trackPoints.size());
+        assertEquals(45.0005, trackPoints.get(5).getLatitude(), 0.01);
     }
 
     @MediumTest
@@ -127,11 +129,11 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(2, trackPoints.size());
-        Assert.assertEquals(45.000005, trackPoints.get(1).getLatitude(), 0.01);
+        assertEquals(2, trackPoints.size());
+        assertEquals(45.000005, trackPoints.get(1).getLatitude(), 0.01);
     }
 
 //    @MediumTest
@@ -169,13 +171,13 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(3, trackPoints.size());
-        Assert.assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
-        Assert.assertEquals(2, trackPoints.get(1).getAccuracy(), 0.01);
-        Assert.assertEquals(6, trackPoints.get(2).getAccuracy(), 0.01);
+        assertEquals(3, trackPoints.size());
+        assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
+        assertEquals(2, trackPoints.get(1).getAccuracy(), 0.01);
+        assertEquals(6, trackPoints.get(2).getAccuracy(), 0.01);
     }
 
     @MediumTest
@@ -195,14 +197,14 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(4, trackPoints.size());
-        Assert.assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
-        Assert.assertEquals(2, trackPoints.get(1).getAccuracy(), 0.01);
-        Assert.assertEquals(5, trackPoints.get(2).getAccuracy(), 0.01); //TODO Check why this trackPoint is inserted.
-        Assert.assertEquals(6, trackPoints.get(3).getAccuracy(), 0.01);
+        assertEquals(4, trackPoints.size());
+        assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
+        assertEquals(2, trackPoints.get(1).getAccuracy(), 0.01);
+        assertEquals(5, trackPoints.get(2).getAccuracy(), 0.01); //TODO Check why this trackPoint is inserted.
+        assertEquals(6, trackPoints.get(3).getAccuracy(), 0.01);
     }
 
 
@@ -238,16 +240,16 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(6, trackPoints.size());
-        Assert.assertEquals(0, trackPoints.get(0).getAccuracy(), 0.01);
-        Assert.assertEquals(1, trackPoints.get(1).getAccuracy(), 0.01);
-        Assert.assertEquals(2, trackPoints.get(2).getAccuracy(), 0.01);
-        Assert.assertEquals(3, trackPoints.get(3).getAccuracy(), 0.01);
-        Assert.assertEquals(4, trackPoints.get(4).getAccuracy(), 0.01);
-        Assert.assertEquals(5, trackPoints.get(5).getAccuracy(), 0.01);
+        assertEquals(6, trackPoints.size());
+        assertEquals(0, trackPoints.get(0).getAccuracy(), 0.01);
+        assertEquals(1, trackPoints.get(1).getAccuracy(), 0.01);
+        assertEquals(2, trackPoints.get(2).getAccuracy(), 0.01);
+        assertEquals(3, trackPoints.get(3).getAccuracy(), 0.01);
+        assertEquals(4, trackPoints.get(4).getAccuracy(), 0.01);
+        assertEquals(5, trackPoints.get(5).getAccuracy(), 0.01);
     }
 
     @MediumTest
@@ -266,16 +268,16 @@ public class TrackRecordingServiceTestLocation {
         service.endCurrentTrack();
 
         // then
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(7, trackPoints.size());
-        Assert.assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
-        Assert.assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
-        Assert.assertEquals(2, trackPoints.get(2).getAccuracy(), 0.01);
-        Assert.assertEquals(3, trackPoints.get(3).getAccuracy(), 0.01);
-        Assert.assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(4).getLatitude(), 0.01);
-        Assert.assertEquals(4, trackPoints.get(5).getAccuracy(), 0.01);
-        Assert.assertEquals(5, trackPoints.get(6).getAccuracy(), 0.01);
+        assertEquals(7, trackPoints.size());
+        assertEquals(1, trackPoints.get(0).getAccuracy(), 0.01);
+        assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(1).getLatitude(), 0.01);
+        assertEquals(2, trackPoints.get(2).getAccuracy(), 0.01);
+        assertEquals(3, trackPoints.get(3).getAccuracy(), 0.01);
+        assertEquals(TrackPointsColumns.PAUSE_LATITUDE, trackPoints.get(4).getLatitude(), 0.01);
+        assertEquals(4, trackPoints.get(5).getAccuracy(), 0.01);
+        assertEquals(5, trackPoints.get(6).getAccuracy(), 0.01);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/services/TrackRecordingServiceTestLooper.java

@@ -13,7 +13,6 @@ import androidx.test.rule.ServiceTestRule;
 
 import org.junit.After;
 import org.junit.AfterClass;
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Rule;
@@ -32,6 +31,12 @@ import de.dennisguse.opentracks.content.provider.CustomContentProvider;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for the track recording service, which require a {@link Looper}.
  *
@@ -188,23 +193,23 @@ public class TrackRecordingServiceTestLooper {
     @Test
     public void testIntegration_completeRecordingSession() throws TimeoutException {
         List<Track> tracks = contentProviderUtils.getTracks();
-        Assert.assertTrue(tracks.isEmpty());
+        assertTrue(tracks.isEmpty());
         fullRecordingSession();
     }
 
     private void fullRecordingSession() throws TimeoutException {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(TrackRecordingServiceTest.createStartIntent(context)));
-        Assert.assertFalse(service.isRecording());
+        assertFalse(service.isRecording());
 
         // Start a track.
         Track.Id trackId = service.startNewTrack();
-        Assert.assertTrue(trackId.isValid());
-        Assert.assertTrue(service.isRecording());
+        assertTrue(trackId.isValid());
+        assertTrue(service.isRecording());
         Track track = contentProviderUtils.getTrack(trackId);
-        Assert.assertNotNull(track);
-        Assert.assertEquals(trackId, track.getId());
-        Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
-        Assert.assertEquals(trackId, service.getRecordingTrackId());
+        assertNotNull(track);
+        assertEquals(trackId, track.getId());
+        assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
+        assertEquals(trackId, service.getRecordingTrackId());
 
         // Insert a few points, markers and statistics.
         long startTime = System.currentTimeMillis();
@@ -221,20 +226,20 @@ public class TrackRecordingServiceTestLooper {
             service.newTrackPoint(trackPoint, prefAccuracy);
 
             if (i % 7 == 0) {
-                service.insertWaypoint(null, null, null, null);
+                service.insertMarker(null, null, null, null);
             }
         }
 
         // Stop the track. Validate if it has correct data.
         service.endCurrentTrack();
-        Assert.assertFalse(service.isRecording());
-        Assert.assertNull(service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
         track = contentProviderUtils.getTrack(trackId);
-        Assert.assertNotNull(track);
-        Assert.assertEquals(trackId, track.getId());
+        assertNotNull(track);
+        assertEquals(trackId, track.getId());
         TrackStatistics trackStatistics = track.getTrackStatistics();
-        Assert.assertNotNull(trackStatistics);
-        Assert.assertTrue(trackStatistics.getStartTime_ms() > 0);
-        Assert.assertTrue(trackStatistics.getStopTime_ms() >= trackStatistics.getStartTime_ms());
+        assertNotNull(trackStatistics);
+        assertTrue(trackStatistics.getStartTime_ms() > 0);
+        assertTrue(trackStatistics.getStopTime_ms() >= trackStatistics.getStartTime_ms());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/services/sensors/ElevationSumManagerTest.java

@@ -0,0 +1,50 @@
+package de.dennisguse.opentracks.services.sensors;
+
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+/**
+ * NOTE: Test data is completely artificial.
+ */
+public class ElevationSumManagerTest {
+
+    private ElevationSumManager elevationSumManager = new ElevationSumManager();
+
+    private static void addSensorValue(ElevationSumManager elevationSumManager, float[] values) {
+        for (float f : values) {
+            elevationSumManager.onSensorValueChanged(f);
+        }
+    }
+
+    @Before
+    public void setUp() {
+        elevationSumManager.reset();
+    }
+
+    @Test
+    public void getElevationGainLoss_downhill() {
+        // given
+        elevationSumManager.setConnected(true);
+
+        // then
+        addSensorValue(elevationSumManager, new float[]{1015f, 1015.01f, 1015.02f, 1015.03f, 1015.04f, 1015.05f, 1015.06f, 1015.07f, 1015.08f, 1015.09f, 1015.10f, 1015.11f, 1015.12f, 1015.13f, 1015.14f, 1015.15f});
+
+        // then
+        Assert.assertEquals(0f, elevationSumManager.getElevationGain_m(), 0.01);
+        Assert.assertEquals(-48.0, elevationSumManager.getElevationLoss_m(), 0.01);
+    }
+
+    @Test
+    public void sensorUnavailable() {
+        // given
+        elevationSumManager.setConnected(false);
+
+        // then
+        elevationSumManager.onSensorValueChanged(999f);
+
+        // then
+        Assert.assertNull(elevationSumManager.getElevationGain_m());
+        Assert.assertNull(elevationSumManager.getElevationLoss_m());
+    }
+}

src/androidTest/java/de/dennisguse/opentracks/services/tasks/AnnouncementPeriodicTaskFactoryTest.java

@@ -23,11 +23,12 @@ import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
 import org.junit.AfterClass;
-import org.junit.Assert;
 import org.junit.BeforeClass;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for {@link AnnouncementPeriodicTaskFactory}.
  *
@@ -53,6 +54,6 @@ public class AnnouncementPeriodicTaskFactoryTest {
     public void testCreate() {
         PeriodicTaskFactory factory = new AnnouncementPeriodicTaskFactory();
         PeriodicTask task = factory.create(context);
-        Assert.assertTrue(task instanceof AnnouncementPeriodicTask);
+        assertTrue(task instanceof AnnouncementPeriodicTask);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/stats/TrackStatisticsTest.java

@@ -15,12 +15,13 @@
  */
 package de.dennisguse.opentracks.stats;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests for {@link TrackStatistics}.
  * This only tests non-trivial pieces of that class.
@@ -50,8 +51,8 @@ public class TrackStatisticsTest {
         statistics2.setMovingTime(600L);  // Result: 700+600
         statistics.setTotalDistance(750.0);
         statistics2.setTotalDistance(350.0);  // Result: 750+350
-        statistics.setTotalElevationGain(50.0);
-        statistics2.setTotalElevationGain(850.0);  // Result: 850+50
+        statistics.setTotalElevationGain(50.0f);
+        statistics2.setTotalElevationGain(850.0f);  // Result: 850+50
         statistics.setMaxSpeed(60.0);  // Resulting max speed
         statistics2.setMaxSpeed(30.0);
         statistics.setMaxElevation(1250.0);
@@ -61,28 +62,28 @@ public class TrackStatisticsTest {
 
         statistics.merge(statistics2);
 
-        Assert.assertEquals(1000L, statistics.getStartTime_ms());
-        Assert.assertEquals(4000L, statistics.getStopTime_ms());
-        Assert.assertEquals(2500L, statistics.getTotalTime());
-        Assert.assertEquals(1300L, statistics.getMovingTime());
-        Assert.assertEquals(1100.0, statistics.getTotalDistance(), 0.001);
-        Assert.assertEquals(900.0, statistics.getTotalElevationGain(), 0.001);
-        Assert.assertEquals(statistics.getTotalDistance() / (statistics.getMovingTime() / 1000.0), statistics.getMaxSpeed(), 0.001);
-        Assert.assertEquals(1200.0, statistics.getMinElevation(), 0.001);
-        Assert.assertEquals(3575.0, statistics.getMaxElevation(), 0.001);
+        assertEquals(1000L, statistics.getStartTime_ms());
+        assertEquals(4000L, statistics.getStopTime_ms());
+        assertEquals(2500L, statistics.getTotalTime());
+        assertEquals(1300L, statistics.getMovingTime());
+        assertEquals(1100.0, statistics.getTotalDistance(), 0.001);
+        assertEquals(900.0, statistics.getTotalElevationGain(), 0.001);
+        assertEquals(statistics.getTotalDistance() / (statistics.getMovingTime() / 1000.0), statistics.getMaxSpeed(), 0.001);
+        assertEquals(1200.0, statistics.getMinElevation(), 0.001);
+        assertEquals(3575.0, statistics.getMaxElevation(), 0.001);
     }
 
     @Test
     public void testGetAverageSpeed() {
         statistics.setTotalDistance(1000.0);
         statistics.setTotalTime(50000);  // in milliseconds
-        Assert.assertEquals(20.0, statistics.getAverageSpeed(), 0.001);
+        assertEquals(20.0, statistics.getAverageSpeed(), 0.001);
     }
 
     @Test
     public void testGetAverageMovingSpeed() {
         statistics.setTotalDistance(1000.0);
         statistics.setMovingTime(20000);  // in milliseconds
-        Assert.assertEquals(50.0, statistics.getAverageMovingSpeed(), 0.001);
+        assertEquals(50.0, statistics.getAverageMovingSpeed(), 0.001);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/AnnouncementUtilsTest.java

@@ -5,11 +5,20 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import java.util.Arrays;
+import java.util.List;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.TestDataUtil;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
+
+import static org.junit.Assert.assertEquals;
 
 @RunWith(AndroidJUnit4.class)
 public class AnnouncementUtilsTest {
@@ -26,9 +35,50 @@ public class AnnouncementUtilsTest {
         stats.setTotalElevationGain(6000);
 
         // when
-        String announcement = AnnouncementUtils.getAnnouncement(context, stats, "airplane");
+        String announcement = AnnouncementUtils.getAnnouncement(context, stats, "airplane", null);
 
         // then
-        Assert.assertEquals("OpenTracks total distance 20.00 kilometers in 5 minutes 0 seconds at 240.0 kilometers per hour", announcement);
+        assertEquals("OpenTracks total distance 20.00 kilometers in 5 minutes 0 seconds at 240.0 kilometers per hour", announcement);
+    }
+
+    @Test
+    public void getAnnouncement_withInterval() {
+        TrackStatistics stats = new TrackStatistics();
+        stats.setTotalDistance(20000);
+        stats.setTotalTime(600000);
+        stats.setMovingTime(300000);
+        stats.setMaxSpeed(100);
+        stats.setTotalElevationGain(6000);
+
+        IntervalStatistics intervalStatistics = new IntervalStatistics();
+        List<TrackPoint> trackPoints = Arrays.asList(TestDataUtil.createTrack(new Track.Id(System.currentTimeMillis()), 10).second);
+        intervalStatistics.build(trackPoints, 1000);
+        IntervalStatistics.Interval lastInterval = intervalStatistics.getIntervalList().get(intervalStatistics.getIntervalList().size() - 1);
+
+        int speedId = R.plurals.voiceSpeedKilometersPerHour;
+        double kmPerHour = lastInterval.getSpeed_ms() * UnitConversions.MPS_TO_KMH;
+
+        String firstPartMsg = "OpenTracks total distance 20.00 kilometers in 5 minutes 0 seconds at 240.0 kilometers per hour";
+        String rateMsg = " Lap speed of " + context.getResources().getQuantityString(speedId, getQuantityCount(kmPerHour), kmPerHour);
+        String msg = firstPartMsg + rateMsg;
+
+        // when
+        String announcement = AnnouncementUtils.getAnnouncement(context, stats, "airplane", lastInterval);
+
+        // then
+        assertEquals(msg, announcement);
+    }
+
+    private int getQuantityCount(double d) {
+        if (d == 0) {
+            return 0;
+        } else if (d == 1) {
+            return 1;
+        } else if (d == 2) {
+            return 2;
+        } else {
+            int count = (int) d;
+            return Math.max(count, 3);
+        }
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/BluetoothUtilsTest.java

@@ -2,11 +2,13 @@ package de.dennisguse.opentracks.util;
 
 import android.bluetooth.BluetoothGattCharacteristic;
 
-import org.junit.Assert;
 import org.junit.Test;
 
 import de.dennisguse.opentracks.content.sensor.SensorDataCycling;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
 public class BluetoothUtilsTest {
 
     @Test
@@ -19,7 +21,7 @@ public class BluetoothUtilsTest {
         int heartRate = BluetoothUtils.parseHeartRate(characteristic);
 
         // then
-        Assert.assertEquals(60, heartRate);
+        assertEquals(60, heartRate);
     }
 
     @Test
@@ -32,7 +34,7 @@ public class BluetoothUtilsTest {
         int heartRate = BluetoothUtils.parseHeartRate(characteristic);
 
         // then
-        Assert.assertEquals(257, heartRate);
+        assertEquals(257, heartRate);
     }
 
     @Test
@@ -44,8 +46,8 @@ public class BluetoothUtilsTest {
         SensorDataCycling.CadenceAndSpeed sensor = BluetoothUtils.parseCyclingCrankAndWheel("address", "sensorName", characteristic);
 
         // then
-        Assert.assertEquals(200, sensor.getCadence().getCrankRevolutionsCount());
-        Assert.assertNull(sensor.getSpeed());
+        assertEquals(200, sensor.getCadence().getCrankRevolutionsCount());
+        assertNull(sensor.getSpeed());
     }
 
     @Test
@@ -57,8 +59,8 @@ public class BluetoothUtilsTest {
         SensorDataCycling.CadenceAndSpeed sensor = BluetoothUtils.parseCyclingCrankAndWheel("address", "sensorName", characteristic);
 
         // then
-        Assert.assertNull(sensor.getCadence());
-        Assert.assertEquals(225, sensor.getSpeed().getWheelRevolutionsCount());
+        assertNull(sensor.getCadence());
+        assertEquals(225, sensor.getSpeed().getWheelRevolutionsCount());
     }
 
     @Test
@@ -70,7 +72,7 @@ public class BluetoothUtilsTest {
         SensorDataCycling.CadenceAndSpeed sensor = BluetoothUtils.parseCyclingCrankAndWheel("address", "sensorName", characteristic);
 
         // then
-        Assert.assertEquals(200, sensor.getCadence().getCrankRevolutionsCount());
-        Assert.assertEquals(225, sensor.getSpeed().getWheelRevolutionsCount());
+        assertEquals(200, sensor.getCadence().getCrankRevolutionsCount());
+        assertEquals(225, sensor.getSpeed().getWheelRevolutionsCount());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/FileUtilsTest.java

@@ -15,7 +15,6 @@
  */
 package de.dennisguse.opentracks.util;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -23,6 +22,8 @@ import org.junit.runners.JUnit4;
 import java.io.File;
 import java.util.Arrays;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests for {@link FileUtils}.
  *
@@ -37,7 +38,7 @@ public class FileUtilsTest {
     @Test
     public void testBuildUniqueFileName_new() {
         String filename = FileUtils.buildUniqueFileName(new File("/dir"), "Filename", "ext");
-        Assert.assertEquals("Filename.ext", filename);
+        assertEquals("Filename.ext", filename);
     }
 
     /**
@@ -47,7 +48,7 @@ public class FileUtilsTest {
     public void testBuildUniqueFileName_exist() {
         // Expect "/default.prop" to exist on the phone/emulator
         String filename = FileUtils.buildUniqueFileName(new File("/"), "default", "prop");
-        Assert.assertEquals("default(1).prop", filename);
+        assertEquals("default(1).prop", filename);
     }
 
     /**
@@ -58,13 +59,13 @@ public class FileUtilsTest {
     public void testSanitizeFileName() {
         String name = "Swim\10ming-^across:/the/ pacific (ocean).";
         String expected = "Swim_ming-^across_the_ pacific (ocean).";
-        Assert.assertEquals(expected, FileUtils.sanitizeFileName(name));
+        assertEquals(expected, FileUtils.sanitizeFileName(name));
     }
 
     @Test
     public void testSanitizeFileNameWithSuffix() {
         String name = "FileName.jpeg";
-        Assert.assertEquals(name, FileUtils.sanitizeFileName(name));
+        assertEquals(name, FileUtils.sanitizeFileName(name));
     }
 
     /**
@@ -75,7 +76,7 @@ public class FileUtilsTest {
     public void testSanitizeFileName_i18n() {
         String name = "您好-привет";
         String expected = "您好-привет";
-        Assert.assertEquals(expected, FileUtils.sanitizeFileName(name));
+        assertEquals(expected, FileUtils.sanitizeFileName(name));
     }
 
     /**
@@ -86,7 +87,7 @@ public class FileUtilsTest {
     public void testSanitizeFileName_special_characters() {
         String name = "$%'-_@~`!(){}^#&+,;=[] ";
         String expected = "$%'-_@~`!(){}^#&+,;=[] ";
-        Assert.assertEquals(expected, FileUtils.sanitizeFileName(name));
+        assertEquals(expected, FileUtils.sanitizeFileName(name));
     }
 
     /**
@@ -97,7 +98,7 @@ public class FileUtilsTest {
     public void testSanitizeFileName_collapse() {
         String name = "hello//there";
         String expected = "hello_there";
-        Assert.assertEquals(expected, FileUtils.sanitizeFileName(name));
+        assertEquals(expected, FileUtils.sanitizeFileName(name));
     }
 
     /**
@@ -114,8 +115,8 @@ public class FileUtilsTest {
         String truncated = FileUtils.truncateFileName(directory, nameString, suffix);
 
         for (int i = 0; i < truncated.length(); i++) {
-            Assert.assertEquals('a', truncated.charAt(i));
+            assertEquals('a', truncated.charAt(i));
         }
-        Assert.assertEquals(FileUtils.MAX_FAT32_PATH_LENGTH, new File(directory, truncated + suffix).getPath().length());
+        assertEquals(FileUtils.MAX_FAT32_PATH_LENGTH, new File(directory, truncated + suffix).getPath().length());
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/PreferencesUtilsTest.java

@@ -6,13 +6,14 @@ import android.content.SharedPreferences;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 
+import static org.junit.Assert.assertEquals;
+
 @RunWith(AndroidJUnit4.class)
 public class PreferencesUtilsTest {
 
@@ -29,7 +30,7 @@ public class PreferencesUtilsTest {
         TrackFileFormat trackFileFormat = PreferencesUtils.getExportTrackFileFormat(context);
 
         // then
-        Assert.assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL, trackFileFormat);
+        assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL, trackFileFormat);
     }
 
     @Test
@@ -43,7 +44,7 @@ public class PreferencesUtilsTest {
         TrackFileFormat trackFileFormat = PreferencesUtils.getExportTrackFileFormat(context);
 
         // then
-        Assert.assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA, trackFileFormat);
+        assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA, trackFileFormat);
     }
 
     @Test
@@ -57,6 +58,6 @@ public class PreferencesUtilsTest {
         TrackFileFormat trackFileFormat = PreferencesUtils.getExportTrackFileFormat(context);
 
         // then
-        Assert.assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA, trackFileFormat);
+        assertEquals(TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA, trackFileFormat);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/PressureSensorUtilsTest.java

@@ -0,0 +1,49 @@
+package de.dennisguse.opentracks.util;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class PressureSensorUtilsTest {
+
+    // real data at 500Hz stationary
+    @Test
+    public void elevationChanges_none() {
+        // given
+        float[] sensorValues_hPa = new float[]{1015.6876f, 1015.699f, 1015.70905f, 1015.71075f, 1015.7224f, 1015.72f, 1015.7373f, 1015.7481f, 1015.74133f, 1015.73553f, 1015.7462f, 1015.74896f, 1015.752f, 1015.754f, 1015.7456f, 1015.73303f, 1015.7288f, 1015.7239f, 1015.7298f, 1015.7387f, 1015.72534f, 1015.72577f, 1015.72797f, 1015.71796f, 1015.7113f, 1015.7097f, 1015.7096f, 1015.7013f, 1015.7072f, 1015.71063f, 1015.7088f, 1015.7115f, 1015.713f, 1015.7121f, 1015.7062f, 1015.7062f, 1015.6994f, 1015.69617f, 1015.68945f, 1015.698f, 1015.6913f, 1015.69696f, 1015.69293f, 1015.6955f, 1015.6928f, 1015.6939f, 1015.68787f, 1015.6881f, 1015.68536f, 1015.68726f, 1015.6879f, 1015.6904f, 1015.6937f, 1015.69476f, 1015.7046f, 1015.7019f, 1015.7079f, 1015.71124f, 1015.71216f, 1015.71436f, 1015.7171f, 1015.7186f, 1015.7186f, 1015.7246f, 1015.72046f, 1015.7211f, 1015.72375f, 1015.7194f, 1015.72125f, 1015.7161f, 1015.71185f, 1015.7188f, 1015.721f, 1015.7252f, 1015.72266f, 1015.7236f, 1015.72614f, 1015.7266f, 1015.7344f, 1015.7376f, 1015.7337f, 1015.7253f, 1015.71875f, 1015.7219f, 1015.7219f, 1015.7317f, 1015.7284f, 1015.73444f, 1015.73584f, 1015.7369f, 1015.73254f, 1015.7369f, 1015.7336f, 1015.73254f, 1015.73676f, 1015.74176f, 1015.74506f, 1015.7478f, 1015.755f, 1015.7515f, 1015.7543f, 1015.7459f, 1015.7468f, 1015.7492f, 1015.74585f, 1015.74756f, 1015.74756f, 1015.75085f, 1015.754f, 1015.75336f, 1015.7568f, 1015.75165f, 1015.761f, 1015.7527f, 1015.75684f, 1015.7635f, 1015.7585f, 1015.7552f, 1015.7475f, 1015.74506f, 1015.7542f, 1015.75586f, 1015.74176f, 1015.74414f, 1015.7501f, 1015.751f, 1015.7478f, 1015.755f, 1015.75836f, 1015.7592f, 1015.75256f, 1015.7559f, 1015.76654f, 1015.76154f, 1015.766f, 1015.77014f, 1015.76904f, 1015.76013f, 1015.7674f, 1015.76514f, 1015.7674f, 1015.7635f, 1015.76404f, 1015.7607f, 1015.754f, 1015.7574f, 1015.7607f, 1015.7607f, 1015.7607f, 1015.754f, 1015.7567f, 1015.7616f, 1015.7643f, 1015.7666f, 1015.7609f, 1015.766f, 1015.76764f, 1015.755f, 1015.75757f, 1015.74927f, 1015.74927f, 1015.7426f, 1015.745f, 1015.745f, 1015.7409f, 1015.7376f, 1015.7326f, 1015.74164f, 1015.74664f, 1015.745f, 1015.7459f, 1015.7502f, 1015.7493f, 1015.7476f, 1015.7493f, 1015.751f, 1015.7601f, 1015.76434f, 1015.766f, 1015.756f, 1015.7617f, 1015.7623f, 1015.76404f, 1015.76733f, 1015.7607f, 1015.7623f, 1015.76337f, 1015.7584f, 1015.7573f, 1015.7502f, 1015.7534f, 1015.7534f, 1015.7601f, 1015.75684f, 1015.7518f, 1015.75574f, 1015.7524f, 1015.7507f, 1015.7484f, 1015.7502f, 1015.7534f, 1015.7623f, 1015.75903f, 1015.75574f, 1015.75574f, 1015.7573f, 1015.7524f, 1015.75574f, 1015.75574f, 1015.7607f, 1015.7573f, 1015.754f, 1015.74677f, 1015.754f, 1015.75574f, 1015.75903f, 1015.7573f, 1015.7551f, 1015.7573f, 1015.754f, 1015.7507f, 1015.7374f, 1015.739f, 1015.73566f, 1015.73566f, 1015.7367f, 1015.7417f, 1015.7417f, 1015.739f, 1015.74835f, 1015.74567f, 1015.7517f, 1015.74066f, 1015.7374f, 1015.739f, 1015.7417f, 1015.73065f, 1015.72894f, 1015.73505f, 1015.73334f, 1015.74005f, 1015.74005f, 1015.7367f, 1015.7434f, 1015.744f, 1015.7423f, 1015.7384f, 1015.739f, 1015.7374f, 1015.7374f, 1015.7374f, 1015.7341f, 1015.73505f, 1015.7341f, 1015.7267f, 1015.72833f, 1015.7234f, 1015.7167f, 1015.725f, 1015.7217f, 1015.7234f, 1015.73004f, 1015.7324f, 1015.7423f, 1015.74005f, 1015.73505f, 1015.73004f, 1015.739f, 1015.7417f, 1015.74567f, 1015.74066f, 1015.74146f, 1015.74146f, 1015.73816f, 1015.7274f, 1015.72906f, 1015.7274f, 1015.7341f, 1015.739f, 1015.744f, 1015.7417f, 1015.7374f, 1015.7324f, 1015.73816f, 1015.74146f, 1015.7374f, 1015.7341f, 1015.7365f, 1015.7365f, 1015.74146f, 1015.74414f, 1015.7475f, 1015.7448f, 1015.74146f, 1015.74585f, 1015.7475f, 1015.75146f, 1015.75146f, 1015.7591f, 1015.75476f, 1015.7614f, 1015.75476f, 1015.7492f, 1015.74817f, 1015.7498f, 1015.7515f, 1015.75586f, 1015.7509f, 1015.7448f, 1015.7525f, 1015.7581f, 1015.7592f};
+        float firstSensorValue = sensorValues_hPa[0];
+
+        // when // then
+        for (float v : sensorValues_hPa) {
+            assertNull(PressureSensorUtils.computeChanges_m(firstSensorValue, v));
+        }
+    }
+
+    // Simulate a sudden drop of elevation.
+    // test data
+    @Test
+    public void computeChanges_downhill() {
+        float[] sensorValues_hPa = new float[]{1015f, 1015.01f, 1015.02f, 1015.03f, 1015.04f, 1015.05f, 1015.06f, 1015.07f, 1015.08f, 1015.09f, 1015.10f, 1015.11f, 1015.12f, 1015.13f, 1018f, 1018.1f, 1018.1f, 1018.1f, 1018.1f};
+        float firstSensorValue = sensorValues_hPa[0];
+
+        // when
+        float elevationGain_m = 0;
+        float elevationLoss_m = 0;
+        float lastUsedPressureValue_hPa = firstSensorValue;
+
+        for (float v : sensorValues_hPa) {
+            PressureSensorUtils.ElevationChange elevationChange = PressureSensorUtils.computeChanges_m(lastUsedPressureValue_hPa, v);
+            if (elevationChange != null) {
+                elevationGain_m += elevationChange.getElevationGain_m();
+                elevationLoss_m += elevationChange.getElevationLoss_m();
+                lastUsedPressureValue_hPa = elevationChange.getCurrentSensorValue_hPa();
+            }
+        }
+
+        // then
+        assertEquals(0f, elevationGain_m, 0.01);
+        assertEquals(-15.0f, elevationLoss_m, 0.01);
+        assertEquals(1016.80f, lastUsedPressureValue_hPa, 0.01); //Expect exponential smoothing
+    }
+}

src/androidTest/java/de/dennisguse/opentracks/util/StringUtilsTest.java

@@ -21,13 +21,15 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.util.GregorianCalendar;
 import java.util.TimeZone;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
 /**
  * Tests for {@link StringUtils}.
  *
@@ -44,7 +46,7 @@ public class StringUtilsTest {
      */
     @Test
     public void testFormatDateTimeIso8601() {
-        Assert.assertEquals("1970-01-01T00:00:12.345Z", StringUtils.formatDateTimeIso8601(12345));
+        assertEquals("1970-01-01T00:00:12.345Z", StringUtils.formatDateTimeIso8601(12345));
     }
 
     /**
@@ -53,19 +55,19 @@ public class StringUtilsTest {
     @Test
     public void testformatElapsedTime() {
         // 1 second
-        Assert.assertEquals("00:01", StringUtils.formatElapsedTime(1000));
+        assertEquals("00:01", StringUtils.formatElapsedTime(1000));
         // 10 seconds
-        Assert.assertEquals("00:10", StringUtils.formatElapsedTime(10000));
+        assertEquals("00:10", StringUtils.formatElapsedTime(10000));
         // 1 minute
-        Assert.assertEquals("01:00", StringUtils.formatElapsedTime(60000));
+        assertEquals("01:00", StringUtils.formatElapsedTime(60000));
         // 10 minutes
-        Assert.assertEquals("10:00", StringUtils.formatElapsedTime(600000));
+        assertEquals("10:00", StringUtils.formatElapsedTime(600000));
         // 1 hour
-        Assert.assertEquals("1:00:00", StringUtils.formatElapsedTime(3600000));
+        assertEquals("1:00:00", StringUtils.formatElapsedTime(3600000));
         // 10 hours
-        Assert.assertEquals("10:00:00", StringUtils.formatElapsedTime(36000000));
+        assertEquals("10:00:00", StringUtils.formatElapsedTime(36000000));
         // 100 hours
-        Assert.assertEquals("100:00:00", StringUtils.formatElapsedTime(360000000));
+        assertEquals("100:00:00", StringUtils.formatElapsedTime(360000000));
     }
 
     /**
@@ -74,19 +76,19 @@ public class StringUtilsTest {
     @Test
     public void testformatElapsedTimeWithHour() {
         // 1 second
-        Assert.assertEquals("0:00:01", StringUtils.formatElapsedTimeWithHour(1000));
+        assertEquals("0:00:01", StringUtils.formatElapsedTimeWithHour(1000));
         // 10 seconds
-        Assert.assertEquals("0:00:10", StringUtils.formatElapsedTimeWithHour(10000));
+        assertEquals("0:00:10", StringUtils.formatElapsedTimeWithHour(10000));
         // 1 minute
-        Assert.assertEquals("0:01:00", StringUtils.formatElapsedTimeWithHour(60000));
+        assertEquals("0:01:00", StringUtils.formatElapsedTimeWithHour(60000));
         // 10 minutes
-        Assert.assertEquals("0:10:00", StringUtils.formatElapsedTimeWithHour(600000));
+        assertEquals("0:10:00", StringUtils.formatElapsedTimeWithHour(600000));
         // 1 hour
-        Assert.assertEquals("1:00:00", StringUtils.formatElapsedTimeWithHour(3600000));
+        assertEquals("1:00:00", StringUtils.formatElapsedTimeWithHour(3600000));
         // 10 hours
-        Assert.assertEquals("10:00:00", StringUtils.formatElapsedTimeWithHour(36000000));
+        assertEquals("10:00:00", StringUtils.formatElapsedTimeWithHour(36000000));
         // 100 hours
-        Assert.assertEquals("100:00:00", StringUtils.formatElapsedTimeWithHour(360000000));
+        assertEquals("100:00:00", StringUtils.formatElapsedTimeWithHour(360000000));
     }
 
     /**
@@ -96,13 +98,13 @@ public class StringUtilsTest {
     @Test
     public void testFormatDistance() {
         // A large number in metric
-        Assert.assertEquals("5.00 km", StringUtils.formatDistance(context, 5000, true));
+        assertEquals("5.00 km", StringUtils.formatDistance(context, 5000, true));
         // A large number in imperial
-        Assert.assertEquals("3.11 mi", StringUtils.formatDistance(context, 5000, false));
+        assertEquals("3.11 mi", StringUtils.formatDistance(context, 5000, false));
         // A small number in metric
-        Assert.assertEquals("100.00 m", StringUtils.formatDistance(context, 100, true));
+        assertEquals("100.00 m", StringUtils.formatDistance(context, 100, true));
         // A small number in imperial
-        Assert.assertEquals("328.08 ft", StringUtils.formatDistance(context, 100, false));
+        assertEquals("328.08 ft", StringUtils.formatDistance(context, 100, false));
     }
 
     /**
@@ -110,8 +112,8 @@ public class StringUtilsTest {
      */
     @Test
     public void testFormatCData() {
-        Assert.assertEquals("<![CDATA[hello]]>", StringUtils.formatCData("hello"));
-        Assert.assertEquals("<![CDATA[hello]]]]><![CDATA[>there]]>", StringUtils.formatCData("hello]]>there"));
+        assertEquals("<![CDATA[hello]]>", StringUtils.formatCData("hello"));
+        assertEquals("<![CDATA[hello]]]]><![CDATA[>there]]>", StringUtils.formatCData("hello]]>there"));
     }
 
     /**
@@ -168,7 +170,7 @@ public class StringUtilsTest {
 
         // This comparision tends to be flaky (difference of 1ms)
         // Assert.assertEquals(calendar.getTimeInMillis(), StringUtils.parseTime(xmlDateTime));
-        Assert.assertTrue(calendar.getTimeInMillis() + " vs. " + StringUtils.parseTime(xmlDateTime), Math.abs(calendar.getTimeInMillis() - StringUtils.parseTime(xmlDateTime)) <= 1);
+        assertTrue(calendar.getTimeInMillis() + " vs. " + StringUtils.parseTime(xmlDateTime), Math.abs(calendar.getTimeInMillis() - StringUtils.parseTime(xmlDateTime)) <= 1);
     }
 
     /**
@@ -177,9 +179,9 @@ public class StringUtilsTest {
     @Test
     public void testGetTimeParts_positive() {
         int[] parts = StringUtils.getTimeParts(61000);
-        Assert.assertEquals(1, parts[0]);
-        Assert.assertEquals(1, parts[1]);
-        Assert.assertEquals(0, parts[2]);
+        assertEquals(1, parts[0]);
+        assertEquals(1, parts[1]);
+        assertEquals(0, parts[2]);
     }
 
     /**
@@ -188,40 +190,40 @@ public class StringUtilsTest {
     @Test
     public void testGetTimeParts_negative() {
         int[] parts = StringUtils.getTimeParts(-61000);
-        Assert.assertEquals(-1, parts[0]);
-        Assert.assertEquals(-1, parts[1]);
-        Assert.assertEquals(0, parts[2]);
+        assertEquals(-1, parts[0]);
+        assertEquals(-1, parts[1]);
+        assertEquals(0, parts[2]);
     }
 
     @Test
     public void testFormatDecimal() {
-        Assert.assertEquals("0", StringUtils.formatDecimal(0.0, 0));
-        Assert.assertEquals("0", StringUtils.formatDecimal(0.1, 0));
-        Assert.assertEquals("1", StringUtils.formatDecimal(1.1, 0));
-        Assert.assertEquals("10", StringUtils.formatDecimal(10, 0));
-        Assert.assertEquals("10", StringUtils.formatDecimal(10.1, 0));
-        Assert.assertEquals("0", StringUtils.formatDecimal(-0.1, 0));
+        assertEquals("0", StringUtils.formatDecimal(0.0, 0));
+        assertEquals("0", StringUtils.formatDecimal(0.1, 0));
+        assertEquals("1", StringUtils.formatDecimal(1.1, 0));
+        assertEquals("10", StringUtils.formatDecimal(10, 0));
+        assertEquals("10", StringUtils.formatDecimal(10.1, 0));
+        assertEquals("-0", StringUtils.formatDecimal(-0.1, 0));
 
-        Assert.assertEquals("0", StringUtils.formatDecimal(0.0, 2));
-        Assert.assertEquals("0.1", StringUtils.formatDecimal(0.1, 2));
-        Assert.assertEquals("1.1", StringUtils.formatDecimal(1.1, 2));
-        Assert.assertEquals("10", StringUtils.formatDecimal(10, 2));
-        Assert.assertEquals("10.1", StringUtils.formatDecimal(10.1, 2));
-        Assert.assertEquals("10.11", StringUtils.formatDecimal(10.111, 2));
-        Assert.assertEquals("-0.1", StringUtils.formatDecimal(-0.1, 2));
+        assertEquals("0", StringUtils.formatDecimal(0.0, 2));
+        assertEquals("0.1", StringUtils.formatDecimal(0.1, 2));
+        assertEquals("1.1", StringUtils.formatDecimal(1.1, 2));
+        assertEquals("10", StringUtils.formatDecimal(10, 2));
+        assertEquals("10.1", StringUtils.formatDecimal(10.1, 2));
+        assertEquals("10.11", StringUtils.formatDecimal(10.111, 2));
+        assertEquals("-0.1", StringUtils.formatDecimal(-0.1, 2));
 
-        Assert.assertEquals("1", StringUtils.formatDecimal(0.99, 1));
+        assertEquals("1", StringUtils.formatDecimal(0.99, 1));
     }
 
     @Test
     public void testGetSpeedParts() {
-        Assert.assertEquals("4:59", StringUtils.getSpeedParts(context, 3.34, true, false).first);
-        Assert.assertEquals("5:00", StringUtils.getSpeedParts(context, 3.33, true, false).first);
+        assertEquals("4:59", StringUtils.getSpeedParts(context, 3.34, true, false).first);
+        assertEquals("5:00", StringUtils.getSpeedParts(context, 3.33, true, false).first);
 
-        Assert.assertEquals("11.99", StringUtils.getSpeedParts(context, 3.33, true, true).first);
-        Assert.assertEquals("7.45", StringUtils.getSpeedParts(context, 3.33, false, true).first);
+        assertEquals("11.9", StringUtils.getSpeedParts(context, 3.31, true, true).first);
+        assertEquals("7.5", StringUtils.getSpeedParts(context, 3.34, false, true).first);
 
-        Assert.assertEquals("min/km", StringUtils.getSpeedParts(context, 0, true, false).second);
-        Assert.assertEquals("min/mi", StringUtils.getSpeedParts(context, 0, false, false).second);
+        assertEquals("min/km", StringUtils.getSpeedParts(context, 0, true, false).second);
+        assertEquals("min/mi", StringUtils.getSpeedParts(context, 0, false, false).second);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/TrackNameUtilsTest.java

@@ -21,7 +21,6 @@ import android.content.Context;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
@@ -32,6 +31,8 @@ import java.util.Locale;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.Track;
 
+import static org.junit.Assert.assertEquals;
+
 /**
  * Tests {@link TrackNameUtils}.
  *
@@ -51,7 +52,7 @@ public class TrackNameUtilsTest {
     @Test
     public void testTrackName_date_local() {
         PreferencesUtils.setString(CONTEXT, R.string.track_name_key, CONTEXT.getString(R.string.settings_recording_track_name_date_local_value));
-        Assert.assertEquals(StringUtils.formatDateTime(CONTEXT, START_TIME), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
+        assertEquals(StringUtils.formatDateTime(CONTEXT, START_TIME), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
     }
 
     /**
@@ -61,7 +62,7 @@ public class TrackNameUtilsTest {
     public void testTrackName_date_iso_8601() {
         PreferencesUtils.setString(CONTEXT, R.string.track_name_key, CONTEXT.getString(R.string.settings_recording_track_name_date_iso_8601_value));
         SimpleDateFormat simpleDateFormat = new SimpleDateFormat(TrackNameUtils.ISO_8601_FORMAT, Locale.US);
-        Assert.assertEquals(simpleDateFormat.format(new Date(START_TIME)), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
+        assertEquals(simpleDateFormat.format(new Date(START_TIME)), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
     }
 
     /**
@@ -70,6 +71,6 @@ public class TrackNameUtilsTest {
     @Test
     public void testTrackName_number() {
         PreferencesUtils.setString(CONTEXT, R.string.track_name_key, CONTEXT.getString(R.string.settings_recording_track_name_number_value));
-        Assert.assertEquals("Track " + TRACK_ID.getId(), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
+        assertEquals("Track " + TRACK_ID.getId(), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
     }
 }

src/androidTest/java/de/dennisguse/opentracks/util/TrackPointUtilsTest.java

@@ -1,10 +1,11 @@
 package de.dennisguse.opentracks.util;
 
-import org.junit.Assert;
 import org.junit.Test;
 
 import de.dennisguse.opentracks.content.data.TrackPoint;
 
+import static org.junit.Assert.assertEquals;
+
 public class TrackPointUtilsTest {
 
     @Test
@@ -18,7 +19,7 @@ public class TrackPointUtilsTest {
         TrackPointUtils.fixTime(trackPoint);
 
         // then
-        Assert.assertEquals(time, trackPoint.getTime());
+        assertEquals(time, trackPoint.getTime());
     }
 
     @Test
@@ -32,7 +33,7 @@ public class TrackPointUtilsTest {
         TrackPointUtils.fixTime(trackPoint);
 
         // then
-        Assert.assertEquals(time, trackPoint.getTime(), 1000);
+        assertEquals(time, trackPoint.getTime(), 1000);
     }
 
     @Test
@@ -46,7 +47,7 @@ public class TrackPointUtilsTest {
         TrackPointUtils.fixTime(trackPoint);
 
         // then
-        Assert.assertEquals(time, trackPoint.getTime());
+        assertEquals(time, trackPoint.getTime());
     }
 
 }

src/androidTest/java/de/dennisguse/opentracks/util/UUIDUtilsTest.java

@@ -2,12 +2,13 @@ package de.dennisguse.opentracks.util;
 
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
 import java.util.UUID;
 
+import static org.junit.Assert.assertEquals;
+
 @RunWith(AndroidJUnit4.class)
 public class UUIDUtilsTest {
 
@@ -18,6 +19,6 @@ public class UUIDUtilsTest {
         byte[] bytes = UUIDUtils.toBytes(uuid);
         UUID output = UUIDUtils.fromBytes(bytes);
 
-        Assert.assertEquals(uuid, output);
+        assertEquals(uuid, output);
     }
 }

src/androidTest/java/de/dennisguse/opentracks/viewmodels/AggregatedStatisticsTest.java

@@ -4,7 +4,6 @@ import android.content.Context;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
@@ -14,6 +13,9 @@ import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
 @RunWith(JUnit4.class)
 public class AggregatedStatisticsTest {
 
@@ -33,7 +35,7 @@ public class AggregatedStatisticsTest {
         statistics.setTotalTime(totalTime);
         statistics.setMovingTime(totalTime);
         statistics.setTotalDistance(totalDistance);
-        statistics.setTotalElevationGain(50.0);
+        statistics.setTotalElevationGain(50.0f);
         statistics.setMaxSpeed(50.0);  // Resulting max speed
         statistics.setMaxElevation(1250.0);
         statistics.setMinElevation(1200.0);  // Resulting min elevation
@@ -59,13 +61,13 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(track);
 
         // then
-        Assert.assertEquals(1, aggregatedStatistics.getCount());
-        Assert.assertNotNull(aggregatedStatistics.get(biking));
-        Assert.assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
+        assertEquals(1, aggregatedStatistics.getCount());
+        assertNotNull(aggregatedStatistics.get(biking));
+        assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
 
         TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
-        Assert.assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
-        Assert.assertEquals(totalTime, statistics2.getMovingTime());
+        assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
+        assertEquals(totalTime, statistics2.getMovingTime());
     }
 
     @Test
@@ -82,7 +84,7 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(track);
 
         // then
-        Assert.assertNotNull(aggregatedStatistics.get(mountainBiking));
+        assertNotNull(aggregatedStatistics.get(mountainBiking));
     }
 
     @Test
@@ -99,7 +101,7 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(track);
 
         // then
-        Assert.assertNotNull(aggregatedStatistics.get(trailRunning));
+        assertNotNull(aggregatedStatistics.get(trailRunning));
     }
 
     @Test
@@ -120,13 +122,13 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(tracks[1]); // biking activity 2.
 
         // then
-        Assert.assertEquals(1, aggregatedStatistics.getCount());
-        Assert.assertNotNull(aggregatedStatistics.get(biking));
-        Assert.assertEquals(2, aggregatedStatistics.get(biking).getCountTracks());
+        assertEquals(1, aggregatedStatistics.getCount());
+        assertNotNull(aggregatedStatistics.get(biking));
+        assertEquals(2, aggregatedStatistics.get(biking).getCountTracks());
 
         TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
-        Assert.assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
-        Assert.assertEquals(totalTime * 2L, statistics2.getMovingTime());
+        assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
+        assertEquals(totalTime * 2L, statistics2.getMovingTime());
     }
 
     @Test
@@ -152,30 +154,30 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(tracks[2]); // biking activity 3.
 
         // then
-        Assert.assertEquals(3, aggregatedStatistics.getCount());
-        Assert.assertNotNull(aggregatedStatistics.get(biking));
-        Assert.assertNotNull(aggregatedStatistics.get(running));
-        Assert.assertNotNull(aggregatedStatistics.get(walking));
-        Assert.assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
-        Assert.assertEquals(1, aggregatedStatistics.get(running).getCountTracks());
-        Assert.assertEquals(1, aggregatedStatistics.get(walking).getCountTracks());
+        assertEquals(3, aggregatedStatistics.getCount());
+        assertNotNull(aggregatedStatistics.get(biking));
+        assertNotNull(aggregatedStatistics.get(running));
+        assertNotNull(aggregatedStatistics.get(walking));
+        assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
+        assertEquals(1, aggregatedStatistics.get(running).getCountTracks());
+        assertEquals(1, aggregatedStatistics.get(walking).getCountTracks());
 
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
-            Assert.assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime, statistics2.getMovingTime());
+            assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime, statistics2.getMovingTime());
         }
 
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(running).getTrackStatistics();
-            Assert.assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime, statistics2.getMovingTime());
+            assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime, statistics2.getMovingTime());
         }
 
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(walking).getTrackStatistics();
-            Assert.assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime, statistics2.getMovingTime());
+            assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime, statistics2.getMovingTime());
         }
     }
 
@@ -212,46 +214,46 @@ public class AggregatedStatisticsTest {
 
         // then
         // 4 sports.
-        Assert.assertEquals(4, aggregatedStatistics.getCount());
+        assertEquals(4, aggregatedStatistics.getCount());
 
         // There is a map for every sport.
-        Assert.assertNotNull(aggregatedStatistics.get(biking));
-        Assert.assertNotNull(aggregatedStatistics.get(running));
-        Assert.assertNotNull(aggregatedStatistics.get(walking));
-        Assert.assertNotNull(aggregatedStatistics.get(driving));
+        assertNotNull(aggregatedStatistics.get(biking));
+        assertNotNull(aggregatedStatistics.get(running));
+        assertNotNull(aggregatedStatistics.get(walking));
+        assertNotNull(aggregatedStatistics.get(driving));
 
         // Number of tracks by sport.
-        Assert.assertEquals(5, aggregatedStatistics.get(biking).getCountTracks()); // Biking.
-        Assert.assertEquals(2, aggregatedStatistics.get(running).getCountTracks()); // Running.
-        Assert.assertEquals(2, aggregatedStatistics.get(walking).getCountTracks()); // Walking.
-        Assert.assertEquals(1, aggregatedStatistics.get(driving).getCountTracks()); // Driving.
+        assertEquals(5, aggregatedStatistics.get(biking).getCountTracks()); // Biking.
+        assertEquals(2, aggregatedStatistics.get(running).getCountTracks()); // Running.
+        assertEquals(2, aggregatedStatistics.get(walking).getCountTracks()); // Walking.
+        assertEquals(1, aggregatedStatistics.get(driving).getCountTracks()); // Driving.
 
         // Biking.
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
-            Assert.assertEquals(totalDistance * 5, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime * 5, statistics2.getMovingTime());
+            assertEquals(totalDistance * 5, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime * 5, statistics2.getMovingTime());
         }
 
         // Running.
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(running).getTrackStatistics();
-            Assert.assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime * 2, statistics2.getMovingTime());
+            assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime * 2, statistics2.getMovingTime());
         }
 
         // Walking.
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(walking).getTrackStatistics();
-            Assert.assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime * 2, statistics2.getMovingTime());
+            assertEquals(totalDistance * 2, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime * 2, statistics2.getMovingTime());
         }
 
         // Driving.
         {
             TrackStatistics statistics2 = aggregatedStatistics.get(driving).getTrackStatistics();
-            Assert.assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
-            Assert.assertEquals(totalTime, statistics2.getMovingTime());
+            assertEquals(totalDistance, statistics2.getTotalDistance(), 0);
+            assertEquals(totalTime, statistics2.getMovingTime());
         }
     }
 }

src/androidTest/java/de/dennisguse/opentracks/viewmodels/IntervalStatisticsTest.java

@@ -0,0 +1,144 @@
+package de.dennisguse.opentracks.viewmodels;
+
+import android.util.Pair;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
+
+import java.util.Arrays;
+import java.util.List;
+
+import de.dennisguse.opentracks.content.data.TestDataUtil;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
+import de.dennisguse.opentracks.util.UnitConversions;
+
+import static org.junit.Assert.assertEquals;
+
+@RunWith(JUnit4.class)
+public class IntervalStatisticsTest {
+
+	private static final String TAG = IntervalStatisticsTest.class.getSimpleName();
+
+	private List<TrackPoint> buildTrackPoints(int numberOfTrackPoints) {
+		Pair<Track, TrackPoint[]> pair = TestDataUtil.createTrack(new Track.Id(System.currentTimeMillis()), numberOfTrackPoints);
+		return Arrays.asList(pair.second);
+	}
+
+	private TrackStatistics buildTrackStatistics(List<TrackPoint> trackPoints) {
+		TrackStatisticsUpdater trackStatisticsUpdater = new TrackStatisticsUpdater(trackPoints.get(0).getTime());
+		for (TrackPoint tp : trackPoints) {
+			trackStatisticsUpdater.addTrackPoint(tp, 0);
+		}
+		return trackStatisticsUpdater.getTrackStatistics();
+	}
+
+	/**
+	 * Tests that build method compute the distance correctly comparing the result with TrackStatisticsUpdater result.
+	 */
+	@Test
+	public void testBuild_1() {
+		// With 50 points and interval distance of 1000m.
+
+		// given
+		List<TrackPoint> trackPoints = buildTrackPoints(50);
+		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
+		float distanceInterval = 1000f;
+		IntervalStatistics intervalStatistics = new IntervalStatistics();
+
+		// when and then
+		whenAndThen(trackPoints, trackStatistics, distanceInterval, intervalStatistics);
+	}
+
+	/**
+	 * Tests that build method compute the distance correctly comparing the result with TrackStatisticsUpdater result.
+	 */
+	@Test
+	public void testBuild_2() {
+		// With 200 points and interval distance of 1000m.
+
+		// given
+		List<TrackPoint> trackPoints = buildTrackPoints(200);
+		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
+		float distanceInterval = 1000f;
+		IntervalStatistics intervalStatistics = new IntervalStatistics();
+
+		// when and then
+		whenAndThen(trackPoints, trackStatistics, distanceInterval, intervalStatistics);
+	}
+
+	/**
+	 * Tests that build method compute the distance correctly comparing the result with TrackStatisticsUpdater result.
+	 */
+	@Test
+	public void testBuild_3() {
+		// With 200 points and interval distance of 3000m.
+
+		// given
+		List<TrackPoint> trackPoints = buildTrackPoints(200);
+		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
+		float distanceInterval = 3000;
+		IntervalStatistics intervalStatistics = new IntervalStatistics();
+
+		// when and then
+		whenAndThen(trackPoints, trackStatistics, distanceInterval, intervalStatistics);
+	}
+
+	/**
+	 * Tests that build method compute the distance correctly comparing the result with TrackStatisticsUpdater result.
+	 */
+	@Test
+	public void testBuild_4() {
+		// With 1000 points and interval distance of 3000m.
+
+		// given
+		List<TrackPoint> trackPoints = buildTrackPoints(1000);
+		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
+		float distanceInterval = 3000;
+		IntervalStatistics intervalStatistics = new IntervalStatistics();
+
+		// when and then
+		whenAndThen(trackPoints, trackStatistics, distanceInterval, intervalStatistics);
+	}
+
+	/**
+	 * Tests that build method compute the distance correctly comparing the result with TrackStatisticsUpdater result.
+	 */
+	@Test
+	public void testBuild_5() {
+		// With 10000 points and interval distance of 1000m.
+
+		// given
+		List<TrackPoint> trackPoints = buildTrackPoints(10000);
+		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
+		float distanceInterval = 1000;
+		IntervalStatistics intervalStatistics = new IntervalStatistics();
+
+		// when and then
+		whenAndThen(trackPoints, trackStatistics, distanceInterval, intervalStatistics);
+	}
+
+	private void whenAndThen(List<TrackPoint> trackPoints, TrackStatistics trackStatistics, float distanceInterval, IntervalStatistics intervalStatistics) {
+		intervalStatistics.build(trackPoints, distanceInterval);
+		List<IntervalStatistics.Interval> intervalList = intervalStatistics.getIntervalList();
+		double totalDistance = 0d;
+		long totalTime = 0L;
+		for (IntervalStatistics.Interval i : intervalList) {
+			totalDistance += i.getDistance_m();
+			totalTime += ((i.getDistance_m() / i.getSpeed_ms()) * UnitConversions.S_TO_MS);
+		}
+
+		// then
+		assertEquals(trackStatistics.getTotalDistance(), totalDistance, 0.01);
+		assertEquals(trackStatistics.getTotalTime() * UnitConversions.MS_TO_S, totalTime * UnitConversions.MS_TO_S, 0.1);
+		assertEquals(intervalList.size(), (int) Math.ceil(trackStatistics.getTotalDistance() / distanceInterval));
+		for (int i = 0; i < intervalList.size() - 1; i++) {
+			assertEquals(intervalList.get(i).getDistance_m(), distanceInterval, 0.001);
+			totalDistance -= intervalList.get(i).getDistance_m();
+		}
+		assertEquals(intervalList.get(intervalList.size() - 1).getDistance_m(), totalDistance, 0.01);
+	}
+}

src/main/AndroidManifest.xml

@@ -14,7 +14,6 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
     package="de.dennisguse.opentracks"
     android:installLocation="auto">
 
@@ -138,7 +137,9 @@ limitations under the License.
 
         <activity android:name=".TrackEditActivity" />
 
-        <activity android:name=".TrackListActivity">
+        <activity
+            android:name=".TrackListActivity"
+            android:theme="@style/SplashTheme">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />

src/main/java/de/dennisguse/opentracks/MarkerDetailActivity.java

@@ -30,7 +30,7 @@ import androidx.viewpager.widget.ViewPager;
 import java.util.ArrayList;
 import java.util.List;
 
-import de.dennisguse.opentracks.content.data.Waypoint;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
 import de.dennisguse.opentracks.fragments.MarkerDetailFragment;
@@ -48,13 +48,13 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
     private static final String TAG = MarkerDetailActivity.class.getSimpleName();
 
-    private List<Waypoint.Id> waypointIds;
+    private List<Marker.Id> waypointIds;
 
     @Override
     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
 
-        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
+        Marker.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
         if (waypointId == null) {
             Log.d(TAG, "invalid marker id");
             finish();
@@ -62,16 +62,16 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
         }
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
-        Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
+        Marker waypoint = contentProviderUtils.getMarker(waypointId);
 
         waypointIds = new ArrayList<>();
         int markerIndex = -1;
 
         //TODO Load only waypointIds, not the whole waypoint
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(waypoint.getTrackId(), null, -1)) {
+        try (Cursor cursor = contentProviderUtils.getMarkerCursor(waypoint.getTrackId(), null, -1)) {
             if (cursor != null && cursor.moveToFirst()) {
                 for (int i = 0; i < cursor.getCount(); i++) {
-                    Waypoint currentMarker = contentProviderUtils.createWaypoint(cursor);
+                    Marker currentMarker = contentProviderUtils.createMarker(cursor);
                     waypointIds.add(currentMarker.getId());
                     if (waypointId.equals(currentMarker.getId())) {
                         markerIndex = waypointIds.size() - 1;

src/main/java/de/dennisguse/opentracks/MarkerEditActivity.java

@@ -42,8 +42,8 @@ import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.util.FileUtils;
@@ -67,7 +67,7 @@ public class MarkerEditActivity extends AbstractActivity {
     private static final String TAG = MarkerEditActivity.class.getSimpleName();
     private Track.Id trackId;
     private TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
-    private Waypoint waypoint;
+    private Marker waypoint;
 
     private MenuItem insertPhotoMenuItem;
     private MenuItem insertGalleryImgMenuItem;
@@ -87,7 +87,7 @@ public class MarkerEditActivity extends AbstractActivity {
         super.onCreate(savedInstanceState);
 
         trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
-        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
+        Marker.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
 
         hasCamera = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
 
@@ -127,7 +127,7 @@ public class MarkerEditActivity extends AbstractActivity {
         });
 
         if (isNewMarker) {
-            int nextWaypointNumber = trackId == null ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId);
+            int nextWaypointNumber = trackId == null ? -1 : new ContentProviderUtils(this).getNextMarkerNumber(trackId);
             if (nextWaypointNumber == -1) {
                 nextWaypointNumber = 0;
             }
@@ -136,7 +136,7 @@ public class MarkerEditActivity extends AbstractActivity {
             waypointMarkerType.setText("");
             waypointDescription.setText("");
         } else {
-            waypoint = new ContentProviderUtils(this).getWaypoint(waypointId);
+            waypoint = new ContentProviderUtils(this).getMarker(waypointId);
             if (waypoint == null) {
                 Log.d(TAG, "waypoint is null");
                 finish();
@@ -307,6 +307,6 @@ public class MarkerEditActivity extends AbstractActivity {
         waypoint.setDescription(waypointDescription.getText().toString());
         waypoint.setPhotoUrl(photoUri != null ? photoUri.toString() : null);
 
-        new ContentProviderUtils(this).updateWaypoint(this, waypoint);
+        new ContentProviderUtils(this).updateMarker(this, waypoint);
     }
 }

src/main/java/de/dennisguse/opentracks/MarkerListActivity.java

@@ -34,9 +34,9 @@ import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
 import androidx.loader.content.Loader;
 
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
@@ -124,19 +124,19 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
         listView.setEmptyView(findViewById(R.id.marker_list_empty));
         listView.setOnItemClickListener((parent, view, position, id) -> {
             Intent intent = IntentUtils.newIntent(MarkerListActivity.this, MarkerDetailActivity.class)
-                    .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, new Waypoint.Id(id));
+                    .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, new Marker.Id(id));
             startActivity(intent);
         });
         resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.list_item, null, 0) {
             @Override
             public void bindView(View view, Context context, Cursor cursor) {
-                int nameIndex = cursor.getColumnIndex(WaypointsColumns.NAME);
-                int timeIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.TIME);
-                int categoryIndex = cursor.getColumnIndex(WaypointsColumns.CATEGORY);
-                int descriptionIndex = cursor.getColumnIndex(WaypointsColumns.DESCRIPTION);
-                int photoUrlIndex = cursor.getColumnIndex(WaypointsColumns.PHOTOURL);
-                int latitudeIndex = cursor.getColumnIndex(WaypointsColumns.LATITUDE);
-                int longitudeIndex = cursor.getColumnIndex(WaypointsColumns.LONGITUDE);
+                int nameIndex = cursor.getColumnIndex(MarkerColumns.NAME);
+                int timeIndex = cursor.getColumnIndexOrThrow(MarkerColumns.TIME);
+                int categoryIndex = cursor.getColumnIndex(MarkerColumns.CATEGORY);
+                int descriptionIndex = cursor.getColumnIndex(MarkerColumns.DESCRIPTION);
+                int photoUrlIndex = cursor.getColumnIndex(MarkerColumns.PHOTOURL);
+                int latitudeIndex = cursor.getColumnIndex(MarkerColumns.LATITUDE);
+                int longitudeIndex = cursor.getColumnIndex(MarkerColumns.LONGITUDE);
 
                 int iconId = MarkerUtils.ICON_ID;
                 String name = cursor.getString(nameIndex);
@@ -158,7 +158,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
             @NonNull
             @Override
             public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-                return ContentProviderUtils.getWaypointsLoader(MarkerListActivity.this, track != null ? track.getId() : null);
+                return ContentProviderUtils.getMarkersLoader(MarkerListActivity.this, track != null ? track.getId() : null);
             }
 
             @Override
@@ -234,16 +234,16 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
      * @return true if handled.
      */
     private boolean handleContextItem(int itemId, long... longWaypointIds) {
-        Waypoint.Id[] waypointIds = new Waypoint.Id[longWaypointIds.length];
+        Marker.Id[] waypointIds = new Marker.Id[longWaypointIds.length];
         for (int i = 0; i < longWaypointIds.length; i++) {
-            waypointIds[i] = new Waypoint.Id(longWaypointIds[i]);
+            waypointIds[i] = new Marker.Id(longWaypointIds[i]);
         }
 
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
                 if (waypointIds.length == 1) {
-                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(waypointIds[0]));
+                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getMarker(waypointIds[0]));
                 }
                 return true;
             case R.id.list_context_menu_edit:

src/main/java/de/dennisguse/opentracks/SearchListActivity.java

@@ -41,8 +41,8 @@ import java.util.SortedSet;
 import de.dennisguse.opentracks.content.SearchEngine;
 import de.dennisguse.opentracks.content.SearchEngine.ScoredResult;
 import de.dennisguse.opentracks.content.SearchEngine.SearchQuery;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
@@ -204,7 +204,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         listView.setOnItemClickListener((parent, view, position, id) -> {
             Map<String, Object> item = arrayAdapter.getItem(position);
             Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
-            Long markerId = (Long) item.get(MARKER_ID_FIELD);
+            Marker.Id markerId = (Marker.Id) item.get(MARKER_ID_FIELD);
             Intent intent = IntentUtils.newIntent(SearchListActivity.this, TrackRecordedActivity.class);
             if (markerId != null) {
                 intent = intent.putExtra(TrackRecordedActivity.EXTRA_MARKER_ID, markerId);
@@ -271,7 +271,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         }
         Map<String, Object> item = arrayAdapter.getItem(positions[0]);
         Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
-        Waypoint.Id waypointId = (Waypoint.Id) item.get(MARKER_ID_FIELD);
+        Marker.Id waypointId = (Marker.Id) item.get(MARKER_ID_FIELD);
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
@@ -355,7 +355,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
             if (result.track != null) {
                 output.add(prepareTrackForDisplay(result.track));
             } else {
-                output.add(prepareMarkerForDisplay(result.waypoint));
+                output.add(prepareMarkerForDisplay(result.marker));
             }
         }
         return output;
@@ -367,7 +367,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
      * @param waypoint the marker
      * @return the result map
      */
-    private Map<String, Object> prepareMarkerForDisplay(Waypoint waypoint) {
+    private Map<String, Object> prepareMarkerForDisplay(Marker waypoint) {
         Map<String, Object> resultMap = new HashMap<>();
 
         //TODO: It may be more appropriate to obtain the track name as a join in the retrieval phase of the searchable.
@@ -415,14 +415,14 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         String icon = track.getIcon();
         String category = icon != null && !icon.equals("") ? null : track.getCategory();
 
-        resultMap.put(IS_RECORDING_FIELD, track.getId() == recordingTrackId);
+        resultMap.put(IS_RECORDING_FIELD, track.getId().equals(recordingTrackId));
         resultMap.put(IS_PAUSED_FIELD, recordingTrackPaused);
         resultMap.put(ICON_ID_FIELD, TrackIconUtils.getIconDrawable(icon));
         resultMap.put(ICON_CONTENT_DESCRIPTION_ID_FIELD, R.string.image_track);
         resultMap.put(NAME_FIELD, track.getName());
         resultMap.put(TOTAL_TIME_FIELD, StringUtils.formatElapsedTime(trackStatistics.getTotalTime()));
         resultMap.put(TOTAL_DISTANCE_FIELD, StringUtils.formatDistance(this, trackStatistics.getTotalDistance(), metricUnits));
-        resultMap.put(MARKER_COUNT_FIELD, contentProviderUtils.getWaypointCount(track.getId()));
+        resultMap.put(MARKER_COUNT_FIELD, contentProviderUtils.getMarkerCount(track.getId()));
         resultMap.put(START_TIME_FIELD, trackStatistics.getStartTime_ms());
         resultMap.put(CATEGORY_FIELD, category);
         resultMap.put(DESCRIPTION_FIELD, track.getDescription());

src/main/java/de/dennisguse/opentracks/ShowOnMapProxyActivity.java

@@ -11,7 +11,6 @@ import androidx.appcompat.app.AppCompatActivity;
 import java.util.Set;
 
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.provider.ShareContentProvider;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.util.IntentDashboardUtils;
@@ -31,7 +30,7 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         Set<Track.Id> trackIds = IntentDashboardUtils.extractTrackIdsFromIntent(getIntent());
 
-        showTrackTrackfileFormat(this, trackFileFormat, trackIds);
+        showTrackfileFormat(this, trackFileFormat, trackIds);
 
         finish();
     }
@@ -42,14 +41,14 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
      * @param context  the context
      * @param trackIds the track ids
      */
-    private static void showTrackTrackfileFormat(Context context, TrackFileFormat trackFileFormat, Set<Track.Id> trackIds) {
+    private static void showTrackfileFormat(Context context, TrackFileFormat trackFileFormat, Set<Track.Id> trackIds) {
         if (trackIds.size() == 0) {
             return;
         }
 
         Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.putExtra(TrackPointsColumns.TRACKID, trackIds.toArray(new Track.Id[0])[0]);
+
         Pair<Uri, String> uriAndMime = ShareContentProvider.createURI(trackIds, "SharingTrack", trackFileFormat);
         intent.setDataAndType(uriAndMime.first, uriAndMime.second);
 

src/main/java/de/dennisguse/opentracks/TrackEditActivity.java

@@ -75,7 +75,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
         contentProviderUtils = new ContentProviderUtils(this);
         track = contentProviderUtils.getTrack(trackId);
         if (track == null) {
-            Log.e(TAG, "No track for " + trackId);
+            Log.e(TAG, "No track for " + trackId.getId());
             finish();
             return;
         }

src/main/java/de/dennisguse/opentracks/TrackListActivity.java

@@ -214,6 +214,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        // Reset theme after splash
+        setTheme(R.style.ThemeCustom);
+
         super.onCreate(savedInstanceState);
 
         gpsStatusValue = GpsStatusValue.GPS_NONE;
@@ -263,13 +266,13 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 int descriptionIndex = cursor.getColumnIndex(TracksColumns.DESCRIPTION);
 
                 Track.Id trackId = new Track.Id(cursor.getLong(idIndex));
-                boolean isRecording = trackId == recordingTrackId;
+                boolean isRecording = trackId.equals(recordingTrackId);
                 String icon = cursor.getString(iconIndex);
                 int iconId = TrackIconUtils.getIconDrawable(icon);
                 String name = cursor.getString(nameIndex);
                 String totalTime = StringUtils.formatElapsedTime(cursor.getLong(totalTimeIndex));
                 String totalDistance = StringUtils.formatDistance(TrackListActivity.this, cursor.getDouble(totalDistanceIndex), metricUnits);
-                int markerCount = contentProviderUtils.getWaypointCount(trackId);
+                int markerCount = contentProviderUtils.getMarkerCount(trackId);
                 long startTime = cursor.getLong(startTimeIndex);
                 String category = icon != null && !icon.equals("") ? null : cursor.getString(categoryIndex);
                 String description = cursor.getString(descriptionIndex);

src/main/java/de/dennisguse/opentracks/TrackRecordedActivity.java

@@ -24,18 +24,20 @@ import android.view.MenuItem;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentPagerAdapter;
 import androidx.viewpager.widget.ViewPager;
 
 import com.google.android.material.tabs.TabLayout;
 
 import de.dennisguse.opentracks.content.TrackDataHub;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.ChartFragment;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
+import de.dennisguse.opentracks.fragments.IntervalsFragment;
 import de.dennisguse.opentracks.fragments.StatisticsRecordedFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.settings.SettingsActivity;
@@ -65,8 +67,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
     private TrackDataHub trackDataHub;
     private ViewPager pager;
 
-    // From intent.
-    private Track.Id trackId;
+    private Track track;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -77,42 +78,8 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
 
         trackDataHub = new TrackDataHub(this);
 
-        FragmentPagerAdapter adapter = new FragmentPagerAdapter(getSupportFragmentManager(), 1) {
-            @Override
-            public int getCount() {
-                return 3;
-            }
-
-            @NonNull
-            @Override
-            public Fragment getItem(int position) {
-                switch (position) {
-                    case 0:
-                        return new StatisticsRecordedFragment();
-                    case 1:
-                        return ChartFragment.newInstance(false);
-                    case 2:
-                        return ChartFragment.newInstance(true);
-                    default:
-                        throw new RuntimeException("There isn't Fragment associated with the position: " + position);
-                }
-            }
-
-            @Override
-            public CharSequence getPageTitle(int position) {
-                switch (position) {
-                    case 0:
-                        return getString(R.string.track_detail_stats_tab);
-                    case 1:
-                        return getString(R.string.settings_chart_by_time);
-                    case 2:
-                        return getString(R.string.settings_chart_by_distance);
-                }
-                return "Unknown Tab";
-            }
-        };
         pager = findViewById(R.id.track_detail_activity_view_pager);
-        pager.setAdapter(adapter);
+        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
         TabLayout tabs = findViewById(R.id.track_detail_activity_tablayout);
         tabs.setupWithViewPager(pager);
         if (savedInstanceState != null) {
@@ -133,8 +100,8 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
         // Update UI
         this.invalidateOptionsMenu();
 
-        if (trackId.isValid()) {
-            trackDataHub.loadTrack(trackId);
+        if (track != null) {
+            trackDataHub.loadTrack(track.getId());
         }
     }
 
@@ -172,7 +139,6 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
     public boolean onPrepareOptionsMenu(Menu menu) {
         menu.findItem(R.id.track_detail_markers).setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM);
         menu.findItem(R.id.track_detail_resume_track).setVisible(!PreferencesUtils.isRecording(this));
-        Track track = contentProviderUtils.getTrack(trackId);
         setTitle(track != null ? track.getName() : "");
         return super.onPrepareOptionsMenu(menu);
     }
@@ -182,29 +148,29 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
         Intent intent;
         switch (item.getItemId()) {
             case R.id.track_detail_share:
-                intent = IntentUtils.newShareFileIntent(this, trackId);
+                intent = IntentUtils.newShareFileIntent(this, track.getId());
                 intent = Intent.createChooser(intent, null);
                 startActivity(intent);
                 return true;
             case R.id.track_detail_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, false, trackId);
+                IntentDashboardUtils.startDashboard(this, false, track.getId());
                 return true;
             case R.id.track_detail_markers:
                 intent = IntentUtils.newIntent(this, MarkerListActivity.class)
-                        .putExtra(MarkerListActivity.EXTRA_TRACK_ID, trackId);
+                        .putExtra(MarkerListActivity.EXTRA_TRACK_ID, track.getId());
                 startActivity(intent);
                 return true;
             case R.id.track_detail_edit:
                 intent = IntentUtils.newIntent(this, TrackEditActivity.class)
-                        .putExtra(TrackEditActivity.EXTRA_TRACK_ID, trackId);
+                        .putExtra(TrackEditActivity.EXTRA_TRACK_ID, track.getId());
                 startActivity(intent);
                 return true;
             case R.id.track_detail_delete:
-                deleteTracks(trackId);
+                deleteTracks(track.getId());
                 return true;
             case R.id.track_detail_resume_track:
                 Intent newIntent = IntentUtils.newIntent(TrackRecordedActivity.this, TrackRecordingActivity.class)
-                        .putExtra(TrackRecordingActivity.EXTRA_TRACK_ID, trackId);
+                        .putExtra(TrackRecordingActivity.EXTRA_TRACK_ID, track.getId());
                 startActivity(newIntent);
                 overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
                 finish();
@@ -238,12 +204,12 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
     }
 
     private void handleIntent(Intent intent) {
-        trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
+        Track.Id trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
 
-        Waypoint.Id waypointId = intent.getParcelableExtra(EXTRA_MARKER_ID);
+        Marker.Id waypointId = intent.getParcelableExtra(EXTRA_MARKER_ID);
         if (waypointId != null) {
             // Use the trackId from the marker
-            Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
+            Marker waypoint = contentProviderUtils.getMarker(waypointId);
             if (waypoint == null) {
                 finish();
                 return;
@@ -255,6 +221,8 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
             Log.e(TAG, "TrackDetailActivity needs EXTRA_TRACK_ID.");
             finish();
         }
+
+        track = contentProviderUtils.getTrack(trackId);
     }
 
     public void chooseActivityType(String category) {
@@ -263,8 +231,52 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
 
     @Override
     public void onChooseActivityTypeDone(String iconValue) {
-        Track track = contentProviderUtils.getTrack(trackId);
         String category = getString(TrackIconUtils.getIconActivityType(iconValue));
         TrackUtils.updateTrack(this, track, null, category, null, contentProviderUtils);
     }
+
+    private class CustomFragmentPagerAdapter extends FragmentPagerAdapter {
+
+        public CustomFragmentPagerAdapter(@NonNull FragmentManager fm, int behavior) {
+            super(fm, behavior);
+        }
+
+        @Override
+        public int getCount() {
+            return 4;
+        }
+
+        @NonNull
+        @Override
+        public Fragment getItem(int position) {
+            switch (position) {
+                case 0:
+                    return StatisticsRecordedFragment.newInstance(track.getId());
+                case 1:
+                    return IntervalsFragment.newInstance(track.getId());
+                case 2:
+                    return ChartFragment.newInstance(false);
+                case 3:
+                    return ChartFragment.newInstance(true);
+                default:
+                    throw new RuntimeException("There isn't Fragment associated with the position: " + position);
+            }
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            switch (position) {
+                case 0:
+                    return getString(R.string.track_detail_stats_tab);
+                case 1:
+                    return getString(R.string.track_detail_intervals_tab);
+                case 2:
+                    return getString(R.string.settings_chart_by_time);
+                case 3:
+                    return getString(R.string.settings_chart_by_distance);
+                default:
+                    throw new RuntimeException("There isn't Fragment associated with the position: " + position);
+            }
+        }
+    }
 }

src/main/java/de/dennisguse/opentracks/TrackRecordingActivity.java

@@ -25,6 +25,7 @@ import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.ChartFragment;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
+import de.dennisguse.opentracks.fragments.IntervalsFragment;
 import de.dennisguse.opentracks.fragments.StatisticsRecordingFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
@@ -65,6 +66,9 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     // Preferences
     private boolean recordingTrackPaused;
 
+    // Intervals recording fragment needs Track.Id when the activity creates it.
+    private OnTrackIdListener intervalsListener;
+
     private final Runnable bindChangedCallback = new Runnable() {
         @Override
         public void run() {
@@ -81,6 +85,9 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                 if (trackId == null) {
                     // trackId isn't initialized -> leads a new recording.
                     trackId = service.startNewTrack();
+                    if (intervalsListener != null) {
+                        intervalsListener.onTrackId(trackId);
+                    }
                 } else {
                     // trackId is initialized -> resumes the track.
                     service.resumeTrack(trackId);
@@ -166,6 +173,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             //Activity was recreated.
             trackId = savedInstanceState.getParcelable(EXTRA_TRACK_ID);
         } else {
+            // Resume a track
             trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
             if (trackId != null && contentProviderUtils.getTrack(trackId) == null) {
                 Log.w(TAG, "TrackId does not exists; cannot continue the recording.");
@@ -180,7 +188,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         trackDataHub = new TrackDataHub(this);
 
         pager = findViewById(R.id.track_detail_activity_view_pager);
-        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), 1));
+        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
         TabLayout tabs = findViewById(R.id.track_detail_activity_tablayout);
         tabs.setupWithViewPager(pager);
         if (savedInstanceState != null) {
@@ -372,7 +380,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
 
         @Override
         public int getCount() {
-            return 3;
+            return 4;
         }
 
         @NonNull
@@ -380,10 +388,12 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         public Fragment getItem(int position) {
             switch (position) {
                 case 0:
-                    return new StatisticsRecordingFragment();
+                    return StatisticsRecordingFragment.newInstance();
                 case 1:
-                    return ChartFragment.newInstance(false);
+                    return IntervalsFragment.IntervalsRecordingFragment.newInstance(trackId);
                 case 2:
+                    return ChartFragment.newInstance(false);
+                case 3:
                     return ChartFragment.newInstance(true);
                 default:
                     throw new RuntimeException("There isn't Fragment associated with the position: " + position);
@@ -396,12 +406,25 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                 case 0:
                     return getString(R.string.track_detail_stats_tab);
                 case 1:
-                    return getString(R.string.settings_chart_by_time);
+                    return getString(R.string.track_detail_intervals_tab);
                 case 2:
+                    return getString(R.string.settings_chart_by_time);
+                case 3:
                     return getString(R.string.settings_chart_by_distance);
                 default:
                     throw new RuntimeException("There isn't Fragment associated with the position: " + position);
             }
         }
     }
+
+    public interface OnTrackIdListener {
+        void onTrackId(Track.Id trackId);
+    }
+
+    public void setTrackIdListener(OnTrackIdListener listener) {
+        this.intervalsListener = listener;
+        if (trackId != null) {
+            listener.onTrackId(trackId);
+        }
+    }
 }

src/main/java/de/dennisguse/opentracks/adapters/IntervalStatisticsAdapter.java

@@ -0,0 +1,83 @@
+package de.dennisguse.opentracks.adapters;
+
+import android.content.Context;
+import android.util.Pair;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ArrayAdapter;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.List;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.StringUtils;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
+
+public class IntervalStatisticsAdapter extends ArrayAdapter<IntervalStatistics.Interval> {
+
+    private StackMode stackMode;
+    private boolean metricUnits;
+    private float sumDistance_m;
+
+    public IntervalStatisticsAdapter(Context context, List<IntervalStatistics.Interval> intervalList, StackMode stackMode) {
+        super(context, R.layout.interval_stats_list_item, intervalList);
+        metricUnits = PreferencesUtils.isMetricUnits(context);
+        this.stackMode = stackMode;
+    }
+
+    @NonNull
+    @Override
+    public View getView(int position, @Nullable View intervalView, @NonNull ViewGroup parent) {
+        int actualPosition = stackMode == StackMode.STACK_FROM_TOP ? position : getCount() - 1 - position;
+        IntervalStatistics.Interval interval = getItem(actualPosition);
+        ViewHolder viewHolder;
+
+        if (intervalView == null) {
+            viewHolder = new ViewHolder();
+
+            intervalView = LayoutInflater.from(getContext()).inflate(R.layout.interval_stats_list_item, parent, false);
+
+            viewHolder.distance = intervalView.findViewById(R.id.interval_item_distance);
+            viewHolder.speed = intervalView.findViewById(R.id.interval_item_speed);
+            viewHolder.pace = intervalView.findViewById(R.id.interval_item_pace);
+
+            intervalView.setTag(viewHolder);
+        } else {
+            viewHolder = (ViewHolder) intervalView.getTag();
+        }
+
+        if (actualPosition + 1 == getCount() && actualPosition > 0) {
+            sumDistance_m = actualPosition * getItem(actualPosition - 1).getDistance_m() + interval.getDistance_m();
+        } else {
+            sumDistance_m = (actualPosition + 1) * interval.getDistance_m();
+        }
+        viewHolder.distance.setText(StringUtils.formatDistance(getContext(), sumDistance_m, metricUnits));
+
+        Pair<String, String> speedParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, true);
+        viewHolder.speed.setText(speedParts.first + " " + speedParts.second);
+
+        Pair<String, String> paceParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, false);
+        viewHolder.pace.setText(paceParts.first + " " + paceParts.second);
+
+        return intervalView;
+    }
+
+    /**
+     * Defines the two modes of list items stacking: from top or from bottom.
+     */
+    public enum StackMode {
+        STACK_FROM_BOTTOM,
+        STACK_FROM_TOP;
+    }
+
+    private static class ViewHolder {
+        private TextView distance;
+        private TextView speed;
+        private TextView pace;
+    }
+}

src/main/java/de/dennisguse/opentracks/chart/ChartView.java

@@ -42,7 +42,7 @@ import java.util.List;
 
 import de.dennisguse.opentracks.MarkerDetailActivity;
 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.content.data.Waypoint;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.stats.ExtremityMonitor;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.MarkerUtils;
@@ -87,7 +87,7 @@ public class ChartView extends View {
     private final ChartValueSeries paceSeries;
 
     private final List<ChartPoint> chartPoints = new ArrayList<>();
-    private final List<Waypoint> waypoints = new ArrayList<>();
+    private final List<Marker> waypoints = new ArrayList<>();
     private final ExtremityMonitor xExtremityMonitor = new ExtremityMonitor();
     private final Paint axisPaint;
     private final Paint xAxisMarkerPaint;
@@ -150,9 +150,9 @@ public class ChartView extends View {
             // Check if the y event is within markerHeight of the marker center
             if (Math.abs(event.getY() - topBorder - spacer - markerHeight / 2f) < markerHeight) {
                 int minDistance = Integer.MAX_VALUE;
-                Waypoint nearestWaypoint = null;
+                Marker nearestWaypoint = null;
                 synchronized (waypoints) {
-                    for (Waypoint waypoint : waypoints) {
+                    for (Marker waypoint : waypoints) {
                         int distance = Math.abs(getX(getWaypointXValue(waypoint)) - (int) event.getX() - getScrollX());
                         if (distance < minDistance) {
                             minDistance = distance;
@@ -434,7 +434,7 @@ public class ChartView extends View {
         scrollTo(0, 0);
     }
 
-    public void addWaypoint(Waypoint waypoint) {
+    public void addWaypoint(Marker waypoint) {
         synchronized (waypoints) {
             waypoints.add(waypoint);
         }
@@ -594,7 +594,7 @@ public class ChartView extends View {
      */
     private void drawWaypoints(Canvas canvas) {
         synchronized (waypoints) {
-            for (Waypoint waypoint : waypoints) {
+            for (Marker waypoint : waypoints) {
                 double xValue = getWaypointXValue(waypoint);
                 if (xValue > maxX) {
                     continue;
@@ -980,7 +980,7 @@ public class ChartView extends View {
      *
      * @param waypoint the waypoint
      */
-    private double getWaypointXValue(Waypoint waypoint) {
+    private double getWaypointXValue(Marker waypoint) {
         if (chartByDistance) {
             double lenghtInKm = waypoint.getLength() * UnitConversions.M_TO_KM;
             return metricUnits ? lenghtInKm : lenghtInKm * UnitConversions.KM_TO_MI;

src/main/java/de/dennisguse/opentracks/content/DescriptionGenerator.java

@@ -28,7 +28,7 @@ import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 
 /**
- * Generates descriptions for tracks and waypoints.
+ * Generates descriptions for tracks and markers.
  *
  * @author Jimmy Shih
  */
@@ -136,7 +136,9 @@ public class DescriptionGenerator {
         }
 
         // Elevation gain
-        writeElevation(stats.getTotalElevationGain(), builder, R.string.description_elevation_gain, lineBreak);
+        if (stats.hasTotalElevationGain()) {
+            writeElevation(stats.getTotalElevationGain(), builder, R.string.description_elevation_gain, lineBreak);
+        }
 
         // Recorded time
         builder.append(context.getString(R.string.description_recorded_time, StringUtils.formatDateTime(context, stats.getStartTime_ms())));

src/main/java/de/dennisguse/opentracks/content/SearchEngine.java

@@ -28,17 +28,17 @@ import java.util.Locale;
 import java.util.SortedSet;
 import java.util.TreeSet;
 
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.LocationUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 
 /**
- * Engine for searching for tracks and waypoints by text.
+ * Engine for searching for tracks and markers by text.
  *
  * @author Rodrigo Damazio
  */
@@ -53,12 +53,12 @@ public class SearchEngine {
                     TracksColumns.CATEGORY + " LIKE ?";
 
     /**
-     * WHERE query to get waypoints by name.
+     * WHERE query to get markers by name.
      */
-    private static final String WAYPOINT_SELECTION_QUERY =
-            WaypointsColumns.NAME + " LIKE ? OR " +
-                    WaypointsColumns.DESCRIPTION + " LIKE ? OR " +
-                    WaypointsColumns.CATEGORY + " LIKE ?";
+    private static final String MARKER_SELECTION_QUERY =
+            MarkerColumns.NAME + " LIKE ? OR " +
+                    MarkerColumns.DESCRIPTION + " LIKE ? OR " +
+                    MarkerColumns.CATEGORY + " LIKE ?";
 
     /**
      * Order of track results.
@@ -66,9 +66,9 @@ public class SearchEngine {
     private static final String TRACK_SELECTION_ORDER = TracksColumns._ID + " DESC LIMIT 1000";
 
     /**
-     * Order of waypoint results.
+     * Order of marker results.
      */
-    private static final String WAYPOINT_SELECTION_ORDER = WaypointsColumns._ID + " DESC";
+    private static final String MARKER_SELECTION_ORDER = MarkerColumns._ID + " DESC";
 
     /**
      * How much we promote a match in the track category.
@@ -86,9 +86,9 @@ public class SearchEngine {
     private static final double TRACK_NAME_PROMOTION = 16.0;
 
     /**
-     * How much we promote a waypoint result if it's in the currently-selected track.
+     * How much we promote a marker result if it's in the currently-selected track.
      */
-    private static final double CURRENT_TRACK_WAYPOINT_PROMOTION = 2.0;
+    private static final double CURRENT_TRACK_MARKER_PROMOTION = 2.0;
 
     /**
      * How much we promote a track result if it's the currently-selected track.
@@ -96,9 +96,9 @@ public class SearchEngine {
     private static final double CURRENT_TRACK_DEMOTION = 0.5;
 
     /**
-     * Maximum number of waypoints which will be retrieved and scored.
+     * Maximum number of markers which will be retrieved and scored.
      */
-    private static final int MAX_SCORED_WAYPOINTS = 100;
+    private static final int MAX_SCORED_MARKERS = 100;
 
     /**
      * Oldest timestamp for which we rank based on time (2000-01-01 00:00:00.000)
@@ -115,16 +115,16 @@ public class SearchEngine {
             return scoreDiff;
         }
 
-        // Make tracks come before waypoints.
-        if (r1.waypoint != null && r2.track != null) {
+        // Make tracks come before markers.
+        if (r1.marker != null && r2.track != null) {
             return 1;
-        } else if (r1.track != null && r2.waypoint != null) {
+        } else if (r1.track != null && r2.marker != null) {
             return -1;
         }
 
         // Finally, use arbitrary ordering, by ID.
-        long id1 = r1.track != null ? r1.track.getId().getId() : r1.waypoint.getId().getId();
-        long id2 = r2.track != null ? r2.track.getId().getId() : r2.waypoint.getId().getId();
+        long id1 = r1.track != null ? r1.track.getId().getId() : r1.marker.getId().getId();
+        long id2 = r2.track != null ? r2.track.getId().getId() : r2.marker.getId().getId();
         long idDiff = id2 - id1;
         return Long.signum(idDiff);
     };
@@ -153,7 +153,7 @@ public class SearchEngine {
         TreeSet<ScoredResult> scoredResults = new TreeSet<>(SCORED_RESULT_COMPARATOR);
 
         scoreTrackResults(retrieveTracks(query), query, scoredResults);
-        scoreWaypointResults(retrieveWaypoints(query), query, scoredResults);
+        scoreMarkersResults(retrieveMarkers(query), query, scoredResults);
 
         return scoredResults;
     }
@@ -186,33 +186,33 @@ public class SearchEngine {
     }
 
     /**
-     * Retrieves waypoints matching the given query from the database.
+     * Retrieves markers matching the given query from the database.
      *
      * @param query the query to retrieve for
      */
-    private List<Waypoint> retrieveWaypoints(SearchQuery query) {
-        ArrayList<Waypoint> waypoints = new ArrayList<>();
+    private List<Marker> retrieveMarkers(SearchQuery query) {
+        ArrayList<Marker> markers = new ArrayList<>();
 
         String queryLikeSelection2 = "%" + query.textQuery + "%";
-        String[] waypointSelectionArgs = new String[]{
+        String[] markersSelectionArgs = new String[]{
                 queryLikeSelection2,
                 queryLikeSelection2,
                 queryLikeSelection2
         };
 
-        try (Cursor cursor = providerUtils.getWaypointCursor(WAYPOINT_SELECTION_QUERY, waypointSelectionArgs, WAYPOINT_SELECTION_ORDER, MAX_SCORED_WAYPOINTS)) {
+        try (Cursor cursor = providerUtils.getMarkerCursor(MARKER_SELECTION_QUERY, markersSelectionArgs, MARKER_SELECTION_ORDER, MAX_SCORED_MARKERS)) {
             if (cursor != null) {
-                waypoints.ensureCapacity(cursor.getCount());
+                markers.ensureCapacity(cursor.getCount());
                 while (cursor.moveToNext()) {
-                    Waypoint waypoint = providerUtils.createWaypoint(cursor);
-                    if (LocationUtils.isValidLocation(waypoint.getLocation())) {
-                        waypoints.add(waypoint);
+                    Marker marker = providerUtils.createMarker(cursor);
+                    if (LocationUtils.isValidLocation(marker.getLocation())) {
+                        markers.add(marker);
                     }
                 }
             }
         }
 
-        return waypoints;
+        return markers;
     }
 
     /**
@@ -250,7 +250,7 @@ public class SearchEngine {
         score *= getTimeBoost(query, meanTimestamp);
 
         // Score the currently-selected track lower (user is already there, wouldn't be searching for it).
-        if (track.getId() == query.currentTrackId) {
+        if (track.getId().equals(query.currentTrackId)) {
             score *= CURRENT_TRACK_DEMOTION;
         }
 
@@ -258,40 +258,40 @@ public class SearchEngine {
     }
 
     /**
-     * Scores a collection of waypoint results.
+     * Scores a collection of marker results.
      *
-     * @param waypoints the results to score
-     * @param query     the query to score for
-     * @param output    the collection to fill with scored results
+     * @param markers the results to score
+     * @param query   the query to score for
+     * @param output  the collection to fill with scored results
      */
-    private void scoreWaypointResults(Collection<Waypoint> waypoints, SearchQuery query, Collection<ScoredResult> output) {
-        for (Waypoint waypoint : waypoints) {
+    private void scoreMarkersResults(Collection<Marker> markers, SearchQuery query, Collection<ScoredResult> output) {
+        for (Marker marker : markers) {
             // Calculate the score.
-            double score = scoreWaypointResult(query, waypoint);
+            double score = scoreMarkerResult(query, marker);
 
             // Add to the output.
-            output.add(new ScoredResult(waypoint, score));
+            output.add(new ScoredResult(marker, score));
         }
     }
 
     /**
-     * Scores a single waypoint result.
+     * Scores a single marker result.
      *
-     * @param query    the query to score for
-     * @param waypoint the results to score
-     * @return the score for the waypoint
+     * @param query  the query to score for
+     * @param marker the results to score
+     * @return the score for the marker
      */
-    private double scoreWaypointResult(SearchQuery query, Waypoint waypoint) {
+    private double scoreMarkerResult(SearchQuery query, Marker marker) {
         double score = 1.0;
 
-        Location location = waypoint.getLocation();
-        score *= getTitleBoost(query, waypoint.getName(), waypoint.getDescription(), waypoint.getCategory());
+        Location location = marker.getLocation();
+        score *= getTitleBoost(query, marker.getName(), marker.getDescription(), marker.getCategory());
         score *= getDistanceBoost(query, location.getLatitude(), location.getLongitude());
         score *= getTimeBoost(query, location.getTime());
 
-        // Score waypoints in the currently-selected track higher (searching inside the current track).
-        if (waypoint.getTrackId() != null && waypoint.getTrackId().equals(query.currentTrackId)) {
-            score *= CURRENT_TRACK_WAYPOINT_PROMOTION;
+        // Score markers in the currently-selected track higher (searching inside the current track).
+        if (marker.getTrackId() != null && marker.getTrackId().equals(query.currentTrackId)) {
+            score *= CURRENT_TRACK_MARKER_PROMOTION;
         }
 
         return score;
@@ -301,9 +301,9 @@ public class SearchEngine {
      * Calculates the boosting of the score due to the field(s) in which the match occured.
      *
      * @param query       the query to boost for
-     * @param name        the name of the track or waypoint
-     * @param description the description of the track or waypoint
-     * @param category    the category of the track or waypoint
+     * @param name        the name of the track or marker
+     * @param description the description of the track or marker
+     * @param category    the category of the track or marker
      * @return the total boost to be applied to the result
      */
     private double getTitleBoost(SearchQuery query, String name, String description, String category) {
@@ -398,18 +398,18 @@ public class SearchEngine {
      */
     public static class ScoredResult {
         public final Track track;
-        public final Waypoint waypoint;
+        public final Marker marker;
         final double score;
 
         ScoredResult(Track track, double score) {
             this.track = track;
-            this.waypoint = null;
+            this.marker = null;
             this.score = score;
         }
 
-        ScoredResult(Waypoint waypoint, double score) {
+        ScoredResult(Marker marker, double score) {
             this.track = null;
-            this.waypoint = waypoint;
+            this.marker = marker;
             this.score = score;
         }
 
@@ -418,7 +418,7 @@ public class SearchEngine {
         public String toString() {
             return "ScoredResult ["
                     + (track != null ? ("trackId=" + track.getId().getId() + ", ") : "")
-                    + (waypoint != null ? ("wptId=" + waypoint.getId().getId() + ", ") : "")
+                    + (marker != null ? ("wptId=" + marker.getId().getId() + ", ") : "")
                     + "score=" + score + "]";
         }
     }

src/main/java/de/dennisguse/opentracks/content/TrackDataHub.java

@@ -32,12 +32,12 @@ import java.util.Collections;
 import java.util.Set;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.TrackPointIterator;
 import de.dennisguse.opentracks.util.LocationUtils;
@@ -58,14 +58,14 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
      * We may display more than this number of points.
      */
     @Deprecated
-    private static final int TARGET_DISPLAYED_TRACK_POINTS = 5000;
+    private static final int TARGET_DISPLAYED_TRACKPOINTS = 5000;
 
     /**
-     * Maximum number of waypoints to displayed.
+     * Maximum number of markers to displayed.
      */
     @VisibleForTesting
     @Deprecated
-    private static final int MAX_DISPLAYED_WAYPOINTS = 128;
+    private static final int MAX_DISPLAYED_MARKERS = 128;
 
     private static final String TAG = TrackDataHub.class.getSimpleName();
 
@@ -90,11 +90,11 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
 
     // Registered listeners
     private ContentObserver tracksTableObserver;
-    private ContentObserver waypointsTableObserver;
+    private ContentObserver markersTableObserver;
     private ContentObserver trackPointsTableObserver;
 
     public TrackDataHub(Context context) {
-        this(context, new TrackDataManager(), new ContentProviderUtils(context), TARGET_DISPLAYED_TRACK_POINTS);
+        this(context, new TrackDataManager(), new ContentProviderUtils(context), TARGET_DISPLAYED_TRACKPOINTS);
     }
 
     @VisibleForTesting
@@ -126,13 +126,13 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
         };
         contentResolver.registerContentObserver(TracksColumns.CONTENT_URI, false, tracksTableObserver);
 
-        waypointsTableObserver = new ContentObserver(handler) {
+        markersTableObserver = new ContentObserver(handler) {
             @Override
             public void onChange(boolean selfChange) {
-                notifyWaypointsTableUpdate(trackDataManager.getListenerWaypoints());
+                notifyMarkersTableUpdate(trackDataManager.getListenerMarkers());
             }
         };
-        contentResolver.registerContentObserver(WaypointsColumns.CONTENT_URI, false, waypointsTableObserver);
+        contentResolver.registerContentObserver(MarkerColumns.CONTENT_URI, false, markersTableObserver);
 
         trackPointsTableObserver = new ContentObserver(handler) {
             @Override
@@ -165,7 +165,7 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
         //Unregister listeners
         ContentResolver contentResolver = context.getContentResolver();
         contentResolver.unregisterContentObserver(tracksTableObserver);
-        contentResolver.unregisterContentObserver(waypointsTableObserver);
+        contentResolver.unregisterContentObserver(markersTableObserver);
         contentResolver.unregisterContentObserver(trackPointsTableObserver);
 
         if (handlerThread != null) {
@@ -191,9 +191,9 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
      *
      * @param trackDataListener the track data listener
      */
-    public void registerTrackDataListener(final TrackDataListener trackDataListener, final boolean tracksTable, final boolean waypointsTable, final boolean trackPointsTable_SampleIn, final boolean trackPointsTable_SampleOut) {
+    public void registerTrackDataListener(final TrackDataListener trackDataListener, final boolean tracksTable, final boolean markersTable, final boolean trackPointsTable_SampleIn, final boolean trackPointsTable_SampleOut) {
         runInHandlerThread(() -> {
-            trackDataManager.registerTrackDataListener(trackDataListener, tracksTable, waypointsTable, trackPointsTable_SampleIn, trackPointsTable_SampleOut);
+            trackDataManager.registerTrackDataListener(trackDataListener, tracksTable, markersTable, trackPointsTable_SampleIn, trackPointsTable_SampleOut);
             if (started) {
                 loadDataForListener(trackDataListener);
             }
@@ -250,7 +250,7 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
             listener.clearTrackPoints();
         }
         notifyTrackPointsTableUpdate(true, trackDataManager.getListenerTrackPoints_SampledIn(), trackDataManager.getListenerTrackPoints_SampledOut());
-        notifyWaypointsTableUpdate(trackDataManager.getListenerWaypoints());
+        notifyMarkersTableUpdate(trackDataManager.getListenerMarkers());
     }
 
     /**
@@ -277,8 +277,8 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
             notifyTrackPointsTableUpdate(isOnlyListener, trackDataListeners, sampledOutListeners);
         }
 
-        if (trackDataManager.listensForWaypoints(trackDataListener)) {
-            notifyWaypointsTableUpdate(trackDataListeners);
+        if (trackDataManager.listensForMarkers(trackDataListener)) {
+            notifyMarkersTableUpdate(trackDataListeners);
         }
     }
 
@@ -298,36 +298,36 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
     }
 
     /**
-     * Notifies waypoint table update.
-     * Currently, reloads all the waypoints up to {@link #MAX_DISPLAYED_WAYPOINTS}. To be run in the {@link #handler} thread.
+     * Notifies marker table update.
+     * Currently, reloads all the markers up to {@link #MAX_DISPLAYED_MARKERS}. To be run in the {@link #handler} thread.
      *
      * @param trackDataListeners the track data listeners to notify
      */
-    private void notifyWaypointsTableUpdate(Set<TrackDataListener> trackDataListeners) {
+    private void notifyMarkersTableUpdate(Set<TrackDataListener> trackDataListeners) {
         if (trackDataListeners.isEmpty()) {
             return;
         }
 
         for (TrackDataListener trackDataListener : trackDataListeners) {
-            trackDataListener.clearWaypoints();
+            trackDataListener.clearMarkers();
         }
 
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(selectedTrackId, null, MAX_DISPLAYED_WAYPOINTS)) {
+        try (Cursor cursor = contentProviderUtils.getMarkerCursor(selectedTrackId, null, MAX_DISPLAYED_MARKERS)) {
             if (cursor != null && cursor.moveToFirst()) {
                 do {
-                    Waypoint waypoint = contentProviderUtils.createWaypoint(cursor);
-                    if (!LocationUtils.isValidLocation(waypoint.getLocation())) {
+                    Marker marker = contentProviderUtils.createMarker(cursor);
+                    if (!LocationUtils.isValidLocation(marker.getLocation())) {
                         continue;
                     }
                     for (TrackDataListener trackDataListener : trackDataListeners) {
-                        trackDataListener.onNewWaypoint(waypoint);
+                        trackDataListener.onNewMarker(marker);
                     }
                 } while (cursor.moveToNext());
             }
         }
 
         for (TrackDataListener trackDataListener : trackDataListeners) {
-            trackDataListener.onNewWaypointsDone();
+            trackDataListener.onNewMarkersDone();
         }
     }
 

src/main/java/de/dennisguse/opentracks/content/TrackDataListener.java

@@ -16,9 +16,9 @@
 
 package de.dennisguse.opentracks.content;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 
 /**
  * Listener for track data changes.
@@ -60,20 +60,20 @@ public interface TrackDataListener {
     void onNewTrackPointsDone();
 
     /**
-     * Called to clear previously sent waypoints.
+     * Called to clear previously sent markers.
      */
-    void clearWaypoints();
+    void clearMarkers();
 
     /**
-     * Called when a new waypoint is read.
+     * Called when a new marker is read.
      *
-     * @param waypoint the waypoint
+     * @param marker the marker
      */
-    void onNewWaypoint(Waypoint waypoint);
+    void onNewMarker(Marker marker);
 
     /**
-     * Called when finish sending new waypoints.
-     * This gets called after every batch of calls to {@link #clearWaypoints()} and {@link #onNewWaypoint(Waypoint)}.
+     * Called when finish sending new markers.
+     * This gets called after every batch of calls to {@link #clearMarkers()} and {@link #onNewMarker(Marker)}.
      */
-    void onNewWaypointsDone();
+    void onNewMarkersDone();
 }

src/main/java/de/dennisguse/opentracks/content/TrackDataManager.java

@@ -29,32 +29,32 @@ class TrackDataManager {
     private static final String TAG = TrackDataManager.class.getSimpleName();
 
     private final Set<TrackDataListener> dataListenerTracks = new HashSet<>();
-    private final Set<TrackDataListener> dataListenerWaypoints = new HashSet<>();
+    private final Set<TrackDataListener> dataListenerMarkers = new HashSet<>();
     private final Set<TrackDataListener> dataListenerTrackPoints_SampledIn = new HashSet<>();
     private final Set<TrackDataListener> dataListenerTrackPoints_SampledOut = new HashSet<>();
 
-    void registerTrackDataListener(final TrackDataListener trackDataListener, boolean tracksTable, boolean waypointsTable, boolean trackPointsTable_SampleIn, boolean trackPointsTable_SampleOut) {
+    void registerTrackDataListener(final TrackDataListener trackDataListener, boolean tracksTable, boolean markersTable, boolean trackPointsTable_SampleIn, boolean trackPointsTable_SampleOut) {
         if (tracksTable) dataListenerTracks.add(trackDataListener);
-        if (waypointsTable) dataListenerWaypoints.add(trackDataListener);
+        if (markersTable) dataListenerMarkers.add(trackDataListener);
         if (trackPointsTable_SampleIn) dataListenerTrackPoints_SampledIn.add(trackDataListener);
         if (trackPointsTable_SampleOut) dataListenerTrackPoints_SampledOut.add(trackDataListener);
     }
 
     void unregisterTrackDataListener(TrackDataListener trackDataListener) {
         dataListenerTracks.add(trackDataListener);
-        dataListenerWaypoints.add(trackDataListener);
+        dataListenerMarkers.add(trackDataListener);
         dataListenerTrackPoints_SampledIn.add(trackDataListener);
         dataListenerTrackPoints_SampledOut.add(trackDataListener);
     }
 
     boolean hasListeners() {
-        return dataListenerTracks.size() + dataListenerWaypoints.size() + dataListenerTrackPoints_SampledIn.size() + dataListenerTrackPoints_SampledOut.size() > 0;
+        return dataListenerTracks.size() + dataListenerMarkers.size() + dataListenerTrackPoints_SampledIn.size() + dataListenerTrackPoints_SampledOut.size() > 0;
     }
 
     int getNumberOfListeners() {
         Set<TrackDataListener> listener = new HashSet<>();
         listener.addAll(dataListenerTracks);
-        listener.addAll(dataListenerWaypoints);
+        listener.addAll(dataListenerMarkers);
         listener.addAll(dataListenerTrackPoints_SampledIn);
         listener.addAll(dataListenerTrackPoints_SampledOut);
 
@@ -65,8 +65,8 @@ class TrackDataManager {
         return dataListenerTracks.contains(listener);
     }
 
-    boolean listensForWaypoints(TrackDataListener listener) {
-        return dataListenerWaypoints.contains(listener);
+    boolean listensForMarkers(TrackDataListener listener) {
+        return dataListenerMarkers.contains(listener);
     }
 
     boolean listensForTrackPoints_SampledIn(TrackDataListener listener) {
@@ -81,8 +81,8 @@ class TrackDataManager {
         return dataListenerTracks;
     }
 
-    Set<TrackDataListener> getListenerWaypoints() {
-        return dataListenerWaypoints;
+    Set<TrackDataListener> getListenerMarkers() {
+        return dataListenerMarkers;
     }
 
     Set<TrackDataListener> getListenerTrackPoints_SampledIn() {

src/main/java/de/dennisguse/opentracks/content/data/Marker.java

@@ -30,12 +30,10 @@ import java.util.Objects;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
 /**
- * A waypoint.
- *
  * @author Leif Hendrik Wilden
  * @author Rodrigo Damazio
  */
-public final class Waypoint {
+public final class Marker {
 
     private Id id;
     private String name = "";
@@ -50,15 +48,15 @@ public final class Waypoint {
     private String photoUrl = "";
 
     @VisibleForTesting
-    public Waypoint(@NonNull TrackPoint trackPoint) {
+    public Marker(@NonNull TrackPoint trackPoint) {
         this.location = trackPoint.getLocation();
     }
 
-    public Waypoint(@NonNull Location location) {
+    public Marker(@NonNull Location location) {
         this.location = location;
     }
 
-    public Waypoint(String name, String description, String category, String icon, @NonNull Track.Id trackId, double length, long duration, @NonNull Location location, String photoUrl) {
+    public Marker(String name, String description, String category, String icon, @NonNull Track.Id trackId, double length, long duration, @NonNull Location location, String photoUrl) {
         this.name = name;
         this.description = description;
         this.category = category;

src/main/java/de/dennisguse/opentracks/content/data/MarkerColumns.java

@@ -26,7 +26,7 @@ import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
  *
  * @author Leif Hendrik Wilden
  */
-public interface WaypointsColumns extends BaseColumns {
+public interface MarkerColumns extends BaseColumns {
 
     String TABLE_NAME = "waypoints";
     Uri CONTENT_URI = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME);

src/main/java/de/dennisguse/opentracks/content/data/TrackPoint.java

@@ -32,6 +32,7 @@ public class TrackPoint {
     private Float heartRate_bpm = null;
     private Float cyclingCadence_rpm = null;
     private Float power = null;
+    private Float elevationGain = null;
 
     public TrackPoint() {
         this.location = new Location("");
@@ -59,10 +60,12 @@ public class TrackPoint {
         location.setTime(time);
     }
 
+    @Deprecated //See #316
     public static TrackPoint createPause() {
         return createPauseWithTime(System.currentTimeMillis());
     }
 
+    @Deprecated //See #316
     public static TrackPoint createPauseWithTime(long time) {
         Location pause = new Location(LocationManager.GPS_PROVIDER);
         pause.setLongitude(0);
@@ -71,10 +74,12 @@ public class TrackPoint {
         return new TrackPoint(pause);
     }
 
+    @Deprecated //See #316
     public static TrackPoint createResume() {
         return createResumeWithTime(System.currentTimeMillis());
     }
 
+    @Deprecated //See #316
     public static TrackPoint createResumeWithTime(long time) {
         Location resume = new Location(LocationManager.GPS_PROVIDER);
         resume.setLongitude(0);
@@ -88,6 +93,18 @@ public class TrackPoint {
         return location;
     }
 
+    public boolean hasElevationGain() {
+        return elevationGain != null;
+    }
+
+    public float getElevationGain() {
+        return elevationGain;
+    }
+
+    public void setElevationGain(Float elevationGain) {
+        this.elevationGain = elevationGain;
+    }
+
     public double getLatitude() {
         return location.getLatitude();
     }

src/main/java/de/dennisguse/opentracks/content/data/TrackPointsColumns.java

@@ -51,6 +51,7 @@ public interface TrackPointsColumns extends BaseColumns {
     String SENSOR_HEARTRATE = "sensor_heartrate";
     String SENSOR_CADENCE = "sensor_cadence";
     String SENSOR_POWER = "sensor_power";
+    String ELEVATION_GAIN = "elevation_gain";
 
     String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " ("
             + _ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
@@ -64,7 +65,8 @@ public interface TrackPointsColumns extends BaseColumns {
             + BEARING + " FLOAT, "
             + SENSOR_HEARTRATE + " FLOAT, "
             + SENSOR_CADENCE + " FLOAT, "
-            + SENSOR_POWER + " FLOAT)";
+            + SENSOR_POWER + " FLOAT, "
+            + ELEVATION_GAIN + " FLOAT)";
 
     String CREATE_TABLE_INDEX = "CREATE INDEX " + TABLE_NAME + "_" + TRACKID + "_index ON " + TABLE_NAME + "(" + TRACKID + ")";
 }

src/main/java/de/dennisguse/opentracks/content/provider/CachedTrackPointsIndexes.java

@@ -19,6 +19,7 @@ class CachedTrackPointsIndexes {
     final int sensorHeartRateIndex;
     final int sensorCadenceIndex;
     final int sensorPowerIndex;
+    final int elevationGainIndex;
 
     CachedTrackPointsIndexes(Cursor cursor) {
         idIndex = cursor.getColumnIndex(TrackPointsColumns._ID);
@@ -32,5 +33,6 @@ class CachedTrackPointsIndexes {
         sensorHeartRateIndex = cursor.getColumnIndexOrThrow(TrackPointsColumns.SENSOR_HEARTRATE);
         sensorCadenceIndex = cursor.getColumnIndexOrThrow(TrackPointsColumns.SENSOR_CADENCE);
         sensorPowerIndex = cursor.getColumnIndexOrThrow(TrackPointsColumns.SENSOR_POWER);
+        elevationGainIndex = cursor.getColumnIndexOrThrow(TrackPointsColumns.ELEVATION_GAIN);
     }
 }

src/main/java/de/dennisguse/opentracks/content/provider/ContentProviderUtils.java

@@ -40,12 +40,12 @@ import java.util.UUID;
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.android.ContentResolverWrapper;
 import de.dennisguse.opentracks.android.IContentResolver;
+import de.dennisguse.opentracks.content.data.Marker;
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.TrackUtils;
@@ -69,8 +69,8 @@ public class ContentProviderUtils {
     // The base URI for the app's content provider.
     public static final String CONTENT_BASE_URI = "content://" + AUTHORITY_PACKAGE;
 
-    // Maximum number of waypoints that will be loaded at one time.
-    public static final int MAX_LOADED_WAYPOINTS_POINTS = 10000;
+    // Maximum number of markers that will be loaded at one time.
+    public static final int MAX_LOADED_MARKERS = 10000;
     private static final String ID_SEPARATOR = ",";
 
     private final IContentResolver contentResolver;
@@ -89,13 +89,13 @@ public class ContentProviderUtils {
     }
 
     /**
-     * Clears a track: removes waypoints and trackPoints.
+     * Clears a track: removes markers and trackPoints.
      * Only keeps the track id.
      *
      * @param trackId the track id
      */
     public void clearTrack(Track.Id trackId) {
-        deleteTrackPointsAndWaypoints(trackId);
+        deleteTrackPointsAndMarkers(trackId);
         Track track = new Track();
         track.setId(trackId);
         updateTrack(track);
@@ -176,7 +176,7 @@ public class ContentProviderUtils {
     @VisibleForTesting
     public void deleteAllTracks(Context context) {
         contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, null, null);
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, null, null);
+        contentResolver.delete(MarkerColumns.CONTENT_URI, null, null);
         // Delete tracks last since it triggers a database vaccum call
         contentResolver.delete(TracksColumns.CONTENT_URI, null, null);
 
@@ -193,7 +193,7 @@ public class ContentProviderUtils {
         if (trackId == null) {
             return;
         }
-        deleteTrackPointsAndWaypoints(trackId);
+        deleteTrackPointsAndMarkers(trackId);
 
         // Delete track folder resources.
         FileUtils.deleteDirectoryRecurse(FileUtils.getPhotoDir(context, trackId));
@@ -202,16 +202,11 @@ public class ContentProviderUtils {
         contentResolver.delete(TracksColumns.CONTENT_URI, TracksColumns._ID + "=?", new String[]{Long.toString(trackId.getId())});
     }
 
-    /**
-     * Deletes trackPoints and waypoints of a track.
-     *
-     * @param trackId the track id
-     */
-    private void deleteTrackPointsAndWaypoints(@NonNull Track.Id trackId) {
+    private void deleteTrackPointsAndMarkers(@NonNull Track.Id trackId) {
         String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
 
         contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, TrackPointsColumns.TRACKID + "=?", selectionArgs);
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns.TRACKID + "=?", selectionArgs);
+        contentResolver.delete(MarkerColumns.CONTENT_URI, MarkerColumns.TRACKID + "=?", selectionArgs);
     }
 
     @VisibleForTesting
@@ -338,28 +333,22 @@ public class ContentProviderUtils {
         return values;
     }
 
-
-    /**
-     * Creates a waypoint from a cursor.
-     *
-     * @param cursor the cursor pointing to the waypoint
-     */
-    public Waypoint createWaypoint(Cursor cursor) {
-        int idIndex = cursor.getColumnIndexOrThrow(WaypointsColumns._ID);
-        int nameIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.NAME);
-        int descriptionIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.DESCRIPTION);
-        int categoryIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.CATEGORY);
-        int iconIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.ICON);
-        int trackIdIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.TRACKID);
-        int lengthIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.LENGTH);
-        int durationIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.DURATION);
-        int longitudeIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.LONGITUDE);
-        int latitudeIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.LATITUDE);
-        int timeIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.TIME);
-        int altitudeIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.ALTITUDE);
-        int accuracyIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.ACCURACY);
-        int bearingIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.BEARING);
-        int photoUrlIndex = cursor.getColumnIndexOrThrow(WaypointsColumns.PHOTOURL);
+    public Marker createMarker(Cursor cursor) {
+        int idIndex = cursor.getColumnIndexOrThrow(MarkerColumns._ID);
+        int nameIndex = cursor.getColumnIndexOrThrow(MarkerColumns.NAME);
+        int descriptionIndex = cursor.getColumnIndexOrThrow(MarkerColumns.DESCRIPTION);
+        int categoryIndex = cursor.getColumnIndexOrThrow(MarkerColumns.CATEGORY);
+        int iconIndex = cursor.getColumnIndexOrThrow(MarkerColumns.ICON);
+        int trackIdIndex = cursor.getColumnIndexOrThrow(MarkerColumns.TRACKID);
+        int lengthIndex = cursor.getColumnIndexOrThrow(MarkerColumns.LENGTH);
+        int durationIndex = cursor.getColumnIndexOrThrow(MarkerColumns.DURATION);
+        int longitudeIndex = cursor.getColumnIndexOrThrow(MarkerColumns.LONGITUDE);
+        int latitudeIndex = cursor.getColumnIndexOrThrow(MarkerColumns.LATITUDE);
+        int timeIndex = cursor.getColumnIndexOrThrow(MarkerColumns.TIME);
+        int altitudeIndex = cursor.getColumnIndexOrThrow(MarkerColumns.ALTITUDE);
+        int accuracyIndex = cursor.getColumnIndexOrThrow(MarkerColumns.ACCURACY);
+        int bearingIndex = cursor.getColumnIndexOrThrow(MarkerColumns.BEARING);
+        int photoUrlIndex = cursor.getColumnIndexOrThrow(MarkerColumns.PHOTOURL);
 
         Location location = new Location("");
         if (!cursor.isNull(longitudeIndex) && !cursor.isNull(latitudeIndex)) {
@@ -379,59 +368,56 @@ public class ContentProviderUtils {
             location.setBearing(cursor.getFloat(bearingIndex));
         }
 
-        Waypoint waypoint = new Waypoint(location);
+        Marker marker = new Marker(location);
 
         if (!cursor.isNull(idIndex)) {
-            waypoint.setId(new Waypoint.Id(cursor.getLong(idIndex)));
+            marker.setId(new Marker.Id(cursor.getLong(idIndex)));
         }
         if (!cursor.isNull(nameIndex)) {
-            waypoint.setName(cursor.getString(nameIndex));
+            marker.setName(cursor.getString(nameIndex));
         }
         if (!cursor.isNull(descriptionIndex)) {
-            waypoint.setDescription(cursor.getString(descriptionIndex));
+            marker.setDescription(cursor.getString(descriptionIndex));
         }
         if (!cursor.isNull(categoryIndex)) {
-            waypoint.setCategory(cursor.getString(categoryIndex));
+            marker.setCategory(cursor.getString(categoryIndex));
         }
         if (!cursor.isNull(iconIndex)) {
-            waypoint.setIcon(cursor.getString(iconIndex));
+            marker.setIcon(cursor.getString(iconIndex));
         }
         if (!cursor.isNull(trackIdIndex)) {
-            waypoint.setTrackId(new Track.Id(cursor.getLong(trackIdIndex)));
+            marker.setTrackId(new Track.Id(cursor.getLong(trackIdIndex)));
         }
         if (!cursor.isNull(lengthIndex)) {
-            waypoint.setLength(cursor.getFloat(lengthIndex));
+            marker.setLength(cursor.getFloat(lengthIndex));
         }
         if (!cursor.isNull(durationIndex)) {
-            waypoint.setDuration(cursor.getLong(durationIndex));
+            marker.setDuration(cursor.getLong(durationIndex));
         }
 
         if (!cursor.isNull(photoUrlIndex)) {
-            waypoint.setPhotoUrl(cursor.getString(photoUrlIndex));
+            marker.setPhotoUrl(cursor.getString(photoUrlIndex));
         }
-        return waypoint;
+        return marker;
     }
 
-    public void deleteWaypoint(Context context, Waypoint.Id waypointId) {
-        final Waypoint waypoint = getWaypoint(waypointId);
-        deleteWaypointPhoto(context, waypoint);
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns._ID + "=?", new String[]{Long.toString(waypointId.getId())});
+    public void deleteMarker(Context context, Marker.Id markerId) {
+        final Marker marker = getMarker(markerId);
+        deleteMarkerPhoto(context, marker);
+        contentResolver.delete(MarkerColumns.CONTENT_URI, MarkerColumns._ID + "=?", new String[]{Long.toString(markerId.getId())});
     }
 
     /**
-     * Gets the next waypoint number.
-     *
-     * @param trackId the track id
-     * @return -1 if not able to get the next waypoint number.
+     * @return -1 if not able to get the next marker number.
      */
-    public int getNextWaypointNumber(Track.Id trackId) {
+    public int getNextMarkerNumber(Track.Id trackId) {
         if (!trackId.isValid()) {
             return -1;
         }
-        String[] projection = {WaypointsColumns._ID};
-        String selection = WaypointsColumns.TRACKID + "=?";
+        String[] projection = {MarkerColumns._ID};
+        String selection = MarkerColumns.TRACKID + "=?";
         String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
-        try (Cursor cursor = getWaypointCursor(projection, selection, selectionArgs, WaypointsColumns._ID, -1)) {
+        try (Cursor cursor = getMarkerCursor(projection, selection, selectionArgs, MarkerColumns._ID, -1)) {
             if (cursor != null) {
                 return cursor.getCount();
             }
@@ -439,99 +425,94 @@ public class ContentProviderUtils {
         return -1;
     }
 
-    public Waypoint getWaypoint(Waypoint.Id waypointId) {
-        if (!waypointId.isValid()) {
+    public Marker getMarker(Marker.Id markerId) {
+        if (!markerId.isValid()) {
             return null;
         }
-        try (Cursor cursor = getWaypointCursor(null, WaypointsColumns._ID + "=?",
-                new String[]{Long.toString(waypointId.getId())}, WaypointsColumns._ID, 1)) {
+        try (Cursor cursor = getMarkerCursor(null, MarkerColumns._ID + "=?",
+                new String[]{Long.toString(markerId.getId())}, MarkerColumns._ID, 1)) {
             if (cursor != null && cursor.moveToFirst()) {
-                return createWaypoint(cursor);
+                return createMarker(cursor);
             }
         }
         return null;
     }
 
     /**
-     * Gets a waypoint cursor.
-     * he caller owns the returned cursor and is responsible for closing it.
+     * The caller owns the returned cursor and is responsible for closing it.
      *
      * @param selection     the selection. Can be null
      * @param selectionArgs the selection arguments. Can be null
      * @param sortOrder     the sort order. Can be null
-     * @param maxWaypoints  the maximum number of waypoints to return. -1 for no limit
+     * @param maxCount      the maximum number of markers to return. -1 for no limit
      */
-    public Cursor getWaypointCursor(String selection, String[] selectionArgs, String sortOrder, int maxWaypoints) {
-        return getWaypointCursor(null, selection, selectionArgs, sortOrder, maxWaypoints);
+    public Cursor getMarkerCursor(String selection, String[] selectionArgs, String sortOrder, int maxCount) {
+        return getMarkerCursor(null, selection, selectionArgs, sortOrder, maxCount);
     }
 
     /**
-     * Gets a waypoint cursor for a track.
      * The caller owns the returned cursor and is responsible for closing it.
      *
-     * @param trackId       the track id
-     * @param minWaypointId the minimum waypoint id. null to ignore
-     * @param maxWaypoints  the maximum number of waypoints to return. -1 for no limit
+     * @param trackId     the track id
+     * @param minMarkerId the minimum marker id. null to ignore
+     * @param maxCount    the maximum number of markers to return. -1 for no limit
      */
-    public Cursor getWaypointCursor(Track.Id trackId, @Nullable Waypoint.Id minWaypointId, int maxWaypoints) {
+    public Cursor getMarkerCursor(Track.Id trackId, @Nullable Marker.Id minMarkerId, int maxCount) {
         if (!trackId.isValid()) {
             return null;
         }
 
         String selection;
         String[] selectionArgs;
-        if (minWaypointId != null && minWaypointId.isValid()) {
-            selection = WaypointsColumns.TRACKID + "=? AND " + WaypointsColumns._ID + ">=?";
-            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(minWaypointId.getId())};
+        if (minMarkerId != null && minMarkerId.isValid()) {
+            selection = MarkerColumns.TRACKID + "=? AND " + MarkerColumns._ID + ">=?";
+            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(minMarkerId.getId())};
         } else {
-            selection = WaypointsColumns.TRACKID + "=?";
+            selection = MarkerColumns.TRACKID + "=?";
             selectionArgs = new String[]{Long.toString(trackId.getId())};
         }
-        return getWaypointCursor(null, selection, selectionArgs, WaypointsColumns._ID, maxWaypoints);
+        return getMarkerCursor(null, selection, selectionArgs, MarkerColumns._ID, maxCount);
     }
 
+    @Deprecated //TODO Move to test package
     @VisibleForTesting
-    public List<Waypoint> getWaypoints(Track.Id trackId) {
-        ArrayList<Waypoint> waypoints = new ArrayList<>();
-        try (Cursor cursor = getWaypointCursor(trackId, null, -1)) {
+    public List<Marker> getMarkers(Track.Id trackId) {
+        ArrayList<Marker> markers = new ArrayList<>();
+        try (Cursor cursor = getMarkerCursor(trackId, null, -1)) {
             if (cursor.moveToFirst()) {
                 do {
-                    waypoints.add(createWaypoint(cursor));
+                    markers.add(createMarker(cursor));
                 } while (cursor.moveToNext());
             }
         }
-        return waypoints;
+        return markers;
     }
 
-    public static Loader<Cursor> getWaypointsLoader(Context context, @Nullable Track.Id trackId) {
-        final String[] PROJECTION = new String[]{WaypointsColumns._ID,
-                WaypointsColumns.NAME, WaypointsColumns.DESCRIPTION, WaypointsColumns.CATEGORY,
-                WaypointsColumns.TIME, WaypointsColumns.PHOTOURL,
-                WaypointsColumns.LATITUDE, WaypointsColumns.LONGITUDE};
+    public static Loader<Cursor> getMarkersLoader(Context context, @Nullable Track.Id trackId) {
+        final String[] PROJECTION = new String[]{MarkerColumns._ID,
+                MarkerColumns.NAME, MarkerColumns.DESCRIPTION, MarkerColumns.CATEGORY,
+                MarkerColumns.TIME, MarkerColumns.PHOTOURL,
+                MarkerColumns.LATITUDE, MarkerColumns.LONGITUDE};
 
         if (trackId != null) {
-            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION,
-                    WaypointsColumns.TRACKID + "=?",
+            return new CursorLoader(context, MarkerColumns.CONTENT_URI, PROJECTION,
+                    MarkerColumns.TRACKID + "=?",
                     new String[]{String.valueOf(trackId.getId())}, null);
         } else {
-            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION, null, null, null);
+            return new CursorLoader(context, MarkerColumns.CONTENT_URI, PROJECTION, null, null, null);
         }
     }
 
-    /**
-     * Gets the number of waypoints for a track.
-     *
-     * @param trackId the track id
-     */
-    public int getWaypointCount(Track.Id trackId) {
+    @Deprecated //TODO Expose information via Cursor
+    public int getMarkerCount(Track.Id trackId) {
         if (!trackId.isValid()) {
             return 0;
         }
 
         String[] projection = new String[]{"count(*) AS count"};
-        String selection = WaypointsColumns.TRACKID + "=?";
+        String selection = MarkerColumns.TRACKID + "=?";
         String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
-        try (Cursor cursor = contentResolver.query(WaypointsColumns.CONTENT_URI, projection, selection, selectionArgs, WaypointsColumns._ID)) {
+        try (Cursor cursor = contentResolver.query(MarkerColumns.CONTENT_URI, projection, selection, selectionArgs, MarkerColumns._ID)) {
             if (cursor == null) {
                 return 0;
             }
@@ -541,26 +522,17 @@ public class ContentProviderUtils {
     }
 
     /**
-     * Inserts a waypoint.
-     *
-     * @param waypoint the waypoint
-     * @return the content provider URI of the inserted waypoint.
+     * @return the content provider URI of the inserted marker.
      */
-    public Uri insertWaypoint(@NonNull Waypoint waypoint) {
-        waypoint.setId(null);
-        return contentResolver.insert(WaypointsColumns.CONTENT_URI, createContentValues(waypoint));
+    public Uri insertMarker(@NonNull Marker marker) {
+        marker.setId(null);
+        return contentResolver.insert(MarkerColumns.CONTENT_URI, createContentValues(marker));
     }
 
-    /**
-     * Delete waypoint's photo if any.
-     *
-     * @param context  the context object.
-     * @param waypoint the waypoint object.
-     */
-    private void deleteWaypointPhoto(Context context, Waypoint waypoint) {
-        if (waypoint != null && waypoint.hasPhoto()) {
-            Uri uri = waypoint.getPhotoURI();
-            File file = FileUtils.getPhotoFileIfExists(context, waypoint.getTrackId(), uri);
+    private void deleteMarkerPhoto(Context context, Marker marker) {
+        if (marker != null && marker.hasPhoto()) {
+            Uri uri = marker.getPhotoURI();
+            File file = FileUtils.getPhotoFileIfExists(context, marker.getTrackId(), uri);
             if (file.exists()) {
                 File parent = file.getParentFile();
                 file.delete();
@@ -572,71 +544,67 @@ public class ContentProviderUtils {
     }
 
     /**
-     * Updates a waypoint.
-     * Returns true if successful.
-     *
-     * @param updatedWaypoint the waypoint with updated data.
+     * @param updateMarker the marker with updated data.
+     * @return true if successful.
      */
-    public boolean updateWaypoint(Context context, Waypoint updatedWaypoint) {
-        Waypoint savedWaypoint = getWaypoint(updatedWaypoint.getId());
-        if (!updatedWaypoint.hasPhoto()) {
-            deleteWaypointPhoto(context, savedWaypoint);
+    public boolean updateMarker(Context context, Marker updateMarker) {
+        Marker savedMarker = getMarker(updateMarker.getId());
+        if (!updateMarker.hasPhoto()) {
+            deleteMarkerPhoto(context, savedMarker);
         }
-        int rows = contentResolver.update(WaypointsColumns.CONTENT_URI, createContentValues(updatedWaypoint), WaypointsColumns._ID + "=?", new String[]{Long.toString(updatedWaypoint.getId().getId())});
+        int rows = contentResolver.update(MarkerColumns.CONTENT_URI, createContentValues(updateMarker), MarkerColumns._ID + "=?", new String[]{Long.toString(updateMarker.getId().getId())});
         return rows == 1;
     }
 
-    ContentValues createContentValues(@NonNull Waypoint waypoint) {
+    ContentValues createContentValues(@NonNull Marker marker) {
         ContentValues values = new ContentValues();
 
-        if (waypoint.getId() != null && waypoint.getId().isValid()) {
-            values.put(WaypointsColumns._ID, waypoint.getId().getId());
+        if (marker.getId() != null && marker.getId().isValid()) {
+            values.put(MarkerColumns._ID, marker.getId().getId());
         }
-        values.put(WaypointsColumns.NAME, waypoint.getName());
-        values.put(WaypointsColumns.DESCRIPTION, waypoint.getDescription());
-        values.put(WaypointsColumns.CATEGORY, waypoint.getCategory());
-        values.put(WaypointsColumns.ICON, waypoint.getIcon());
-        if (waypoint.getTrackId() != null) {
-            values.put(WaypointsColumns.TRACKID, waypoint.getTrackId().getId());
+        values.put(MarkerColumns.NAME, marker.getName());
+        values.put(MarkerColumns.DESCRIPTION, marker.getDescription());
+        values.put(MarkerColumns.CATEGORY, marker.getCategory());
+        values.put(MarkerColumns.ICON, marker.getIcon());
+        if (marker.getTrackId() != null) {
+            values.put(MarkerColumns.TRACKID, marker.getTrackId().getId());
         }
-        values.put(WaypointsColumns.LENGTH, waypoint.getLength());
-        values.put(WaypointsColumns.DURATION, waypoint.getDuration());
+        values.put(MarkerColumns.LENGTH, marker.getLength());
+        values.put(MarkerColumns.DURATION, marker.getDuration());
 
-        Location location = waypoint.getLocation();
-        values.put(WaypointsColumns.LONGITUDE, (int) (location.getLongitude() * 1E6));
-        values.put(WaypointsColumns.LATITUDE, (int) (location.getLatitude() * 1E6));
-        values.put(WaypointsColumns.TIME, location.getTime());
+        Location location = marker.getLocation();
+        values.put(MarkerColumns.LONGITUDE, (int) (location.getLongitude() * 1E6));
+        values.put(MarkerColumns.LATITUDE, (int) (location.getLatitude() * 1E6));
+        values.put(MarkerColumns.TIME, location.getTime());
         if (location.hasAltitude()) {
-            values.put(WaypointsColumns.ALTITUDE, location.getAltitude());
+            values.put(MarkerColumns.ALTITUDE, location.getAltitude());
         }
         if (location.hasAccuracy()) {
-            values.put(WaypointsColumns.ACCURACY, location.getAccuracy());
+            values.put(MarkerColumns.ACCURACY, location.getAccuracy());
         }
         if (location.hasBearing()) {
-            values.put(WaypointsColumns.BEARING, location.getBearing());
+            values.put(MarkerColumns.BEARING, location.getBearing());
         }
 
-        values.put(WaypointsColumns.PHOTOURL, waypoint.getPhotoUrl());
+        values.put(MarkerColumns.PHOTOURL, marker.getPhotoUrl());
         return values;
     }
 
     /**
-     * Gets a waypoint cursor.
-     *
      * @param projection    the projection
      * @param selection     the selection
      * @param selectionArgs the selection args
      * @param sortOrder     the sort order
-     * @param maxWaypoints  the maximum number of waypoints
+     * @param maxCount      the maximum number of markers
      */
-    private Cursor getWaypointCursor(String[] projection, String selection, String[] selectionArgs, String sortOrder, int maxWaypoints) {
+    private Cursor getMarkerCursor(String[] projection, String selection, String[] selectionArgs, String sortOrder, int maxCount) {
         if (sortOrder == null) {
-            sortOrder = WaypointsColumns._ID;
+            sortOrder = MarkerColumns._ID;
         }
-        if (maxWaypoints >= 0) {
-            sortOrder += " LIMIT " + maxWaypoints;
+        if (maxCount >= 0) {
+            sortOrder += " LIMIT " + maxCount;
         }
-        return contentResolver.query(WaypointsColumns.CONTENT_URI, projection, selection, selectionArgs, sortOrder);
+        return contentResolver.query(MarkerColumns.CONTENT_URI, projection, selection, selectionArgs, sortOrder);
     }
 
     /**
@@ -680,6 +648,10 @@ public class ContentProviderUtils {
             trackPoint.setPower(cursor.getFloat(indexes.sensorPowerIndex));
         }
 
+        if (!cursor.isNull(indexes.elevationGainIndex)) {
+            trackPoint.setElevationGain(cursor.getFloat(indexes.elevationGainIndex));
+        }
+
         return trackPoint;
     }
 
@@ -836,7 +808,7 @@ public class ContentProviderUtils {
     /**
      * Creates the {@link ContentValues} for a {@link TrackPoint}.
      *
-     * @param trackPoint the trackPoint
+     * @param trackPoint the trackPointstats_pace_km#87
      * @param trackId    the track id
      */
     private ContentValues createContentValues(TrackPoint trackPoint, Track.Id trackId) {
@@ -868,6 +840,11 @@ public class ContentProviderUtils {
         if (trackPoint.hasPower()) {
             values.put(TrackPointsColumns.SENSOR_POWER, trackPoint.getPower());
         }
+
+        if (trackPoint.hasElevationGain()) {
+            values.put(TrackPointsColumns.ELEVATION_GAIN, trackPoint.getElevationGain());
+        }
+
         return values;
     }
 

src/main/java/de/dennisguse/opentracks/content/provider/CustomContentProvider.java

@@ -33,9 +33,9 @@ import android.util.Log;
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 
 /**
  * A {@link ContentProvider} that handles access to track points, tracks, and waypoints tables.
@@ -61,9 +61,9 @@ public class CustomContentProvider extends ContentProvider {
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, TracksColumns.CONTENT_URI.getPath(), UrlType.TRACKS.ordinal());
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, TracksColumns.CONTENT_URI.getPath() + "/*", UrlType.TRACKS_BY_ID.ordinal());
 
-        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI.getPath(), UrlType.WAYPOINTS.ordinal());
-        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI.getPath() + "/#", UrlType.WAYPOINTS_BY_ID.ordinal());
-        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI_BY_TRACKID.getPath() + "/*", UrlType.WAYPOINTS_BY_TRACKID.ordinal());
+        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, MarkerColumns.CONTENT_URI.getPath(), UrlType.WAYPOINTS.ordinal());
+        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, MarkerColumns.CONTENT_URI.getPath() + "/#", UrlType.WAYPOINTS_BY_ID.ordinal());
+        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, MarkerColumns.CONTENT_URI_BY_TRACKID.getPath() + "/*", UrlType.WAYPOINTS_BY_TRACKID.ordinal());
     }
 
     @Override
@@ -101,7 +101,7 @@ public class CustomContentProvider extends ContentProvider {
                 shouldVacuum = true;
                 break;
             case WAYPOINTS:
-                table = WaypointsColumns.TABLE_NAME;
+                table = MarkerColumns.TABLE_NAME;
                 break;
             default:
                 throw new IllegalArgumentException("Unknown URL " + url);
@@ -139,10 +139,10 @@ public class CustomContentProvider extends ContentProvider {
             case TRACKS_BY_ID:
                 return TracksColumns.CONTENT_ITEMTYPE;
             case WAYPOINTS:
-                return WaypointsColumns.CONTENT_TYPE;
+                return MarkerColumns.CONTENT_TYPE;
             case WAYPOINTS_BY_ID:
             case WAYPOINTS_BY_TRACKID:
-                return WaypointsColumns.CONTENT_ITEMTYPE;
+                return MarkerColumns.CONTENT_ITEMTYPE;
             default:
                 throw new IllegalArgumentException("Unknown URL " + url);
         }
@@ -214,16 +214,16 @@ public class CustomContentProvider extends ContentProvider {
                 queryBuilder.appendWhere(TracksColumns._ID + " IN (" + TextUtils.join(SQL_LIST_DELIMITER, ContentProviderUtils.parseTrackIdsFromUri(url)) + ")");
                 break;
             case WAYPOINTS:
-                queryBuilder.setTables(WaypointsColumns.TABLE_NAME);
-                sortOrder = sort != null ? sort : WaypointsColumns.DEFAULT_SORT_ORDER;
+                queryBuilder.setTables(MarkerColumns.TABLE_NAME);
+                sortOrder = sort != null ? sort : MarkerColumns.DEFAULT_SORT_ORDER;
                 break;
             case WAYPOINTS_BY_ID:
-                queryBuilder.setTables(WaypointsColumns.TABLE_NAME);
-                queryBuilder.appendWhere(WaypointsColumns._ID + "=" + ContentUris.parseId(url));
+                queryBuilder.setTables(MarkerColumns.TABLE_NAME);
+                queryBuilder.appendWhere(MarkerColumns._ID + "=" + ContentUris.parseId(url));
                 break;
             case WAYPOINTS_BY_TRACKID:
-                queryBuilder.setTables(WaypointsColumns.TABLE_NAME);
-                queryBuilder.appendWhere(WaypointsColumns.TRACKID + " IN (" + TextUtils.join(SQL_LIST_DELIMITER, ContentProviderUtils.parseTrackIdsFromUri(url)) + ")");
+                queryBuilder.setTables(MarkerColumns.TABLE_NAME);
+                queryBuilder.appendWhere(MarkerColumns.TRACKID + " IN (" + TextUtils.join(SQL_LIST_DELIMITER, ContentProviderUtils.parseTrackIdsFromUri(url)) + ")");
                 break;
             default:
                 throw new IllegalArgumentException("Unknown url " + url);
@@ -262,12 +262,12 @@ public class CustomContentProvider extends ContentProvider {
                 }
                 break;
             case WAYPOINTS:
-                table = WaypointsColumns.TABLE_NAME;
+                table = MarkerColumns.TABLE_NAME;
                 whereClause = where;
                 break;
             case WAYPOINTS_BY_ID:
-                table = WaypointsColumns.TABLE_NAME;
-                whereClause = WaypointsColumns._ID + "=" + ContentUris.parseId(url);
+                table = MarkerColumns.TABLE_NAME;
+                whereClause = MarkerColumns._ID + "=" + ContentUris.parseId(url);
                 if (!TextUtils.isEmpty(where)) {
                     whereClause += " AND (" + where + ")";
                 }
@@ -368,9 +368,9 @@ public class CustomContentProvider extends ContentProvider {
      * @param contentValues the content values
      */
     private Uri insertWaypoint(Uri url, ContentValues contentValues) {
-        long rowId = db.insert(WaypointsColumns.TABLE_NAME, WaypointsColumns._ID, contentValues);
+        long rowId = db.insert(MarkerColumns.TABLE_NAME, MarkerColumns._ID, contentValues);
         if (rowId >= 0) {
-            return ContentUris.appendId(WaypointsColumns.CONTENT_URI.buildUpon(), rowId).build();
+            return ContentUris.appendId(MarkerColumns.CONTENT_URI.buildUpon(), rowId).build();
         }
         throw new SQLException("Failed to insert a waypoint " + url);
     }

src/main/java/de/dennisguse/opentracks/content/provider/CustomSQLiteOpenHelper.java

@@ -11,10 +11,10 @@ import androidx.annotation.VisibleForTesting;
 
 import java.util.UUID;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.util.UUIDUtils;
 
 /**
@@ -25,7 +25,7 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
 
     private static final String TAG = CustomSQLiteOpenHelper.class.getSimpleName();
 
-    private static final int DATABASE_VERSION = 26;
+    private static final int DATABASE_VERSION = 27;
 
     @VisibleForTesting
     public static final String DATABASE_NAME = "database.db";
@@ -52,8 +52,8 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
         db.execSQL(TracksColumns.CREATE_TABLE);
         db.execSQL(TracksColumns.CREATE_TABLE_INDEX);
 
-        db.execSQL(WaypointsColumns.CREATE_TABLE);
-        db.execSQL(WaypointsColumns.CREATE_TABLE_INDEX);
+        db.execSQL(MarkerColumns.CREATE_TABLE);
+        db.execSQL(MarkerColumns.CREATE_TABLE_INDEX);
     }
 
     @Override
@@ -70,6 +70,10 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                 case 26:
                     upgradeFrom25to26(db);
                     break;
+                case 27:
+                    upgradeFrom26to27(db);
+                    break;
+
 
                 default:
                     throw new RuntimeException("Not implemented: upgrade to " + toVersion);
@@ -91,6 +95,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                 case 25:
                     downgradeFrom26to25(db);
                     break;
+                case 26:
+                    downgradeFrom27to26(db);
+                    break;
 
                 default:
                     throw new RuntimeException("Not implemented: downgrade to " + toVersion);
@@ -166,7 +173,7 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                     Track.Id trackId = new Track.Id(cursor.getLong(trackIdIndex));
                     ContentValues cv = new ContentValues();
                     cv.put("uuid", UUIDUtils.toBytes(UUID.randomUUID()));
-                    db.update("tracks", cv, "_id = ?", new String[]{String.valueOf(trackId)});
+                    db.update("tracks", cv, "_id = ?", new String[]{String.valueOf(trackId.getId())});
                 } while (cursor.moveToNext());
             }
         }
@@ -190,4 +197,27 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
         db.setTransactionSuccessful();
         db.endTransaction();
     }
+
+    private void upgradeFrom26to27(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        db.execSQL("ALTER TABLE trackpoints ADD COLUMN elevation_gain FLOAT");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
+
+    private void downgradeFrom27to26(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        db.execSQL("ALTER TABLE trackpoints RENAME TO trackpoints_old");
+        db.execSQL("CREATE TABLE trackpoints (_id INTEGER PRIMARY KEY AUTOINCREMENT, trackid INTEGER, longitude INTEGER, latitude INTEGER, time INTEGER, elevation FLOAT, accuracy FLOAT, speed FLOAT, bearing FLOAT, sensor_heartrate FLOAT, sensor_cadence FLOAT, sensor_power FLOAT)");
+        db.execSQL("INSERT INTO trackpoints SELECT _id, trackid, longitude, latitude, time, elevation, accuracy, speed, bearing, sensor_heartrate, sensor_cadence, sensor_power FROM trackpoints_old");
+        db.execSQL("DROP TABLE trackpoints_old");
+
+        db.execSQL("CREATE INDEX trackpoints_trackid_index ON trackpoints(trackid)");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
 }

src/main/java/de/dennisguse/opentracks/fragments/ChartFragment.java

@@ -37,9 +37,9 @@ import de.dennisguse.opentracks.chart.ChartPoint;
 import de.dennisguse.opentracks.chart.ChartView;
 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.TrackDataListener;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
 import de.dennisguse.opentracks.util.LocationUtils;
@@ -242,21 +242,21 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     }
 
     @Override
-    public void clearWaypoints() {
+    public void clearMarkers() {
         if (isResumed()) {
             chartView.clearWaypoints();
         }
     }
 
     @Override
-    public void onNewWaypoint(Waypoint waypoint) {
-        if (isResumed() && waypoint != null && LocationUtils.isValidLocation(waypoint.getLocation())) {
-            chartView.addWaypoint(waypoint);
+    public void onNewMarker(Marker marker) {
+        if (isResumed() && marker != null && LocationUtils.isValidLocation(marker.getLocation())) {
+            chartView.addWaypoint(marker);
         }
     }
 
     @Override
-    public void onNewWaypointsDone() {
+    public void onNewMarkersDone() {
         if (isResumed()) {
             runOnUiThread(updateChart);
         }

src/main/java/de/dennisguse/opentracks/fragments/DeleteMarkerDialogFragment.java

@@ -26,7 +26,7 @@ import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.content.data.Waypoint;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.DialogUtils;
 
@@ -42,7 +42,7 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
 
     private DeleteMarkerCaller caller;
 
-    public static void showDialog(FragmentManager fragmentManager, Waypoint.Id... waypointIds) {
+    public static void showDialog(FragmentManager fragmentManager, Marker.Id... waypointIds) {
         Bundle bundle = new Bundle();
         bundle.putParcelableArray(KEY_MARKER_IDS, waypointIds);
 
@@ -64,23 +64,23 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final Waypoint.Id[] waypointIds = (Waypoint.Id[]) getArguments().getParcelableArray(KEY_MARKER_IDS);
+        final Marker.Id[] markerIds = (Marker.Id[]) getArguments().getParcelableArray(KEY_MARKER_IDS);
 
         final FragmentActivity fragmentActivity = getActivity();
         int titleId;
         int messageId;
-        if (waypointIds == null) {
+        if (markerIds == null) {
             titleId = R.string.generic_delete_all_confirm_title;
             messageId = R.string.marker_delete_all_confirm_message;
         } else {
-            titleId = waypointIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.marker_delete_one_confirm_title;
-            messageId = waypointIds.length > 1 ? R.string.marker_delete_multiple_confirm_message : R.string.marker_delete_one_confirm_message;
+            titleId = markerIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.marker_delete_one_confirm_title;
+            messageId = markerIds.length > 1 ? R.string.marker_delete_multiple_confirm_message : R.string.marker_delete_one_confirm_message;
         }
         return DialogUtils.createConfirmationDialog(
                 fragmentActivity, titleId, getString(messageId), (dialog, which) -> new Thread(() -> {
                     ContentProviderUtils contentProviderUtils = new ContentProviderUtils(fragmentActivity);
-                    for (Waypoint.Id waypointId : waypointIds) {
-                        contentProviderUtils.deleteWaypoint(getContext(), waypointId);
+                    for (Marker.Id markerId : markerIds) {
+                        contentProviderUtils.deleteMarker(getContext(), markerId);
                     }
                     caller.onDeleteMarkerDone();
                 }).start());

src/main/java/de/dennisguse/opentracks/fragments/ExportProgressDialogFragment.java

@@ -38,6 +38,7 @@ import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.io.file.ExportFile;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 import de.dennisguse.opentracks.util.DialogUtils;
@@ -208,33 +209,32 @@ public class ExportProgressDialogFragment extends DialogFragment {
         private Boolean exportTrack(Context context, Track track) {
             TrackExporter trackExporter = trackFileFormat.newTrackExporter(context);
 
-            //TODO Move to helper function
-            String fileName = track.getId() + "." + trackFileFormat.getExtension();
+            DocumentFile exportDocumentFile = ExportFile.getExportDocumentFile(
+                    track.getId(),
+                    trackFileFormat.getExtension(),
+                    directory,
+                    trackFileFormat.getMimeType()
+            );
 
-            // Overwrite a file if it exists; DocumentFile.createFile() creates a new file appending a suffix if the displayname already exists.
-            DocumentFile file = directory.findFile(fileName);
-            if (file == null) {
-                file = directory.createFile(trackFileFormat.getMimeType(), fileName);
-            }
-
-            try (OutputStream outputStream = context.getContentResolver().openOutputStream(file.getUri())) {
+            try (OutputStream outputStream = context.getContentResolver().openOutputStream(exportDocumentFile.getUri())) {
                 if (trackExporter.writeTrack(track, outputStream)) {
                     return true;
                 } else {
-                    if (!file.delete()) {
-                        Log.e(TAG, "Unable to delete file");
+                    if (!exportDocumentFile.delete()) {
+                        Log.e(TAG, "Unable to delete exportDocumentFile");
                     }
                     Log.e(TAG, "Unable to export track");
                     return false;
                 }
             } catch (FileNotFoundException e) {
-                Log.e(TAG, "Unable to open file " + file.getName(), e);
+                Log.e(TAG, "Unable to open exportDocumentFile " + exportDocumentFile.getName(), e);
                 return false;
             } catch (IOException e) {
-                Log.e(TAG, "Unable to close file output stream", e);
+                Log.e(TAG, "Unable to close exportDocumentFile output stream", e);
                 return false;
             }
         }
+
     }
 
     public interface DismissCallback {

src/main/java/de/dennisguse/opentracks/fragments/IntervalsFragment.java

@@ -0,0 +1,212 @@
+package de.dennisguse.opentracks.fragments;
+
+import android.content.SharedPreferences;
+import android.os.Bundle;
+import android.os.Handler;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import android.widget.Spinner;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModelProvider;
+
+import java.util.Arrays;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.TrackRecordingActivity;
+import de.dennisguse.opentracks.adapters.IntervalStatisticsAdapter;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.UnitConversions;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
+import de.dennisguse.opentracks.viewmodels.IntervalStatisticsModel;
+
+/**
+ * A fragment to display the intervals from recorded track.
+ */
+public class IntervalsFragment extends Fragment {
+
+    private static final String TAG = IntervalsFragment.class.getSimpleName();
+
+    private static final String TRACK_ID_KEY = "trackId";
+
+    private IntervalStatisticsModel viewModel;
+    private ListView intervalListView;
+    protected IntervalStatisticsAdapter.StackMode stackModeListView;
+    private IntervalStatisticsModel.IntervalOption selectedInterval;
+    private IntervalStatisticsAdapter adapter;
+
+    protected Spinner spinnerIntervals;
+    protected TextView spinnerIntervalsUnit;
+
+    private Track.Id trackId;
+
+    protected final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
+        if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
+            if (spinnerIntervalsUnit != null) {
+                spinnerIntervalsUnit.setText(PreferencesUtils.isMetricUnits(getContext()) ? getContext().getString(R.string.unit_kilometer) : getContext().getString(R.string.unit_mile));
+                intervalChanged();
+            }
+        }
+    };
+
+    public static Fragment newInstance(Track.Id trackId) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(TRACK_ID_KEY, trackId);
+
+        Fragment fragment = new IntervalsFragment();
+        fragment.setArguments(bundle);
+        return fragment;
+    }
+
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.interval_list_view, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        PreferencesUtils.register(getContext(), sharedPreferenceChangeListener);
+
+        if (savedInstanceState != null) {
+            trackId = savedInstanceState.getParcelable(TRACK_ID_KEY);
+        } else {
+            trackId = getArguments().getParcelable(TRACK_ID_KEY);
+        }
+
+        intervalListView = view.findViewById(R.id.interval_list);
+        intervalListView.setEmptyView(view.findViewById(R.id.interval_list_empty_view));
+
+        stackModeListView = IntervalStatisticsAdapter.StackMode.STACK_FROM_TOP;
+
+        viewModel = new ViewModelProvider(this).get(IntervalStatisticsModel.class);
+
+        spinnerIntervals = view.findViewById(R.id.spinner_intervals);
+
+        int[] intValues = Arrays.stream(IntervalStatisticsModel.IntervalOption.values()).mapToInt(i -> i.getValue()).toArray();
+
+        spinnerIntervals.setAdapter(new ArrayAdapter<>(getContext(), android.R.layout.simple_spinner_dropdown_item, Arrays.stream(intValues).mapToObj(String::valueOf).toArray(String[]::new)));
+        spinnerIntervalsUnit = view.findViewById(R.id.spinner_intervals_unit);
+        spinnerIntervalsUnit.setText(PreferencesUtils.isMetricUnits(getContext()) ? getContext().getString(R.string.unit_kilometer) : getContext().getString(R.string.unit_mile));
+
+        spinnerIntervals.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
+                selectedInterval = IntervalStatisticsModel.IntervalOption.values()[i];
+                intervalChanged();
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> adapterView) {
+
+            }
+        });
+
+        intervalChanged();
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);
+
+        intervalListView = null;
+        adapter = null;
+        spinnerIntervals = null;
+        spinnerIntervalsUnit = null;
+        viewModel = null;
+    }
+
+    @Override
+    public void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putParcelable(TRACK_ID_KEY, trackId);
+    }
+
+    /**
+     * Update intervals through {@link IntervalStatisticsModel} view model.
+     */
+    public void intervalChanged() {
+        if (viewModel == null || intervalListView == null) {
+            return;
+        }
+
+        LiveData<IntervalStatistics> liveData = viewModel.getIntervalStats(trackId, selectedInterval);
+        liveData.observe(getActivity(), intervalStatistics -> {
+            if (intervalStatistics != null) {
+                adapter = new IntervalStatisticsAdapter(getContext(), intervalStatistics.getIntervalList(), stackModeListView);
+                intervalListView.setAdapter(adapter);
+            }
+        });
+    }
+
+    public void setTrackId(Track.Id trackId) {
+        this.trackId = trackId;
+    }
+
+    public static class IntervalsRecordingFragment extends IntervalsFragment implements TrackRecordingActivity.OnTrackIdListener {
+        // Refreshing intervals stats it's not so demanding so 5 seconds is enough to balance performance and user experience.
+        private static final long UI_UPDATE_INTERVAL = 5 * UnitConversions.ONE_SECOND_MS;
+
+        private Handler intervalHandler;
+
+        private final Runnable intervalRunner = new Runnable() {
+            @Override
+            public void run() {
+                if (isResumed()) {
+                    updateIntervals();
+                    intervalHandler.postDelayed(intervalRunner, UI_UPDATE_INTERVAL);
+                }
+            }
+        };
+
+        public static Fragment newInstance(Track.Id trackId) {
+            Bundle bundle = new Bundle();
+            bundle.putParcelable(TRACK_ID_KEY, trackId);
+
+            Fragment fragment = new IntervalsRecordingFragment();
+            fragment.setArguments(bundle);
+            return fragment;
+        }
+
+        @Override
+        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+            super.onViewCreated(view, savedInstanceState);
+            ((TrackRecordingActivity) getActivity()).setTrackIdListener(this);
+            intervalHandler = new Handler();
+            stackModeListView = IntervalStatisticsAdapter.StackMode.STACK_FROM_BOTTOM;
+        }
+
+        @Override
+        public void onResume() {
+            super.onResume();
+            intervalHandler.post(intervalRunner);
+        }
+
+        @Override
+        public void onPause() {
+            super.onPause();
+            intervalHandler.removeCallbacks(intervalRunner);
+        }
+
+        private void updateIntervals() {
+            intervalChanged();
+        }
+
+        @Override
+        public void onTrackId(Track.Id trackId) {
+            setTrackId(trackId);
+        }
+    }
+}

src/main/java/de/dennisguse/opentracks/fragments/MarkerDetailFragment.java

@@ -40,7 +40,7 @@ import androidx.fragment.app.FragmentActivity;
 
 import de.dennisguse.opentracks.MarkerEditActivity;
 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.content.data.Waypoint;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
@@ -67,7 +67,7 @@ public class MarkerDetailFragment extends Fragment {
     private ImageView photoView;
     private ImageView textGradient;
     private LinearLayout waypointInfo;
-    private Waypoint waypoint;
+    private Marker waypoint;
     private final Runnable hideText = new Runnable() {
         @Override
         public void run() {
@@ -93,7 +93,7 @@ public class MarkerDetailFragment extends Fragment {
         }
     };
 
-    public static MarkerDetailFragment newInstance(Waypoint.Id waypointId) {
+    public static MarkerDetailFragment newInstance(Marker.Id waypointId) {
         Bundle bundle = new Bundle();
         bundle.putParcelable(KEY_MARKER_ID, waypointId);
 
@@ -106,7 +106,7 @@ public class MarkerDetailFragment extends Fragment {
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        Waypoint.Id waypointId = getArguments().getParcelable(KEY_MARKER_ID);
+        Marker.Id waypointId = getArguments().getParcelable(KEY_MARKER_ID);
         if (waypointId == null) {
             Log.d(TAG, "invalid marker id");
             getParentFragmentManager().popBackStack();
@@ -182,7 +182,7 @@ public class MarkerDetailFragment extends Fragment {
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
-        Waypoint.Id waypointId = getArguments().getParcelable(KEY_MARKER_ID); //TODO Should only happen in onCreate?
+        Marker.Id waypointId = getArguments().getParcelable(KEY_MARKER_ID); //TODO Should only happen in onCreate?
         FragmentActivity fragmentActivity = getActivity();
         Intent intent;
         switch (item.getItemId()) {
@@ -216,7 +216,7 @@ public class MarkerDetailFragment extends Fragment {
      */
     private void updateWaypoint(boolean refresh) {
         if (refresh || waypoint == null) {
-            waypoint = contentProviderUtils.getWaypoint(getArguments().getParcelable(KEY_MARKER_ID)); //TODO Should only happen in onCreate?
+            waypoint = contentProviderUtils.getMarker(getArguments().getParcelable(KEY_MARKER_ID)); //TODO Should only happen in onCreate?
             if (waypoint == null) {
                 Log.d(TAG, "waypoint is null");
                 getParentFragmentManager().popBackStack();

src/main/java/de/dennisguse/opentracks/fragments/StatisticsRecordedFragment.java

@@ -29,15 +29,13 @@ import android.widget.TextView;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.constraintlayout.widget.Group;
 import androidx.fragment.app.Fragment;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackRecordedActivity;
-import de.dennisguse.opentracks.content.TrackDataHub;
-import de.dennisguse.opentracks.content.TrackDataListener;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
+import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StringUtils;
@@ -49,10 +47,13 @@ import de.dennisguse.opentracks.util.TrackIconUtils;
  * @author Sandor Dornbush
  * @author Rodrigo Damazio
  */
-public class StatisticsRecordedFragment extends Fragment implements TrackDataListener {
+public class StatisticsRecordedFragment extends Fragment {
 
-    private TrackStatistics trackStatistics = null;
+    private static final String TRACK_ID_KEY = "trackId";
+
+    private TrackStatistics trackStatistics;
     private String category = "";
+    private Track track;
 
     private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
         if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
@@ -71,7 +72,6 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
         return inflater.inflate(R.layout.statistics_recorded, container, false);
     }
 
-    /* Views */
     private TextView totalTimeValueView;
     private TextView distanceValue;
     private TextView distanceUnit;
@@ -88,6 +88,28 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
     private TextView speedMovingValue;
     private TextView speedMovingUnit;
 
+    private Group elevationGroup;
+    private TextView elevationTotalGainValue;
+    private TextView elevationTotalGainUnit;
+
+    public static StatisticsRecordedFragment newInstance(Track.Id trackId) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(TRACK_ID_KEY, trackId);
+
+        StatisticsRecordedFragment fragment = new StatisticsRecordedFragment();
+        fragment.setArguments(bundle);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        Track.Id trackId = getArguments().getParcelable(TRACK_ID_KEY);
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(getContext());
+        track = contentProviderUtils.getTrack(trackId);
+    }
+
     @Override
     public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
@@ -113,6 +135,10 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
         speedMovingLabel = view.findViewById(R.id.stats_moving_speed_label);
         speedMovingValue = view.findViewById(R.id.stats_moving_speed_value);
         speedMovingUnit = view.findViewById(R.id.stats_moving_speed_unit);
+
+        elevationGroup = view.findViewById(R.id.stats_elevation_group);
+        elevationTotalGainValue = view.findViewById(R.id.stats_elevation_gain_value);
+        elevationTotalGainUnit = view.findViewById(R.id.stats_elevation_gain_unit);
     }
 
     @Override
@@ -140,23 +166,15 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
         super.onResume();
         PreferencesUtils.register(getContext(), sharedPreferenceChangeListener);
 
-        TrackDataHub trackDataHub = ((TrackRecordedActivity) getActivity()).getTrackDataHub();
-        trackDataHub.registerTrackDataListener(this, true, false, true, true);
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-        PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);
-
-        TrackDataHub trackDataHub = ((TrackRecordedActivity) getActivity()).getTrackDataHub();
-        trackDataHub.unregisterTrackDataListener(this);
+        loadStatistics();
     }
 
     @Override
     public void onDestroyView() {
         super.onDestroyView();
 
+        PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);
+
         totalTimeValueView = null;
 
         distanceValue = null;
@@ -178,10 +196,13 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
         speedMovingLabel = null;
         speedMovingValue = null;
         speedMovingUnit = null;
+
+        elevationGroup = null;
+        elevationTotalGainValue = null;
+        elevationTotalGainUnit = null;
     }
 
-    @Override
-    public void onTrackUpdated(final Track track) {
+    public void loadStatistics() {
         if (isResumed()) {
             getActivity().runOnUiThread(() -> {
                 if (isResumed()) {
@@ -193,41 +214,6 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
         }
     }
 
-    @Override
-    public void clearTrackPoints() {
-        // We don't care.
-    }
-
-    @Override
-    public void onSampledInTrackPoint(TrackPoint trackPoint) {
-        // We don't care.
-    }
-
-    @Override
-    public void onSampledOutTrackPoint(TrackPoint trackPoint) {
-        // We don't care.
-    }
-
-    @Override
-    public void onNewTrackPointsDone() {
-        // We don't care.
-    }
-
-    @Override
-    public void clearWaypoints() {
-        // We don't care.
-    }
-
-    @Override
-    public void onNewWaypoint(Waypoint wpt) {
-        // We don't care.
-    }
-
-    @Override
-    public void onNewWaypointsDone() {
-        // We don't care.
-    }
-
     private void updateUI() {
         String trackIconValue = TrackIconUtils.getIconValue(getContext(), category);
 
@@ -291,5 +277,18 @@ public class StatisticsRecordedFragment extends Fragment implements TrackDataLis
             speedMovingValue.setText(parts.first);
             speedMovingUnit.setText(parts.second);
         }
+
+        // Set elevation gain
+        {
+            // Make elevation visible?
+            boolean showElevation = PreferencesUtils.isShowStatsElevation(getContext());
+            elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
+
+            Float elevationGain_m = trackStatistics != null ? trackStatistics.getTotalElevationGain() : null;
+
+            Pair<String, String> parts = StringUtils.formatElevation(getContext(), elevationGain_m, metricUnits);
+            elevationTotalGainValue.setText(parts.first);
+            elevationTotalGainUnit.setText(parts.second);
+        }
     }
 }

src/main/java/de/dennisguse/opentracks/fragments/StatisticsRecordingFragment.java

@@ -22,9 +22,9 @@ import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackRecordingActivity;
 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.TrackDataListener;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.sensor.SensorDataCycling;
 import de.dennisguse.opentracks.content.sensor.SensorDataHeartRate;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
@@ -55,13 +55,17 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
 
     private TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
 
-    private TrackPoint lastTrackPoint = null;
-    private TrackStatistics lastTrackStatistics = null;
+    private TrackPoint lastTrackPoint;
+    private TrackStatistics lastTrackStatistics;
 
     private String category = "";
     @Deprecated //TODO This should be handled somewhere else; not in the UI.
     private int recordingGpsAccuracy;
 
+    public static Fragment newInstance() {
+        return new StatisticsRecordingFragment();
+    }
+
     private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
@@ -128,12 +132,14 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
     private TextView speedMovingLabel;
     private TextView speedMovingValue;
     private TextView speedMovingUnit;
-    private Group elevationGroup;
     private TextView speedLabel;
     private TextView speedValue;
     private TextView speedUnit;
-    private TextView elevationValue;
-    private TextView elevationUnit;
+    private Group elevationGroup;
+    private TextView elevationCurrentValue;
+    private TextView elevationCurrentUnit;
+    private TextView elevationTotalGainValue;
+    private TextView elevationTotalGainUnit;
     private Group coordinateGroup;
     private TextView latitudeValue;
     private TextView longitudeValue;
@@ -174,14 +180,16 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         speedMovingValue = view.findViewById(R.id.stats_moving_speed_value);
         speedMovingUnit = view.findViewById(R.id.stats_moving_speed_unit);
 
-        elevationGroup = view.findViewById(R.id.stats_elevation_current_group);
-
         speedLabel = view.findViewById(R.id.stats_speed_label);
         speedValue = view.findViewById(R.id.stats_speed_value);
         speedUnit = view.findViewById(R.id.stats_speed_unit);
 
-        elevationValue = view.findViewById(R.id.stats_elevation_current_value);
-        elevationUnit = view.findViewById(R.id.stats_elevation_current_unit);
+        elevationGroup = view.findViewById(R.id.stats_elevation_group);
+        elevationCurrentValue = view.findViewById(R.id.stats_elevation_current_value);
+        elevationCurrentUnit = view.findViewById(R.id.stats_elevation_current_unit);
+
+        elevationTotalGainValue = view.findViewById(R.id.stats_elevation_gain_value);
+        elevationTotalGainUnit = view.findViewById(R.id.stats_elevation_gain_unit);
 
         coordinateGroup = view.findViewById(R.id.stats_coordinate_group);
 
@@ -272,14 +280,16 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         speedMovingValue = null;
         speedMovingUnit = null;
 
-        elevationGroup = null;
-
         speedLabel = null;
         speedValue = null;
         speedUnit = null;
 
-        elevationValue = null;
-        elevationUnit = null;
+        elevationGroup = null;
+        elevationCurrentValue = null;
+        elevationCurrentUnit = null;
+
+        elevationTotalGainValue = null;
+        elevationTotalGainUnit = null;
 
         coordinateGroup = null;
 
@@ -346,17 +356,17 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
     }
 
     @Override
-    public void clearWaypoints() {
+    public void clearMarkers() {
         // We don't care.
     }
 
     @Override
-    public void onNewWaypoint(Waypoint wpt) {
+    public void onNewMarker(Marker marker) {
         // We don't care.
     }
 
     @Override
-    public void onNewWaypointsDone() {
+    public void onNewMarkersDone() {
         // We don't care.
     }
 
@@ -402,20 +412,25 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
 
     /**
      * Tries to fetch most recent {@link SensorDataSet} from {@link de.dennisguse.opentracks.services.TrackRecordingService}.
+     * Also sets elevation gain.
      */
     private void updateSensorDataUI() {
         TrackRecordingServiceInterface trackRecordingService = trackRecordingServiceConnection.getServiceIfBound();
 
         SensorDataSet sensorDataSet = null;
+        Float elevationGain_m = null;
         if (trackRecordingService == null) {
             Log.d(TAG, "Cannot get the track recording service.");
         } else {
             sensorDataSet = trackRecordingService.getSensorData();
+            elevationGain_m = trackRecordingService.getElevationGain_m();
         }
 
         setHeartRateSensorData(sensorDataSet);
         setCadenceSensorData(sensorDataSet);
         setSpeedSensorData(sensorDataSet, isSelectedTrackRecording());
+
+        setTotalElevationGain(elevationGain_m);
     }
 
     private void setHeartRateSensorData(SensorDataSet sensorDataSet) {
@@ -464,6 +479,26 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         cadenceValueView.setText(sensorValue);
     }
 
+    // Set elevation gain
+    private void setTotalElevationGain(Float elevationGain_m) {
+        //TODO Check if we can distribute the total elevation gain via trackStatistics instead of doing some computation in the UI layer.
+        boolean metricUnits = PreferencesUtils.isMetricUnits(getContext());
+
+        Float totalElevationGain = elevationGain_m;
+
+        if (lastTrackStatistics != null && lastTrackStatistics.hasTotalElevationGain()) {
+            if (elevationGain_m == null) {
+                totalElevationGain = lastTrackStatistics.getTotalElevationGain();
+            } else {
+                totalElevationGain += lastTrackStatistics.getTotalElevationGain();
+            }
+        }
+
+        Pair<String, String> parts = StringUtils.formatElevation(getContext(), totalElevationGain, metricUnits);
+        elevationTotalGainValue.setText(parts.first);
+        elevationTotalGainUnit.setText(parts.second);
+    }
+
     /**
      * If cadence and hear rate groups are invisible then sensor horizontal line hast to be invisible too.
      */
@@ -471,7 +506,6 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         if (cadenceGroup.getVisibility() != View.VISIBLE && heartRateGroup.getVisibility() != View.VISIBLE) {
             sensorHorizontalLine.setVisibility(View.GONE);
         }
-
     }
 
     private void setSpeedSensorData(SensorDataSet sensorDataSet, boolean isRecording) {
@@ -551,8 +585,9 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
             speedMovingUnit.setText(parts.second);
         }
 
-        // Make elevation visible?
+        // Set elevation (gain)
         {
+            // Make elevation visible?
             boolean showElevation = PreferencesUtils.isShowStatsElevation(getContext());
             elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
         }
@@ -593,11 +628,11 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
 
         if (showElevation) {
-            double altitude = lastTrackPoint != null && lastTrackPoint.hasAltitude() ? lastTrackPoint.getAltitude() : Double.NaN;
+            // Current elevation
+            Float altitude = lastTrackPoint != null && lastTrackPoint.hasAltitude() ? (float) lastTrackPoint.getAltitude() : null;
             Pair<String, String> parts = StringUtils.formatElevation(getContext(), altitude, metricUnits);
-
-            elevationValue.setText(parts.first);
-            elevationUnit.setText(parts.second);
+            elevationCurrentValue.setText(parts.first);
+            elevationCurrentUnit.setText(parts.second);
         }
 
         // Set coordinate

src/main/java/de/dennisguse/opentracks/io/file/ExportFile.java

@@ -0,0 +1,21 @@
+package de.dennisguse.opentracks.io.file;
+
+import androidx.documentfile.provider.DocumentFile;
+
+import de.dennisguse.opentracks.content.data.Track;
+
+public class ExportFile {
+
+    public static DocumentFile getExportDocumentFile(Track.Id trackId, String trackFileFormatExtension, DocumentFile directory, String mimeType) {
+        String fileName = getExportFileNameByTrackId(trackId, trackFileFormatExtension);
+        DocumentFile file = directory.findFile(fileName);
+        if (file == null) {
+            file = directory.createFile(mimeType, fileName);
+        }
+        return file;
+    }
+
+    private static String getExportFileNameByTrackId(Track.Id trackId, String trackFileFormatExtension) {
+        return trackId.getId() + "." + trackFileFormatExtension;
+    }
+}

src/main/java/de/dennisguse/opentracks/io/file/exporter/FileTrackExporter.java

@@ -23,9 +23,9 @@ import androidx.annotation.NonNull;
 
 import java.io.OutputStream;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.TrackPointIterator;
 import de.dennisguse.opentracks.util.LocationUtils;
@@ -98,7 +98,7 @@ public class FileTrackExporter implements TrackExporter {
          *  I am leaving the number of waypoints very high which should not be a problem, because we don't try to load them into objects all at the same time.
          */
         boolean hasWaypoints = false;
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(track.getId(), null, ContentProviderUtils.MAX_LOADED_WAYPOINTS_POINTS)) {
+        try (Cursor cursor = contentProviderUtils.getMarkerCursor(track.getId(), null, ContentProviderUtils.MAX_LOADED_MARKERS)) {
             if (cursor != null && cursor.moveToFirst()) {
                 for (int i = 0; i < cursor.getCount(); i++) {
                     if (Thread.interrupted()) {
@@ -108,7 +108,7 @@ public class FileTrackExporter implements TrackExporter {
                         trackWriter.writeBeginWaypoints(track);
                         hasWaypoints = true;
                     }
-                    Waypoint waypoint = contentProviderUtils.createWaypoint(cursor);
+                    Marker waypoint = contentProviderUtils.createMarker(cursor);
                     trackWriter.writeWaypoint(waypoint);
 
                     cursor.moveToNext();

src/main/java/de/dennisguse/opentracks/io/file/exporter/GpxTrackWriter.java

@@ -23,9 +23,9 @@ import java.io.PrintWriter;
 import java.text.NumberFormat;
 import java.util.Locale;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.util.StringUtils;
 
 /**
@@ -130,7 +130,7 @@ public class GpxTrackWriter implements TrackWriter {
     }
 
     @Override
-    public void writeWaypoint(Waypoint waypoint) {
+    public void writeWaypoint(Marker waypoint) {
         if (printWriter != null) {
             Location location = waypoint.getLocation();
             printWriter.println("<wpt " + formatLocation(location) + ">");

src/main/java/de/dennisguse/opentracks/io/file/exporter/KmlTrackWriter.java

@@ -26,9 +26,9 @@ import java.util.List;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.DescriptionGenerator;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.StringUtils;
@@ -50,6 +50,7 @@ public class KmlTrackWriter implements TrackWriter {
     public static final String EXTENDED_DATA_TYPE_CADENCE = "cadence";
     public static final String EXTENDED_DATA_TYPE_HEART_RATE = "heart_rate";
     public static final String EXTENDED_DATA_TYPE_POWER = "power";
+    public static final String EXTENDED_DATA_TYPE_ELEVATION_GAIN = "elevation_gain";
 
     private static final String WAYPOINT_ICON = "http://maps.google.com/mapfiles/kml/pushpin/blue-pushpin.png";
     private static final String START_ICON = "http://maps.google.com/mapfiles/kml/paddle/grn-circle.png";
@@ -68,6 +69,7 @@ public class KmlTrackWriter implements TrackWriter {
     private final List<Float> powerList = new ArrayList<>();
     private final List<Float> cadenceList = new ArrayList<>();
     private final List<Float> heartRateList = new ArrayList<>();
+    private final List<Float> elevationGainList = new ArrayList<>();
 
     private TrackPoint startTrackPoint;
 
@@ -163,7 +165,7 @@ public class KmlTrackWriter implements TrackWriter {
     }
 
     @Override
-    public void writeWaypoint(Waypoint waypoint) {
+    public void writeWaypoint(Marker waypoint) {
         if (printWriter != null && exportTrackDetail) {
             boolean existsPhoto = FileUtils.getPhotoFileIfExists(context, waypoint.getTrackId(), waypoint.getPhotoURI()) != null;
             if (waypoint.hasPhoto() && exportPhotos && existsPhoto) {
@@ -257,6 +259,9 @@ public class KmlTrackWriter implements TrackWriter {
                 if (heartRateList.size() > 0) {
                     writeSimpleArrayData(heartRateList, EXTENDED_DATA_TYPE_HEART_RATE);
                 }
+                if (elevationGainList.size() > 0) {
+                    writeSimpleArrayData(elevationGainList, EXTENDED_DATA_TYPE_ELEVATION_GAIN);
+                }
             }
             printWriter.println("</SchemaData>");
             printWriter.println("</ExtendedData>");
@@ -287,6 +292,9 @@ public class KmlTrackWriter implements TrackWriter {
                 if (trackPoint.hasPower()) {
                     powerList.add(trackPoint.getPower());
                 }
+                if (trackPoint.hasElevationGain()) {
+                    elevationGainList.add(trackPoint.getElevationGain());
+                }
             }
         }
     }
@@ -335,7 +343,7 @@ public class KmlTrackWriter implements TrackWriter {
      * @param waypoint Waypoint object.
      * @param heading  the heading.
      */
-    private void writePhotoOverlay(Waypoint waypoint, float heading) {
+    private void writePhotoOverlay(Marker waypoint, float heading) {
         if (exportTrackDetail) {
             printWriter.println("<PhotoOverlay>");
             printWriter.println("<name>" + StringUtils.formatCData(waypoint.getName()) + "</name>");

src/main/java/de/dennisguse/opentracks/io/file/exporter/KmzTrackExporter.java

@@ -31,8 +31,8 @@ import java.io.OutputStream;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.FileUtils;
 
@@ -76,10 +76,7 @@ public class KmzTrackExporter implements TrackExporter {
 
     @Override
     public boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream) {
-        ZipOutputStream zipOutputStream = null;
-        try {
-            zipOutputStream = new ZipOutputStream(outputStream);
-
+        try (ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream)) {
             // Add kml file
             ZipEntry zipEntry = new ZipEntry(KMZ_KML_FILE);
             zipOutputStream.putNextEntry(zipEntry);
@@ -97,26 +94,18 @@ public class KmzTrackExporter implements TrackExporter {
         } catch (InterruptedException | IOException e) {
             Log.e(TAG, "Unable to write track", e);
             return false;
-        } finally {
-            if (zipOutputStream != null) {
-                try {
-                    zipOutputStream.close();
-                } catch (IOException e) {
-                    Log.e(TAG, "Unable to close zip input stream", e);
-                }
-            }
         }
     }
 
     private void addImages(Context context, Track[] tracks, ZipOutputStream zipOutputStream) throws InterruptedException, IOException {
         for (Track track : tracks) {
-            try (Cursor cursor = contentProviderUtils.getWaypointCursor(track.getId(), null, -1)) {
+            try (Cursor cursor = contentProviderUtils.getMarkerCursor(track.getId(), null, -1)) {
                 if (cursor != null && cursor.moveToFirst()) {
                     for (int i = 0; i < cursor.getCount(); i++) {
                         if (Thread.interrupted()) {
                             throw new InterruptedException();
                         }
-                        Waypoint waypoint = contentProviderUtils.createWaypoint(cursor);
+                        Marker waypoint = contentProviderUtils.createMarker(cursor);
                         if (waypoint.hasPhoto()) {
                             Uri uriPhoto = waypoint.getPhotoURI();
                             boolean existsPhoto = FileUtils.getPhotoFileIfExists(context, track.getId(), uriPhoto) != null;
@@ -132,7 +121,7 @@ public class KmzTrackExporter implements TrackExporter {
         }
     }
 
-    private void addImage(Context context, ZipOutputStream zipOutputStream, Uri uri, Waypoint waypoint) throws IOException {
+    private void addImage(Context context, ZipOutputStream zipOutputStream, Uri uri, Marker waypoint) throws IOException {
         try (InputStream inputStream = context.getContentResolver().openInputStream(uri)) {
             ZipEntry zipEntry = new ZipEntry(buildKmzImageFilePath(waypoint));
             zipOutputStream.putNextEntry(zipEntry);
@@ -161,9 +150,9 @@ public class KmzTrackExporter implements TrackExporter {
      *
      * @param waypoint Waypoint object.
      */
-    public static String buildKmzImageFilePath(Waypoint waypoint) {
+    public static String buildKmzImageFilePath(Marker waypoint) {
         String ext = FileUtils.getExtension(waypoint.getPhotoUrl());
         ext = ext == null ? "" : "." + ext;
-        return KMZ_IMAGES_DIR + File.separatorChar + FileUtils.sanitizeFileName(waypoint.getId() + ext);
+        return KMZ_IMAGES_DIR + File.separatorChar + FileUtils.sanitizeFileName(waypoint.getId().getId() + ext);
     }
 }

src/main/java/de/dennisguse/opentracks/io/file/exporter/TrackWriter.java

@@ -17,9 +17,9 @@ package de.dennisguse.opentracks.io.file.exporter;
 
 import java.io.OutputStream;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 
 /**
  * Interface for writing tracks to a file. The expected sequence of calls is:
@@ -30,7 +30,7 @@ import de.dennisguse.opentracks.content.data.Waypoint;
  * For each track:
  *     {@link #writeBeginWaypoints(Track)}
  *     For each waypoint:
- *         {@link #writeWaypoint(Waypoint)}
+ *         {@link #writeWaypoint(Marker)}
  *     {@link #writeEndWaypoints()}
  * {@link #writeMultiTrackBegin()}
  * For each track:
@@ -91,7 +91,7 @@ public interface TrackWriter {
      *
      * @param waypoint the waypoint
      */
-    void writeWaypoint(Waypoint waypoint);
+    void writeWaypoint(Marker waypoint);
 
     /**
      * Writes the beginning of the tracks.

src/main/java/de/dennisguse/opentracks/io/file/importer/AbstractFileTrackImporter.java

@@ -39,9 +39,9 @@ import javax.xml.parsers.SAXParser;
 import javax.xml.parsers.SAXParserFactory;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.TrackPointIterator;
 import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
@@ -70,7 +70,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
 
     private Track.Id importTrackId;
     private final List<Track.Id> trackIds = new ArrayList<>();
-    private final List<Waypoint> waypoints = new ArrayList<>();
+    private final List<Marker> waypoints = new ArrayList<>();
 
     // The current element content
     //TODO Should be made private and getter be used by child classes.
@@ -160,7 +160,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
         }
 
         int waypointPosition = -1;
-        Waypoint waypoint = null;
+        Marker waypoint = null;
         TrackPoint trackPoint = null;
         TrackStatisticsUpdater trackStatisticsUpdater = new TrackStatisticsUpdater(track.getTrackStatistics().getStartTime_ms());
         // TODO Should not be necessary anymore?
@@ -209,8 +209,8 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
                         long duration = trackStatisticsUpdater.getTrackStatistics().getTotalTime();
 
                         // Insert waypoint
-                        Waypoint newWaypoint = new Waypoint(waypoint.getName(), waypointDescription, waypoint.getCategory(), icon, track.getId(), length, duration, trackPoint.getLocation(), waypoint.getPhotoUrl());
-                        contentProviderUtils.insertWaypoint(newWaypoint);
+                        Marker newWaypoint = new Marker(waypoint.getName(), waypointDescription, waypoint.getCategory(), icon, track.getId(), length, duration, trackPoint.getLocation(), waypoint.getPhotoUrl());
+                        contentProviderUtils.insertMarker(newWaypoint);
                     }
 
                     // Load the next waypoint
@@ -231,7 +231,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
             trackId = new Track.Id(Long.parseLong(uri.getLastPathSegment()));
         } else {
             if (trackIds.size() > 0) {
-                throw new SAXException(createErrorMessage("Cannot import more than one track to an existing track " + importTrackId));
+                throw new SAXException(createErrorMessage("Cannot import more than one track to an existing track " + importTrackId.getId()));
             }
             trackId = importTrackId;
             contentProviderUtils.clearTrack(trackId);
@@ -314,7 +314,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
         if (!LocationUtils.isValidLocation(trackPoint.getLocation())) {
             throw new SAXException(createErrorMessage("Invalid location detected: " + trackPoint));
         }
-        Waypoint waypoint = new Waypoint(trackPoint.getLocation());
+        Marker waypoint = new Marker(trackPoint.getLocation());
 
         if (name != null) {
             waypoint.setName(name);

src/main/java/de/dennisguse/opentracks/io/file/importer/KmlFileTrackImporter.java

@@ -63,11 +63,12 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
 
     private boolean trackStarted = false;
     private String extendedDataType;
-    private ArrayList<TrackPoint> trackPoints;
-    private ArrayList<Float> speedList;
-    private ArrayList<Float> cadenceList;
-    private ArrayList<Float> heartRateList;
-    private ArrayList<Float> powerList;
+    private ArrayList<TrackPoint> trackPoints = new ArrayList<>();
+    private ArrayList<Float> speedList = new ArrayList<>();
+    private ArrayList<Float> cadenceList = new ArrayList<>();
+    private ArrayList<Float> heartRateList = new ArrayList<>();
+    private ArrayList<Float> powerList = new ArrayList<>();
+    private ArrayList<Float> elevationGainList = new ArrayList<>();
 
     public KmlFileTrackImporter(Context context) {
         this(context, new ContentProviderUtils(context));
@@ -223,11 +224,12 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
     @Override
     protected void onTrackSegmentStart() {
         super.onTrackSegmentStart();
-        trackPoints = new ArrayList<>();
-        speedList = new ArrayList<>();
-        heartRateList = new ArrayList<>();
-        cadenceList = new ArrayList<>();
-        powerList = new ArrayList<>();
+        trackPoints.clear();
+        speedList.clear();
+        heartRateList.clear();
+        cadenceList.clear();
+        powerList.clear();
+        elevationGainList.clear();
     }
 
     /**
@@ -250,6 +252,9 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
             if (i < powerList.size()) {
                 trackPoint.setPower(powerList.get(i));
             }
+            if (i < elevationGainList.size()) {
+                trackPoint.setElevationGain(elevationGainList.get(i));
+            }
 
             insertTrackPoint(trackPoint);
         }
@@ -316,6 +321,9 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
             case KmlTrackWriter.EXTENDED_DATA_TYPE_CADENCE:
                 cadenceList.add(value);
                 break;
+            case KmlTrackWriter.EXTENDED_DATA_TYPE_ELEVATION_GAIN:
+                elevationGainList.add(value);
+                break;
             default:
                 Log.w(TAG, "Data from extended data " + extendedDataType + " is not (yet) supported.");
         }

src/main/java/de/dennisguse/opentracks/io/file/importer/KmzTrackImporter.java

@@ -32,8 +32,8 @@ import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipInputStream;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.io.file.exporter.KmzTrackExporter;
 import de.dennisguse.opentracks.util.FileUtils;
@@ -200,9 +200,9 @@ public class KmzTrackImporter implements TrackImporter {
         if (!trackId.isValid()) {
             // 1.- Gets all photo names in the waypoints of the track identified by id.
             ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
-            List<Waypoint> waypoints = contentProviderUtils.getWaypoints(trackId);
+            List<Marker> waypoints = contentProviderUtils.getMarkers(trackId);
             List<String> photosName = new ArrayList<>();
-            for (Waypoint w : waypoints) {
+            for (Marker w : waypoints) {
                 if (w.hasPhoto()) {
                     String photoUrl = Uri.decode(w.getPhotoUrl());
                     photosName.add(photoUrl.substring(photoUrl.lastIndexOf(File.separatorChar) + 1));

src/main/java/de/dennisguse/opentracks/services/TrackRecordingService.java

@@ -39,9 +39,9 @@ import java.util.List;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackListActivity;
 import de.dennisguse.opentracks.TrackRecordingActivity;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.CustomContentProvider;
 import de.dennisguse.opentracks.content.provider.TrackPointIterator;
@@ -49,6 +49,7 @@ import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.services.handlers.GpsStatusValue;
 import de.dennisguse.opentracks.services.handlers.HandlerServer;
 import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
+import de.dennisguse.opentracks.services.sensors.ElevationSumManager;
 import de.dennisguse.opentracks.services.tasks.AnnouncementPeriodicTaskFactory;
 import de.dennisguse.opentracks.services.tasks.PeriodicTaskExecutor;
 import de.dennisguse.opentracks.stats.TrackStatistics;
@@ -115,6 +116,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
     // The following variables are set when recording:
     private WakeLock wakeLock;
     private BluetoothRemoteSensorManager remoteSensorManager;
+    private ElevationSumManager elevationSumManager;
 
     private TrackStatisticsUpdater trackStatisticsUpdater;
     private TrackPoint lastTrackPoint;
@@ -174,6 +176,11 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
             remoteSensorManager = null;
         }
 
+        if (elevationSumManager != null) {
+            elevationSumManager.stop(this);
+            elevationSumManager = null;
+        }
+
         // Reverse order from onCreate
         showNotification(false); //TODO Why?
 
@@ -215,6 +222,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         return trackStatisticsUpdater.getTrackStatistics();
     }
 
+    //TODO Throw exception, when not recording.
     public long getTotalTime() {
         if (trackStatisticsUpdater == null) {
             return 0;
@@ -225,27 +233,22 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         return trackStatisticsUpdater.getTrackStatistics().getTotalTime();
     }
 
-    /**
-     * Inserts a waypoint.
-     *
-     * @return the waypoint id
-     */
-    public Waypoint.Id insertWaypoint(String name, String category, String description, String photoUrl) {
+    public Marker.Id insertMarker(String name, String category, String description, String photoUrl) {
         if (!isRecording() || isPaused()) {
             return null;
         }
 
         if (name == null) {
-            int nextWaypointNumber = contentProviderUtils.getNextWaypointNumber(recordingTrackId);
-            if (nextWaypointNumber == -1) {
-                nextWaypointNumber = 1;
+            int nextMarkerNumber = contentProviderUtils.getNextMarkerNumber(recordingTrackId);
+            if (nextMarkerNumber == -1) {
+                nextMarkerNumber = 1;
             }
-            name = getString(R.string.marker_name_format, nextWaypointNumber + 1);
+            name = getString(R.string.marker_name_format, nextMarkerNumber + 1);
         }
 
         TrackPoint trackPoint = getLastValidTrackPointInCurrentSegment(recordingTrackId);
         if (trackPoint == null) {
-            Log.i(TAG, "Could not create a waypoint as trackPoint is unknown.");
+            Log.i(TAG, "Could not create a marker as trackPoint is unknown.");
             return null;
         }
 
@@ -258,10 +261,10 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         double length = stats.getTotalDistance();
         long duration = stats.getTotalTime();
 
-        // Insert waypoint
-        Waypoint waypoint = new Waypoint(name, description, category, icon, recordingTrackId, length, duration, trackPoint.getLocation(), photoUrl);
-        Uri uri = contentProviderUtils.insertWaypoint(waypoint);
-        return new Waypoint.Id(ContentUris.parseId(uri));
+        // Insert marker
+        Marker marker = new Marker(name, description, category, icon, recordingTrackId, length, duration, trackPoint.getLocation(), photoUrl);
+        Uri uri = contentProviderUtils.insertMarker(marker);
+        return new Marker.Id(ContentUris.parseId(uri));
     }
 
     /**
@@ -308,7 +311,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
     void resumeTrack(Track.Id trackId) {
         Track track = contentProviderUtils.getTrack(trackId);
         if (track == null) {
-            Log.e(TAG, "Ignore resumeTrack. Track " + trackId + " does not exists.");
+            Log.e(TAG, "Ignore resumeTrack. Track " + trackId.getId() + " does not exists.");
             return;
         }
 
@@ -332,7 +335,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         Track track = contentProviderUtils.getTrack(recordingTrackId);
         if (track == null) {
             if (isRecording()) {
-                Log.w(TAG, "track is null, but recordingTrackId not -1L. " + recordingTrackId);
+                Log.w(TAG, "track is null, but recordingTrackId not -1L. " + recordingTrackId.getId());
                 updateRecordingState(null, true);
             }
             showNotification(false);
@@ -375,6 +378,10 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         // Update instance variables
         remoteSensorManager = new BluetoothRemoteSensorManager(this);
         remoteSensorManager.start();
+
+        elevationSumManager = new ElevationSumManager();
+        elevationSumManager.start(this);
+
         lastTrackPoint = null;
         isIdle = false;
 
@@ -460,6 +467,11 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
             remoteSensorManager.stop();
             remoteSensorManager = null;
         }
+        if (elevationSumManager != null) {
+            elevationSumManager.stop(this);
+            elevationSumManager = null;
+        }
+
         lastTrackPoint = null;
 
         handlerServer.stop(this);
@@ -560,15 +572,17 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
             insertTrackPoint(track, TrackPoint.createPause());
 
             insertTrackPoint(track, trackPoint);
-            isIdle = false;
 
+            isIdle = false;
             lastTrackPoint = trackPoint;
             return;
         }
 
         if (trackPoint.hasSensorData() || distanceToLastTrackLocation >= recordingDistanceInterval) {
             insertTrackPointIfNewer(track, lastTrackPoint);
+
             insertTrackPoint(track, trackPoint);
+
             isIdle = false;
 
             lastTrackPoint = trackPoint;
@@ -577,7 +591,9 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
 
         if (!isIdle && !TrackPointUtils.isMoving(trackPoint)) {
             insertTrackPointIfNewer(track, lastTrackPoint);
+
             insertTrackPoint(track, trackPoint);
+
             isIdle = true;
 
             lastTrackPoint = trackPoint;
@@ -586,7 +602,9 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
 
         if (isIdle && TrackPointUtils.isMoving(trackPoint)) {
             insertTrackPointIfNewer(track, lastTrackPoint);
+
             insertTrackPoint(track, trackPoint);
+
             isIdle = false;
 
             lastTrackPoint = trackPoint;
@@ -636,6 +654,10 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
      */
     private void insertTrackPoint(@NonNull Track track, @NonNull TrackPoint trackPoint) {
         try {
+            if (elevationSumManager != null) {
+                trackPoint.setElevationGain(elevationSumManager.getElevationGain_m());
+                elevationSumManager.reset();
+            }
             contentProviderUtils.insertTrackPoint(trackPoint, track.getId());
             trackStatisticsUpdater.addTrackPoint(trackPoint, recordingDistanceInterval);
             updateTrackTotalTime(track);
@@ -676,6 +698,17 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
         }
     }
 
+    /**
+     * Returns the relative elevation gain (since last trackpoint).
+     */
+    Float getElevationGain_m() {
+        if (elevationSumManager == null || !elevationSumManager.isConnected()) {
+            return null;
+        }
+
+        return elevationSumManager.getElevationGain_m();
+    }
+
     private void showNotification(boolean isGpsStarted) {
         if (isRecording()) {
             Intent intent = IntentUtils.newIntent(this, TrackRecordingActivity.class)

src/main/java/de/dennisguse/opentracks/services/TrackRecordingServiceBinder.java

@@ -2,9 +2,9 @@ package de.dennisguse.opentracks.services;
 
 import androidx.annotation.VisibleForTesting;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.services.handlers.GpsStatusValue;
 import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
@@ -90,8 +90,8 @@ class TrackRecordingServiceBinder extends android.os.Binder implements TrackReco
     }
 
     @Override
-    public Waypoint.Id insertWaypoint(String name, String category, String description, String photoUrl) {
-        return trackRecordingService.insertWaypoint(name, category, description, photoUrl);
+    public Marker.Id insertMarker(String name, String category, String description, String photoUrl) {
+        return trackRecordingService.insertMarker(name, category, description, photoUrl);
     }
 
     @Override
@@ -99,6 +99,11 @@ class TrackRecordingServiceBinder extends android.os.Binder implements TrackReco
         return trackRecordingService.getSensorDataSet();
     }
 
+    @Override
+    public Float getElevationGain_m() {
+        return trackRecordingService.getElevationGain_m();
+    }
+
     @VisibleForTesting
     @Override
     public void setRemoteSensorManager(BluetoothRemoteSensorManager remoteSensorManager) {

src/main/java/de/dennisguse/opentracks/services/TrackRecordingServiceConnection.java

@@ -31,8 +31,8 @@ import androidx.annotation.NonNull;
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackEditActivity;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
@@ -181,16 +181,16 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
      *
      * @return the id of the marker or null if none could be created.
      */
-    public Waypoint.Id addMarker(Context context, String name, String category, String description, String photoUrl) {
+    public Marker.Id addMarker(Context context, String name, String category, String description, String photoUrl) {
         TrackRecordingServiceInterface trackRecordingService = getServiceIfBound();
         if (trackRecordingService == null) {
             Log.d(TAG, "Unable to add marker, no track recording service");
         } else {
             try {
-                Waypoint.Id waypoint = trackRecordingService.insertWaypoint(name, category, description, photoUrl);
-                if (waypoint != null) {
+                Marker.Id marker = trackRecordingService.insertMarker(name, category, description, photoUrl);
+                if (marker != null) {
                     Toast.makeText(context, R.string.marker_add_success, Toast.LENGTH_SHORT).show();
-                    return waypoint;
+                    return marker;
                 }
             } catch (IllegalStateException e) {
                 Log.e(TAG, "Unable to add marker.", e);
@@ -201,12 +201,6 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
         return null;
     }
 
-    /**
-     * Stops the recording.
-     *
-     * @param context    the context
-     * @param showEditor true to show the editor
-     */
     public void stopRecording(@NonNull Context context, boolean showEditor) {
         TrackRecordingServiceInterface trackRecordingService = getServiceIfBound();
         if (trackRecordingService == null) {

src/main/java/de/dennisguse/opentracks/services/TrackRecordingServiceInterface.java

@@ -17,9 +17,9 @@ package de.dennisguse.opentracks.services;
 
 import androidx.annotation.VisibleForTesting;
 
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.services.handlers.GpsStatusValue;
 import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
@@ -30,46 +30,20 @@ import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
  */
 public interface TrackRecordingServiceInterface {
 
-    /**
-     * Starts gps.
-     */
     void startGps();
 
-    /**
-     * Stops gps.
-     */
     void stopGps();
 
-    /**
-     * Starts recording a new track.
-     *
-     * @return the track ID of the new track.
-     */
     Track.Id startNewTrack();
 
-    /**
-     * Resumes the track identified by trackId.
-     */
-    void resumeTrack(Track.Id trackId);
-
-    /**
-     * Pauses the current recording track.
-     */
     void pauseCurrentTrack();
 
-    /**
-     * Resumes the current recording track.
-     */
     void resumeCurrentTrack();
 
-    /**
-     * Ends the current recording track.
-     */
+    void resumeTrack(Track.Id trackId);
+
     void endCurrentTrack();
 
-    /**
-     * Returns true if currently recording a track.
-     */
     boolean isRecording();
 
     /**
@@ -88,20 +62,22 @@ public interface TrackRecordingServiceInterface {
     //TODO milliseconds?
     long getTotalTime();
 
-    /**
-     * Inserts a waypoint in the current recording track.
-     *
-     * @return the ID of the inserted waypoint
-     */
-    Waypoint.Id insertWaypoint(String name, String category, String description, String photoUrl);
+    Marker.Id insertMarker(String name, String category, String description, String photoUrl);
 
     /**
-     * Gets the current sensor data. Returns null if there is no data.
+     * Gets the current sensor data.
      *
-     * @return SensorDataSet object.
+     * @return SensorDataSet object or null.
      */
     SensorDataSet getSensorData();
 
+    /**
+     * Gets the current elevation gain.
+     *
+     * @return elevation gain in m or null.
+     */
+    Float getElevationGain_m();
+
     @VisibleForTesting
     void setRemoteSensorManager(BluetoothRemoteSensorManager remoteSensorManager);
 

src/main/java/de/dennisguse/opentracks/services/handlers/LocationHandler.java

@@ -42,8 +42,8 @@ class LocationHandler implements HandlerServer.Handler, LocationListener, GpsSta
 
     @Override
     public void onStop(Context context) {
-        locationManager = null;
         unregisterLocationListener();
+        locationManager = null;
         if (gpsStatus != null) {
             gpsStatus.stop();
             gpsStatus = null;

src/main/java/de/dennisguse/opentracks/services/sensors/ElevationSumManager.java

@@ -0,0 +1,117 @@
+package de.dennisguse.opentracks.services.sensors;
+
+import android.content.Context;
+import android.hardware.Sensor;
+import android.hardware.SensorEvent;
+import android.hardware.SensorEventListener;
+import android.hardware.SensorManager;
+import android.util.Log;
+
+import androidx.annotation.Nullable;
+import androidx.annotation.VisibleForTesting;
+
+import de.dennisguse.opentracks.util.PressureSensorUtils;
+import de.dennisguse.opentracks.util.UnitConversions;
+
+/**
+ * Estimates the elevation gain and elevation loss using the device's pressure sensor (i.e., barometer).
+ */
+public class ElevationSumManager implements SensorEventListener {
+
+    private static final String TAG = ElevationSumManager.class.getSimpleName();
+
+    private static final int SAMPLING_RATE = 3 * (int) UnitConversions.ONE_SECOND_US;
+
+    private boolean isConnected = false;
+
+    private float lastAcceptedPressureValue_hPa;
+
+    private float lastSeenSensorValue_hPa;
+
+    private float elevationGain_m;
+    private float elevationLoss_m;
+
+    public void start(Context context) {
+        SensorManager sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
+
+        Sensor pressureSensor = sensorManager.getDefaultSensor(Sensor.TYPE_PRESSURE);
+        if (pressureSensor == null) {
+            Log.w(TAG, "No pressure sensor available.");
+            isConnected = false;
+        } else {
+            isConnected = sensorManager.registerListener(this, pressureSensor, SAMPLING_RATE);
+        }
+
+        lastAcceptedPressureValue_hPa = Float.NaN;
+        reset();
+    }
+
+    public void stop(Context context) {
+        Log.d(TAG, "Stop");
+
+        SensorManager sensorManager = (SensorManager) context.getSystemService(Context.SENSOR_SERVICE);
+        sensorManager.unregisterListener(this);
+
+        isConnected = false;
+        reset();
+    }
+
+    public boolean isConnected() {
+        return isConnected;
+    }
+
+    @VisibleForTesting
+    public void setConnected(boolean isConnected) {
+        this.isConnected = isConnected;
+    }
+
+    public @Nullable
+    Float getElevationGain_m() {
+        return isConnected ? elevationGain_m : null;
+    }
+
+    public @Nullable
+    Float getElevationLoss_m() {
+        return isConnected ? elevationLoss_m : null;
+    }
+
+    public void reset() {
+        Log.d(TAG, "Reset");
+        elevationGain_m = 0;
+        elevationLoss_m = 0;
+    }
+
+    @Override
+    public void onAccuracyChanged(Sensor sensor, int accuracy) {
+        Log.w(TAG, "Sensor accuracy changes are (currently) ignored.");
+    }
+
+    @Override
+    public void onSensorChanged(SensorEvent event) {
+        if (!isConnected) {
+            Log.w(TAG, "Not connected to sensor, cannot process data.");
+            return;
+        }
+        onSensorValueChanged(event.values[0]);
+    }
+
+    @VisibleForTesting
+    void onSensorValueChanged(float value_hPa) {
+        if (Float.isNaN(lastAcceptedPressureValue_hPa)) {
+            lastAcceptedPressureValue_hPa = value_hPa;
+            lastSeenSensorValue_hPa = value_hPa;
+            return;
+        }
+
+        PressureSensorUtils.ElevationChange elevationChange = PressureSensorUtils.computeChangesWithSmoothing_m(lastAcceptedPressureValue_hPa, lastSeenSensorValue_hPa, value_hPa);
+        if (elevationChange != null) {
+            elevationGain_m += elevationChange.getElevationGain_m();
+            elevationLoss_m += elevationChange.getElevationLoss_m();
+            lastAcceptedPressureValue_hPa = elevationChange.getCurrentSensorValue_hPa();
+        }
+
+        lastSeenSensorValue_hPa = value_hPa;
+
+        Log.v(TAG, "elevation gain: " + elevationGain_m);
+    }
+}

src/main/java/de/dennisguse/opentracks/services/tasks/AnnouncementPeriodicTask.java

@@ -22,14 +22,18 @@ import android.speech.tts.TextToSpeech;
 import android.speech.tts.UtteranceProgressListener;
 import android.util.Log;
 
+import java.util.List;
 import java.util.Locale;
 
 import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.services.TrackRecordingService;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.AnnouncementUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.UnitConversions;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
 
 /**
  * This class will periodically announce the user's {@link TrackStatistics}.
@@ -159,9 +163,17 @@ public class AnnouncementPeriodicTask implements PeriodicTask {
             Log.i(TAG, "Speech is not allowed at this time.");
             return;
         }
+
         Track track = contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context));
         String category = track != null ? track.getCategory() : "";
-        String announcement = AnnouncementUtils.getAnnouncement(context, trackStatistics, category);
+
+        List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(track.getId());
+        IntervalStatistics intervalStatistics = new IntervalStatistics();
+        intervalStatistics.build(trackPoints, (float) (PreferencesUtils.isMetricUnits(context) ? 1 * UnitConversions.KM_TO_M : 1 * UnitConversions.MI_TO_M));
+        int numIntervals = intervalStatistics.getIntervalList().size();
+        IntervalStatistics.Interval lastInterval = numIntervals > 0 ? intervalStatistics.getIntervalList().get(numIntervals - 1) : null;
+
+        String announcement = AnnouncementUtils.getAnnouncement(context, trackStatistics, category, lastInterval);
         speakAnnouncement(announcement);
     }
 

src/main/java/de/dennisguse/opentracks/settings/bluetooth/BluetoothLeSensorPreference.java

@@ -8,6 +8,8 @@ import android.bluetooth.le.ScanResult;
 import android.bluetooth.le.ScanSettings;
 import android.content.Context;
 import android.content.DialogInterface;
+import android.graphics.drawable.Animatable;
+import android.graphics.drawable.Drawable;
 import android.os.Bundle;
 import android.os.ParcelUuid;
 import android.text.TextUtils;
@@ -16,6 +18,7 @@ import android.util.Log;
 import android.widget.Toast;
 
 import androidx.appcompat.app.AlertDialog;
+import androidx.core.content.ContextCompat;
 import androidx.preference.DialogPreference;
 import androidx.preference.PreferenceDialogFragmentCompat;
 
@@ -189,7 +192,11 @@ public abstract class BluetoothLeSensorPreference extends DialogPreference {
                         BluetoothLeSensorPreferenceDialog.this.onClick(dialog, DialogInterface.BUTTON_POSITIVE);
                         dialog.dismiss();
                     });
-            builder.setIcon(R.drawable.ic_bluetooth_searching_24dp);
+
+            Drawable icon = ContextCompat.getDrawable(getContext(), R.drawable.ic_bluetooth_searching_animated_24dp);
+            ((Animatable) icon).start();
+            builder.setIcon(icon);
+
             builder.setPositiveButton(null, null);
         }
 

src/main/java/de/dennisguse/opentracks/stats/DoubleRingBuffer.java

@@ -19,13 +19,13 @@ package de.dennisguse.opentracks.stats;
 import androidx.annotation.NonNull;
 
 /**
- * This class maintains a buffer of doubles.
+ * This class maintains a ring buffer of doubles.
  * This buffer is a convenient class for storing a series of doubles and calculating information about them.
  * This is a FIFO buffer.
  *
  * @author Sandor Dornbush
  */
-class DoubleBuffer {
+class DoubleRingBuffer {
 
     // The sliding buffer of doubles.
     private final double[] buffer;
@@ -41,7 +41,7 @@ class DoubleBuffer {
      *
      * @param size the size
      */
-    DoubleBuffer(int size) {
+    DoubleRingBuffer(int size) {
         if (size < 1) {
             throw new IllegalArgumentException("The buffer size must be greater than 1.");
         }

src/main/java/de/dennisguse/opentracks/stats/TrackStatistics.java

@@ -17,6 +17,7 @@
 package de.dennisguse.opentracks.stats;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 
 /**
  * Statistical data about a {@link de.dennisguse.opentracks.content.data.Track}.
@@ -24,6 +25,7 @@ import androidx.annotation.NonNull;
  *
  * @author Rodrigo Damazio
  */
+//TODO Use null instead of Double.isInfinite
 public class TrackStatistics {
 
     // The min and max elevation (meters) seen on this track.
@@ -42,7 +44,7 @@ public class TrackStatistics {
     // The maximum speed (meters/second) that we believe is valid.
     private double maxSpeed_mps;
     // The total elevation gained (meters).
-    private double totalElevationGain_m;
+    private Float totalElevationGain_m = null;
 
     public TrackStatistics() {
     }
@@ -80,7 +82,15 @@ public class TrackStatistics {
             elevationExtremities.update(other.elevationExtremities.getMin());
             elevationExtremities.update(other.elevationExtremities.getMax());
         }
-        totalElevationGain_m += other.totalElevationGain_m;
+        if (totalElevationGain_m == null) {
+            if (other.totalElevationGain_m != null) {
+                totalElevationGain_m = other.totalElevationGain_m;
+            }
+        } else {
+            if (other.totalElevationGain_m != null) {
+                totalElevationGain_m += other.totalElevationGain_m;
+            }
+        }
     }
 
     /**
@@ -227,18 +237,23 @@ public class TrackStatistics {
         elevationExtremities.update(elevation_m);
     }
 
-    /**
-     * Gets the total elevation gain in meters. This is calculated as the sum of all positive differences in the smoothed elevation.
-     */
-    public double getTotalElevationGain() {
+    public boolean hasTotalElevationGain() {
+        return totalElevationGain_m != null;
+    }
+
+    public @Nullable
+    Float getTotalElevationGain() {
         return totalElevationGain_m;
     }
 
-    public void setTotalElevationGain(double totalElevationGain_m) {
+    public void setTotalElevationGain(float totalElevationGain_m) {
         this.totalElevationGain_m = totalElevationGain_m;
     }
 
-    public void addTotalElevationGain(double gain_m) {
+    public void addTotalElevationGain(float gain_m) {
+        if (totalElevationGain_m == null) {
+            totalElevationGain_m = 0f;
+        }
         totalElevationGain_m += gain_m;
     }
 

src/main/java/de/dennisguse/opentracks/stats/TrackStatisticsUpdater.java

@@ -62,9 +62,9 @@ public class TrackStatisticsUpdater {
     private final TrackStatistics trackStatistics;
 
     // A buffer of the recent elevation readings (m)
-    private final DoubleBuffer elevationBuffer_m = new DoubleBuffer(ELEVATION_SMOOTHING_FACTOR);
+    private final DoubleRingBuffer elevationBuffer_m = new DoubleRingBuffer(ELEVATION_SMOOTHING_FACTOR);
     // A buffer of the recent speed readings (m/s) for calculating max speed
-    private final DoubleBuffer speedBuffer_ms = new DoubleBuffer(SPEED_SMOOTHING_FACTOR);
+    private final DoubleRingBuffer speedBuffer_ms = new DoubleRingBuffer(SPEED_SMOOTHING_FACTOR);
 
     // The current segment's statistics
     private TrackStatistics currentSegment;
@@ -112,7 +112,7 @@ public class TrackStatisticsUpdater {
      * Adds a trackPoint.
      * TODO: This assume trackPoint has a valid time.
      *
-     * @param trackPoint             the trackPoint
+     * @param trackPoint           the trackPoint
      * @param minRecordingDistance the min recording distance
      */
     public void addTrackPoint(TrackPoint trackPoint, int minRecordingDistance) {
@@ -134,8 +134,16 @@ public class TrackStatisticsUpdater {
             return;
         }
 
-        //TODO Use Barometer to compute elevation gain.
-        double elevationDifference = trackPoint.hasAltitude() ? updateElevation(trackPoint.getAltitude()) : 0.0;
+        //Update absolute (GPS-based) elevation
+        if (trackPoint.hasAltitude()) {
+            updateAbsoluteElevation(trackPoint.getAltitude());
+        }
+
+        //Get elevation gain
+        if (trackPoint.hasElevationGain()) {
+            currentSegment.addTotalElevationGain(trackPoint.getElevationGain());
+            Log.d(TAG, "elevation gain: " + trackPoint.getElevationGain());
+        }
 
         if (lastTrackPoint == null || lastMovingTrackPoint == null) {
             lastTrackPoint = trackPoint;
@@ -207,23 +215,21 @@ public class TrackStatisticsUpdater {
     }
 
     /**
-     * Updates an elevation reading. Returns the difference.
+     * Updates an elevation reading.
      *
      * @param elevation the elevation
+     * @return the difference
      */
     @VisibleForTesting
-    private double updateElevation(double elevation) {
+    private double updateAbsoluteElevation(double elevation) {
         // Update elevation using the smoothed average
         double oldAverage = elevationBuffer_m.getAverage();
         elevationBuffer_m.setNext(elevation);
         double newAverage = elevationBuffer_m.getAverage();
 
         currentSegment.updateElevationExtremities(newAverage);
-        double difference = newAverage - oldAverage;
-        if (difference > 0) {
-            currentSegment.addTotalElevationGain(difference);
-        }
-        return difference;
+
+        return newAverage - oldAverage;
     }
 
     private TrackStatistics init(long time) {

src/main/java/de/dennisguse/opentracks/util/AnnouncementUtils.java

@@ -2,18 +2,22 @@ package de.dennisguse.opentracks.util;
 
 import android.content.Context;
 
+import androidx.annotation.Nullable;
+
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
 
 public class AnnouncementUtils {
 
     private AnnouncementUtils() {}
 
-    public static String getAnnouncement(Context context, TrackStatistics trackStatistics, String category) {
+    public static String getAnnouncement(Context context, TrackStatistics trackStatistics, String category, @Nullable IntervalStatistics.Interval currentInterval) {
         boolean metricUnits = PreferencesUtils.isMetricUnits(context);
         boolean reportSpeed = PreferencesUtils.isReportSpeed(context, category);
         double distance = trackStatistics.getTotalDistance() * UnitConversions.M_TO_KM;
         double distancePerTime = trackStatistics.getAverageMovingSpeed() * UnitConversions.MPS_TO_KMH;
+        double currentDistancePerTime = currentInterval != null ? currentInterval.getSpeed_ms() * UnitConversions.MPS_TO_KMH : 0;
 
         if (distance == 0) {
             return context.getString(R.string.voice_total_distance_zero);
@@ -22,23 +26,36 @@ public class AnnouncementUtils {
         if (!metricUnits) {
             distance *= UnitConversions.KM_TO_MI;
             distancePerTime *= UnitConversions.KM_TO_MI;
+            currentDistancePerTime *= UnitConversions.KM_TO_MI;
         }
 
         String rate;
+        String currentRate;
+        String currentRateMsg = "";
         if (reportSpeed) {
             int speedId = metricUnits ? R.plurals.voiceSpeedKilometersPerHour : R.plurals.voiceSpeedMilesPerHour;
             rate = context.getResources().getQuantityString(speedId, getQuantityCount(distancePerTime), distancePerTime);
+
+            currentRate = context.getResources().getQuantityString(speedId, getQuantityCount(currentDistancePerTime), currentDistancePerTime);
+            currentRateMsg = context.getString(R.string.voice_speed_lap, currentRate);
         } else {
             double timePerDistance = distancePerTime == 0 ? 0.0 : 1 / distancePerTime;
             int paceId = metricUnits ? R.string.voice_pace_per_kilometer : R.string.voice_pace_per_mile;
             long time = Math.round(timePerDistance * UnitConversions.HR_TO_MIN * UnitConversions.MIN_TO_S * UnitConversions.S_TO_MS);
             rate = context.getString(paceId, getAnnounceTime(context, time));
+
+            double currentTimePerDistance = currentDistancePerTime == 0 ? 0.0 : 1 / currentDistancePerTime;
+            long currentTime = Math.round(currentTimePerDistance * UnitConversions.HR_TO_MIN * UnitConversions.MIN_TO_S * UnitConversions.S_TO_MS);
+            currentRate = context.getString(paceId, getAnnounceTime(context, currentTime));
+            currentRateMsg = context.getString(R.string.voice_pace_lap, currentRate);
         }
 
         int totalDistanceId = metricUnits ? R.plurals.voiceTotalDistanceKilometers : R.plurals.voiceTotalDistanceMiles;
         String totalDistance = context.getResources().getQuantityString(totalDistanceId, getQuantityCount(distance), distance);
 
-        return context.getString(R.string.voice_template, totalDistance, getAnnounceTime(context, trackStatistics.getMovingTime()), rate);
+        currentRateMsg = currentInterval == null ? "" : " " + currentRateMsg;
+
+        return context.getString(R.string.voice_template, totalDistance, getAnnounceTime(context, trackStatistics.getMovingTime()), rate) + currentRateMsg;
     }
 
     private static String getAnnounceTime(Context context, long time) {

src/main/java/de/dennisguse/opentracks/util/IntentDashboardUtils.java

@@ -11,10 +11,10 @@ import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Set;
 
+import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 
 /**
@@ -55,7 +55,7 @@ public class IntentDashboardUtils {
         ArrayList<Uri> uris = new ArrayList<>();
         uris.add(TRACK_URI_INDEX, Uri.withAppendedPath(TracksColumns.CONTENT_URI, trackIdList));
         uris.add(TRACKPOINTS_URI_INDEX, Uri.withAppendedPath(TrackPointsColumns.CONTENT_URI_BY_TRACKID, trackIdList));
-        uris.add(WAYPOINTS_URI_INDEX, Uri.withAppendedPath(WaypointsColumns.CONTENT_URI_BY_TRACKID, trackIdList));
+        uris.add(WAYPOINTS_URI_INDEX, Uri.withAppendedPath(MarkerColumns.CONTENT_URI_BY_TRACKID, trackIdList));
 
         Intent intent = new Intent(ACTION_DASHBOARD);
         intent.putParcelableArrayListExtra(ACTION_DASHBOARD_PAYLOAD, uris);

src/main/java/de/dennisguse/opentracks/util/IntentUtils.java

@@ -32,8 +32,8 @@ import java.util.Date;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.DescriptionGenerator;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.ShareContentProvider;
 
@@ -87,7 +87,7 @@ public class IntentUtils {
         for (Track.Id trackId : trackIds) {
             Track track = contentProviderUtils.getTrack(trackId);
             if (track == null) {
-                Log.e(TAG, "TrackId " + trackId + " could not be resolved.");
+                Log.e(TAG, "TrackId " + trackId.getId() + " could not be resolved.");
                 continue;
             }
 
@@ -128,7 +128,7 @@ public class IntentUtils {
                 .putExtra(Intent.EXTRA_TEXT, context.getString(R.string.share_image_body));
     }
 
-    public static void showCoordinateOnMap(Context context, Waypoint waypoint) {
+    public static void showCoordinateOnMap(Context context, Marker waypoint) {
         showCoordinateOnMap(context, waypoint.getLocation().getLatitude(), waypoint.getLocation().getLongitude(), waypoint.getName());
     }
 

src/main/java/de/dennisguse/opentracks/util/LocationUtils.java

@@ -41,6 +41,7 @@ public class LocationUtils {
      * @return true if the location is a valid location.
      */
     //TODO Move to TrackPoint
+    @Deprecated //See #316
     public static boolean isValidLocation(Location location) {
         return location != null
                 && Math.abs(location.getLatitude()) <= 90

src/main/java/de/dennisguse/opentracks/util/PreferencesUtils.java

@@ -162,6 +162,7 @@ public class PreferencesUtils {
      * @param keyId   the key id
      * @param value   the value
      */
+    @VisibleForTesting
     public static void setLong(Context context, int keyId, long value) {
         SharedPreferences sharedPreferences = getSharedPreferences(context);
         Editor editor = sharedPreferences.edit();

src/main/java/de/dennisguse/opentracks/util/PressureSensorUtils.java

@@ -0,0 +1,83 @@
+package de.dennisguse.opentracks.util;
+
+import android.hardware.SensorManager;
+
+public class PressureSensorUtils {
+
+    //Everything above is considered a meaningful change in elevation.
+    private static float ELEVATION_CHANGE_DIFF_M = 3.0f;
+
+    private static float EXPONENTIAL_SMOOTHING = 0.3f;
+
+    private PressureSensorUtils() {
+    }
+
+    public static class ElevationChange {
+
+        private float currentSensorValue_hPa;
+
+        private float elevationChange_m;
+
+        public ElevationChange(float currentSensorValue_hPa, float elevationChange_m) {
+            this.currentSensorValue_hPa = currentSensorValue_hPa;
+            this.elevationChange_m = elevationChange_m;
+        }
+
+        public float getCurrentSensorValue_hPa() {
+            return currentSensorValue_hPa;
+        }
+
+        public float getElevationChange_m() {
+            return elevationChange_m;
+        }
+
+        public float getElevationGain_m() {
+            return elevationChange_m > 0 ? elevationChange_m : 0;
+        }
+
+        public float getElevationLoss_m() {
+            return elevationChange_m < 0 ? elevationChange_m : 0;
+        }
+    }
+
+    /**
+     * Applies exponential smoothing to sensor value before computation.
+     */
+    public static ElevationChange computeChangesWithSmoothing_m(float lastAcceptedSensorValue_hPa, float lastSeenSensorValue_hPa, float currentSensorValue_hPa) {
+        float nextSensorValue_hPa = EXPONENTIAL_SMOOTHING * currentSensorValue_hPa + (1 - EXPONENTIAL_SMOOTHING) * lastSeenSensorValue_hPa;
+
+        return computeChanges_m(lastAcceptedSensorValue_hPa, nextSensorValue_hPa);
+    }
+
+    /**
+     * Computes the elevation gain and elevation loss.
+     *
+     * @return null if no meaningful elevation change occurred.
+     */
+    public static ElevationChange computeChanges_m(float lastAcceptedSensorValue_hPa, float currentSensorValue_hPa) {
+        float lastSensorValue_m = SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastAcceptedSensorValue_hPa);
+        float currentSensorValue_m = SensorManager.getAltitude(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, currentSensorValue_hPa);
+
+        float elevationChange_m = currentSensorValue_m - lastSensorValue_m;
+        if (Math.abs(elevationChange_m) < ELEVATION_CHANGE_DIFF_M) {
+            return null;
+        }
+
+        // Limit elevation change by ELEVATION_CHANGE_DIFF and computes pressure value accordingly.
+        ElevationChange elevationChange = new ElevationChange(currentSensorValue_hPa, elevationChange_m);
+        if (elevationChange.getElevationGain_m() > 0) {
+            return new ElevationChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m + ELEVATION_CHANGE_DIFF_M), ELEVATION_CHANGE_DIFF_M);
+        } else {
+            return new ElevationChange(getBarometricPressure(SensorManager.PRESSURE_STANDARD_ATMOSPHERE, lastSensorValue_m - ELEVATION_CHANGE_DIFF_M), -1 * ELEVATION_CHANGE_DIFF_M);
+        }
+    }
+
+    /*
+     * Barometeric pressure to elevation estimation; inverts of SensorManager.getAltitude(float, float)
+     * https://de.wikipedia.org/wiki/Barometrische_H%C3%B6henformel#Internationale_H%C3%B6henformel
+     * {\color{White} p(h)} = p_0 \cdot \left( 1 - \frac{0{,}0065 \frac{\mathrm K}{\mathrm m} \cdot h}{T_0\ } \right)^{5{,}255}
+     */
+    private static float getBarometricPressure(float p0, float altitude_m) {
+        return (float) (p0 * Math.pow(1.0 - 0.0065 * altitude_m / 288.15, 5.255f));
+    }
+}

src/main/java/de/dennisguse/opentracks/util/StringUtils.java

@@ -22,6 +22,7 @@ import android.text.format.DateUtils;
 import android.util.Log;
 import android.util.Pair;
 
+import java.math.RoundingMode;
 import java.text.DecimalFormat;
 import java.time.Instant;
 import java.time.LocalDateTime;
@@ -125,12 +126,10 @@ public class StringUtils {
      * Format a decimal number while removing trailing zeros of the decimal part (if present).
      */
     public static String formatDecimal(double value, int decimalPlaces) {
-        if (decimalPlaces < 1) {
-            return Long.toString(Math.round(value));
-        }
-
-        String format = "#." + new String(new char[decimalPlaces]).replace("\0", "#");
-        return new DecimalFormat(format).format(value);
+        DecimalFormat df = new DecimalFormat();
+        df.setMaximumFractionDigits(decimalPlaces);
+        df.setRoundingMode(RoundingMode.HALF_EVEN);
+        return df.format(value);
     }
 
     /**
@@ -204,7 +203,7 @@ public class StringUtils {
         }
 
         if (reportSpeed) {
-            return new Pair<>(StringUtils.formatDecimal(speed * UnitConversions.S_TO_HR), unitString);
+            return new Pair<>(StringUtils.formatDecimal(speed * UnitConversions.S_TO_HR, 1), unitString);
         }
 
         int pace = speed == 0 ? 0 : (int) Math.round(1 / speed); //sec / [KM | MI]
@@ -324,21 +323,21 @@ public class StringUtils {
     }
 
     /**
-     * Sets an elevation value.
+     * Sets an elevation_m value.
      *
      * @param context     the context
-     * @param elevation   the elevation in meters
+     * @param elevation_m the elevation_m
      * @param metricUnits true if metric units
-     * @return the formatted elevation (or null) and it's unit as {@link Pair}
+     * @return the formatted elevation_m (or null) and it's unit as {@link Pair}
      */
-    public static Pair<String, String> formatElevation(Context context, double elevation, boolean metricUnits) {
+    public static Pair<String, String> formatElevation(Context context, Float elevation_m, boolean metricUnits) {
         String value = context.getString(R.string.value_unknown);
         String unit = context.getString(metricUnits ? R.string.unit_meter : R.string.unit_feet);
-        if (!Double.isNaN(elevation) && !Double.isInfinite(elevation)) {
+        if (elevation_m != null) {
             if (!metricUnits) {
-                elevation *= UnitConversions.M_TO_FT;
+                elevation_m *= (float) UnitConversions.M_TO_FT;
             }
-            value = StringUtils.formatDecimal(elevation, 0);
+            value = StringUtils.formatDecimal(elevation_m, 0);
         }
         return new Pair<>(value, unit);
     }

src/main/java/de/dennisguse/opentracks/util/UnitConversions.java

@@ -26,7 +26,8 @@ public class UnitConversions {
     public static final long S_TO_MS = 1000;
 
     // Time
-    // 1 second in milliseconds
+    // TODO Use int instead of long.
+    public static final long ONE_SECOND_US = UnitConversions.S_TO_MS * 1000;
     public static final long ONE_SECOND_MS = UnitConversions.S_TO_MS;
     public static final long ONE_MINUTE_MS = (long) (UnitConversions.MIN_TO_S * UnitConversions.S_TO_MS);
     public static final long ONE_HOUR_MS = 60 * ONE_MINUTE_MS;
@@ -65,6 +66,10 @@ public class UnitConversions {
     public static final double M_TO_FT = M_TO_MI * MI_TO_FT;
     // multiplication factor to convert meters per second to kilometers per hour
     public static final double MPS_TO_KMH = M_TO_KM / (S_TO_MIN * MIN_TO_HR);
+    // multiplication factor to convert miles to km
+    public static final double MI_TO_KM = 1 / KM_TO_MI;
+    // multiplication factor to convert miles to m
+    public static final double MI_TO_M = MI_TO_KM * KM_TO_M;
 
     private UnitConversions() {
     }