Release v3.9.4

We were sending the trackId as intent extra (actually unused) and this trackId could not be unparceled.
Fixes #411.

.github/FUNDING.yml

@@ -1,4 +1,4 @@
 # These are supported funding model platforms
 
-liberapay: dennis.guse
+liberapay: OpenTracks
 custom: https://play.google.com/store/apps/details?id=de.dennisguse.opentracks.playstore

.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.
 
@@ -7,4 +15,7 @@ A clear and concise description of what the pull request changes/adds.
 (If available): The link to the issue that this pull request solves.
 
 **License agreement**
-By opening this pull request, you are providing your contribution under the _Apache License 2.0_ (see [LICENSE.md](LICENSE.md)).
+By opening this pull request, you are providing your contribution under the _Apache License 2.0_ (see [LICENSE.md](LICENSE.md)).
+
+**Note: new dependencies/libraries**
+Please refrain from introducing new libraries without consulting the team.

.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"

.github/workflows/codeql-analysis.yml

@@ -0,0 +1,34 @@
+name: "CodeQL"
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+  schedule:
+    - cron: '0 6 * * 1'
+
+jobs:
+  analyse:
+    name: Analyse
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 2
+
+    - run: git checkout HEAD^2
+      if: ${{ github.event_name == 'pull_request' }}
+
+    - name: Initialize CodeQL
+      uses: github/codeql-action/init@v1
+      with:
+        languages: java
+
+    - run: |
+       ./gradlew build
+
+    - name: Perform CodeQL Analysis
+      uses: github/codeql-action/analyze@v1

.gitignore

@@ -66,6 +66,9 @@ captures/
 .idea/sqlDataSources.xml
 .idea/vcs.xml
 .idea/uiDesigner.xml
+.idea/jarRepositories.xml
+.idea/markdown-navigator-enh.xml
+.idea/markdown-navigator.xml
 
 # Keystore files
 *.jks
@@ -76,4 +79,4 @@ captures/
 # Fastlane
 Appfile
 releasePlayStore/*
-Gemfile.lock
+Gemfile.lock

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. 

README.md

@@ -21,7 +21,7 @@ _OpenTracks_ is a sport tracking application that completely respects your priva
             </a>
         </td>
         <td>
-            <a href="https://liberapay.com/dennis.guse/donate">
+            <a href="https://liberapay.com/OpenTracks/donate">
                 <img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg" height="45" align="middle">
             </a>
         </td>

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.0'
+        classpath 'com.android.tools.build:gradle:4.0.1'
     }
 }
 
@@ -37,6 +37,8 @@ def getVersionName = { ->
 
 android {
     compileOptions {
+        coreLibraryDesugaringEnabled true
+
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
@@ -45,13 +47,8 @@ android {
 
     defaultConfig {
         applicationId "de.dennisguse.opentracks"
-        manifestPlaceholders = [
-                applicationLogo: "@mipmap/ic_launcher",
-                applicationName: "@string/app_name"
-        ]
-
-        versionCode 3466
-        versionName "v3.8.0"
+        versionCode 3573
+        versionName "v3.9.4"
 
         buildConfigField "String", "VERSION_NAME_FULL", "\"${getVersionName()}\""
 
@@ -67,10 +64,6 @@ android {
         debug {
             applicationIdSuffix ".debug"
             versionNameSuffix "-debug"
-            manifestPlaceholders = [
-                    applicationLogo: "@mipmap/ic_launcher_debug",
-                    applicationName: "OpenTracks (Debug)"
-            ]
         }
 
         release {
@@ -89,20 +82,17 @@ android {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.1.0'
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.0.10'
+
+    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:1.1.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.google.android.material:material:1.2.1'
+    implementation 'com.android.support.constraint:constraint-layout:2.0.1'
 
-    androidTestImplementation 'androidx.test:core:1.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-intents:3.2.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test:rules:1.2.0'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'org.mockito:mockito-android:3.0.0'
-
-    testImplementation 'androidx.test:core:1.2.0'
-    testImplementation 'org.mockito:mockito-core:3.0.0'
+    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:3.5.10'
 }

doc/data-exportimport.txt

@@ -0,0 +1,29 @@
+@startuml
+interface TrackExporter {
+}
+class KmzTrackExporter implements TrackExporter
+KmzTrackExporter o-- FileTrackExporter
+class FileTrackExporter implements TrackExporter {
+/' One track only '/
+}
+FileTrackExporter o-- TrackWriter
+
+interface TrackWriter {
+}
+class GpxTrackWriter implements TrackWriter
+class KmlTrackWriter implements TrackWriter
+
+
+interface TrackImporter {
+}
+class KmzTrackImporter implements TrackImporter {
+}
+KmzTrackImporter o-- KmlFileTrackImporter
+class AbstractFileTrackImporter implements TrackImporter {
+}
+class GpxFileTrackImporter extends AbstractFileTrackImporter {
+}
+class KmlFileTrackImporter extends AbstractFileTrackImporter {
+/' Supports multiple tracks via folders '/
+}
+@enduml

doc/opentracks-schema-1.0.xsd

@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
+    targetNamespace="http://opentracksapp.com/xmlschemas/v1">
+
+    <xs:element name="trackuuid"
+        type="xs:string" />
+
+</xs:schema>

drawable-svg/ic_activity_climbing.svg

@@ -0,0 +1,474 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   sodipodi:docname="ic_activity_climbing.svg"
+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
+   id="svg8"
+   version="1.1"
+   viewBox="0 0 5.8208333 5.8208333"
+   height="22"
+   width="22">
+  <defs
+     id="defs2">
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+       chamfer_steps="1"
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+    <path
+       sodipodi:nodetypes="cccccccccccccc"
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+       id="path894-3" />
+  </g>
+</svg>

drawable-svg/ic_bluetooth_searching.svg

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns:dc="http://purl.org/dc/elements/1.1/"
+    xmlns:cc="http://creativecommons.org/ns#"
+    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+    xmlns="http://www.w3.org/2000/svg"
+    id="svg6"
+    version="1.1"
+    height="24px"
+    width="24px"
+    fill="black"
+    viewBox="0 0 24 24">
+    <metadata id="metadata12">
+        <rdf:RDF>
+            <cc:Work rdf:about="">
+                <dc:format>image/svg+xml</dc:format>
+                <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+            </cc:Work>
+        </rdf:RDF>
+    </metadata>
+    <path
+        id="dotSmall"
+        d="m 14.24,12.01 2.32,2.32 C 16.84,13.61 17,12.82 17,12 17,11.18 16.84,10.41 16.57,9.69 Z" />
+    <path
+        id="dotBig"
+        d="m 19.53,6.71 -1.26,1.26 c 0.63,1.21 0.98,2.57 0.98,4.02 0,1.45 -0.36,2.82 -0.98,4.02 l 1.2,1.2 C 20.44,15.67 21.01,13.85 21.01,11.9 21,10.01 20.46,8.23 19.53,6.71 Z" />
+    <path
+        d="M 12.88,16.29 11,18.17 V 14.41 Z M 11,5.83 12.88,7.71 11,9.59 Z M 15.71,7.71 10,2 H 9 V 9.59 L 4.41,5 3,6.41 8.59,12 3,17.59 4.41,19 9,14.41 V 22 h 1 L 15.71,16.29 11.41,12 Z"
+        id="path4" />
+</svg>

fastlane/metadata/android/en-US/changelogs/3474.txt

@@ -0,0 +1,8 @@
+v3.8.1: OpenTracks
+
+Changes:
+- While recording: add option for fullscreen
+- Dashboard is started on the same task
+
+Bugfixes:
+- Intent filters for importing files were far too optimistic

fastlane/metadata/android/en-US/changelogs/3522.txt

@@ -0,0 +1,14 @@
+v3.9.0: OpenTracks
+
+Changes:
+- Export tracks with their UUID
+- Prevent import of already existing tracks by UUID (configurable; default yes)
+- Pause/stop button now require long press
+- GPS pre-start shows status of fix
+- Added new activity icons
+- Speed sensor: wheelsize now configurable in millimeter
+
+Bugfixes:
+- Fixed some rare crashes (NPE)
+- Pace formatting corrected
+- App icon in launcher repositioned

fastlane/metadata/android/en-US/changelogs/3530.txt

@@ -0,0 +1,4 @@
+v3.9.1: OpenTracks
+
+Bugfixes:
+- GPS pre-start shows status of fix

fastlane/metadata/android/en-US/changelogs/3541.txt

@@ -0,0 +1,5 @@
+v3.9.2: OpenTracks
+
+Bugfixes:
+- Fixed force close on API<25 (due to an animation)
+- Reset recording state (on app startup) if crashed while recording

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

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}.
  *
@@ -67,7 +68,7 @@ public class DescriptionGeneratorTest {
         track.setTrackStatistics(stats);
         track.setCategory("hiking");
         String expected = //"Created by"
-                "<a href='https://github.com/OpenTracksApp/OpenTracks'>OpenTracks</a><p>"
+                "<a href='https://github.com/OpenTracksApp/OpenTracks'>OpenTracks (Debug)</a><p>"
                 + "Name: -<br>"
                 + "Activity type: hiking<br>"
                 + "Description: -<br>"
@@ -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
@@ -103,7 +104,7 @@ public class DescriptionGeneratorTest {
         track.setTrackStatistics(stats);
         track.setCategory("hiking");
         String expected = //"Created by"
-                "<a href='https://github.com/OpenTracksApp/OpenTracks'>OpenTracks</a><p>"
+                "<a href='https://github.com/OpenTracksApp/OpenTracks'>OpenTracks (Debug)</a><p>"
                         + "Name: -<br>"
                         + "Activity type: hiking<br>"
                         + "Description: -<br>"
@@ -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

@@ -17,18 +17,16 @@
 package de.dennisguse.opentracks.content;
 
 import android.content.ContentUris;
-import android.content.Context;
 import android.location.Location;
 import android.net.Uri;
 
-import androidx.test.core.app.ApplicationProvider;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
+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;
-import org.junit.runner.RunWith;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -39,8 +37,14 @@ import de.dennisguse.opentracks.content.SearchEngine.SearchQuery;
 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.
@@ -48,28 +52,32 @@ import de.dennisguse.opentracks.stats.TrackStatistics;
  *
  * @author Rodrigo Damazio
  */
-@RunWith(AndroidJUnit4.class)
 public class SearchEngineTest {
 
+    private static final String TAG = SearchEngineTest.class.getSimpleName();
+
     private static final Location HERE = new Location("gps");
-    private static final long NOW = SearchEngine.OLDEST_ALLOWED_TIMESTAMP + 1000;  // After OLDEST_ALLOWED_TIMESTAMP
+    private static final long NOW = SearchEngine.OLDEST_ALLOWED_TIMESTAMP + 1000;
+
+    @Rule
+    public ProviderTestRule sqliteContentProviderRule = new ProviderTestRule.Builder(CustomContentProvider.class, ContentProviderUtils.AUTHORITY_PACKAGE).setPrefix(TAG).build();
+
     private ContentProviderUtils providerUtils;
     private SearchEngine engine;
 
-    private final Context context = ApplicationProvider.getApplicationContext();
-
     @Before
     public void setUp() {
-        providerUtils = new ContentProviderUtils(context);
+        providerUtils = new ContentProviderUtils(sqliteContentProviderRule.getResolver());
+
         engine = new SearchEngine(providerUtils);
     }
 
     @After
     public void tearDown() {
-        providerUtils.deleteAllTracks(context);
+        InstrumentationRegistry.getInstrumentation().getTargetContext().deleteDatabase(TAG + CustomSQLiteOpenHelper.DATABASE_NAME);
     }
 
-    private long insertTrack(String title, String description, String category, long hoursAgo) {
+    private Track.Id insertTrack(String title, String description, String category, long hoursAgo) {
         Track track = new Track();
         track.setName(title);
         track.setDescription(description);
@@ -83,18 +91,18 @@ public class SearchEngineTest {
         }
 
         Uri uri = providerUtils.insertTrack(track);
-        return ContentUris.parseId(uri);
+        return new Track.Id(ContentUris.parseId(uri));
     }
 
-    private long insertTrack(String title, String description, String category) {
+    private Track.Id insertTrack(String title, String description, String category) {
         return insertTrack(title, description, category, -1);
     }
 
-    private long insertTrack(String title, long hoursAgo) {
+    private Track.Id insertTrack(String title, long hoursAgo) {
         return insertTrack(title, "", "", hoursAgo);
     }
 
-    private long insertWaypoint(String title, String description, String category, double distance, long hoursAgo, long trackId) {
+    private Waypoint.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);
@@ -108,22 +116,22 @@ public class SearchEngineTest {
         waypoint.setTrackId(trackId);
 
         Uri uri = providerUtils.insertWaypoint(waypoint);
-        return ContentUris.parseId(uri);
+        return new Waypoint.Id(ContentUris.parseId(uri));
     }
 
-    private long insertWaypoint(String title, String description, String category) {
-        return insertWaypoint(title, description, category, 0.0, -1, -1);
+    private Waypoint.Id insertWaypoint(String title, String description, String category) {
+        return insertWaypoint(title, description, category, 0.0, -1, null);
     }
 
-    private long insertWaypoint(String title, double distance) {
-        return insertWaypoint(title, "", "", distance, -1, -1);
+    private Waypoint.Id insertWaypoint(String title, double distance) {
+        return insertWaypoint(title, "", "", distance, -1, null);
     }
 
-    private long insertWaypoint(String title, long hoursAgo) {
-        return insertWaypoint(title, "", "", 0.0, hoursAgo, -1);
+    private Waypoint.Id insertWaypoint(String title, long hoursAgo) {
+        return insertWaypoint(title, "", "", 0.0, hoursAgo, null);
     }
 
-    private long insertWaypoint(String title, long hoursAgo, long trackId) {
+    private Waypoint.Id insertWaypoint(String title, long hoursAgo, Track.Id trackId) {
         return insertWaypoint(title, "", "", 0.0, hoursAgo, trackId);
     }
 
@@ -138,14 +146,14 @@ public class SearchEngineTest {
         // - one which will match in title and description
         // - one which will match in all fields
         insertTrack("bb", "cc", "dd");
-        long descriptionMatchId = insertTrack("bb", "aa", "cc");
-        long categoryMatchId = insertTrack("bb", "cc", "aa");
-        long titleMatchId = insertTrack("aa", "bb", "cc");
-        long titleCategoryMatchId = insertTrack("aa", "bb", "ca");
-        long titleDescriptionMatchId = insertTrack("aa", "ba", "cc");
-        long allMatchId = insertTrack("aa", "ba", "ca");
+        Track.Id descriptionMatchId = insertTrack("bb", "aa", "cc");
+        Track.Id categoryMatchId = insertTrack("bb", "cc", "aa");
+        Track.Id titleMatchId = insertTrack("aa", "bb", "cc");
+        Track.Id titleCategoryMatchId = insertTrack("aa", "bb", "ca");
+        Track.Id titleDescriptionMatchId = insertTrack("aa", "ba", "cc");
+        Track.Id allMatchId = insertTrack("aa", "ba", "ca");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
@@ -163,14 +171,14 @@ public class SearchEngineTest {
         // - one which will match in title and description
         // - one which will match in all fields
         insertWaypoint("bb", "cc", "dd");
-        long descriptionMatchId = insertWaypoint("bb", "aa", "cc");
-        long categoryMatchId = insertWaypoint("bb", "cc", "aa");
-        long titleMatchId = insertWaypoint("aa", "bb", "cc");
-        long titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
-        long titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
-        long allMatchId = insertWaypoint("aa", "ba", "ca");
+        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");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
@@ -185,17 +193,17 @@ public class SearchEngineTest {
         // - one waypoint which will match by title
         // - one track which won't match
         // - one track which will match by title
-        long descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
+        Waypoint.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
         insertWaypoint("bb", "cc", "dd");
-        long titleWaypointId = insertWaypoint("aa", "bb", "cc");
+        Waypoint.Id titleWaypointId = insertWaypoint("aa", "bb", "cc");
         insertTrack("bb", "cc", "dd");
-        long trackId = insertTrack("aa", "bb", "cc");
+        Track.Id trackId = insertTrack("aa", "bb", "cc");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         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));
@@ -204,11 +212,11 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointDistance() {
         // All results match text, but they're at difference distances from the user.
-        long farFarAwayId = insertWaypoint("aa", 0.3);
-        long nearId = insertWaypoint("ab", 0.1);
-        long farId = insertWaypoint("ac", 0.2);
+        Waypoint.Id farFarAwayId = insertWaypoint("aa", 0.3);
+        Waypoint.Id nearId = insertWaypoint("ab", 0.1);
+        Waypoint.Id farId = insertWaypoint("ac", 0.2);
 
-        SearchQuery query = new SearchQuery("a", HERE, -1, NOW);
+        SearchQuery query = new SearchQuery("a", HERE, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Distance order.
@@ -217,11 +225,11 @@ public class SearchEngineTest {
 
     public void testSearchTrackRecent() {
         // All results match text, but they're were recorded at different times.
-        long oldestId = insertTrack("aa", 3);
-        long recentId = insertTrack("ab", 1);
-        long oldId = insertTrack("ac", 2);
+        Track.Id oldestId = insertTrack("aa", 3);
+        Track.Id recentId = insertTrack("ab", 1);
+        Track.Id oldId = insertTrack("ac", 2);
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Reverse time order.
@@ -231,11 +239,11 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointRecent() {
         // All results match text, but they're were recorded at different times.
-        long oldestId = insertWaypoint("aa", 2);
-        long recentId = insertWaypoint("ab", 0);
-        long oldId = insertWaypoint("ac", 1);
+        Waypoint.Id oldestId = insertWaypoint("aa", 2);
+        Waypoint.Id recentId = insertWaypoint("ab", 0);
+        Waypoint.Id oldId = insertWaypoint("ac", 1);
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Reverse time order.
@@ -245,8 +253,8 @@ public class SearchEngineTest {
     @Test
     public void testSearchCurrentTrack() {
         // All results match text, but one of them is the current track.
-        long currentId = insertTrack("ab", 1);
-        long otherId = insertTrack("aa", 1);
+        Track.Id currentId = insertTrack("ab", 1);
+        Track.Id otherId = insertTrack("aa", 1);
 
         SearchQuery query = new SearchQuery("a", null, currentId, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -258,47 +266,57 @@ public class SearchEngineTest {
     @Test
     public void testSearchCurrentTrackWaypoint() {
         // All results match text, but one of them is in the current track.
-        long otherId = insertWaypoint("aa", 1, 456);
-        long currentId = insertWaypoint("ab", 1, 123);
+        Waypoint.Id otherId = insertWaypoint("aa", 1, new Track.Id(456));
+        Waypoint.Id currentId = insertWaypoint("ab", 1, new Track.Id(123));
 
-        SearchQuery query = new SearchQuery("a", null, 123, NOW);
+        SearchQuery query = new SearchQuery("a", null, new Track.Id(123), NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Waypoint in current track should be promoted.
         assertWaypointResults(results, currentId, otherId);
     }
 
-    private void assertTrackResult(long trackId, ScoredResult result) {
-        Assert.assertNotNull("Not a track", result.track);
-        Assert.assertNull("Ambiguous result", result.waypoint);
-        Assert.assertEquals(trackId, result.track.getId());
+    private void assertTrackResult(Track.Id trackId, ScoredResult result) {
+        assertNotNull("Not a track", result.track);
+        assertNull("Ambiguous result", result.waypoint);
+        assertEquals(trackId, result.track.getId());
     }
 
-    private void assertTrackResults(List<ScoredResult> results, long... trackIds) {
-        String errMsg = "Expected IDs=" + Arrays.toString(trackIds) + "; results=" + results;
-        Assert.assertEquals(results.size(), trackIds.length);
+    private void assertTrackResults(List<ScoredResult> results, Track.Id... trackIds) {
+        long[] longTrackIds = new long[trackIds.length];
+        for (int i = 0; i < trackIds.length; i++) {
+            longTrackIds[i] = trackIds[i].getId();
+        }
+
+        String errMsg = "Expected IDs=" + Arrays.toString(longTrackIds) + "; results=" + results;
+        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.waypoint);
+            assertEquals(errMsg, trackIds[i], result.track.getId());
         }
     }
 
-    private void assertWaypointResult(long 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(Waypoint.Id waypointId, ScoredResult result) {
+        assertNotNull("Not a waypoint", result.waypoint);
+        assertNull("Ambiguous result", result.track);
+        assertEquals(waypointId, result.waypoint.getId());
     }
 
-    private void assertWaypointResults(List<ScoredResult> results, long... waypointIds) {
-        String errMsg = "Expected IDs=" + Arrays.toString(waypointIds) + "; results=" + results;
-        Assert.assertEquals(results.size(), waypointIds.length);
+    private void assertWaypointResults(List<ScoredResult> results, Waypoint.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;
+        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.waypoint);
+            assertNull(errMsg, result.track);
+            assertEquals(errMsg, waypointIds[i], result.waypoint.getId());
         }
     }
 }

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

@@ -20,10 +20,10 @@ public class TestDataUtil {
     /**
      * Create a track without any trackPoints.
      */
-    public static Track createTrack(long trackId) {
+    public static Track createTrack(Track.Id trackId) {
         Track track = new Track();
         track.setId(trackId);
-        track.setName("Test: " + trackId);
+        track.setName("Test: " + trackId.getId());
 
         return track;
     }
@@ -34,7 +34,7 @@ public class TestDataUtil {
      * @param trackId   the trackId of the track
      * @param numPoints the trackPoints number in the track
      */
-    public static Pair<Track, TrackPoint[]> createTrack(long trackId, int numPoints) {
+    public static Pair<Track, TrackPoint[]> createTrack(Track.Id trackId, int numPoints) {
         Track track = createTrack(trackId);
 
         TrackPoint[] trackPoints = new TrackPoint[numPoints];
@@ -45,7 +45,7 @@ public class TestDataUtil {
         return new Pair<>(track, trackPoints);
     }
 
-    public static Track createTrackAndInsert(ContentProviderUtils contentProviderUtils, long trackId, int numPoints) {
+    public static Track createTrackAndInsert(ContentProviderUtils contentProviderUtils, Track.Id trackId, int numPoints) {
         Pair<Track, TrackPoint[]> pair = createTrack(trackId, numPoints);
 
         insertTrackWithLocations(contentProviderUtils, pair.first, pair.second);
@@ -93,12 +93,11 @@ public class TestDataUtil {
      * @param location The location.
      * @return the Waypoint created.
      */
-    public static  Waypoint createWaypointWithPhoto(Context context, long trackId, Location location) throws IOException {
-        String photoUrl = "";
+    public static Waypoint 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);
-        photoUrl = photoUri.toString();
+        String photoUrl = photoUri.toString();
 
         return new Waypoint("Waypoint name", "Waypoint description", "Waypoint category", "", trackId, 0.0, 0, location, photoUrl);
     }

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

@@ -22,7 +22,6 @@ import android.net.Uri;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import org.junit.Assert;
 import org.junit.Before;
 import org.junit.Test;
 
@@ -30,6 +29,9 @@ 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;
+
 /**
  * Tests {@link CustomContentProvider}.
  *
@@ -51,7 +53,7 @@ public class CustomContentProviderTest {
      */
     @Test
     public void testOnCreate() {
-        Assert.assertTrue(customContentProvider.onCreate(context));
+        assertTrue(customContentProvider.onCreate(context));
     }
 
     /**
@@ -59,13 +61,13 @@ public class CustomContentProviderTest {
      */
     @Test
     public void testGetType() {
-        Assert.assertEquals(TracksColumns.CONTENT_TYPE, customContentProvider.getType(TracksColumns.CONTENT_URI));
-        Assert.assertEquals(TracksColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(TracksColumns.CONTENT_URI.buildUpon(), 1).build()));
+        assertEquals(TracksColumns.CONTENT_TYPE, customContentProvider.getType(TracksColumns.CONTENT_URI));
+        assertEquals(TracksColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(TracksColumns.CONTENT_URI.buildUpon(), 1).build()));
 
-        Assert.assertEquals(TrackPointsColumns.CONTENT_TYPE, customContentProvider.getType(TrackPointsColumns.CONTENT_URI_BY_ID));
-        Assert.assertEquals(TrackPointsColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(TrackPointsColumns.CONTENT_URI_BY_TRACKID.buildUpon(), 1).build()));
+        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()));
 
-        Assert.assertEquals(WaypointsColumns.CONTENT_TYPE, customContentProvider.getType(WaypointsColumns.CONTENT_URI));
-        Assert.assertEquals(WaypointsColumns.CONTENT_ITEMTYPE, customContentProvider.getType(ContentUris.appendId(WaypointsColumns.CONTENT_URI.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()));
     }
 }

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;
@@ -50,6 +49,11 @@ 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;
 
 /**
@@ -83,62 +87,62 @@ public class CustomContentProviderUtilsTest {
 
     @Test
     public void testLocationIterator_noPoints() {
-        testIterator(1, 0, 1, false);
+        testIterator(new Track.Id(1), 0, 1, false);
     }
 
     @Test
     public void testLocationIterator_noBatchAscending() {
-        testIterator(1, 50, 100, false);
-        testIterator(2, 50, 50, false);
+        testIterator(new Track.Id(1), 50, 100, false);
+        testIterator(new Track.Id(2), 50, 50, false);
     }
 
     @Test
     public void testLocationIterator_noBatchDescending() {
-        testIterator(1, 50, 100, true);
-        testIterator(2, 50, 50, true);
+        testIterator(new Track.Id(1), 50, 100, true);
+        testIterator(new Track.Id(2), 50, 50, true);
     }
 
     @Test
     public void testLocationIterator_batchAscending() {
-        testIterator(1, 50, 11, false);
-        testIterator(2, 50, 25, false);
+        testIterator(new Track.Id(1), 50, 11, false);
+        testIterator(new Track.Id(2), 50, 25, false);
     }
 
     @Test
     public void testLocationIterator_batchDescending() {
-        testIterator(1, 50, 11, true);
-        testIterator(2, 50, 25, true);
+        testIterator(new Track.Id(1), 50, 11, true);
+        testIterator(new Track.Id(2), 50, 25, true);
     }
 
     @Test
     public void testLocationIterator_largeTrack() {
-        testIterator(1, 20000, 2000, false);
+        testIterator(new Track.Id(1), 20000, 2000, false);
     }
 
-    private void testIterator(long trackId, int numPoints, int batchSize, boolean descending) {
+    private void testIterator(Track.Id trackId, int numPoints, int batchSize, boolean descending) {
         long lastPointId = initializeTrack(trackId, numPoints);
         contentProviderUtils.setDefaultCursorBatchSize(batchSize);
         List<TrackPoint> locations = new ArrayList<>(numPoints);
         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());
         }
     }
 
-    private long initializeTrack(long id, int numPoints) {
+    private long initializeTrack(Track.Id id, int numPoints) {
         Track track = new Track();
         track.setId(id);
-        track.setName("Test: " + id);
+        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;
     }
@@ -173,13 +177,13 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testCreateTrack() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
 
         int columnIndex = 1;
         // Id
         when(cursorMock.getColumnIndexOrThrow(TracksColumns._ID)).thenReturn(columnIndex);
         when(cursorMock.isNull(columnIndex)).thenReturn(false);
-        when(cursorMock.getLong(columnIndex)).thenReturn(trackId);
+        when(cursorMock.getLong(columnIndex)).thenReturn(trackId.getId());
 
         //Uuid
         columnIndex++;
@@ -189,14 +193,14 @@ public class CustomContentProviderUtilsTest {
 
         // Name
         columnIndex++;
-        String name = NAME_PREFIX + trackId;
+        String name = NAME_PREFIX + trackId.getId();
         when(cursorMock.getColumnIndexOrThrow(TracksColumns.NAME)).thenReturn(columnIndex);
         when(cursorMock.isNull(columnIndex)).thenReturn(false);
         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());
     }
 
     /**
@@ -205,7 +209,7 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testDeleteAllTracks() {
         // Insert track, points and waypoint at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
@@ -213,20 +217,20 @@ public class CustomContentProviderUtilsTest {
 
         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());
+        assertEquals(10, tracksPointsCursor.getCount());
         Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        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());
+        assertEquals(0, tracksPointsCursor.getCount());
         waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(0, waypointCursor.getCount());
+        assertEquals(0, waypointCursor.getCount());
     }
 
     /**
@@ -235,7 +239,7 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testDeleteAllTracks_withWaypointAndPhoto() throws IOException {
         // Insert track, points and waypoint with photo at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
@@ -244,130 +248,137 @@ public class CustomContentProviderUtilsTest {
 
         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());
+        assertEquals(10, tracksPointsCursor.getCount());
         Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        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());
+        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, waypointCursor.getCount());
+        assertFalse(dir.exists());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, long)}.
+     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, Track.Id)}.
      */
     @Test
     public void testDeleteTrack() {
         // Insert three tracks, points of two tracks and way point of one track.
+        long random = System.currentTimeMillis();
+        Track.Id trackId1 = new Track.Id(random);
+        Track.Id trackId2 = new Track.Id(random + 1);
+        Track.Id trackId3 = new Track.Id(random + 2);
 
-        long trackId = System.currentTimeMillis();
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 0);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId1, 0);
 
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 1, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);
 
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId + 1));
-        waypoint.setTrackId(trackId);
+        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId2));
+        waypoint.setTrackId(trackId1);
         contentProviderUtils.insertWaypoint(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());
+        assertEquals(20, tracksPointsCursor.getCount());
         Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(1, waypointCursor.getCount());
+        assertEquals(1, waypointCursor.getCount());
         // Delete one track.
-        contentProviderUtils.deleteTrack(context, trackId);
+        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());
+        assertEquals(20, tracksPointsCursor.getCount());
         waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
-        Assert.assertEquals(0, waypointCursor.getCount());
+        assertEquals(0, waypointCursor.getCount());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, long)}.
+     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, Track.Id)}.
      */
     @Test
     public void testDeleteTrack_withWaypointPhoto() throws IOException {
         // Insert three tracks.
-        long trackId = System.currentTimeMillis();
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 1, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 2, 10);
+        long random = System.currentTimeMillis();
+        Track.Id trackId1 = new Track.Id(random);
+        Track.Id trackId2 = new Track.Id(random + 1);
+        Track.Id trackId3 = new Track.Id(random + 2);
+
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId1, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);
 
         // Insert a waypoint in tracks trackId and trackId + 1.
-        TrackPoint trackPoint1 = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint1.getLocation());
+        TrackPoint trackPoint1 = contentProviderUtils.getLastValidTrackPoint(trackId1);
+        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId1, trackPoint1.getLocation());
         contentProviderUtils.insertWaypoint(waypoint1);
-        File dir1 = FileUtils.getPhotoDir(context, trackId);
+        File dir1 = FileUtils.getPhotoDir(context, trackId1);
 
-        TrackPoint trackPoint2 = contentProviderUtils.getLastValidTrackPoint(trackId + 1);
-        Waypoint waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId + 1, trackPoint2.getLocation());
+        TrackPoint trackPoint2 = contentProviderUtils.getLastValidTrackPoint(trackId2);
+        Waypoint waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId2, trackPoint2.getLocation());
         contentProviderUtils.insertWaypoint(waypoint2);
-        File dir2 = FileUtils.getPhotoDir(context, trackId + 1);
+        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());
+        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(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, trackId);
+        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());
+        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(1, waypointCursor.getCount());
+        assertFalse(dir1.exists());
+        assertTrue(dir2.exists());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getAllTracks()}
+     * Tests the method {@link ContentProviderUtils#getTracks()}
      */
     @Test
     public void testGetAllTracks() {
         // given
-        int initialTrackNumber = contentProviderUtils.getAllTracks().size();
-        long trackId = System.currentTimeMillis();
+        int initialTrackNumber = contentProviderUtils.getTracks().size();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
 
         // when
-        List<Track> allTracks = contentProviderUtils.getAllTracks();
+        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());
     }
 
     /**
@@ -375,19 +386,36 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testGetLastTrack() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
-        Assert.assertEquals(trackId, contentProviderUtils.getLastTrack().getId());
+        assertEquals(trackId, contentProviderUtils.getLastTrack().getId());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrack(long)}
+     * Tests the method {@link ContentProviderUtils#getTrack(Track.Id)}
      */
     @Test
-    public void testGetTrack() {
-        long trackId = System.currentTimeMillis();
+    public void testGetTrack_by_id() {
+        // given
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
-        Assert.assertNotNull(contentProviderUtils.getTrack(trackId));
+
+        // when / then
+        assertNotNull(contentProviderUtils.getTrack(trackId));
+    }
+
+    /**
+     * Tests the method {@link ContentProviderUtils#getTrack(Track.Id)}
+     */
+    @Test
+    public void testGetTrack_by_uuid() {
+        // given
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
+        Track track = TestDataUtil.createTrack(trackId);
+        contentProviderUtils.insertTrack(track);
+
+        // when / then
+        assertNotNull(contentProviderUtils.getTrack(track.getUuid()));
     }
 
     /**
@@ -396,7 +424,7 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testUpdateTrack() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrack(trackId);
         String nameOld = "name1";
         String nameNew = "name2";
@@ -404,10 +432,10 @@ 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());
     }
 
     /**
@@ -415,7 +443,7 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testCreateContentValues_waypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
 
         // Bottom
@@ -441,12 +469,12 @@ public class CustomContentProviderUtilsTest {
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(contentResolverMock);
 
-        long waypointId = System.currentTimeMillis();
+        Waypoint.Id waypointId = new Waypoint.Id(System.currentTimeMillis());
         waypoint.setId(waypointId);
         ContentValues contentValues = contentProviderUtils.createContentValues(waypoint);
-        Assert.assertEquals(waypointId, 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(WaypointsColumns._ID));
+        assertEquals((int) (TestDataUtil.INITIAL_LONGITUDE * 1000000), contentValues.get(WaypointsColumns.LONGITUDE));
+        assertEquals(TEST_DESC, contentValues.get(WaypointsColumns.DESCRIPTION));
     }
 
     /**
@@ -478,19 +506,19 @@ public class CustomContentProviderUtilsTest {
         when(cursorMock.getLong(columnIndex++)).thenReturn(trackId);
 
         Waypoint waypoint = contentProviderUtils.createWaypoint(cursorMock);
-        Assert.assertEquals(id, waypoint.getId());
-        Assert.assertEquals(name, waypoint.getName());
-        Assert.assertEquals(trackId, waypoint.getTrackId());
+        assertEquals(id, waypoint.getId().getId());
+        assertEquals(name, waypoint.getName());
+        assertEquals(trackId, waypoint.getTrackId().getId());
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, long)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_onlyOneWayPoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -500,25 +528,25 @@ public class CustomContentProviderUtilsTest {
         contentProviderUtils.insertWaypoint(waypoint1);
 
         // Check insert was done.
-        Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
+        assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
 
         // Delete
         contentProviderUtils.deleteWaypoint(context, waypoint1Id);
 
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, long)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_onlyOneWayPointWithPhotoUrl() throws IOException {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -527,32 +555,32 @@ public class CustomContentProviderUtilsTest {
         contentProviderUtils.insertWaypoint(waypoint1);
 
         // Check insert was done.
-        Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
+        assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(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);
 
         // Check waypoint doesn't exists and photo folder was deleted.
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
-        Assert.assertFalse(dir.exists());
+        assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertFalse(dir.exists());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteWaypoint(Context, long)} when there is more than one waypoint in the track.
+     * Tests the method {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)} when there is more than one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_hasNextWayPoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
 //        Track track = TestDataUtil.createTrackAndInsert(trackId, 10);
@@ -575,27 +603,27 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint1.setDescription(MOCK_DESC);
         waypoint1.setTrackId(trackId);
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
 
         Waypoint waypoint2 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint2.setDescription(MOCK_DESC);
         waypoint2.setTrackId(trackId);
-        long waypoint2Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint2));
+        Waypoint.Id waypoint2Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint2)));
 
         // Delete
-        Assert.assertNotNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertNotNull(contentProviderUtils.getWaypoint(waypoint1Id));
         contentProviderUtils.deleteWaypoint(context, waypoint1Id);
-        Assert.assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
+        assertNull(contentProviderUtils.getWaypoint(waypoint1Id));
 
-        Assert.assertEquals(MOCK_DESC, contentProviderUtils.getWaypoint(waypoint2Id).getDescription());
+        assertEquals(MOCK_DESC, contentProviderUtils.getWaypoint(waypoint2Id).getDescription());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(long)}.
+     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(Track.Id)}.
      */
     @Test
     public void testGetNextWaypointNumber() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
@@ -611,24 +639,24 @@ public class CustomContentProviderUtilsTest {
         contentProviderUtils.insertWaypoint(waypoint3);
         contentProviderUtils.insertWaypoint(waypoint4);
 
-        Assert.assertEquals(4, contentProviderUtils.getNextWaypointNumber(trackId));
+        assertEquals(4, contentProviderUtils.getNextWaypointNumber(trackId));
     }
 
     /**
      * Tests the method {@link ContentProviderUtils#insertWaypoint(Waypoint)} and
-     * {@link ContentProviderUtils#getWaypoint(long)}.
+     * {@link ContentProviderUtils#getWaypoint(Waypoint.Id)}.
      */
     @Test
     public void testInsertAndGetWaypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
-        Assert.assertEquals(TEST_DESC, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertEquals(TEST_DESC, contentProviderUtils.getWaypoint(waypointId).getDescription());
     }
 
     /**
@@ -636,21 +664,21 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testUpdateWaypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
         // Update
         waypoint = contentProviderUtils.getWaypoint(waypointId);
         waypoint.setDescription(TEST_DESC_NEW);
         contentProviderUtils.updateWaypoint(context, waypoint);
 
-        Assert.assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
     }
 
     /**
@@ -660,7 +688,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_withPhoto() throws IOException {
         // tests after update waypoint with photo the photo remains in the storage.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -668,12 +696,12 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
 
         // Update
         waypoint = contentProviderUtils.getWaypoint(waypointId);
@@ -681,12 +709,12 @@ public class CustomContentProviderUtilsTest {
         waypoint.setDescription(TEST_DESC_NEW);
         contentProviderUtils.updateWaypoint(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.getWaypoint(waypointId).getName());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertTrue(waypoint.hasPhoto());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
     }
 
     /**
@@ -696,7 +724,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_delPhotoAndDir() throws IOException {
         // tests after update waypoint if user deletes the photo then file photo is deleted from the storage. Also empty directory is deleted.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -704,12 +732,12 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(1, dir.list().length);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
 
         // Update
         waypoint = contentProviderUtils.getWaypoint(waypointId);
@@ -718,10 +746,10 @@ public class CustomContentProviderUtilsTest {
         waypoint.setPhotoUrl(null);
         contentProviderUtils.updateWaypoint(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.getWaypoint(waypointId).getName());
+        assertEquals(TEST_DESC_NEW, contentProviderUtils.getWaypoint(waypointId).getDescription());
+        assertFalse(waypoint.hasPhoto());
+        assertFalse(dir.exists());
     }
 
     /**
@@ -731,7 +759,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_delPhotoNotDir() throws IOException {
         // tests after update waypoint if user deletes the photo then file photo is deleted from the storage. Directory remains if there are more photos from other waypoints.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert two waypoints with photos.
@@ -742,41 +770,41 @@ public class CustomContentProviderUtilsTest {
         Waypoint otherWaypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         otherWaypoint.setDescription(TEST_DESC);
         otherWaypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
-        long otherWaypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(otherWaypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        contentProviderUtils.insertWaypoint(otherWaypoint);
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
-        Assert.assertTrue(dir.exists());
-        Assert.assertTrue(dir.isDirectory());
-        Assert.assertEquals(2, dir.list().length);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(2, dir.list().length);
 
         // Update one waypoint deleting photo.
         waypoint = contentProviderUtils.getWaypoint(waypointId);
         waypoint.setPhotoUrl(null);
         contentProviderUtils.updateWaypoint(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.getWaypoint(waypointId).getDescription());
+        assertFalse(waypoint.hasPhoto());
+        assertTrue(dir.exists());
+        assertTrue(dir.isDirectory());
+        assertEquals(1, dir.list().length);
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#bulkInsertTrackPoint(TrackPoint[], long)}.
+     * Tests the method {@link ContentProviderUtils#bulkInsertTrackPoint(TrackPoint[], Track.Id)}.
      */
     @Test
     public void testBulkInsertTrackPoint() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         TestDataUtil.insertTrackWithLocations(contentProviderUtils, track.first, track.second);
 
         // 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());
     }
 
     /**
@@ -815,31 +843,31 @@ 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());
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#insertTrackPoint(TrackPoint, long)}.
+     * {@link ContentProviderUtils#insertTrackPoint(TrackPoint, Track.Id)}.
      */
     @Test
     public void testInsertTrackPoint() {
         // Insert track, point at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         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
     public void testInsertAndLoadTrackPoint() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint trackPoint = TestDataUtil.createTrackPoint(5);
@@ -852,19 +880,19 @@ 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);
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getLastValidTrackPoint(long)}.
+     * Tests the method {@link ContentProviderUtils#getLastValidTrackPoint(Track.Id)}.
      */
     @Test
     public void testGetLastValidTrackPoint() {
         // Insert track, points at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint lastTrackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
@@ -872,12 +900,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(Track.Id, long, int, boolean)} in descending.
      */
     @Test
     public void testGetTrackPointCursor_desc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -890,16 +918,16 @@ public class CustomContentProviderUtilsTest {
         Cursor cursor = contentProviderUtils.getTrackPointCursor(trackId, trackpointIds[1], 5, true);
 
         // then
-        Assert.assertEquals(2, cursor.getCount());
+        assertEquals(2, cursor.getCount());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(Track.Id, long, int, boolean)} in ascending.
      */
     @Test
     public void testGetTrackPointCursor_asc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -912,16 +940,16 @@ public class CustomContentProviderUtilsTest {
         Cursor cursor = contentProviderUtils.getTrackPointCursor(trackId, trackpointIds[8], 5, false);
 
         // then
-        Assert.assertEquals(2, cursor.getCount());
+        assertEquals(2, cursor.getCount());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(Track.Id, long, boolean)} in descending.
      */
     @Test
     public void testGetTrackPointLocationIterator_desc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -936,21 +964,21 @@ 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());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(Track.Id, long, boolean)} in ascending.
      */
     @Test
     public void testGetTrackPointLocationIterator_asc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -966,34 +994,32 @@ 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());
     }
 
     /**
      * Checks the value of a location.
      *
-     * @param i        the index of this location which created in the method {@link TestDataUtil#createTrack(long, int)}
+     * @param i        the index of this location which created in the method {@link TestDataUtil#createTrack(Track.Id, int)}
      * @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(new long[]{}));
-        Assert.assertEquals("12", ContentProviderUtils.formatIdListForUri(new long[]{12}));
-        Assert.assertEquals("42,43,44", ContentProviderUtils.formatIdListForUri(new long[]{42, 43, 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

@@ -2,6 +2,7 @@ package de.dennisguse.opentracks.content.provider;
 
 import android.content.Context;
 import android.database.Cursor;
+import android.database.sqlite.SQLiteConstraintException;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 
@@ -9,7 +10,7 @@ import androidx.annotation.VisibleForTesting;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -21,6 +22,10 @@ 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;
+import static org.junit.Assert.fail;
+
 @RunWith(AndroidJUnit4.class)
 public class CustomSQLiteOpenHelperTest {
 
@@ -88,6 +93,7 @@ public class CustomSQLiteOpenHelperTest {
     }
 
     @Before
+    @After
     public void setUp() {
         context.deleteDatabase(DATABASE_NAME);
     }
@@ -95,13 +101,15 @@ public class CustomSQLiteOpenHelperTest {
     @Test
     public void onCreate() {
         try (SQLiteDatabase db = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getWritableDatabase()) {
-            Assert.assertTrue(hasSqlCreate(db, TracksColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, TracksColumns.CREATE_TABLE));
 
-            Assert.assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE));
-            Assert.assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE_INDEX));
+            assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE_INDEX));
 
-            Assert.assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE));
-            Assert.assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE_INDEX));
+            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE_INDEX));
+        } catch (Exception e) {
+            fail();
         }
     }
 
@@ -127,18 +135,18 @@ public class CustomSQLiteOpenHelperTest {
         }
 
         // then - verify table structure
-        Assert.assertEquals(3, tableByUpgrade.size());
-        Assert.assertEquals(tableByUpgrade.size(), tablesByCreate.size());
+        assertEquals(3, tableByUpgrade.size());
+        assertEquals(tableByUpgrade.size(), tablesByCreate.size());
 
-        Assert.assertEquals(tablesByCreate.get(TracksColumns.TABLE_NAME), tableByUpgrade.get(TracksColumns.TABLE_NAME));
-        Assert.assertEquals(tablesByCreate.get(TrackPointsColumns.TABLE_NAME), tableByUpgrade.get(TrackPointsColumns.TABLE_NAME));
-        Assert.assertEquals(tablesByCreate.get(WaypointsColumns.TABLE_NAME), tableByUpgrade.get(WaypointsColumns.TABLE_NAME));
+        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));
 
         // then - verify custom indices
-        Assert.assertEquals(3, indicesByCreate.size());
-        Assert.assertEquals(indicesByUpgrade.get(TracksColumns.TABLE_NAME), indicesByCreate.get(TracksColumns.TABLE_NAME));
-        Assert.assertEquals(indicesByUpgrade.get(TrackPointsColumns.TABLE_NAME), indicesByCreate.get(TrackPointsColumns.TABLE_NAME));
-        Assert.assertEquals(indicesByUpgrade.get(WaypointsColumns.TABLE_NAME), indicesByCreate.get(WaypointsColumns.TABLE_NAME));
+        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));
     }
 
     @Test
@@ -155,12 +163,23 @@ public class CustomSQLiteOpenHelperTest {
         }
 
         // then - verify table structure
-        Assert.assertEquals(TRACKS_CREATE_TABLE_V23, tablesByDowngrade.get("tracks"));
-        Assert.assertEquals(TRACKPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("trackpoints"));
-        Assert.assertEquals(WAYPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("waypoints"));
+        assertEquals(TRACKS_CREATE_TABLE_V23, tablesByDowngrade.get("tracks"));
+        assertEquals(TRACKPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("trackpoints"));
+        assertEquals(WAYPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("waypoints"));
 
         // then - verify custom indices
-        Assert.assertEquals(0, indicesByDowngrade.size());
+        assertEquals(0, indicesByDowngrade.size());
+    }
+
+    @Test
+    public void track_uuid_unique() {
+        try (SQLiteDatabase db = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getWritableDatabase()) {
+            db.execSQL("INSERT INTO tracks (uuid) VALUES (0x00)");
+            db.execSQL("INSERT INTO tracks (uuid) VALUES (0x00)");
+            fail("unique constraint not enforced");
+        } catch (SQLiteConstraintException e) {
+            assertTrue(e.getMessage().contains("UNIQUE constraint failed: tracks.uuid"));
+        }
     }
 
     private void createVersion23() {

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

@@ -3,33 +3,43 @@ 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;
+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.assertArrayEquals(new long[]{}, ShareContentProvider.parseURI(uri));
+        assertEquals(0, ShareContentProvider.parseURI(uri).size());
     }
 
     @Test
-    public void testCreateandParseURI_valid() {
-        long[] trackIds = {1, 3, 5};
+    public void testCreateAndParseURI_valid() {
+        Set<Track.Id> trackIds = new HashSet<>();
+        trackIds.add(new Track.Id(1));
+        trackIds.add(new Track.Id(3));
+        trackIds.add(new Track.Id(5));
+
         Pair<Uri, String> shareURIandMIME = ShareContentProvider.createURI(trackIds, "TrackName", TrackFileFormat.KML_ONLY_TRACK);
 
-        Assert.assertArrayEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
+        assertEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
     }
 
     @Test
     public void testCreateURIescapeFilename() {
-        long[] trackIds = {1};
+        Set<Track.Id> trackIds = new HashSet<>();
+        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.MS_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.MS_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.MS_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

@@ -24,21 +24,21 @@ import android.net.Uri;
 
 import androidx.test.core.app.ApplicationProvider;
 
-import org.junit.Assert;
 import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 
 import java.text.SimpleDateFormat;
+import java.time.ZoneOffset;
 import java.util.Locale;
 import java.util.SimpleTimeZone;
+import java.util.TimeZone;
 
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-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 static org.junit.Assert.assertEquals;
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.eq;
 import static org.mockito.Mockito.when;
@@ -64,11 +64,11 @@ public abstract class AbstractTestFileTrackImporter {
 
     static final SimpleDateFormat DATE_FORMAT_0 = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'", Locale.US);
     static final SimpleDateFormat DATE_FORMAT_1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.US);
-    static final long TRACK_ID_0 = 1;
+
     static final long TRACK_POINT_ID_0 = 1;
     static final long TRACK_POINT_ID_1 = 2;
     static final long TRACK_POINT_ID_3 = 4;
-    static final Uri TRACK_ID_0_URI = ContentUris.appendId(TracksColumns.CONTENT_URI.buildUpon(), TRACK_ID_0).build();
+
     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();
 
@@ -76,7 +76,7 @@ public abstract class AbstractTestFileTrackImporter {
 
     static {
         // We can't omit the timezones in the test, otherwise it'll use the local timezone and fail depending on where the test runner is.
-        SimpleTimeZone utc = new SimpleTimeZone(0, "UTC");
+        TimeZone utc = SimpleTimeZone.getTimeZone(ZoneOffset.UTC);
         DATE_FORMAT_0.setTimeZone(utc);
         DATE_FORMAT_1.setTimeZone(utc);
     }
@@ -96,11 +96,11 @@ public abstract class AbstractTestFileTrackImporter {
     /**
      * Expects the first track point to be added.
      *
-     * @param trackPoint     the trackPoint
+     * @param trackPoint   the trackPoint
      * @param trackId      the track id
      * @param trackPointId the track point id
      */
-    protected void expectFirstTrackPoint(TrackPoint trackPoint, long trackId, long trackPointId) {
+    protected void expectFirstTrackPoint(TrackPoint trackPoint, Track.Id trackId, long trackPointId) {
         when(contentProviderUtils.bulkInsertTrackPoint(trackPoint != null ? (TrackPoint[]) any() : (TrackPoint[]) any(), eq(trackId))).thenReturn(1);
     }
 
@@ -111,10 +111,10 @@ public abstract class AbstractTestFileTrackImporter {
      * @param lastTrack   true if it is the last track in the gpx
      * @param trackId     the track id
      */
-    protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, long trackId) {
+    protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, Track.Id trackId) {
         contentProviderUtils.updateTrack(trackCaptor.capture());
 
-        when(contentProviderUtils.insertWaypoint((Waypoint) any())).thenReturn(WAYPOINT_ID_O_URI);
+        when(contentProviderUtils.insertWaypoint(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

@@ -20,6 +20,7 @@ import java.util.ArrayList;
 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;
@@ -28,9 +29,11 @@ import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.util.PreferencesUtils;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 /**
  * Export a track to {@link TrackFileFormat} and verify that the import is identical.
@@ -53,8 +56,8 @@ public class ExportImportTest {
     private final List<Waypoint> waypoints = new ArrayList<>();
     private final List<TrackPoint> trackPoints = new ArrayList<>();
 
-    private long importTrackId;
-    private final long trackId = System.currentTimeMillis();
+    private Track.Id importTrackId;
+    private final Track.Id trackId = new Track.Id(System.currentTimeMillis());
 
     @Before
     public void setUp() {
@@ -103,16 +106,17 @@ public class ExportImportTest {
         // given
         Track track = contentProviderUtils.getTrack(trackId);
 
-        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL.newTrackExporter(context, new Track[]{track});
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL.newTrackExporter(context);
 
         // when
         // 1. export
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        trackExporter.writeTrack(context, outputStream);
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
         InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
-        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context, -1L);
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
         importTrackId = trackImporter.importFile(inputStream);
 
         // then
@@ -123,6 +127,7 @@ public class ExportImportTest {
         assertEquals(track.getDescription(), importedTrack.getDescription());
         assertEquals(track.getName(), importedTrack.getName());
         assertEquals(track.getIcon(), importedTrack.getIcon());
+        assertEquals(track.getUuid(), importedTrack.getUuid());
 
         // 2. waypoints
         assertWaypoints();
@@ -137,16 +142,17 @@ public class ExportImportTest {
         // given
         Track track = contentProviderUtils.getTrack(trackId);
 
-        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.newTrackExporter(context, new Track[]{track});
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.newTrackExporter(context);
 
         // when
         // 1. export
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        trackExporter.writeTrack(context, outputStream);
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
         InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
-        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context, -1L);
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
         importTrackId = trackImporter.importFile(inputStream);
 
         // then
@@ -165,6 +171,30 @@ public class ExportImportTest {
         assertTrackpoints(true, true, true);
     }
 
+    @LargeTest
+    @Test
+    public void kml_with_trackdetail_and_sensordata_duplicate_trackUUID() {
+        // given
+        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
+        Track track = contentProviderUtils.getTrack(trackId);
+
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.newTrackExporter(context);
+
+        // when
+        // 1. export
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        trackExporter.writeTrack(track, outputStream);
+
+        // 2. import
+        InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
+        importTrackId = trackImporter.importFile(inputStream);
+
+        // then
+        Track importedTrack = contentProviderUtils.getTrack(importTrackId);
+        assertNull(importedTrack);
+    }
+
     @LargeTest
     @Test
     public void kmz_only_track() {
@@ -199,12 +229,13 @@ public class ExportImportTest {
         // given
         Track track = contentProviderUtils.getTrack(trackId);
 
-        TrackExporter trackExporter = TrackFileFormat.GPX.newTrackExporter(context, new Track[]{track});
+        TrackExporter trackExporter = TrackFileFormat.GPX.newTrackExporter(context);
 
         // when
         // 1. export
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        trackExporter.writeTrack(context, outputStream);
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
         InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
@@ -229,6 +260,31 @@ public class ExportImportTest {
         assertTrackpoints(false, true, true);
     }
 
+    @LargeTest
+    @Test
+    public void gpx_duplicate_trackUUID() {
+        // given
+        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
+        Track track = contentProviderUtils.getTrack(trackId);
+
+        TrackExporter trackExporter = TrackFileFormat.GPX.newTrackExporter(context);
+
+        // when
+        // 1. export
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        trackExporter.writeTrack(track, outputStream);
+
+        // 2. import
+        InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+        AbstractFileTrackImporter trackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
+        importTrackId = trackImporter.importFile(inputStream);
+
+        // then
+        // 1. track
+        Track trackImported = contentProviderUtils.getTrack(importTrackId);
+        assertNull(trackImported);
+    }
+
     private void assertWaypoints() {
         assertEquals(waypoints.size(), contentProviderUtils.getWaypointCount(importTrackId));
 

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

@@ -1,217 +0,0 @@
-/*
- * Copyright 2010 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.io.file.importer;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.junit.MockitoJUnitRunner;
-
-import java.io.ByteArrayInputStream;
-import java.io.InputStream;
-
-import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.util.PreferencesUtils;
-
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.anyLong;
-import static org.mockito.Mockito.atLeastOnce;
-import static org.mockito.Mockito.eq;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-/**
- * Tests for {@link GpxFileTrackImporter}.
- *
- * @author Steffen Horlacher
- */
-@RunWith(MockitoJUnitRunner.class)
-public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
-
-    private static final String VALID_ONE_TRACK_ONE_SEGMENT_GPX = "<gpx><trk>"
-            + getNameAndDescription(TRACK_NAME_0, TRACK_DESCRIPTION_0) + "<trkseg>"
-            + getTrackPoint(0, TRACK_TIME_0) + getTrackPoint(1, TRACK_TIME_1) + "</trkseg></trk></gpx>";
-    private static final String VALID_ONE_TRACK_TWO_SEGMENTS_GPX = "<gpx><trk>"
-            + getNameAndDescription(TRACK_NAME_0, TRACK_DESCRIPTION_0) + "<trkseg>"
-            + getTrackPoint(0, TRACK_TIME_0) + getTrackPoint(1, TRACK_TIME_1) + "</trkseg><trkseg>"
-            + getTrackPoint(2, TRACK_TIME_2) + getTrackPoint(3, TRACK_TIME_3) + "</trkseg></trk></gpx>";
-    private static final String VALID_ONE_TRACK_TWO_SEGMENTS_NO_TIME_GPX = "<gpx><trk>"
-            + getNameAndDescription(TRACK_NAME_0, TRACK_DESCRIPTION_0) + "<trkseg>"
-            + getTrackPoint(0, null) + getTrackPoint(1, null) + "</trkseg><trkseg>"
-            + getTrackPoint(2, null) + getTrackPoint(3, null) + "</trkseg></trk></gpx>";
-
-    private static final String INVALID_XML_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.substring(0, VALID_ONE_TRACK_ONE_SEGMENT_GPX.length() - 50);
-    private static final String INVALID_LOCATION_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.replaceAll(Double.toString(TRACK_LATITUDE), "1000.0");
-    private static final String INVALID_TIME_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.replaceAll(TRACK_TIME_0, "invalid");
-    private static final String INVALID_ALTITUDE_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.replaceAll(Double.toString(TRACK_ELEVATION), "invalid");
-    private static final String INVALID_LATITUDE_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.replaceAll(Double.toString(TRACK_LATITUDE), "invalid");
-    private static final String INVALID_LONGITUDE_GPX = VALID_ONE_TRACK_ONE_SEGMENT_GPX.replaceAll(Double.toString(TRACK_LONGITUDE), "invalid");
-
-    private static String getNameAndDescription(String name, String description) {
-        return "<name><![CDATA[" + name + "]]></name>" + "<desc><![CDATA[" + description + "]]></desc>";
-    }
-
-    private static String getTrackPoint(int index, String time) {
-        String latitude = Double.toString(TRACK_LATITUDE + index);
-        String longitude = Double.toString(TRACK_LONGITUDE + index);
-        String elevation = Double.toString(TRACK_ELEVATION + index);
-        StringBuilder buffer = new StringBuilder();
-        buffer.append("<trkpt lat=\"").append(latitude).append("\" lon=\"").append(longitude).append("\"><ele>").append(elevation).append("</ele>");
-        if (time != null) {
-            buffer.append("<time>").append(time).append("</time>");
-        }
-        buffer.append("</trkpt>");
-        return buffer.toString();
-    }
-
-    @Test
-    public void testOneTrackOneSegment() throws Exception {
-        // given
-        TrackPoint trackPoint0 = createTrackPoint(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-        TrackPoint trackPoint1 = createTrackPoint(1, DATE_FORMAT_1.parse(TRACK_TIME_1).getTime());
-
-        when(contentProviderUtils.insertTrack((Track) any())).thenReturn(TRACK_ID_0_URI);
-        expectFirstTrackPoint(trackPoint0, TRACK_ID_0, TRACK_POINT_ID_0);
-
-        // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), eq(TRACK_ID_0))).thenReturn(1);
-        when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_1);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-        expectTrackUpdate(trackCaptor, true, TRACK_ID_0);
-
-        // when
-        InputStream inputStream = new ByteArrayInputStream(VALID_ONE_TRACK_ONE_SEGMENT_GPX.getBytes());
-        GpxFileTrackImporter gpxFileTrackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
-        long trackId = gpxFileTrackImporter.importFile(inputStream);
-
-        // then
-        Assert.assertEquals(TRACK_ID_0, trackId);
-
-        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
-        long time0 = DATE_FORMAT_0.parse(TRACK_TIME_0).getTime();
-        long time1 = DATE_FORMAT_1.parse(TRACK_TIME_1).getTime();
-        Assert.assertEquals(time1 - time0, trackCaptor.getValue().getTrackStatistics().getTotalTime());
-        verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, time0);
-    }
-
-    @Test
-    public void testOneTrackTwoSegments() throws Exception {
-        // given
-        TrackPoint trackPoint0 = createTrackPoint(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-
-        when(contentProviderUtils.insertTrack((Track) any())).thenReturn(TRACK_ID_0_URI);
-        expectFirstTrackPoint(trackPoint0, TRACK_ID_0, TRACK_POINT_ID_0);
-        // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), eq(TRACK_ID_0))).thenReturn(5);
-        when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-        expectTrackUpdate(trackCaptor, true, TRACK_ID_0);
-
-        // when
-        InputStream inputStream = new ByteArrayInputStream(VALID_ONE_TRACK_TWO_SEGMENTS_GPX.getBytes());
-        GpxFileTrackImporter gpxFileTrackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
-        long trackId = gpxFileTrackImporter.importFile(inputStream);
-
-        // then
-        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
-        Assert.assertEquals(TRACK_ID_0, trackId);
-
-        long time0 = DATE_FORMAT_0.parse(TRACK_TIME_0).getTime();
-        long time1 = DATE_FORMAT_1.parse(TRACK_TIME_1).getTime();
-        long time2 = DATE_FORMAT_1.parse(TRACK_TIME_2).getTime();
-        long time3 = DATE_FORMAT_1.parse(TRACK_TIME_3).getTime();
-        Assert.assertEquals(time1 - time0 + time3 - time2, trackCaptor.getValue().getTrackStatistics().getTotalTime());
-
-        verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-    }
-
-    @Test
-    public void testOneTrackTwoSegmentsNoTime() {
-        // given
-        when(contentProviderUtils.insertTrack((Track) any())).thenReturn(TRACK_ID_0_URI);
-        expectFirstTrackPoint(null, TRACK_ID_0, TRACK_POINT_ID_0);
-
-        // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), eq(TRACK_ID_0))).thenReturn(5);
-        when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-        expectTrackUpdate(trackCaptor, true, TRACK_ID_0);
-
-        // when
-        InputStream inputStream = new ByteArrayInputStream(VALID_ONE_TRACK_TWO_SEGMENTS_NO_TIME_GPX.getBytes());
-        GpxFileTrackImporter gpxFileTrackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
-        long trackId = gpxFileTrackImporter.importFile(inputStream);
-
-        // then
-        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
-        Assert.assertEquals(TRACK_ID_0, trackId);
-
-        Assert.assertEquals(0, trackCaptor.getValue().getTrackStatistics().getTotalTime());
-        verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, -1L);
-    }
-
-    @Test
-    public void testInvalidXml() {
-        testInvalidGpx(INVALID_XML_GPX);
-    }
-
-    @Test
-    public void testInvalidLocation() {
-        testInvalidGpx(INVALID_LOCATION_GPX);
-    }
-
-    @Test
-    public void testInvalidTime() {
-        testInvalidGpx(INVALID_TIME_GPX);
-    }
-
-    @Test
-    public void testInvalidAltitude() {
-        testInvalidGpx(INVALID_ALTITUDE_GPX);
-    }
-
-    @Test
-    public void testInvalidLatitude() {
-        testInvalidGpx(INVALID_LATITUDE_GPX);
-    }
-
-    @Test
-    public void testInvalidLongitude() {
-        testInvalidGpx(INVALID_LONGITUDE_GPX);
-    }
-
-    private void testInvalidGpx(String xml) {
-        when(contentProviderUtils.insertTrack((Track) any())).thenReturn(TRACK_ID_0_URI);
-
-        // For the following, use StubReturn since we don't care whether they are invoked or not.
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), anyLong())).thenReturn(1);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-        contentProviderUtils.deleteTrack(context, TRACK_ID_0);
-
-        InputStream inputStream = new ByteArrayInputStream(xml.getBytes());
-        GpxFileTrackImporter gpxFileTrackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
-        long trackId = gpxFileTrackImporter.importFile(inputStream);
-        Assert.assertEquals(-1L, trackId);
-    }
-}

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

@@ -1,133 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.io.file.importer;
-
-import org.junit.Assert;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.junit.MockitoJUnitRunner;
-
-import java.io.ByteArrayInputStream;
-import java.io.InputStream;
-
-import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.util.PreferencesUtils;
-
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.atLeastOnce;
-import static org.mockito.Mockito.eq;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-/**
- * Tests for {@link KmlFileTrackImporter}.
- *
- * @author Jimmy Shih
- */
-@RunWith(MockitoJUnitRunner.class)
-public class KmlFileTrackImporterTest extends AbstractTestFileTrackImporter {
-
-    private static final String VALID_ONE_TRACK_ONE_SEGMENT_GPX = "<kml xmlns:gx=\"http://www.google.com/kml/ext/2.2\"><Placemark>"
-                    + getNameAndDescription(TRACK_NAME_0, TRACK_DESCRIPTION_0) + "<gx:MultiTrack><gx:Track>"
-                    + getTrackPoint(0, TRACK_TIME_0) + getTrackPoint(1, TRACK_TIME_1)
-                    + "</gx:Track></gx:MultiTrack></Placemark></kml>";
-    private static final String VALID_ONE_TRACK_TWO_SEGMENTS_GPX = "<kml xmlns:gx=\"http://www.google.com/kml/ext/2.2\"><Placemark>"
-                    + getNameAndDescription(TRACK_NAME_0, TRACK_DESCRIPTION_0) + "<gx:MultiTrack><gx:Track>"
-                    + getTrackPoint(0, TRACK_TIME_0) + getTrackPoint(1, TRACK_TIME_1) + "</gx:Track><gx:Track>"
-                    + getTrackPoint(2, TRACK_TIME_2) + getTrackPoint(3, TRACK_TIME_3)
-                    + "</gx:Track></gx:MultiTrack></Placemark></kml>";
-
-    private static String getNameAndDescription(String name, String description) {
-        return "<name><![CDATA[" + name + "]]></name><description><![CDATA[" + description
-                + "]]></description>";
-    }
-
-    private static String getTrackPoint(int index, String time) {
-        String latitude = Double.toString(TRACK_LATITUDE + index);
-        String longitude = Double.toString(TRACK_LONGITUDE + index);
-        String altitude = Double.toString(TRACK_ELEVATION + index);
-        return "<when>" + time + "</when>" + "<gx:coord>" + longitude + " " + latitude + " " + altitude + "</gx:coord>";
-    }
-
-    @Test
-    public void testOneTrackOneSegment() throws Exception {
-        // given
-        TrackPoint trackPoint0 = createTrackPoint(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-        TrackPoint trackPointl1 = createTrackPoint(1, DATE_FORMAT_1.parse(TRACK_TIME_1).getTime());
-
-        contentProviderUtils.clearTrack(context, TRACK_ID_0);
-        expectFirstTrackPoint(trackPoint0, TRACK_ID_0, TRACK_POINT_ID_0);
-
-        // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), eq(TRACK_ID_0))).thenReturn(1);
-        when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_1);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-        expectTrackUpdate(trackCaptor, true, TRACK_ID_0);
-
-        // when
-        InputStream inputStream = new ByteArrayInputStream(VALID_ONE_TRACK_ONE_SEGMENT_GPX.getBytes());
-        KmlFileTrackImporter kmlFileTrackImporter = new KmlFileTrackImporter(context, TRACK_ID_0, contentProviderUtils);
-        long trackId = kmlFileTrackImporter.importFile(inputStream);
-
-        // then
-        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
-        Assert.assertEquals(TRACK_ID_0, trackId);
-
-        long time0 = DATE_FORMAT_0.parse(TRACK_TIME_0).getTime();
-        long time1 = DATE_FORMAT_1.parse(TRACK_TIME_1).getTime();
-        Assert.assertEquals(time1 - time0, trackCaptor.getValue().getTrackStatistics().getTotalTime());
-        verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, time0);
-    }
-
-    @Test
-    public void testOneTrackTwoSegments() throws Exception {
-        // given
-        TrackPoint trackPoint0 = createTrackPoint(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-
-        contentProviderUtils.clearTrack(context, TRACK_ID_0);
-        expectFirstTrackPoint(trackPoint0, TRACK_ID_0, TRACK_POINT_ID_0);
-
-        // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint((TrackPoint[]) any(), eq(TRACK_ID_0))).thenReturn(5);
-        when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
-
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-        expectTrackUpdate(trackCaptor, true, TRACK_ID_0);
-
-        // when
-        InputStream inputStream = new ByteArrayInputStream(VALID_ONE_TRACK_TWO_SEGMENTS_GPX.getBytes());
-        KmlFileTrackImporter kmlFileTrackImporter = new KmlFileTrackImporter(context, TRACK_ID_0, contentProviderUtils);
-        long trackId = kmlFileTrackImporter.importFile(inputStream);
-
-        // then
-        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
-        Assert.assertEquals(TRACK_ID_0, trackId);
-
-        long time0 = DATE_FORMAT_0.parse(TRACK_TIME_0).getTime();
-        long time1 = DATE_FORMAT_1.parse(TRACK_TIME_1).getTime();
-        long time2 = DATE_FORMAT_1.parse(TRACK_TIME_2).getTime();
-        long time3 = DATE_FORMAT_1.parse(TRACK_TIME_3).getTime();
-        Assert.assertEquals(time1 - time0 + time3 - time2, trackCaptor.getValue().getTrackStatistics().getTotalTime());
-
-        verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
-    }
-}

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

@@ -21,6 +21,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.location.Location;
 import android.os.IBinder;
+import android.os.Looper;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -31,8 +32,8 @@ 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;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -52,6 +53,13 @@ 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.
  *
@@ -69,10 +77,17 @@ public class TrackRecordingServiceTest {
     @Rule
     public GrantPermissionRule mRuntimePermissionRule = GrantPermissionRule.grant(android.Manifest.permission.ACCESS_FINE_LOCATION);
 
+    @BeforeClass
+    public static void preSetUp() {
+        // Prepare looper for Android's message queue
+        if (Looper.myLooper() == null) Looper.prepare();
+    }
+
+
     private final Context context = ApplicationProvider.getApplicationContext();
     private ContentProviderUtils contentProviderUtils;
 
-    private final long trackId = Math.abs(new Random().nextLong());
+    private final Track.Id trackId = new Track.Id(Math.abs(new Random().nextLong()));
 
     static Intent createStartIntent(Context context) {
         return new Intent(context, TrackRecordingService.class);
@@ -111,22 +126,22 @@ 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
     @Test
     public void testRecording_noTracks() throws Exception {
         // given
-        List<Track> tracks = contentProviderUtils.getAllTracks();
-        Assert.assertTrue(tracks.isEmpty());
+        List<Track> tracks = contentProviderUtils.getTracks();
+        assertTrue(tracks.isEmpty());
 
         // when
         Intent startIntent = createStartIntent(context);
@@ -135,8 +150,8 @@ public class TrackRecordingServiceTest {
 
         // then
         // Test if we start in no-recording mode by default.
-        Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(-1L, service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -149,8 +164,8 @@ public class TrackRecordingServiceTest {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
 
         // then
-        Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -163,7 +178,7 @@ public class TrackRecordingServiceTest {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
 
         // then
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
     }
 
     @MediumTest
@@ -178,21 +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
@@ -204,20 +219,20 @@ 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.")
@@ -233,8 +248,8 @@ public class TrackRecordingServiceTest {
         PreferencesUtils.setLong(context, R.string.recording_track_id_key, 123L);
 
         // then
-        Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -243,18 +258,18 @@ public class TrackRecordingServiceTest {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
         service.startNewTrack();
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
 
-        long trackId = service.getRecordingTrackId();
+        Track.Id trackId = service.getRecordingTrackId();
 
         // when
-        long newTrackId = service.startNewTrack();
+        Track.Id newTrackId = service.startNewTrack();
 
         // then
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, newTrackId);
+        assertNull(newTrackId);
 
-        Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
-        Assert.assertEquals(trackId, service.getRecordingTrackId());
+        assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
+        assertEquals(trackId, service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -262,15 +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.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        assertFalse(PreferencesUtils.isRecording(context));
+        assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -278,13 +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
-        long waypointId = service.insertWaypoint(null, null, null, null);
+        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
 
         // then
-        Assert.assertEquals(-1L, waypointId);
+        assertNull(waypointId);
     }
 
     @MediumTest
@@ -293,35 +308,35 @@ public class TrackRecordingServiceTest {
         // given
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
         service.startNewTrack();
-        Assert.assertTrue(service.isRecording());
+        assertTrue(service.isRecording());
         newTrackPoint(service);
-        long trackId = service.getRecordingTrackId();
+        Track.Id trackId = service.getRecordingTrackId();
 
         // when
-        long waypointId = service.insertWaypoint(null, null, null, null);
+        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
 
         // then
-        Assert.assertNotEquals(-1L, waypointId);
+        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());
+        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() >= 0);
+        assertTrue(track.getId().isValid());
         contentProviderUtils.insertTrack(track);
-        Assert.assertEquals(track.getId(), contentProviderUtils.getTrack(track.getId()).getId());
-        PreferencesUtils.setLong(context, R.string.recording_track_id_key, isRecording ? track.getId() : PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        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);
     }
 
     // NOTE: Do not use to create a track that is currently recording.
-    private void createDummyTrack(long id, long stopTime, boolean isRecording) {
+    private void createDummyTrack(Track.Id id, long stopTime, boolean isRecording) {
         Track dummyTrack = new Track();
         dummyTrack.setId(id);
         dummyTrack.setName("Dummy Track");

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;
@@ -23,6 +22,7 @@ import java.util.List;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
+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.provider.ContentProviderUtils;
@@ -32,6 +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>
@@ -89,7 +92,7 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_movingAccurate() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
         TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 15);
@@ -102,18 +105,18 @@ 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
     @Test
     public void testOnLocationChangedAsync_slowMovingAccurate() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
         TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 15);
@@ -126,11 +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
@@ -155,7 +158,7 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_idle() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
         TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 0);
@@ -168,20 +171,20 @@ 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
     @Test
     public void testOnLocationChangedAsync_idle_withMovement() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
         TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 15);
@@ -194,14 +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);
     }
 
 
@@ -209,7 +212,7 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_idle_withSensorData() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         service.setRemoteSensorManager(new BluetoothRemoteSensorManager(context) {
 
@@ -237,23 +240,23 @@ 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
     @Test
     public void testOnLocationChangedAsync_segment() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
         TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 0);
@@ -265,16 +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}.
  *
@@ -187,24 +192,24 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testIntegration_completeRecordingSession() throws TimeoutException {
-        List<Track> tracks = contentProviderUtils.getAllTracks();
-        Assert.assertTrue(tracks.isEmpty());
+        List<Track> tracks = contentProviderUtils.getTracks();
+        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.
-        long id = service.startNewTrack();
-        Assert.assertTrue(id >= 0);
-        Assert.assertTrue(service.isRecording());
-        Track track = contentProviderUtils.getTrack(id);
-        Assert.assertNotNull(track);
-        Assert.assertEquals(id, track.getId());
-        Assert.assertEquals(id, PreferencesUtils.getRecordingTrackId(context));
-        Assert.assertEquals(id, service.getRecordingTrackId());
+        Track.Id trackId = service.startNewTrack();
+        assertTrue(trackId.isValid());
+        assertTrue(service.isRecording());
+        Track track = contentProviderUtils.getTrack(trackId);
+        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();
@@ -227,14 +232,14 @@ public class TrackRecordingServiceTestLooper {
 
         // Stop the track. Validate if it has correct data.
         service.endCurrentTrack();
-        Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(-1L, service.getRecordingTrackId());
-        track = contentProviderUtils.getTrack(id);
-        Assert.assertNotNull(track);
-        Assert.assertEquals(id, track.getId());
+        assertFalse(service.isRecording());
+        assertNull(service.getRecordingTrackId());
+        track = contentProviderUtils.getTrack(trackId);
+        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/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.
@@ -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 = " With a current kilometer 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/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]);
     }
 
     /**
@@ -188,28 +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() {
+        assertEquals("4:59", StringUtils.getSpeedParts(context, 3.34, true, false).first);
+        assertEquals("5:00", StringUtils.getSpeedParts(context, 3.33, true, false).first);
+
+        assertEquals("11.99", StringUtils.getSpeedParts(context, 3.33, true, true).first);
+        assertEquals("7.45", StringUtils.getSpeedParts(context, 3.33, false, true).first);
+
+        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;
 
@@ -30,6 +29,9 @@ import java.util.Date;
 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}.
@@ -39,7 +41,7 @@ import de.dennisguse.opentracks.R;
 @RunWith(AndroidJUnit4.class)
 public class TrackNameUtilsTest {
 
-    private static final long TRACK_ID = 1L;
+    private static final Track.Id TRACK_ID = new Track.Id(1L);
     private static final long START_TIME = 1288213406000L;
 
     private static final Context CONTEXT = ApplicationProvider.getApplicationContext();
@@ -50,7 +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));
     }
 
     /**
@@ -60,7 +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));
     }
 
     /**
@@ -69,6 +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, 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 {
 
@@ -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/debug/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
-    <background android:drawable="@color/ic_launcher_debug_background" />
+    <background android:drawable="@color/ic_launcher_background" />
     <foreground android:drawable="@drawable/ic_logo_color_108dp" />
 </adaptive-icon>

src/debug/res/values/ic_launcher_background.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <color name="ic_launcher_debug_background">#8F0000</color>
+    <color name="ic_launcher_background">#8F0000</color>
 </resources>

src/debug/res/values/strings.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?><!--
-Copyright 2013 Google Inc.
+Copyright 2010 Google Inc.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -13,7 +13,6 @@ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
-<selector xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@drawable/ic_button_stop_pressed" android:state_pressed="true" />
-    <item android:drawable="@drawable/ic_button_stop" />
-</selector>
+<resources>
+    <string name="app_name">OpenTracks (Debug)</string>
+</resources>

src/main/AndroidManifest.xml

@@ -43,6 +43,7 @@ limitations under the License.
 
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.VIBRATE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
@@ -52,8 +53,8 @@ limitations under the License.
         android:allowBackup="false"
         android:hasFragileUserData="true"
         android:hardwareAccelerated="true"
-        android:icon="${applicationLogo}"
-        android:label="${applicationName}"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
         android:theme="@style/ThemeCustom">
 
         <activity android:name=".AboutActivity" />
@@ -75,42 +76,32 @@ limitations under the License.
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
-
+                <data android:mimeType="application/vnd.google-earth.kmz" />
                 <data
+                    android:scheme="content"
                     android:host="*"
-                    android:mimeType="application/vnd.google-earth.kmz" />
-                <data
-                    android:host="*"
-                    android:mimeType="*/*"
                     android:pathPattern="*kmz" />
             </intent-filter>
 
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
-
+                <data android:mimeType="application/vnd.google-earth.kml+xml" />
                 <data
+                    android:scheme="content"
                     android:host="*"
-                    android:mimeType="application/vnd.google-earth.kml+xml" />
-                <data
-                    android:host="*"
-                    android:mimeType="*/*"
                     android:pathPattern="*kml" />
             </intent-filter>
 
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
-
+                <data android:mimeType="application/gpx+xml" />
                 <data
+                    android:scheme="content"
                     android:host="*"
-                    android:mimeType="application/gpx+xml" />
-                <data
-                    android:host="*"
-                    android:mimeType="*/*"
                     android:pathPattern="*gpx" />
             </intent-filter>
-
         </activity>
 
         <activity android:name=".MarkerDetailActivity">

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

@@ -2,7 +2,6 @@ package de.dennisguse.opentracks;
 
 import android.os.Bundle;
 import android.view.Menu;
-import android.view.ViewGroup;
 import android.widget.TextView;
 
 import androidx.annotation.Nullable;
@@ -30,7 +29,7 @@ public class AboutActivity extends AbstractActivity {
         TextView textURL = findViewById(R.id.about_app_url);
         textURL.setText(getString(R.string.about_url, getString(R.string.app_web_url)));
 
-        ViewUtils.makeClickableLinks((ViewGroup) findViewById(android.R.id.content));
+        ViewUtils.makeClickableLinks(findViewById(android.R.id.content));
     }
 
     protected int getLayoutResId() {

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

@@ -18,6 +18,10 @@ package de.dennisguse.opentracks;
 
 import android.content.Intent;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment.ConfirmDeleteCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
@@ -55,17 +59,17 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
      *
      * @param trackIds the track ids
      */
-    protected void deleteTracks(long[] trackIds) {
+    protected void deleteTracks(Track.Id... trackIds) {
         ConfirmDeleteDialogFragment.showDialog(getSupportFragmentManager(), trackIds);
     }
 
     @Override
-    public void onConfirmDeleteDone(long[] trackIds) {
+    public void onConfirmDeleteDone(Track.Id... trackIds) {
         boolean stopRecording = false;
 
-        long recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
-        for (long trackId : trackIds) {
-            if (trackId == recordingTrackId) {
+        Track.Id recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
+        for (Track.Id trackId : trackIds) {
+            if (trackId.equals(recordingTrackId)) {
                 stopRecording = true;
                 break;
             }
@@ -75,7 +79,7 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
             getTrackRecordingServiceConnection().stopRecording(this, false);
         }
         Intent intent = IntentUtils.newIntent(this, TrackDeleteActivity.class);
-        intent.putExtra(TrackDeleteActivity.EXTRA_TRACK_IDS, trackIds);
+        intent.putParcelableArrayListExtra(TrackDeleteActivity.EXTRA_TRACK_IDS, new ArrayList<>(Arrays.asList(trackIds)));
         startActivityForResult(intent, DELETE_REQUEST_CODE);
         overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
     }

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

@@ -1,7 +1,6 @@
 package de.dennisguse.opentracks;
 
 import android.os.Bundle;
-import android.view.ViewGroup;
 
 import androidx.annotation.Nullable;
 
@@ -12,7 +11,7 @@ public class HelpActivity extends AbstractActivity {
     @Override
     public void onCreate(@Nullable Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        ViewUtils.makeClickableLinks((ViewGroup) findViewById(android.R.id.content));
+        ViewUtils.makeClickableLinks(findViewById(android.R.id.content));
     }
 
     @Override

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

@@ -48,32 +48,33 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
     private static final String TAG = MarkerDetailActivity.class.getSimpleName();
 
-    private List<Long> markerIds;
+    private List<Waypoint.Id> waypointIds;
 
     @Override
     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
 
-        long markerId = getIntent().getLongExtra(EXTRA_MARKER_ID, -1L);
-        if (markerId == -1L) {
+        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
+        if (waypointId == null) {
             Log.d(TAG, "invalid marker id");
             finish();
             return;
         }
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
-        Waypoint waypoint = contentProviderUtils.getWaypoint(markerId);
+        Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
 
-        markerIds = new ArrayList<>();
+        waypointIds = new ArrayList<>();
         int markerIndex = -1;
 
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(waypoint.getTrackId(), -1L, -1)) {
+        //TODO Load only waypointIds, not the whole waypoint
+        try (Cursor cursor = contentProviderUtils.getWaypointCursor(waypoint.getTrackId(), null, -1)) {
             if (cursor != null && cursor.moveToFirst()) {
                 for (int i = 0; i < cursor.getCount(); i++) {
                     Waypoint currentMarker = contentProviderUtils.createWaypoint(cursor);
-                    markerIds.add(currentMarker.getId());
-                    if (currentMarker.getId() == markerId) {
-                        markerIndex = markerIds.size() - 1;
+                    waypointIds.add(currentMarker.getId());
+                    if (waypointId.equals(currentMarker.getId())) {
+                        markerIndex = waypointIds.size() - 1;
                     }
 
                     cursor.moveToNext();
@@ -126,7 +127,7 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
         @Override
         @NonNull
         public Fragment getItem(int position) {
-            return MarkerDetailFragment.newInstance(markerIds.get(position));
+            return MarkerDetailFragment.newInstance(waypointIds.get(position));
         }
 
         @Nullable
@@ -137,7 +138,7 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
         @Override
         public int getCount() {
-            return markerIds.size();
+            return waypointIds.size();
         }
     }
 }

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

@@ -42,6 +42,7 @@ import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
 
+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;
@@ -64,7 +65,7 @@ public class MarkerEditActivity extends AbstractActivity {
     private static final int GALLERY_IMG_REQUEST_CODE = 7;
 
     private static final String TAG = MarkerEditActivity.class.getSimpleName();
-    private long trackId;
+    private Track.Id trackId;
     private TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
     private Waypoint waypoint;
 
@@ -85,8 +86,8 @@ public class MarkerEditActivity extends AbstractActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
-        long markerId = getIntent().getLongExtra(EXTRA_MARKER_ID, -1L);
+        trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
+        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
 
         hasCamera = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
 
@@ -111,7 +112,7 @@ public class MarkerEditActivity extends AbstractActivity {
         Button cancel = findViewById(R.id.marker_edit_cancel);
         cancel.setOnClickListener(v -> finish());
 
-        final boolean isNewMarker = markerId == -1L;
+        final boolean isNewMarker = waypointId == null;
 
         setTitle(isNewMarker ? R.string.menu_insert_marker : R.string.menu_edit);
         Button done = findViewById(R.id.marker_edit_done);
@@ -126,7 +127,7 @@ public class MarkerEditActivity extends AbstractActivity {
         });
 
         if (isNewMarker) {
-            int nextWaypointNumber = trackId == -1L ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId);
+            int nextWaypointNumber = trackId == null ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId);
             if (nextWaypointNumber == -1) {
                 nextWaypointNumber = 0;
             }
@@ -135,7 +136,7 @@ public class MarkerEditActivity extends AbstractActivity {
             waypointMarkerType.setText("");
             waypointDescription.setText("");
         } else {
-            waypoint = new ContentProviderUtils(this).getWaypoint(markerId);
+            waypoint = new ContentProviderUtils(this).getWaypoint(waypointId);
             if (waypoint == null) {
                 Log.d(TAG, "waypoint is null");
                 finish();
@@ -151,6 +152,9 @@ public class MarkerEditActivity extends AbstractActivity {
 
         if (savedInstanceState != null) {
             photoUri = savedInstanceState.getParcelable(BUNDLE_PHOTO_URI);
+            if (waypoint != null) {
+                waypoint.setPhotoUrl(photoUri != null ? photoUri.toString() : null);
+            }
         }
         if (photoUri != null) {
             setWaypointImageView(photoUri);
@@ -257,8 +261,8 @@ public class MarkerEditActivity extends AbstractActivity {
     /**
      * Returns the trackId. If trackId == -1 then get it from waypoint object.
      */
-    private long getTrackId() {
-        return trackId == -1 ? waypoint.getTrackId() : trackId;
+    private Track.Id getTrackId() {
+        return trackId == null ? waypoint.getTrackId() : trackId;
     }
 
     /**

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

@@ -32,10 +32,10 @@ import androidx.annotation.NonNull;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
-import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;
 
 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;
@@ -57,16 +57,11 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
 
     private static final String TAG = MarkerListActivity.class.getSimpleName();
 
-    private static final String[] PROJECTION = new String[]{WaypointsColumns._ID,
-            WaypointsColumns.NAME, WaypointsColumns.DESCRIPTION, WaypointsColumns.CATEGORY,
-            WaypointsColumns.TIME, WaypointsColumns.PHOTOURL,
-            WaypointsColumns.LATITUDE, WaypointsColumns.LONGITUDE};
-
     private ContentProviderUtils contentProviderUtils;
 
     private SharedPreferences sharedPreferences;
 
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId;
     private boolean recordingTrackPaused;
 
     private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
@@ -117,19 +112,19 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);
-        long trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
+        Track.Id trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
         recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
 
         contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
 
-        track = trackId != -1L ? contentProviderUtils.getTrack(trackId) : null;
+        track = trackId != null ? contentProviderUtils.getTrack(trackId) : null;
 
         listView = findViewById(R.id.marker_list);
         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, id);
+                    .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, new Waypoint.Id(id));
             startActivity(intent);
         });
         resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.list_item, null, 0) {
@@ -163,14 +158,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
             @NonNull
             @Override
             public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-                if (track != null) {
-                    return new CursorLoader(MarkerListActivity.this, WaypointsColumns.CONTENT_URI, PROJECTION,
-                            WaypointsColumns.TRACKID + "=?",
-                            new String[]{String.valueOf(track.getId())}, null);
-                } else {
-                    return new CursorLoader(MarkerListActivity.this, WaypointsColumns.CONTENT_URI, PROJECTION,
-                            null, null, null);
-                }
+                return ContentProviderUtils.getWaypointsLoader(MarkerListActivity.this, track != null ? track.getId() : null);
             }
 
             @Override
@@ -223,7 +211,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        insertMarkerMenuItem.setVisible(track != null && track.getId() == recordingTrackId && !recordingTrackPaused);
+        insertMarkerMenuItem.setVisible(track != null && track.getId().equals(recordingTrackId) && !recordingTrackPaused);
         return super.onPrepareOptionsMenu(menu);
     }
 
@@ -241,30 +229,35 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     /**
      * Handles a context item selection.
      *
-     * @param itemId    the menu item id
-     * @param markerIds the marker ids
+     * @param itemId          the menu item id
+     * @param longWaypointIds the marker ids
      * @return true if handled.
      */
-    private boolean handleContextItem(int itemId, long[] markerIds) {
+    private boolean handleContextItem(int itemId, long... longWaypointIds) {
+        Waypoint.Id[] waypointIds = new Waypoint.Id[longWaypointIds.length];
+        for (int i = 0; i < longWaypointIds.length; i++) {
+            waypointIds[i] = new Waypoint.Id(longWaypointIds[i]);
+        }
+
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
-                if (markerIds.length == 1) {
-                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(markerIds[0]));
+                if (waypointIds.length == 1) {
+                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(waypointIds[0]));
                 }
                 return true;
             case R.id.list_context_menu_edit:
-                if (markerIds.length == 1) {
+                if (waypointIds.length == 1) {
                     intent = IntentUtils.newIntent(this, MarkerEditActivity.class)
-                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerIds[0]);
+                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, waypointIds[0]);
                     startActivity(intent);
                 }
                 return true;
             case R.id.list_context_menu_delete:
-                if (markerIds.length > 1 && markerIds.length == listView.getCount()) {
-                    markerIds = new long[]{-1L};
+                if (waypointIds.length > 1 && waypointIds.length == listView.getCount()) {
+                    waypointIds = null;
                 }
-                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), markerIds);
+                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), waypointIds);
                 return true;
             case R.id.list_context_menu_select_all:
                 for (int i = 0; i < listView.getCount(); i++) {

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

@@ -97,7 +97,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
     private boolean metricUnits = true;
 
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId;
 
     private boolean recordingTrackPaused;
 
@@ -165,7 +165,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
         contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(null);
+        trackRecordingServiceConnection = new TrackRecordingServiceConnection();
         searchEngine = new SearchEngine(contentProviderUtils);
 
         arrayAdapter = new ArrayAdapter<Map<String, Object>>(this, R.layout.list_item, R.id.list_item_name) {
@@ -203,7 +203,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         listView.setEmptyView(findViewById(R.id.search_list_empty));
         listView.setOnItemClickListener((parent, view, position, id) -> {
             Map<String, Object> item = arrayAdapter.getItem(position);
-            Long trackId = (Long) item.get(TRACK_ID_FIELD);
+            Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
             Long markerId = (Long) item.get(MARKER_ID_FIELD);
             Intent intent = IntentUtils.newIntent(SearchListActivity.this, TrackRecordedActivity.class);
             if (markerId != null) {
@@ -270,22 +270,22 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
             return false;
         }
         Map<String, Object> item = arrayAdapter.getItem(positions[0]);
-        Long trackId = (Long) item.get(TRACK_ID_FIELD);
-        Long markerId = (Long) item.get(MARKER_ID_FIELD);
+        Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
+        Waypoint.Id waypointId = (Waypoint.Id) item.get(MARKER_ID_FIELD);
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
                 IntentUtils.showCoordinateOnMap(this, (double) item.get(MARKER_LATITUDE_FIELD), (double) item.get(MARKER_LONGITUDE_FIELD), item.get(NAME_FIELD) + "");
                 return true;
             case R.id.list_context_menu_share:
-                intent = IntentUtils.newShareFileIntent(this, new long[]{trackId});
+                intent = IntentUtils.newShareFileIntent(this, trackId);
                 intent = Intent.createChooser(intent, null);
                 startActivity(intent);
                 return true;
             case R.id.list_context_menu_edit:
-                if (markerId != null) {
+                if (waypointId != null) {
                     intent = IntentUtils.newIntent(this, MarkerEditActivity.class)
-                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerId);
+                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, waypointId);
                 } else {
                     intent = IntentUtils.newIntent(this, TrackEditActivity.class)
                             .putExtra(TrackEditActivity.EXTRA_TRACK_ID, trackId);
@@ -296,10 +296,10 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                 finish();
                 return true;
             case R.id.list_context_menu_delete:
-                if (markerId != null) {
-                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), new long[]{markerId});
+                if (waypointId != null) {
+                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), waypointId);
                 } else {
-                    deleteTracks(new long[]{trackId});
+                    deleteTracks(trackId);
                 }
                 return true;
             default:
@@ -331,7 +331,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
      * @param textQuery the query
      */
     private void doSearch(String textQuery) {
-        SearchQuery query = new SearchQuery(textQuery, null, -1L, System.currentTimeMillis());
+        SearchQuery query = new SearchQuery(textQuery, null, null, System.currentTimeMillis());
         SortedSet<ScoredResult> scoredResults = searchEngine.search(query);
         final List<Map<String, Object>> displayResults = prepareResultsforDisplay(scoredResults);
 
@@ -372,8 +372,8 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
         //TODO: It may be more appropriate to obtain the track name as a join in the retrieval phase of the searchable.
         String trackName = null;
-        long trackId = waypoint.getTrackId();
-        if (trackId != -1L) {
+        Track.Id trackId = waypoint.getTrackId();
+        if (!trackId.isValid()) {
             Track track = contentProviderUtils.getTrack(trackId);
             if (track != null) {
                 trackName = track.getName();

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

@@ -8,7 +8,9 @@ import android.util.Pair;
 
 import androidx.appcompat.app.AppCompatActivity;
 
-import de.dennisguse.opentracks.content.data.TrackPointsColumns;
+import java.util.Set;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ShareContentProvider;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.util.IntentDashboardUtils;
@@ -26,9 +28,9 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
 
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        long[] trackIds = IntentDashboardUtils.extractTrackIdsFromIntent(getIntent());
+        Set<Track.Id> trackIds = IntentDashboardUtils.extractTrackIdsFromIntent(getIntent());
 
-        showTrackTrackfileFormat(this, trackFileFormat, trackIds);
+        showTrackfileFormat(this, trackFileFormat, trackIds);
 
         finish();
     }
@@ -39,14 +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, long[] trackIds) {
-        if (trackIds.length == 0) {
+    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[0]);
+
         Pair<Uri, String> uriAndMime = ShareContentProvider.createURI(trackIds, "SharingTrack", trackFileFormat);
         intent.setDataAndType(uriAndMime.first, uriAndMime.second);
 

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

@@ -32,6 +32,11 @@ public class Startup extends Application {
             PreferencesUtils.setString(this, R.string.stats_units_key, statsUnits);
         }
 
+        //TODO Workaround to reset recordingTrackId on app startup as the TrackRecordingService (likely) crashed.
+        if (PreferencesUtils.isRecording(this)) {
+            Log.e(TAG, "Reset recordingTrackId; likely the TrackRecordingService crashed.");
+            PreferencesUtils.setLong(this, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        }
 
         //In debug builds: show thread and VM warnings.
         if (BuildConfig.DEBUG) {

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

@@ -16,15 +16,24 @@
 
 package de.dennisguse.opentracks;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.graphics.drawable.Drawable;
 import android.os.Handler;
+import android.view.Gravity;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.ImageButton;
 import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.core.content.ContextCompat;
 
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 
@@ -46,6 +55,7 @@ public class TrackController {
     private final ImageButton recordImageButton;
     private final ImageButton stopImageButton;
     private final boolean alwaysShow;
+    private ButtonDelay buttonDelay;
 
     private boolean isRecording;
     private boolean isPaused;
@@ -65,6 +75,7 @@ public class TrackController {
         }
     };
 
+    @SuppressLint("ClickableViewAccessibility")
     TrackController(Activity activity, TrackRecordingServiceConnection trackRecordingServiceConnection, boolean alwaysShow, OnClickListener recordListener, OnClickListener stopListener) {
         this.activity = activity;
         this.trackRecordingServiceConnection = trackRecordingServiceConnection;
@@ -75,10 +86,91 @@ public class TrackController {
         totalTimeTextView = activity.findViewById(R.id.track_controller_total_time);
 
         recordImageButton = activity.findViewById(R.id.track_controller_record);
-        recordImageButton.setOnClickListener(recordListener);
+        recordImageButton.setOnTouchListener((view, motionEvent) -> onRecordTouch(activity, recordListener, motionEvent));
 
         stopImageButton = activity.findViewById(R.id.track_controller_stop);
-        stopImageButton.setOnClickListener(stopListener);
+        stopImageButton.setOnTouchListener((view, motionEvent) -> onStopTouch(activity, stopListener, motionEvent));
+    }
+
+    private boolean onRecordTouch(final Activity activity, final OnClickListener recordListener, final MotionEvent motionEvent) {
+        if (isRecording && !isPaused) {
+            if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+                buttonDelay = new ButtonDelay(activity, recordImageButton, R.drawable.ic_button_pause_anim, R.string.hold_to_pause, recordListener);
+                new Thread(buttonDelay).start();
+                return true;
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP ) {
+                recordImageButton.setImageResource(R.drawable.ic_button_pause);
+                if (buttonDelay != null) {
+                    buttonDelay.canceled = true;
+                }
+                return true;
+            }
+        } else if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+            recordListener.onClick(null);
+            return true;
+        }
+        return false;
+    }
+
+    private boolean onStopTouch(final Activity activity, final OnClickListener stopListener, final MotionEvent motionEvent) {
+        if (isRecording) {
+            if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+                buttonDelay = new ButtonDelay(activity, stopImageButton, R.drawable.ic_button_stop_anim, R.string.hold_to_stop, stopListener);
+                new Thread(buttonDelay).start();
+                return true;
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP ) {
+                stopImageButton.setImageResource(R.drawable.ic_button_stop);
+                if (buttonDelay != null) {
+                    buttonDelay.canceled = true;
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static class ButtonDelay implements Runnable {
+
+        private boolean canceled = false;
+
+        private final ImageButton imageButton;
+        private final Activity activity;
+        private final OnClickListener clickListener;
+        private final int delayMillis;
+        private final Drawable drawable;
+        private final int delayMessageId;
+
+        private ButtonDelay(final Activity activity, final ImageButton imageButton, final int animDrawableId, final int delayMessageId, final OnClickListener clickListener) {
+            this.activity = activity;
+            this.clickListener = clickListener;
+            this.delayMillis = activity.getResources().getInteger(R.integer.buttonDelayMillis);
+            this.imageButton = imageButton;
+            this.drawable = ContextCompat.getDrawable(activity, animDrawableId);
+            this.delayMessageId = delayMessageId;
+        }
+
+        @Override
+        public void run() {
+            activity.runOnUiThread(()->{
+                imageButton.setImageDrawable(drawable);
+                if (drawable instanceof AnimatedVectorDrawable) {
+                    ((AnimatedVectorDrawable) drawable).start();
+                }
+                ActivityUtils.vibrate(activity, 150);
+                ActivityUtils.toast(activity, delayMessageId, Toast.LENGTH_SHORT, Gravity.TOP);
+            });
+
+            try {
+                Thread.sleep(delayMillis);
+            } catch (InterruptedException ignored) {
+            }
+            if (!canceled) {
+                activity.runOnUiThread(()-> {
+                    clickListener.onClick(null);
+                    ActivityUtils.vibrate(activity, 1000);
+                });
+            }
+        }
     }
 
     public void update(boolean recording, boolean paused) {
@@ -95,10 +187,10 @@ public class TrackController {
             return;
         }
 
-        recordImageButton.setImageResource(isRecording && !isPaused ? R.drawable.button_pause : R.drawable.button_record);
+        recordImageButton.setImageResource(isRecording && !isPaused ? R.drawable.ic_button_pause : R.drawable.button_record);
         recordImageButton.setContentDescription(activity.getString(isRecording && !isPaused ? R.string.image_pause : R.string.image_record));
 
-        stopImageButton.setImageResource(isRecording ? R.drawable.button_stop : R.drawable.ic_button_stop_disabled);
+        stopImageButton.setImageResource(isRecording ? R.drawable.ic_button_stop : R.drawable.ic_button_stop_disabled);
         stopImageButton.setEnabled(isRecording);
 
         statusTextView.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);

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

@@ -21,6 +21,9 @@ import android.os.Bundle;
 import android.os.PowerManager;
 import android.view.View;
 
+import java.util.List;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.SystemUtils;
 
@@ -33,7 +36,7 @@ public class TrackDeleteActivity extends AbstractActivity {
 
     public static final String EXTRA_TRACK_IDS = "track_ids";
 
-    private long[] trackIds;
+    private List<Track.Id> trackIds;
 
     private Thread deleteThread;
 
@@ -44,13 +47,13 @@ public class TrackDeleteActivity extends AbstractActivity {
         setResult(RESULT_CANCELED);
 
         Intent intent = getIntent();
-        trackIds = intent.getLongArrayExtra(EXTRA_TRACK_IDS);
+        trackIds = intent.getParcelableArrayListExtra(EXTRA_TRACK_IDS);
         deleteThread = new Thread(() -> {
             ContentProviderUtils contentProviderUtils = new ContentProviderUtils(TrackDeleteActivity.this);
 
             PowerManager.WakeLock wakeLock = SystemUtils.acquireWakeLock(TrackDeleteActivity.this, null);
 
-            for (long id : trackIds) {
+            for (Track.Id id : trackIds) {
                 if (Thread.interrupted()) {
                     break;
                 }

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

@@ -64,9 +64,9 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
 
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(null);
-        long trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
-        if (trackId == -1L) {
+        trackRecordingServiceConnection = new TrackRecordingServiceConnection();
+        Track.Id trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
+        if (!trackId.isValid()) {
             Log.e(TAG, "invalid trackId");
             finish();
             return;

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

@@ -24,6 +24,7 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
+import android.graphics.drawable.AnimatedVectorDrawable;
 import android.location.LocationManager;
 import android.os.Bundle;
 import android.provider.Settings;
@@ -42,24 +43,23 @@ import androidx.core.app.ActivityCompat;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
-import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;
 
+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.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
+import de.dennisguse.opentracks.services.handlers.GpsStatusValue;
 import de.dennisguse.opentracks.settings.SettingsActivity;
 import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentDashboardUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.ServiceUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
-import de.dennisguse.opentracks.util.TrackUtils;
 
 /**
  * An activity displaying a list of tracks.
@@ -70,10 +70,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     private static final String TAG = TrackListActivity.class.getSimpleName();
 
-    private static final String[] PROJECTION = new String[]{TracksColumns._ID, TracksColumns.NAME,
-            TracksColumns.DESCRIPTION, TracksColumns.CATEGORY, TracksColumns.STARTTIME,
-            TracksColumns.TOTALDISTANCE, TracksColumns.TOTALTIME, TracksColumns.ICON};
-
     // The following are set in onCreate
     private ContentProviderUtils contentProviderUtils;
     private SharedPreferences sharedPreferences;
@@ -81,12 +77,12 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     private TrackController trackController;
     private ListView listView;
     private ResourceCursorAdapter resourceCursorAdapter;
+    private GpsStatusValue gpsStatusValue;
 
     private final LoaderCallbacks<Cursor> loaderCallbacks = new LoaderCallbacks<Cursor>() {
         @Override
         public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-            return new CursorLoader(TrackListActivity.this, TracksColumns.CONTENT_URI, PROJECTION, null,
-                    null, TrackUtils.TRACK_SORT_ORDER);
+            return ContentProviderUtils.getTracksCursorLoader(TrackListActivity.this);
         }
 
         @Override
@@ -102,7 +98,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     // Preferences
     private boolean metricUnits = true;
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId = null;
 
     // Callback when an item is selected in the contextual action mode
     private final ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
@@ -123,8 +119,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     private boolean recordingTrackPaused;
 
-    private final OnSharedPreferenceChangeListener
-            sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
+    private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
             if (PreferencesUtils.isKey(TrackListActivity.this, R.string.stats_units_key, key)) {
@@ -162,28 +157,37 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         }
     };
 
-    private boolean startGps = false; // true to start gps
-
     // Callback when the trackRecordingServiceConnection binding changes.
     private final Runnable bindChangedCallback = new Runnable() {
         @Override
         public void run() {
-            // After binding changes (e.g., becomes available), update the total time in trackController.
-            runOnUiThread(() -> trackController.update(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused));
+            boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
 
-            if (!startGps) {
-                return;
-            }
+            // After binding changes (e.g., becomes available), update the total time in trackController.
+            runOnUiThread(() -> trackController.update(isRecording, recordingTrackPaused));
 
             TrackRecordingServiceInterface service = trackRecordingServiceConnection.getServiceIfBound();
             if (service == null) {
                 Log.d(TAG, "service not available to start gps or a new recording");
+                gpsStatusValue = GpsStatusValue.GPS_NONE;
                 return;
             }
-            if (startGps) {
-                service.startGps();
-                startGps = false;
+
+            // Get GPS status and listen GPS status changes.
+            gpsStatusValue = service.getGpsStatus();
+            updateGpsMenuItem(true, isRecording);
+            service.addListener(newStatus -> {
+                gpsStatusValue = newStatus;
+                updateGpsMenuItem(true, isRecording);
+            });
+
+            if (isGpsStarted()) {
+                return;
             }
+
+            service.startGps();
+            gpsStatusValue = GpsStatusValue.GPS_ENABLED;
+            updateGpsMenuItem(true, isRecording);
         }
     };
 
@@ -212,6 +216,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        gpsStatusValue = GpsStatusValue.GPS_NONE;
+
         recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
 
         contentProviderUtils = new ContentProviderUtils(this);
@@ -232,14 +238,14 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         listView.setEmptyView(findViewById(R.id.track_list_empty_view));
         listView.setOnItemClickListener((parent, view, position, trackId) -> {
             Intent newIntent;
-            if (trackId == recordingTrackId) {
+            if (trackId == recordingTrackId.getId()) {
                 // Is recording -> open record activity.
                 newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordingActivity.class)
-                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
+                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, new Track.Id(trackId));
             } else {
                 // Not recording -> open detail activity.
                 newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordedActivity.class)
-                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
+                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, new Track.Id(trackId));
             }
             startActivity(newIntent);
         });
@@ -256,7 +262,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 int categoryIndex = cursor.getColumnIndex(TracksColumns.CATEGORY);
                 int descriptionIndex = cursor.getColumnIndex(TracksColumns.DESCRIPTION);
 
-                long trackId = cursor.getLong(idIndex);
+                Track.Id trackId = new Track.Id(cursor.getLong(idIndex));
                 boolean isRecording = trackId == recordingTrackId;
                 String icon = cursor.getString(iconIndex);
                 int iconId = TrackIconUtils.getIconDrawable(icon);
@@ -346,7 +352,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        boolean isGpsStarted = ServiceUtils.isTrackRecordingServiceRunning(this);
+        boolean isGpsStarted = isGpsStarted();
         boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
         updateMenuItems(isGpsStarted, isRecording);
 
@@ -366,10 +372,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                     intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                     startActivity(intent);
                 } else {
-                    startGps = !ServiceUtils.isTrackRecordingServiceRunning(this);
-
                     // Invoke trackRecordingService
-                    if (startGps) {
+                    if (!isGpsStarted()) {
                         trackRecordingServiceConnection.startAndBind(this);
                         bindChangedCallback.run();
                     } else {
@@ -425,6 +429,10 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         // Do nothing
     }
 
+    private boolean isGpsStarted() {
+        return gpsStatusValue != GpsStatusValue.GPS_NONE && gpsStatusValue != GpsStatusValue.GPS_DISABLED;
+    }
+
     private void requestGPSPermissions() {
         if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
             ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, GPS_REQUEST_CODE);
@@ -432,17 +440,30 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     }
 
     /**
-     * Updates the menu items.
+     * Updates the menu items with not fixed icon for gps option.
      *
      * @param isGpsStarted true if gps is started
      * @param isRecording  true if recording
      */
     private void updateMenuItems(boolean isGpsStarted, boolean isRecording) {
+        updateGpsMenuItem(isGpsStarted, isRecording);
+    }
+
+    /**
+     * Updates the menu items with the icon specified.
+     *
+     * @param isGpsStarted true if gps is started
+     * @param isRecording  true if recording
+     */
+    private void updateGpsMenuItem(boolean isGpsStarted, boolean isRecording) {
         if (startGpsMenuItem != null) {
             startGpsMenuItem.setVisible(!isRecording);
             if (!isRecording) {
                 startGpsMenuItem.setTitle(isGpsStarted ? R.string.menu_stop_gps : R.string.menu_start_gps);
-                startGpsMenuItem.setIcon(isGpsStarted ? R.drawable.ic_gps_fixed_24dp : R.drawable.ic_gps_off_24dp);
+                startGpsMenuItem.setIcon(isGpsStarted ? gpsStatusValue.icon : R.drawable.ic_gps_off_24dp);
+                if (startGpsMenuItem.getIcon() instanceof AnimatedVectorDrawable) {
+                    ((AnimatedVectorDrawable) startGpsMenuItem.getIcon()).start();
+                }
             }
         }
     }
@@ -450,15 +471,20 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     /**
      * Handles a context item selection.
      *
-     * @param itemId   the menu item id
-     * @param trackIds the track ids
+     * @param itemId       the menu item id
+     * @param longTrackIds the track ids
      * @return true if handled.
      */
-    private boolean handleContextItem(int itemId, long[] trackIds) {
+    private boolean handleContextItem(int itemId, long... longTrackIds) {
+        Track.Id[] trackIds = new Track.Id[longTrackIds.length];
+        for (int i = 0; i < longTrackIds.length; i++) {
+            trackIds[i] = new Track.Id(longTrackIds[i]);
+        }
+
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, trackIds);
+                IntentDashboardUtils.startDashboard(this, false, trackIds);
                 return true;
             case R.id.list_context_menu_share:
                 intent = IntentUtils.newShareFileIntent(this, trackIds);

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

@@ -24,6 +24,7 @@ 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;
 
@@ -36,6 +37,7 @@ 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.IntervalsRecordedFragment;
 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 long 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 != -1L) {
-            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, new long[]{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, 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(new long[]{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.getLongExtra(EXTRA_TRACK_ID, -1L);
+        Track.Id trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
 
-        long markerId = intent.getLongExtra(EXTRA_MARKER_ID, -1L);
-        if (markerId != -1L) {
+        Waypoint.Id waypointId = intent.getParcelableExtra(EXTRA_MARKER_ID);
+        if (waypointId != null) {
             // Use the trackId from the marker
-            Waypoint waypoint = contentProviderUtils.getWaypoint(markerId);
+            Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
             if (waypoint == null) {
                 finish();
                 return;
@@ -251,10 +217,12 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
             trackId = waypoint.getTrackId();
         }
 
-        if (trackId == -1L) {
+        if (trackId == null) {
             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 IntervalsRecordedFragment.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.IntervalsRecordingFragment;
 import de.dennisguse.opentracks.fragments.StatisticsRecordingFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
@@ -60,7 +61,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     private TrackController trackController;
 
     // Initialized from Intent; if a new track recording is started, a new TrackId will be provided by TrackRecordingService
-    private long trackId;
+    private Track.Id trackId;
 
     // Preferences
     private boolean recordingTrackPaused;
@@ -78,7 +79,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             }
             if (!service.isRecording()) {
                 // Starts or resumes a track.
-                if (trackId == -1L) {
+                if (trackId == null) {
                     // trackId isn't initialized -> leads a new recording.
                     trackId = service.startNewTrack();
                 } else {
@@ -110,6 +111,9 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.stats_keep_screen_on_while_recording_key, key)) {
                 setScreenOnPolicy();
             }
+            if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.stats_fullscreen_while_recording_key, key)) {
+                setFullscreenPolicy();
+            }
 
             if (key == null) return;
 
@@ -158,13 +162,15 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         super.onCreate(savedInstanceState);
         contentProviderUtils = new ContentProviderUtils(this);
 
-        trackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        trackId = null;
         if (savedInstanceState != null) {
             //Activity was recreated.
-            trackId = savedInstanceState.getLong(EXTRA_TRACK_ID, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+            trackId = savedInstanceState.getParcelable(EXTRA_TRACK_ID);
         } else {
-            trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
-            if (trackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT && contentProviderUtils.getTrack(trackId) == null) {
+            // 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.");
                 finish();
             }
         }
@@ -176,7 +182,7 @@ 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) {
@@ -190,12 +196,12 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     public void onAttachedToWindow() {
         setLockscreenPolicy();
         setScreenOnPolicy();
+        setFullscreenPolicy();
         super.onAttachedToWindow();
     }
 
     private void setLockscreenPolicy() {
-        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackRecordingActivity.this)
-                && PreferencesUtils.isRecording(this);
+        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackRecordingActivity.this);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
             setShowWhenLocked(showOnLockScreen);
@@ -207,8 +213,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     }
 
     private void setScreenOnPolicy() {
-        boolean keepScreenOn = PreferencesUtils.shouldKeepScreenOn(TrackRecordingActivity.this)
-                && PreferencesUtils.isRecording(this);
+        boolean keepScreenOn = PreferencesUtils.shouldKeepScreenOn(TrackRecordingActivity.this);
 
         if (keepScreenOn) {
             getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
@@ -217,6 +222,16 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         }
     }
 
+    private void setFullscreenPolicy() {
+        boolean keepScreenOn = PreferencesUtils.shouldUseFullscreen(TrackRecordingActivity.this);
+
+        if (keepScreenOn) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        } else {
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        }
+    }
+
     @Override
     protected void onStart() {
         super.onStart();
@@ -235,7 +250,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         // Update UI
         this.invalidateOptionsMenu();
 
-        if (trackId != -1L) {
+        if (trackId != null) {
             trackDataHub.loadTrack(trackId);
             trackController.onResume(true, recordingTrackPaused);
         }
@@ -253,7 +268,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putInt(CURRENT_TAB_TAG_KEY, pager.getCurrentItem());
-        outState.putLong(EXTRA_TRACK_ID, trackId);
+        outState.putParcelable(EXTRA_TRACK_ID, trackId);
     }
 
     @Override
@@ -302,7 +317,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                 startActivity(intent);
                 return true;
             case R.id.track_detail_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, trackId);
+                IntentDashboardUtils.startDashboard(this, true, trackId);
                 return true;
             case R.id.track_detail_markers:
                 intent = IntentUtils.newIntent(this, MarkerListActivity.class)
@@ -359,7 +374,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
 
         @Override
         public int getCount() {
-            return 3;
+            return 4;
         }
 
         @NonNull
@@ -367,10 +382,12 @@ 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 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);
@@ -383,8 +400,10 @@ 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);

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

@@ -0,0 +1,68 @@
+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 boolean metricUnits;
+    private float sumDistance_m = 0f;
+
+    public IntervalStatisticsAdapter(Context context, List<IntervalStatistics.Interval> intervalList) {
+        super(context, R.layout.interval_stats_list_item, intervalList);
+        metricUnits = PreferencesUtils.isMetricUnits(context);
+    }
+
+    @NonNull
+    @Override
+    public View getView(int position, @Nullable View intervalView, @NonNull ViewGroup parent) {
+        IntervalStatistics.Interval interval = getItem(position);
+        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();
+        }
+
+        sumDistance_m += 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;
+    }
+
+    private static class ViewHolder {
+        private TextView distance;
+        private TextView speed;
+        private TextView pace;
+    }
+}

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

@@ -43,7 +43,7 @@ public class ChartPoint {
             elevation *= UnitConversions.M_TO_FT;
         }
 
-        speed = trackStatisticsUpdater.getSmoothedSpeed() * UnitConversions.MS_TO_KMH;
+        speed = trackStatisticsUpdater.getSmoothedSpeed() * UnitConversions.MPS_TO_KMH;
         if (!metricUnits) {
             speed *= UnitConversions.KM_TO_MI;
         }

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

@@ -185,7 +185,7 @@ public class DescriptionGenerator {
      */
     @VisibleForTesting
     void writeSpeed(double speed, StringBuilder builder, int resId, String lineBreak) {
-        double speedInKmHr = speed * UnitConversions.MS_TO_KMH;
+        double speedInKmHr = speed * UnitConversions.MPS_TO_KMH;
         double speedInMiHr = speedInKmHr * UnitConversions.KM_TO_MI;
         builder.append(context.getString(resId, speedInKmHr, speedInMiHr));
         builder.append(lineBreak);

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

@@ -123,8 +123,8 @@ public class SearchEngine {
         }
 
         // Finally, use arbitrary ordering, by ID.
-        long id1 = r1.track != null ? r1.track.getId() : r1.waypoint.getId();
-        long id2 = r2.track != null ? r2.track.getId() : r2.waypoint.getId();
+        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 idDiff = id2 - id1;
         return Long.signum(idDiff);
     };
@@ -290,7 +290,7 @@ public class SearchEngine {
         score *= getTimeBoost(query, location.getTime());
 
         // Score waypoints in the currently-selected track higher (searching inside the current track).
-        if (query.currentTrackId != -1 && waypoint.getTrackId() == query.currentTrackId) {
+        if (waypoint.getTrackId() != null && waypoint.getTrackId().equals(query.currentTrackId)) {
             score *= CURRENT_TRACK_WAYPOINT_PROMOTION;
         }
 
@@ -382,10 +382,10 @@ public class SearchEngine {
     public static class SearchQuery {
         final String textQuery;
         final Location currentLocation;
-        final long currentTrackId;
+        final Track.Id currentTrackId;
         final long currentTimestamp;
 
-        public SearchQuery(String textQuery, Location currentLocation, long currentTrackId, long currentTimestamp) {
+        public SearchQuery(String textQuery, Location currentLocation, Track.Id currentTrackId, long currentTimestamp) {
             this.textQuery = textQuery.toLowerCase(Locale.getDefault());
             this.currentLocation = currentLocation;
             this.currentTrackId = currentTrackId;
@@ -417,8 +417,8 @@ public class SearchEngine {
         @Override
         public String toString() {
             return "ScoredResult ["
-                    + (track != null ? ("trackId=" + track.getId() + ", ") : "")
-                    + (waypoint != null ? ("wptId=" + waypoint.getId() + ", ") : "")
+                    + (track != null ? ("trackId=" + track.getId().getId() + ", ") : "")
+                    + (waypoint != null ? ("wptId=" + waypoint.getId().getId() + ", ") : "")
                     + "score=" + score + "]";
         }
     }

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

@@ -25,6 +25,7 @@ import android.os.Handler;
 import android.os.HandlerThread;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;
 
 import java.util.Collections;
@@ -78,8 +79,8 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
     private Handler handler;
 
     // Preference values
-    private long selectedTrackId;
-    private long recordingTrackId;
+    private Track.Id selectedTrackId;
+    private Track.Id recordingTrackId;
     private boolean recordingTrackPaused;
 
     // Track points sampling state
@@ -174,10 +175,10 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
         handler = null;
     }
 
-    public void loadTrack(final long trackId) {
+    public void loadTrack(final @NonNull Track.Id trackId) {
         runInHandlerThread(() -> {
-            if (trackId == selectedTrackId) {
-                Log.i(TAG, "Not reloading track " + trackId);
+            if (trackId.equals(selectedTrackId)) {
+                Log.i(TAG, "Not reloading track " + trackId.getId());
                 return;
             }
             selectedTrackId = trackId;
@@ -212,14 +213,14 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
      * Returns true if the selected track is recording.
      */
     public boolean isSelectedTrackRecording() {
-        return selectedTrackId == recordingTrackId && PreferencesUtils.isRecording(recordingTrackId);
+        return selectedTrackId != null && selectedTrackId.equals(recordingTrackId) && PreferencesUtils.isRecording(recordingTrackId);
     }
 
     /**
      * Returns true if the selected track is paused.
      */
     public boolean isSelectedTrackPaused() {
-        return selectedTrackId == recordingTrackId && recordingTrackPaused;
+        return selectedTrackId != null && selectedTrackId.equals(recordingTrackId) && recordingTrackPaused;
     }
 
     @Override
@@ -311,7 +312,7 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
             trackDataListener.clearWaypoints();
         }
 
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(selectedTrackId, -1L, MAX_DISPLAYED_WAYPOINTS)) {
+        try (Cursor cursor = contentProviderUtils.getWaypointCursor(selectedTrackId, null, MAX_DISPLAYED_WAYPOINTS)) {
             if (cursor != null && cursor.moveToFirst()) {
                 do {
                     Waypoint waypoint = contentProviderUtils.createWaypoint(cursor);
@@ -356,6 +357,11 @@ public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeL
         long localLastSeenTrackPointIdId = updateSamplingState ? lastSeenTrackPointId : -1L;
         long maxPointId = updateSamplingState ? -1L : lastSeenTrackPointId;
 
+        if (selectedTrackId == null) {
+            Log.w(TAG, "This should not happen, but it does"); //TODO
+            return;
+        }
+
         long lastTrackPointId = contentProviderUtils.getLastTrackPointId(selectedTrackId);
         int samplingFrequency = -1;
         boolean includeNextPoint = false;

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

@@ -16,9 +16,17 @@
 
 package de.dennisguse.opentracks.content.data;
 
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.Objects;
 import java.util.UUID;
 
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.util.PreferencesUtils;
 
 /**
  * A track.
@@ -28,7 +36,7 @@ import de.dennisguse.opentracks.stats.TrackStatistics;
  */
 public class Track {
 
-    private long id = -1L;
+    private Track.Id id;
     private UUID uuid = UUID.randomUUID();
 
     private String name = "";
@@ -42,11 +50,15 @@ public class Track {
     public Track() {
     }
 
-    public long getId() {
+    /**
+     * May be null if the track was not loaded from the database.
+     */
+    public @Nullable
+    Id getId() {
         return id;
     }
 
-    public void setId(long id) {
+    public void setId(Id id) {
         this.id = id;
     }
 
@@ -97,4 +109,66 @@ public class Track {
     public void setTrackStatistics(TrackStatistics trackStatistics) {
         this.trackStatistics = trackStatistics;
     }
+
+    public static class Id implements Parcelable {
+
+        private final long id;
+
+        public Id(long id) {
+            this.id = id;
+        }
+
+        public Id(@NonNull String id) {
+            this(Long.parseLong(id));
+        }
+
+        //TOOD Limit visibility to TrackRecordingService / ContentProvider
+        public long getId() {
+            return id;
+        }
+
+        @Deprecated //TODO Use a Track.Id of null instead
+        public boolean isValid() {
+            return id != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            Id id1 = (Id) o;
+            return id == id1.id;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(id);
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @NonNull
+        @Override
+        public String toString() {
+            throw new RuntimeException("Not supported");
+        }
+
+        @Override
+        public void writeToParcel(Parcel parcel, int i) {
+            parcel.writeLong(id);
+        }
+
+        public static final Parcelable.Creator<Track.Id> CREATOR = new Parcelable.Creator<Track.Id>() {
+            public Track.Id createFromParcel(Parcel in) {
+                return new Track.Id(in.readLong());
+            }
+
+            public Track.Id[] newArray(int size) {
+                return new Track.Id[size];
+            }
+        };
+    }
 }

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

@@ -33,7 +33,7 @@ public interface TrackPointsColumns extends BaseColumns {
     Uri CONTENT_URI_BY_TRACKID = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME + "/trackid");
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.trackpoint";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.trackpoint";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String TRACKID = "trackid";

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

@@ -32,7 +32,7 @@ public interface TracksColumns extends BaseColumns {
     Uri CONTENT_URI = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME);
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.track";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.track";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String UUID = "uuid";

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

@@ -18,10 +18,17 @@ package de.dennisguse.opentracks.content.data;
 
 import android.location.Location;
 import android.net.Uri;
+import android.os.Parcel;
+import android.os.Parcelable;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
+import java.util.Objects;
+
+import de.dennisguse.opentracks.util.PreferencesUtils;
+
 /**
  * A waypoint.
  *
@@ -30,12 +37,12 @@ import androidx.annotation.VisibleForTesting;
  */
 public final class Waypoint {
 
-    private long id = -1L;
+    private Id id;
     private String name = "";
     private String description = "";
     private String category = "";
     private String icon = "";
-    private long trackId = -1L;
+    private Track.Id trackId;
     private double length = 0.0;
     private long duration = 0;
     private Location location;
@@ -51,7 +58,7 @@ public final class Waypoint {
         this.location = location;
     }
 
-    public Waypoint(String name, String description, String category, String icon, long trackId, double length, long duration, @NonNull Location location, String photoUrl) {
+    public Waypoint(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;
@@ -63,11 +70,15 @@ public final class Waypoint {
         this.photoUrl = photoUrl;
     }
 
-    public long getId() {
+    /**
+     * May be null if the waypoint was not loaded from the database.
+     */
+    public @Nullable
+    Id getId() {
         return id;
     }
 
-    public void setId(long id) {
+    public void setId(Id id) {
         this.id = id;
     }
 
@@ -103,11 +114,11 @@ public final class Waypoint {
         this.icon = icon;
     }
 
-    public long getTrackId() {
+    public Track.Id getTrackId() {
         return trackId;
     }
 
-    public void setTrackId(long trackId) {
+    public void setTrackId(Track.Id trackId) {
         this.trackId = trackId;
     }
 
@@ -147,4 +158,66 @@ public final class Waypoint {
     public boolean hasPhoto() {
         return photoUrl != null && !"".equals(photoUrl);
     }
+
+    public static class Id implements Parcelable {
+
+        private final long id;
+
+        public Id(long id) {
+            this.id = id;
+        }
+
+        public Id(@NonNull String id) {
+            this(Long.parseLong(id));
+        }
+
+        //TOOD Limit visibility to TrackRecordingService / ContentProvider
+        public long getId() {
+            return id;
+        }
+
+        @Deprecated //TODO Use a Waypoint.Id of null instead
+        public boolean isValid() {
+            return id != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            Id id1 = (Id) o;
+            return id == id1.id;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(id);
+        }
+
+        @NonNull
+        @Override
+        public String toString() {
+            throw new RuntimeException("Not supported");
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel parcel, int i) {
+            parcel.writeLong(id);
+        }
+
+        public static final Parcelable.Creator<Id> CREATOR = new Parcelable.Creator<Id>() {
+            public Id createFromParcel(Parcel in) {
+                return new Id(in.readLong());
+            }
+
+            public Id[] newArray(int size) {
+                return new Id[size];
+            }
+        };
+    }
 }

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

@@ -33,7 +33,7 @@ public interface WaypointsColumns extends BaseColumns {
     Uri CONTENT_URI_BY_TRACKID = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME + "/trackid");
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.waypoint";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.waypoint";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String NAME = "name"; // waypoint name

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

@@ -23,13 +23,19 @@ import android.database.Cursor;
 import android.location.Location;
 import android.net.Uri;
 import android.text.TextUtils;
+import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
+import androidx.loader.content.CursorLoader;
+import androidx.loader.content.Loader;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.UUID;
 
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.android.ContentResolverWrapper;
@@ -42,6 +48,7 @@ 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;
 import de.dennisguse.opentracks.util.UUIDUtils;
 
 /**
@@ -56,7 +63,8 @@ public class ContentProviderUtils {
     private static final int MAX_LATITUDE = 90000000;
 
     // The authority (the first part of the URI) for the app's content provider.
-    static final String AUTHORITY_PACKAGE = BuildConfig.APPLICATION_ID + ".content";
+    @VisibleForTesting
+    public static final String AUTHORITY_PACKAGE = BuildConfig.APPLICATION_ID + ".content";
 
     // The base URI for the app's content provider.
     public static final String CONTENT_BASE_URI = "content://" + AUTHORITY_PACKAGE;
@@ -86,8 +94,8 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    public void clearTrack(Context context, long trackId) {
-        deleteTrackPointsAndWaypoints(context, trackId);
+    public void clearTrack(Track.Id trackId) {
+        deleteTrackPointsAndWaypoints(trackId);
         Track track = new Track();
         track.setId(trackId);
         updateTrack(track);
@@ -118,7 +126,7 @@ public class ContentProviderUtils {
         Track track = new Track();
         TrackStatistics trackStatistics = track.getTrackStatistics();
         if (!cursor.isNull(idIndex)) {
-            track.setId(cursor.getLong(idIndex));
+            track.setId(new Track.Id(cursor.getLong(idIndex)));
         }
         if (!cursor.isNull(uuidIndex)) {
             track.setUuid(UUIDUtils.fromBytes(cursor.getBlob(uuidIndex)));
@@ -181,14 +189,17 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    public void deleteTrack(Context context, long trackId) {
-        deleteTrackPointsAndWaypoints(context, trackId);
+    public void deleteTrack(Context context, Track.Id trackId) {
+        if (trackId == null) {
+            return;
+        }
+        deleteTrackPointsAndWaypoints(trackId);
 
         // Delete track folder resources.
         FileUtils.deleteDirectoryRecurse(FileUtils.getPhotoDir(context, trackId));
 
         // Delete track last since it triggers a database vacuum call
-        contentResolver.delete(TracksColumns.CONTENT_URI, TracksColumns._ID + "=?", new String[]{Long.toString(trackId)});
+        contentResolver.delete(TracksColumns.CONTENT_URI, TracksColumns._ID + "=?", new String[]{Long.toString(trackId.getId())});
     }
 
     /**
@@ -196,21 +207,15 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    private void deleteTrackPointsAndWaypoints(Context context, long trackId) {
-        String where = TrackPointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
-        contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, where, selectionArgs);
+    private void deleteTrackPointsAndWaypoints(@NonNull Track.Id trackId) {
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
 
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns.TRACKID + "=?", new String[]{Long.toString(trackId)});
+        contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, TrackPointsColumns.TRACKID + "=?", selectionArgs);
+        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns.TRACKID + "=?", selectionArgs);
     }
 
-    /**
-     * Gets all the tracks.
-     *
-     * @return the tracks do not have any trackPoints attached.
-     */
     @VisibleForTesting
-    public List<Track> getAllTracks() {
+    public List<Track> getTracks() {
         ArrayList<Track> tracks = new ArrayList<>();
         try (Cursor cursor = getTrackCursor(null, null, TracksColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
@@ -223,6 +228,17 @@ public class ContentProviderUtils {
         return tracks;
     }
 
+    public static Loader<Cursor> getTracksCursorLoader(Context context) {
+        String[] PROJECTION = new String[]{TracksColumns._ID, TracksColumns.NAME,
+                TracksColumns.DESCRIPTION, TracksColumns.CATEGORY, TracksColumns.STARTTIME,
+                TracksColumns.TOTALDISTANCE, TracksColumns.TOTALTIME, TracksColumns.ICON};
+
+        return new CursorLoader(context, TracksColumns.CONTENT_URI, PROJECTION, null, null, TrackUtils.TRACK_SORT_ORDER);
+    }
+
+    @Deprecated
+    //TODO Do not use; rather get the proper TrackId (e.g., resume a track might give you some weird effects).
+    @VisibleForTesting
     public Track getLastTrack() {
         try (Cursor cursor = getTrackCursor(null, null, TracksColumns.STARTTIME + " DESC")) {
             // Using the same order as shown in the track list
@@ -235,13 +251,25 @@ public class ContentProviderUtils {
 
     /**
      * @param trackId the track id.
-     * @return the track doesn't have any trackPoints attached
      */
-    public Track getTrack(long trackId) {
-        if (trackId < 0) {
+    public Track getTrack(Track.Id trackId) {
+        if (trackId == null || !trackId.isValid()) {
             return null;
         }
-        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId)}, TracksColumns._ID)) {
+        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId.getId())}, null)) {
+            if (cursor != null && cursor.moveToNext()) {
+                return createTrack(cursor);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @param trackUUID the track uuid.
+     */
+    public Track getTrack(@NonNull UUID trackUUID) {
+        String trackUUIDsearch = UUIDUtils.toHex(trackUUID);
+        try (Cursor cursor = getTrackCursor("hex(" + TracksColumns.UUID + ")=?", new String[]{trackUUIDsearch}, null)) {
             if (cursor != null && cursor.moveToNext()) {
                 return createTrack(cursor);
             }
@@ -279,7 +307,7 @@ public class ContentProviderUtils {
      * @param track the track
      */
     public void updateTrack(Track track) {
-        contentResolver.update(TracksColumns.CONTENT_URI, createContentValues(track), TracksColumns._ID + "=?", new String[]{Long.toString(track.getId())});
+        contentResolver.update(TracksColumns.CONTENT_URI, createContentValues(track), TracksColumns._ID + "=?", new String[]{Long.toString(track.getId().getId())});
     }
 
     private ContentValues createContentValues(Track track) {
@@ -287,8 +315,8 @@ public class ContentProviderUtils {
         TrackStatistics trackStatistics = track.getTrackStatistics();
 
         // Value < 0 indicates no id is available
-        if (track.getId() >= 0) {
-            values.put(TracksColumns._ID, track.getId());
+        if (track.getId() != null && track.getId().isValid()) {
+            values.put(TracksColumns._ID, track.getId().getId());
         }
         values.put(TracksColumns.UUID, UUIDUtils.toBytes(track.getUuid()));
         values.put(TracksColumns.NAME, track.getName());
@@ -354,7 +382,7 @@ public class ContentProviderUtils {
         Waypoint waypoint = new Waypoint(location);
 
         if (!cursor.isNull(idIndex)) {
-            waypoint.setId(cursor.getLong(idIndex));
+            waypoint.setId(new Waypoint.Id(cursor.getLong(idIndex)));
         }
         if (!cursor.isNull(nameIndex)) {
             waypoint.setName(cursor.getString(nameIndex));
@@ -369,7 +397,7 @@ public class ContentProviderUtils {
             waypoint.setIcon(cursor.getString(iconIndex));
         }
         if (!cursor.isNull(trackIdIndex)) {
-            waypoint.setTrackId(cursor.getLong(trackIdIndex));
+            waypoint.setTrackId(new Track.Id(cursor.getLong(trackIdIndex)));
         }
         if (!cursor.isNull(lengthIndex)) {
             waypoint.setLength(cursor.getFloat(lengthIndex));
@@ -384,10 +412,10 @@ public class ContentProviderUtils {
         return waypoint;
     }
 
-    public void deleteWaypoint(Context context, long waypointId) {
+    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)});
+        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns._ID + "=?", new String[]{Long.toString(waypointId.getId())});
     }
 
     /**
@@ -396,13 +424,13 @@ public class ContentProviderUtils {
      * @param trackId the track id
      * @return -1 if not able to get the next waypoint number.
      */
-    public int getNextWaypointNumber(long trackId) {
-        if (trackId < 0) {
+    public int getNextWaypointNumber(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return -1;
         }
         String[] projection = {WaypointsColumns._ID};
         String selection = WaypointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getWaypointCursor(projection, selection, selectionArgs, WaypointsColumns._ID, -1)) {
             if (cursor != null) {
                 return cursor.getCount();
@@ -411,12 +439,12 @@ public class ContentProviderUtils {
         return -1;
     }
 
-    public Waypoint getWaypoint(long waypointId) {
-        if (waypointId < 0) {
+    public Waypoint getWaypoint(Waypoint.Id waypointId) {
+        if (!waypointId.isValid()) {
             return null;
         }
         try (Cursor cursor = getWaypointCursor(null, WaypointsColumns._ID + "=?",
-                new String[]{Long.toString(waypointId)}, WaypointsColumns._ID, 1)) {
+                new String[]{Long.toString(waypointId.getId())}, WaypointsColumns._ID, 1)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return createWaypoint(cursor);
             }
@@ -442,30 +470,30 @@ public class ContentProviderUtils {
      * The caller owns the returned cursor and is responsible for closing it.
      *
      * @param trackId       the track id
-     * @param minWaypointId the minimum waypoint id. -1L to ignore
+     * @param minWaypointId the minimum waypoint id. null to ignore
      * @param maxWaypoints  the maximum number of waypoints to return. -1 for no limit
      */
-    public Cursor getWaypointCursor(long trackId, long minWaypointId, int maxWaypoints) {
-        if (trackId < 0) {
+    public Cursor getWaypointCursor(Track.Id trackId, @Nullable Waypoint.Id minWaypointId, int maxWaypoints) {
+        if (!trackId.isValid()) {
             return null;
         }
 
         String selection;
         String[] selectionArgs;
-        if (minWaypointId >= 0) {
+        if (minWaypointId != null && minWaypointId.isValid()) {
             selection = WaypointsColumns.TRACKID + "=? AND " + WaypointsColumns._ID + ">=?";
-            selectionArgs = new String[]{Long.toString(trackId), Long.toString(minWaypointId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(minWaypointId.getId())};
         } else {
             selection = WaypointsColumns.TRACKID + "=?";
-            selectionArgs = new String[]{Long.toString(trackId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId())};
         }
         return getWaypointCursor(null, selection, selectionArgs, WaypointsColumns._ID, maxWaypoints);
     }
 
     @VisibleForTesting
-    public List<Waypoint> getWaypoints(long trackId) {
+    public List<Waypoint> getWaypoints(Track.Id trackId) {
         ArrayList<Waypoint> waypoints = new ArrayList<>();
-        try (Cursor cursor = getWaypointCursor(trackId, -1L, -1)) {
+        try (Cursor cursor = getWaypointCursor(trackId, null, -1)) {
             if (cursor.moveToFirst()) {
                 do {
                     waypoints.add(createWaypoint(cursor));
@@ -475,19 +503,34 @@ public class ContentProviderUtils {
         return waypoints;
     }
 
+    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};
+
+        if (trackId != null) {
+            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION,
+                    WaypointsColumns.TRACKID + "=?",
+                    new String[]{String.valueOf(trackId.getId())}, null);
+        } else {
+            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION, null, null, null);
+        }
+    }
+
     /**
      * Gets the number of waypoints for a track.
      *
      * @param trackId the track id
      */
-    public int getWaypointCount(long trackId) {
-        if (trackId < 0) {
+    public int getWaypointCount(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return 0;
         }
 
         String[] projection = new String[]{"count(*) AS count"};
         String selection = WaypointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = contentResolver.query(WaypointsColumns.CONTENT_URI, projection, selection, selectionArgs, WaypointsColumns._ID)) {
             if (cursor == null) {
                 return 0;
@@ -503,8 +546,8 @@ public class ContentProviderUtils {
      * @param waypoint the waypoint
      * @return the content provider URI of the inserted waypoint.
      */
-    public Uri insertWaypoint(Waypoint waypoint) {
-        waypoint.setId(-1L);
+    public Uri insertWaypoint(@NonNull Waypoint waypoint) {
+        waypoint.setId(null);
         return contentResolver.insert(WaypointsColumns.CONTENT_URI, createContentValues(waypoint));
     }
 
@@ -539,22 +582,23 @@ public class ContentProviderUtils {
         if (!updatedWaypoint.hasPhoto()) {
             deleteWaypointPhoto(context, savedWaypoint);
         }
-        int rows = contentResolver.update(WaypointsColumns.CONTENT_URI, createContentValues(updatedWaypoint), WaypointsColumns._ID + "=?", new String[]{Long.toString(updatedWaypoint.getId())});
+        int rows = contentResolver.update(WaypointsColumns.CONTENT_URI, createContentValues(updatedWaypoint), WaypointsColumns._ID + "=?", new String[]{Long.toString(updatedWaypoint.getId().getId())});
         return rows == 1;
     }
 
-    ContentValues createContentValues(Waypoint waypoint) {
+    ContentValues createContentValues(@NonNull Waypoint waypoint) {
         ContentValues values = new ContentValues();
 
-        // Value < 0 indicates no id is available
-        if (waypoint.getId() >= 0) {
-            values.put(WaypointsColumns._ID, waypoint.getId());
+        if (waypoint.getId() != null && waypoint.getId().isValid()) {
+            values.put(WaypointsColumns._ID, waypoint.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());
-        values.put(WaypointsColumns.TRACKID, waypoint.getTrackId());
+        if (waypoint.getTrackId() != null) {
+            values.put(WaypointsColumns.TRACKID, waypoint.getTrackId().getId());
+        }
         values.put(WaypointsColumns.LENGTH, waypoint.getLength());
         values.put(WaypointsColumns.DURATION, waypoint.getDuration());
 
@@ -647,7 +691,7 @@ public class ContentProviderUtils {
      * @return the number of trackPoints inserted
      */
     //TODO Only used for testing and file import; might be better to replace it.
-    public int bulkInsertTrackPoint(TrackPoint[] trackPoints, long trackId) {
+    public int bulkInsertTrackPoint(TrackPoint[] trackPoints, Track.Id trackId) {
         ContentValues[] values = new ContentValues[trackPoints.length];
         for (int i = 0; i < values.length; i++) {
             values[i] = createContentValues(trackPoints[i], trackId);
@@ -657,23 +701,23 @@ public class ContentProviderUtils {
 
     /**
      * Gets the first location id for a track.
-     * Returns -1L if it doesn't exist.
+     * Returns null if it doesn't exist.
      *
      * @param trackId the track id
      */
     @Deprecated
-    public long getFirstTrackPointId(long trackId) {
-        if (trackId < 0) {
-            return -1L;
+    public Track.Id getFirstTrackPointId(Track.Id trackId) {
+        if (!trackId.isValid()) {
+            return null;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MIN(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
-                return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
+                return new Track.Id(cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID)));
             }
         }
-        return -1L;
+        return null;
     }
 
     /**
@@ -683,12 +727,13 @@ public class ContentProviderUtils {
      * @param trackId the track id
      */
     @Deprecated
-    public long getLastTrackPointId(long trackId) {
-        if (trackId < 0) {
+    public long getLastTrackPointId(Track.Id trackId) {
+        if (trackId == null || !trackId.isValid()) {
+            Log.w(TAG, "Fix callers who do this.");
             return -1L;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") from " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
@@ -704,12 +749,12 @@ public class ContentProviderUtils {
      * @param location the location
      * @return trackPoint id if the location is in the track. -1L otherwise.
      */
-    public long getTrackPointId(long trackId, Location location) {
-        if (trackId < 0) {
+    public long getTrackPointId(Track.Id trackId, Location location) {
+        if (!trackId.isValid()) {
             return -1L;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns.TIME + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId), Long.toString(location.getTime())};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(location.getTime())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
@@ -735,8 +780,8 @@ public class ContentProviderUtils {
      * @param maxLocations      maximum number of locations to return. -1 for no limit
      * @param descending        true to sort the result in descending order (latest location first)
      */
-    public Cursor getTrackPointCursor(long trackId, long startTrackPointId, int maxLocations, boolean descending) {
-        if (trackId < 0) {
+    public Cursor getTrackPointCursor(Track.Id trackId, long startTrackPointId, int maxLocations, boolean descending) {
+        if (!trackId.isValid()) {
             return null;
         }
 
@@ -745,10 +790,10 @@ public class ContentProviderUtils {
         if (startTrackPointId >= 0) {
             String comparison = descending ? "<=" : ">=";
             selection = TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns._ID + comparison + "?";
-            selectionArgs = new String[]{Long.toString(trackId), Long.toString(startTrackPointId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(startTrackPointId)};
         } else {
             selection = TrackPointsColumns.TRACKID + "=?";
-            selectionArgs = new String[]{Long.toString(trackId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId())};
         }
 
         String sortOrder = TrackPointsColumns._ID;
@@ -768,12 +813,12 @@ public class ContentProviderUtils {
      * @param trackId the track id
      */
     @Deprecated
-    public TrackPoint getLastValidTrackPoint(long trackId) {
-        if (trackId < 0) {
+    public TrackPoint getLastValidTrackPoint(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return null;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns.LATITUDE + "<=" + MAX_LATITUDE + ")";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         return findTrackPointBy(selection, selectionArgs);
     }
 
@@ -784,19 +829,19 @@ public class ContentProviderUtils {
      * @param trackId    the track id
      * @return the content provider URI of the inserted trackPoint
      */
-    public Uri insertTrackPoint(TrackPoint trackPoint, long trackId) {
+    public Uri insertTrackPoint(TrackPoint trackPoint, Track.Id trackId) {
         return contentResolver.insert(TrackPointsColumns.CONTENT_URI_BY_ID, createContentValues(trackPoint, trackId));
     }
 
     /**
      * 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, long trackId) {
+    private ContentValues createContentValues(TrackPoint trackPoint, Track.Id trackId) {
         ContentValues values = new ContentValues();
-        values.put(TrackPointsColumns.TRACKID, trackId);
+        values.put(TrackPointsColumns.TRACKID, trackId.getId());
         values.put(TrackPointsColumns.LONGITUDE, (int) (trackPoint.getLongitude() * 1E6));
         values.put(TrackPointsColumns.LATITUDE, (int) (trackPoint.getLatitude() * 1E6));
 
@@ -837,7 +882,7 @@ public class ContentProviderUtils {
      * @param startTrackPointId the starting trackPoint id. -1L to ignore
      * @param descending        true to sort the result in descending order (latest location first)
      */
-    public TrackPointIterator getTrackPointLocationIterator(final long trackId, final long startTrackPointId, final boolean descending) {
+    public TrackPointIterator getTrackPointLocationIterator(final Track.Id trackId, final long startTrackPointId, final boolean descending) {
         return new TrackPointIterator(this, trackId, startTrackPointId, descending);
     }
 
@@ -863,7 +908,7 @@ public class ContentProviderUtils {
     }
 
     @VisibleForTesting
-    public List<TrackPoint> getTrackPoints(long trackId) {
+    public List<TrackPoint> getTrackPoints(Track.Id trackId) {
         List<TrackPoint> trackPoints = null;
 
         try (Cursor trackPointCursor = getTrackPointCursor(trackId, -1L, -1, false)) {
@@ -894,13 +939,23 @@ public class ContentProviderUtils {
         this.defaultCursorBatchSize = defaultCursorBatchSize;
     }
 
+
+    public static String formatIdListForUri(Track.Id... trackIds) {
+        long[] ids = new long[trackIds.length];
+        for (int i = 0; i < trackIds.length; i++) {
+            ids[i] = trackIds[i].getId();
+        }
+
+        return formatIdListForUri(ids);
+    }
+
     /**
      * Formats an array of IDs as comma separated string value
      *
      * @param ids array with IDs
      * @return comma separated list of ids
      */
-    public static String formatIdListForUri(long[] ids) {
+    private static String formatIdListForUri(long[] ids) {
         StringBuilder idsPathSegment = new StringBuilder();
         for (long id : ids) {
             if (idsPathSegment.length() > 0) {

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

@@ -42,7 +42,7 @@ import de.dennisguse.opentracks.content.data.WaypointsColumns;
  *
  * @author Leif Hendrik Wilden
  */
-public abstract class CustomContentProvider extends ContentProvider {
+public class CustomContentProvider extends ContentProvider {
 
     private static final String TAG = CustomContentProvider.class.getSimpleName();
 

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

@@ -11,6 +11,7 @@ import androidx.annotation.VisibleForTesting;
 
 import java.util.UUID;
 
+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;
@@ -20,13 +21,14 @@ import de.dennisguse.opentracks.util.UUIDUtils;
  * Database helper for creating and upgrading the database.
  */
 @VisibleForTesting
-class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
+public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
 
     private static final String TAG = CustomSQLiteOpenHelper.class.getSimpleName();
 
     private static final int DATABASE_VERSION = 26;
 
-    private static final String DATABASE_NAME = "database.db";
+    @VisibleForTesting
+    public static final String DATABASE_NAME = "database.db";
 
     public CustomSQLiteOpenHelper(Context context) {
         this(context, DATABASE_NAME);
@@ -161,7 +163,7 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
             if (cursor.moveToFirst()) {
                 int trackIdIndex = cursor.getColumnIndexOrThrow("_id");
                 do {
-                    long trackId = cursor.getLong(trackIdIndex);
+                    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)});

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

@@ -17,8 +17,11 @@ import androidx.annotation.Nullable;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import de.dennisguse.opentracks.android.IContentResolver;
 import de.dennisguse.opentracks.content.data.Track;
@@ -29,9 +32,9 @@ import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 /**
  * A content provider that mimics the behavior of {@link androidx.core.content.FileProvider}, which shares virtual (non-existing) KML-files.
  * The actual content of the virtual files is generated by using the functionality defined in {@link CustomContentProvider}.
- *
+ * <p>
  * Moreover, it manages access to OpenTrack's database via {@link CustomContentProvider}.
- *
+ * <p>
  * Explanation:
  * Although a request is handled by a {@link android.content.ContentProvider} (with temporarily granted permission), Android's security infrastructure prevents forwarding queries to non-exported {@link android.content.ContentProvider}.
  * Thus, if {@link ShareContentProvider} and {@link CustomContentProvider} would be two different instances, the data would not be accessible to external apps.
@@ -70,14 +73,20 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, TracksColumns.TABLE_NAME + "/" + TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES.getName() + "/*/*", URI_KMZ_WITH_TRACKDETAIL_SENSORDATA_AND_PICTURES);
     }
 
-    public static Pair<Uri, String> createURI(long[] trackIds, String trackName, @NonNull TrackFileFormat trackFileFormat) {
-        if (trackIds.length == 0) {
+    public static Pair<Uri, String> createURI(Track.Id trackId, String trackName, @NonNull TrackFileFormat trackFileFormat) {
+        Set<Track.Id> trackIds = new HashSet<>(1);
+        trackIds.add(trackId);
+        return createURI(trackIds, trackName, trackFileFormat);
+    }
+
+    public static Pair<Uri, String> createURI(Set<Track.Id> trackIds, String trackName, @NonNull TrackFileFormat trackFileFormat) {
+        if (trackIds.size() == 0) {
             throw new UnsupportedOperationException();
         }
 
         StringBuilder trackIdBuilder = new StringBuilder();
-        for (long trackId : trackIds) {
-            trackIdBuilder.append(trackId).append(TRACKID_DELIMITER);
+        for (Track.Id trackId : trackIds) {
+            trackIdBuilder.append(trackId.getId()).append(TRACKID_DELIMITER);
         }
         trackIdBuilder.deleteCharAt(trackIdBuilder.lastIndexOf(TRACKID_DELIMITER));
 
@@ -89,18 +98,18 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
         return new Pair<>(uri, mime);
     }
 
-    static long[] parseURI(Uri uri) {
+    static Set<Track.Id> parseURI(Uri uri) {
         List<String> uriPaths = uri.getPathSegments();
         if (uriPaths == null || uriPaths.size() < 3) {
             Log.d(TAG, "URI does not contain any trackIds.");
-            return new long[]{};
+            return new HashSet<>();
         }
 
         String[] uriTrackIds = uriPaths.get(2).split(TRACKID_DELIMITER);
 
-        long[] trackIds = new long[uriTrackIds.length];
-        for (int i = 0; i < trackIds.length; i++) {
-            trackIds[i] = Long.parseLong(uriTrackIds[i]);
+        Set<Track.Id> trackIds = new HashSet<>();
+        for (String uriTrackId : uriTrackIds) {
+            trackIds.add(new Track.Id(Long.parseLong(uriTrackId)));
         }
         return trackIds;
     }
@@ -202,17 +211,17 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
     public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
 
-        long[] trackIds = parseURI(uri);
-        final Track[] tracks = new Track[trackIds.length];
-        for (int i = 0; i < trackIds.length; i++) {
-            tracks[i] = contentProviderUtils.getTrack(trackIds[i]);
+        Set<Track.Id> trackIds = parseURI(uri);
+        final ArrayList<Track> tracks = new ArrayList<>();
+        for (Track.Id trackId : trackIds) {
+            tracks.add(contentProviderUtils.getTrack(trackId));
         }
 
-        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext(), tracks);
+        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext());
 
-        PipeDataWriter<String> pipeDataWriter = (PipeDataWriter<String>) (output, uri1, mimeType, opts, args) -> {
+        PipeDataWriter<String> pipeDataWriter = (output, uri1, mimeType, opts, args) -> {
             try (FileOutputStream fileOutputStream = new FileOutputStream(output.getFileDescriptor())) {
-                trackExporter.writeTrack(getContext(), fileOutputStream);
+                trackExporter.writeTrack(tracks.toArray(new Track[0]), fileOutputStream);
             } catch (IOException e) {
                 Log.w(TAG, "there occurred an error while sharing a file: " + e);
             }

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

@@ -6,6 +6,7 @@ import android.util.Log;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 
 /**
@@ -16,14 +17,14 @@ public class TrackPointIterator implements Iterator<TrackPoint>, AutoCloseable {
     private static final String TAG = TrackPointIterator.class.getSimpleName();
 
     private final ContentProviderUtils contentProviderUtils;
-    private final long trackId;
+    private final Track.Id trackId;
     private final boolean descending;
     private final CachedTrackPointsIndexes indexes;
     private long lastTrackPointId = -1L;
     private Cursor cursor;
 
 
-    public TrackPointIterator(ContentProviderUtils contentProviderUtils, long trackId, long startTrackPointId, boolean descending) {
+    public TrackPointIterator(ContentProviderUtils contentProviderUtils, Track.Id trackId, long startTrackPointId, boolean descending) {
         this.contentProviderUtils = contentProviderUtils;
         this.trackId = trackId;
         this.descending = descending;

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

@@ -25,6 +25,7 @@ import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.util.DialogUtils;
 
 /**
@@ -44,9 +45,9 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
      *
      * @param trackIds list of track ids to delete.
      */
-    public static void showDialog(FragmentManager fragmentManager, long[] trackIds) {
+    public static void showDialog(FragmentManager fragmentManager, Track.Id... trackIds) {
         Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_TRACK_IDS, trackIds);
+        bundle.putParcelableArray(KEY_TRACK_IDS, trackIds);
 
         ConfirmDeleteDialogFragment deleteTrackDialogFragment = new ConfirmDeleteDialogFragment();
         deleteTrackDialogFragment.setArguments(bundle);
@@ -66,7 +67,7 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] trackIds = getArguments().getLongArray(KEY_TRACK_IDS);
+        final Track.Id[] trackIds = (Track.Id[]) getArguments().getParcelableArray(KEY_TRACK_IDS);
 
         int titleId = trackIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.track_delete_one_confirm_title;
         int messageId = trackIds.length > 1 ? R.string.track_delete_multiple_confirm_message : R.string.track_delete_one_confirm_message;
@@ -85,6 +86,6 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
      */
     public interface ConfirmDeleteCaller {
 
-        void onConfirmDeleteDone(long[] trackIds);
+        void onConfirmDeleteDone(Track.Id... trackIds);
     }
 }

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

@@ -26,6 +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.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.DialogUtils;
 
@@ -41,9 +42,9 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
 
     private DeleteMarkerCaller caller;
 
-    public static void showDialog(FragmentManager fragmentManager, long[] markerIds) {
+    public static void showDialog(FragmentManager fragmentManager, Waypoint.Id... waypointIds) {
         Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_MARKER_IDS, markerIds);
+        bundle.putParcelableArray(KEY_MARKER_IDS, waypointIds);
 
         DeleteMarkerDialogFragment deleteMarkerDialogFragment = new DeleteMarkerDialogFragment();
         deleteMarkerDialogFragment.setArguments(bundle);
@@ -63,23 +64,23 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] markerIds = getArguments().getLongArray(KEY_MARKER_IDS);
+        final Waypoint.Id[] waypointIds = (Waypoint.Id[]) getArguments().getParcelableArray(KEY_MARKER_IDS);
 
         final FragmentActivity fragmentActivity = getActivity();
         int titleId;
         int messageId;
-        if (markerIds.length == 1 && markerIds[0] == -1L) {
+        if (waypointIds == null) {
             titleId = R.string.generic_delete_all_confirm_title;
             messageId = R.string.marker_delete_all_confirm_message;
         } else {
-            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;
+            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;
         }
         return DialogUtils.createConfirmationDialog(
                 fragmentActivity, titleId, getString(messageId), (dialog, which) -> new Thread(() -> {
                     ContentProviderUtils contentProviderUtils = new ContentProviderUtils(fragmentActivity);
-                    for (long markerId : markerIds) {
-                        contentProviderUtils.deleteWaypoint(getContext(), markerId);
+                    for (Waypoint.Id waypointId : waypointIds) {
+                        contentProviderUtils.deleteWaypoint(getContext(), waypointId);
                     }
                     caller.onDeleteMarkerDone();
                 }).start());

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

@@ -206,10 +206,10 @@ public class ExportProgressDialogFragment extends DialogFragment {
         }
 
         private Boolean exportTrack(Context context, Track track) {
-            TrackExporter trackExporter = trackFileFormat.newTrackExporter(context, new Track[]{track});
+            TrackExporter trackExporter = trackFileFormat.newTrackExporter(context);
 
             //TODO Move to helper function
-            String fileName = track.getId() + "." + trackFileFormat.getExtension();
+            String fileName = track.getId().getId() + "." + trackFileFormat.getExtension();
 
             // 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);
@@ -218,7 +218,7 @@ public class ExportProgressDialogFragment extends DialogFragment {
             }
 
             try (OutputStream outputStream = context.getContentResolver().openOutputStream(file.getUri())) {
-                if (trackExporter.writeTrack(context, outputStream)) {
+                if (trackExporter.writeTrack(track, outputStream)) {
                     return true;
                 } else {
                     if (!file.delete()) {

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

@@ -205,16 +205,16 @@ public class ImportProgressDialogFragment extends DialogFragment {
             if (TrackFileFormat.GPX.getExtension().equals(fileExtension)) {
                 trackImporter = new GpxFileTrackImporter(context);
             } else if (TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.getExtension().equals(fileExtension)) {
-                trackImporter = new KmlFileTrackImporter(ImportProgressDialogFragment.this.getContext(), -1L);
+                trackImporter = new KmlFileTrackImporter(ImportProgressDialogFragment.this.getContext());
             } else if (TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES.getExtension().equals(fileExtension)) {
-                trackImporter = new KmzTrackImporter(context, -1L, file.getUri());
+                trackImporter = new KmzTrackImporter(context, file.getUri());
             } else {
                 Log.i(TAG, "Unsupported file format.");
                 return false;
             }
 
             try (InputStream inputStream = context.getContentResolver().openInputStream(file.getUri())) {
-                return trackImporter.importFile(inputStream) != -1L;
+                return trackImporter.importFile(inputStream) != null;
             } catch (IOException e) {
                 Log.e(TAG, "Unable to import file", e);
                 return false;

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

@@ -0,0 +1,93 @@
+package de.dennisguse.opentracks.fragments;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.LinearLayout;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.ViewModelProvider;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
+import de.dennisguse.opentracks.viewmodels.IntervalStatisticsModel;
+import de.dennisguse.opentracks.views.IntervalListView;
+
+/**
+ * A fragment to display the intervals from recorded track.
+ */
+public class IntervalsRecordedFragment extends Fragment implements IntervalListView.IntervalListListener {
+
+    private static final String TAG = IntervalsRecordedFragment.class.getSimpleName();
+
+    private static final String TRACK_ID_KEY = "trackId";
+
+    private IntervalStatisticsModel viewModel;
+    private IntervalListView intervalListView;
+
+    private Track.Id trackId;
+
+    public static Fragment newInstance(Track.Id trackId) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(TRACK_ID_KEY, trackId);
+
+        Fragment fragment = new IntervalsRecordedFragment();
+        fragment.setArguments(bundle);
+        return fragment;
+    }
+
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.intervals_recording, container, false);
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        trackId = getArguments().getParcelable(TRACK_ID_KEY);
+
+        intervalListView = new IntervalListView(getActivity(), this);
+        intervalListView.setId(View.generateViewId());
+        LinearLayout linearLayout = view.findViewById(R.id.root_view);
+        linearLayout.removeAllViews();
+        linearLayout.addView(intervalListView);
+
+        viewModel = new ViewModelProvider(this).get(IntervalStatisticsModel.class);
+
+        intervalChanged(null);
+    }
+
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        intervalListView.destroy();
+        intervalListView = null;
+        viewModel = null;
+    }
+
+    /**
+     * Update intervals through {@link IntervalStatisticsModel} view model.
+     *
+     * @param interval intervals will split in this interval if not null. If it's null then view model will use the default one.
+     */
+    @Override
+    public void intervalChanged(@Nullable IntervalStatisticsModel.IntervalOption interval) {
+        if (viewModel == null || intervalListView == null) {
+            return;
+        }
+
+        LiveData<IntervalStatistics> liveData = viewModel.getIntervalStats(trackId, interval);
+        liveData.observe(getActivity(), intervalStatistics -> {
+            if (intervalStatistics != null) {
+                intervalListView.display(intervalStatistics.getIntervalList());
+            }
+        });
+    }
+}