Bugfix: crash if heart rate sensor was null (i.e., preference not initialized).

Initialization of looper was missing.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,26 @@
+---
+name: Bug report
+about: Report issues of OpenTracks features
+title: ''
+labels: potential bug
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+If applicable:
+* add screenshots
+* add logcat output
+
+**Technical information**
+ - Device: [e.g. Nexus 7 (2013)]
+ - OS: [e.g. LineageOS 15.1]
+ - Version [e.g. v3.2.4]

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for OpenTracks
+title: ''
+labels: enhancement
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,10 @@
+# Thanks for your contribution.
+
+**Describe the pull request**
+A clear and concise description of what the pull request changes/adds.
+
+**Link to the the issue**
+(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)).

.idea/render.experimental.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RenderSettings">
+    <option name="showDecorations" value="true" />
+  </component>
+</project>

.travis.yml

@@ -1,12 +1,45 @@
+#See https://docs.travis-ci.com/user/languages/android/
+#See https://github.com/ankidroid/Anki-Android/blob/master/.travis.yml
 language: android
-dist: trusty
+
+env:
+  global:
+    - ADB_INSTALL_TIMEOUT=8
+    - ABI=armeabi-v7a
+    - EMU_FLAVOR=default
+    # PATH order is incredibly important. e.g. the 'emulator' script exists in more than one place!
+    - ANDROID_HOME=/usr/local/android-sdk
+    - TOOLS=${ANDROID_HOME}/tools
+    - PATH=${ANDROID_HOME}:${ANDROID_HOME}/emulator:${TOOLS}:${TOOLS}/bin:${ANDROID_HOME}/platform-tools:${PATH}
+  matrix:
+    - API=27 ABI=x86_64
 
 android:
   components:
+    # installing tools to start, then use `sdkmanager` below to get the rest
+    - tools
     - build-tools-28.0.3
-    - android-29
+    - android-28
+
+# Emulator Management: Create, Start and Wait
+install:
+  - echo y | sdkmanager "platform-tools"
+  - echo y | sdkmanager --channel=4 "emulator"
+  - echo y | sdkmanager "system-images;android-$API;$EMU_FLAVOR;$ABI"
+  - echo no | avdmanager create avd --force -n test -k "system-images;android-$API;$EMU_FLAVOR;$ABI" -c 10M
+  - emulator -verbose -avd test -no-accel -no-snapshot -no-window -camera-back none -camera-front none -selinux permissive -qemu -m 2048 &
+  - android-wait-for-emulator
+  - adb shell input keyevent 82 &
 
 script:
-  - ./gradlew build
-  #TODO: When all tests are passing, CI should also execute them.
-  #- ./gradlew connectedCheck
+  - ./gradlew clean build
+  - ./gradlew connectedCheck
+
+sbefore_cache:
+  - rm -f  $HOME/.gradle/caches/modules-2/modules-2.lock
+  - rm -fr $HOME/.gradle/caches/*/plugin-resolution/
+cache:
+  directories:
+    - $HOME/.gradle/caches/
+    - $HOME/.gradle/wrapper/
+    - $HOME/.android/build-cache

DEVELOPER.md

@@ -7,6 +7,10 @@
 3. Manually update _version code_ and _version name_ in `AndroidManifest.xml` (used by FDroid)
 4. Create changelog (`_version code_.txt`)
 5. Create commit with all changes
-6. Push commits
-7. Tag newly create commit with _version name_
-8. Push the tagged to public repository  
+6. Tag newly create commit with _version name_ (e.g., v3.2.1)
+7. Push commits and tags to public repository
+8. Add changelog to tag (Github releases)  
+
+## Translations (localization)
+
+Translations of the OpenTracks are handled in Transifex: [https://www.transifex.com/opentracks](https://www.transifex.com/opentracks/).

README.md

@@ -30,6 +30,14 @@ To show your tracks on a map, a 3rd party application (e.g., [OsmAnd](https://pl
     <img alt="Donate using Liberapay" src="https://liberapay.com/assets/widgets/donate.svg" height="45">
 </a>
 
+## Screenshots
+<div>
+    <img width="20%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_1.png">
+    <img width="20%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_2.png">
+    <img width="20%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_3.png">
+    <img width="20%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_4.png">
+</div>
+
 ## Project history
 
 _OpenTracks_ is based upon Google _My Tracks app_ ([code](https://code.google.com/archive/p/mytracks/)).

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.5.0'
+        classpath 'com.android.tools.build:gradle:3.5.2'
     }
 }
 
@@ -35,10 +35,14 @@ def getVersionName = { ->
     try {
         def stdout = new ByteArrayOutputStream()
         exec {
-            commandLine 'git', 'describe', '--tags', '--dirty'
+            commandLine 'git', 'describe', '--tags'
             standardOutput = stdout
         }
-        return stdout.toString().trim()
+        exec {
+            commandLine 'git', 'log', '--format="%h"', '-n 1'
+            standardOutput = stdout
+        }
+        return stdout.toString().replace('\n', '-').replace('"', '').trim()
     }
     catch (ignored) {
         return null
@@ -75,14 +79,11 @@ android {
     applicationVariants.all { variant ->
         variant.resValue "string", "applicationId", variant.applicationId
     }
-
-    lintOptions {
-        disable "AppCompatResource" // TODO Disable complaint to use androidx's SearchView as it is null.
-    }
 }
 
 dependencies {
     implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.preference:preference:1.1.0'
 
     androidTestImplementation 'androidx.test:core:1.2.0'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'

fastlane/metadata/android/de-DE/full_description.txt

@@ -0,0 +1,9 @@
+OpenTracks – ein GPS-Tracker, der deine Daten für sich behält.
+Erfasst deine Kilometer, ohne dass es jemand anderes tut.
+
+Funktionen & Features:
+* zeichnet Sport und andere Outdooraktivitäten auf
+* unterstützt das Markieren interessanter Orte, inkl. Foto-Funktion
+* zeichnet deine Herzfrequenz auf (unterstützt Bluetooth-LE-Sensoren)
+* exportiert deine Daten als KML oder GPX
+* funktioniert ganz ohne Internet

fastlane/metadata/android/de-DE/short_description.txt

@@ -0,0 +1 @@
+OpenTracks – ein GPS-Tracker, der deine Daten für sich behält.

fastlane/metadata/android/en-US/changelogs/3054.txt

@@ -1,4 +1,4 @@
-v3.2: OpenTracks
+v3.2.0: OpenTracks
 
 Changes:
 - Removed Widget

fastlane/metadata/android/en-US/changelogs/3063.txt

@@ -0,0 +1,7 @@
+v3.2.1: OpenTracks
+
+Changes:
+- Settings are now on a single page
+
+Developer:
+- Settings moved to Androidx compat (uses fragments)

fastlane/metadata/android/en-US/changelogs/3079.txt

@@ -0,0 +1,13 @@
+v3.2.2: OpenTracks
+
+Changes:
+- Removed aggregated stats
+- Migrated to Material Design
+
+Bugfix:
+- Fixed export of sensor data
+- Fixed import of incomplete sensor data
+
+Developer:
+- Replaced actionbar with toolbar
+- Migrated to androidx appcompat (incl. Material Design)

fastlane/metadata/android/en-US/changelogs/3101.txt

@@ -0,0 +1,14 @@
+v3.2.3: OpenTracks
+
+Changes:
+- Sharing: use Android Sharesheet
+- Sharing: share multiple tracks as individual files
+- Use Android ShareSheet
+- Heart rate sensor (Bluetooth LE): automatic reconnect
+
+Bugfix:
+- Heart rate sensor (Bluetooth LE): disconnect properly
+- Heart rate wasn't always shown while recording
+
+Developer:
+- Enabled TravisCI instrumentation tests

fastlane/metadata/android/en-US/changelogs/3103.txt

@@ -0,0 +1,5 @@
+v3.2.4: OpenTracks
+
+Bugfix:
+- Settings activity crashes
+  Removed possibility to change voice/split frequency from the context menu

fastlane/metadata/android/en-US/changelogs/3123.txt

@@ -0,0 +1,15 @@
+v3.2.5: OpenTracks
+
+Changes:
+- Disable activity change
+- Add permission for Android 10: recording location data
+
+Bugfix:
+- Fix reset settings
+
+Developer:
+- Preferences
+  - if Settings cannot be loaded reset all preferences
+  - moved access to preferences to PreferencesUtil
+  - moved default of preferences from code to xml
+  - use SummaryProvider

fastlane/metadata/android/en-US/changelogs/3137.txt

@@ -0,0 +1,8 @@
+v3.2.6: OpenTracks
+
+Changes:
+- Heart rate monitor: scan for available devices
+- Remove shortcut to Bluetooth settings
+
+Developer:
+- Preferences: moved default of preferences from code to xml

fastlane/metadata/android/en-US/changelogs/3149.txt

@@ -0,0 +1,10 @@
+v3.2.7: OpenTracks
+
+Changes:
+- Notification show GPS accuracy
+- Show heads-up notification if GPS accuracy drops beyond threshold
+- Always show chart by time as well as by distance
+- Added help (in Settings)
+
+Bugfix:
+- TrackDetailActivity: disabled non-working landscape mode (temporary)

fastlane/metadata/android/en-US/changelogs/3162.txt

@@ -0,0 +1,10 @@
+v3.2.8: OpenTracks
+
+Changes:
+- Chart: zoom via gestures
+
+Bugfixes:
+- Export via KMZ did not export picture filenames correctly
+- Sharing multiple tracks did not include KMZ files
+- MarkerDetailActivity's UI was not shown
+- Settings crashed if preference of heart rate was not initialized

fastlane/metadata/android/en-US/full_description.txt

@@ -3,6 +3,6 @@ OpenTracks is a sport tracking application that completely respects your privacy
 Features:
 * Sport tracking: track your sport and outdoor activities
 * Photos and markers: mark interesting locations while tracking
-* Heart rate: supports bluetooth LE sensors
-* Export data: Export tracks either as KML or GPX
+* Heart rate: supports Bluetooth LE sensors
+* Export data: export tracks either as KML or GPX
 * No Internet access: Internet is not used

fastlane/metadata/android/en-US/title.txt

@@ -0,0 +1 @@
+OpenTracks

fastlane/metadata/android/es-ES/full_description.txt

@@ -0,0 +1,8 @@
+OpenTracks es un tracker deportivo que respeta tu privacidad.
+
+Funciones:
+* Tracker deportivo: haz un seguimiento de tus actividades al aire libre
+* Marca lugares de interés, incluso agrega fotos a los marcadores
+* Pulsómetro (compatible con dispositivos Bluetooth LE)
+* Exporta tus rutas como KML o GPX
+* Completamente offline, no necesitas internet

fastlane/metadata/android/es-ES/short_description.txt

@@ -0,0 +1 @@
+OpenTracks es un tracker deportivo que respeta tu privacidad.

fastlane/metadata/android/es-ES/title.txt

@@ -0,0 +1 @@
+OpenTracks

fastlane/metadata/android/fr-FR/full_description.txt

@@ -0,0 +1,9 @@
+OpenTracks est une application de suivi d'activités sportives qui respecte totalement votre vie privée.
+
+Fonctionnalités :
+
+* Suivi d'activité : enregistre vos activités sportives et de plein air
+* Photos et repères : ajout de photos et de repères pendant l'enregistrement de l'activité
+* Rythme cardiaque : support des capteurs Bluetooth LE
+* Export : export des traces au format KML ou GPX
+* Pas d'accès internet requis : Internet n'est pas nécessaire pour le fonctionnement de l'application

fastlane/metadata/android/fr-FR/short_description.txt

@@ -0,0 +1 @@
+OpenTracks est une application de suivi d'activités sportives qui respecte totalement votre vie privée.

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

@@ -13,7 +13,7 @@
  * License for the specific language governing permissions and limitations under
  * the License.
  */
-package de.dennisguse.opentracks;
+package de.dennisguse.opentracks.chart;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -23,6 +23,8 @@ import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
+import de.dennisguse.opentracks.R;
+
 /**
  * Tests {@link ChartValueSeries}.
  *

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

@@ -35,22 +35,19 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicInteger;
 
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationFactory;
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
 import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.stats.TripStatistics;
 
-import static org.mockito.Mockito.verify;
 import static org.mockito.Mockito.when;
 
 /**
- * A unit test for {@link ContentProviderUtilsImpl}.
+ * A unit test for {@link ContentProviderUtils}.
  *
  * @author Bartlomiej Niechwiej
  * @author Youtao Liu
  */
 @RunWith(MockitoJUnitRunner.class)
-public class CustomContentProviderUtilsImplTest {
+public class CustomContentProviderUtilsTest {
     private static final String NAME_PREFIX = "test name";
     private static final String MOCK_DESC = "Mock Next Waypoint Desc!";
     private static final String TEST_DESC = "Test Desc!";
@@ -70,13 +67,13 @@ public class CustomContentProviderUtilsImplTest {
 
     @Before
     public void setUp() {
-        providerUtils = ContentProviderUtils.Factory.get(context);
+        providerUtils = new ContentProviderUtils(context);
         providerUtils.deleteAllTracks(context);
     }
 
     @Test
     public void testLocationIterator_noPoints() {
-        testIterator(1, 0, 1, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 0, 1, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     @Test
@@ -106,36 +103,36 @@ public class CustomContentProviderUtilsImplTest {
 
     @Test
     public void testLocationIterator_noBatchAscending() {
-        testIterator(1, 50, 100, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
-        testIterator(2, 50, 50, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 50, 100, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
+        testIterator(2, 50, 50, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     @Test
     public void testLocationIterator_noBatchDescending() {
-        testIterator(1, 50, 100, true, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
-        testIterator(2, 50, 50, true, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 50, 100, true, LocationFactory.DEFAULT_LOCATION_FACTORY);
+        testIterator(2, 50, 50, true, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     @Test
     public void testLocationIterator_batchAscending() {
-        testIterator(1, 50, 11, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
-        testIterator(2, 50, 25, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 50, 11, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
+        testIterator(2, 50, 25, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     @Test
     public void testLocationIterator_batchDescending() {
-        testIterator(1, 50, 11, true, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
-        testIterator(2, 50, 25, true, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 50, 11, true, LocationFactory.DEFAULT_LOCATION_FACTORY);
+        testIterator(2, 50, 25, true, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     @Test
     public void testLocationIterator_largeTrack() {
-        testIterator(1, 20000, 2000, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        testIterator(1, 20000, 2000, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
     }
 
     private List<Location> testIterator(long trackId, int numPoints, int batchSize, boolean descending, LocationFactory locationFactory) {
         long lastPointId = initializeTrack(trackId, numPoints);
-        ((ContentProviderUtilsImpl) providerUtils).setDefaultCursorBatchSize(batchSize);
+        ((ContentProviderUtils) providerUtils).setDefaultCursorBatchSize(batchSize);
         List<Location> locations = new ArrayList<Location>(numPoints);
         try (LocationIterator it = providerUtils.getTrackPointLocationIterator(trackId, -1L, descending, locationFactory)) {
             while (it.hasNext()) {
@@ -174,7 +171,7 @@ public class CustomContentProviderUtilsImplTest {
         // Load all inserted locations.
         long lastPointId = -1;
         int counter = 0;
-        try (LocationIterator it = providerUtils.getTrackPointLocationIterator(id, -1L, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY)) {
+        try (LocationIterator it = providerUtils.getTrackPointLocationIterator(id, -1L, false, LocationFactory.DEFAULT_LOCATION_FACTORY)) {
             while (it.hasNext()) {
                 it.next();
                 lastPointId = it.getLocationId();
@@ -190,7 +187,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#createTrack(Cursor)}.
+     * Tests the method {@link ContentProviderUtils#createTrack(Cursor)}.
      */
     @Test
     public void testCreateTrack() {
@@ -214,11 +211,10 @@ public class CustomContentProviderUtilsImplTest {
         Track track = providerUtils.createTrack(cursorMock);
         Assert.assertEquals(trackId, track.getId());
         Assert.assertEquals(name, track.getName());
-        verify(cursorMock);
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#deleteAllTracks(Context)}
+     * Tests the method {@link ContentProviderUtils#deleteAllTracks(Context)}
      */
     @Test
     public void testDeleteAllTracks() {
@@ -247,7 +243,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#deleteTrack(Context, long)}.
+     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, long)}.
      */
     @Test
     public void testDeleteTrack() {
@@ -282,7 +278,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getAllTracks()}
+     * Tests the method {@link ContentProviderUtils#getAllTracks()}
      */
     @Test
     public void testGetAllTracks() {
@@ -295,7 +291,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getLastTrack()}
+     * Tests the method {@link ContentProviderUtils#getLastTrack()}
      */
     @Test
     public void testGetLastTrack() {
@@ -305,7 +301,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getTrack(long)}
+     * Tests the method {@link ContentProviderUtils#getTrack(long)}
      */
     @Test
     public void testGetTrack() {
@@ -315,7 +311,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#updateTrack(Track)}
+     * Tests the method {@link ContentProviderUtils#updateTrack(Track)}
      */
     @Test
     public void testUpdateTrack() {
@@ -332,7 +328,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#createContentValues(Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#createContentValues(Waypoint)}.
      */
     @Test
     public void testCreateContentValues_waypoint() {
@@ -370,7 +366,7 @@ public class CustomContentProviderUtilsImplTest {
         waypoint.setLocation(location);
         providerUtils.insertWaypoint(waypoint);
 
-        ContentProviderUtilsImpl contentProviderUtils = new ContentProviderUtilsImpl(contentResolverMock);
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(contentResolverMock);
 
         long waypointId = System.currentTimeMillis();
         waypoint.setId(waypointId);
@@ -383,7 +379,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#createWaypoint(Cursor)}.
+     * Tests the method {@link ContentProviderUtils#createWaypoint(Cursor)}.
      */
     @Test
     public void testCreateWaypoint() {
@@ -414,12 +410,11 @@ public class CustomContentProviderUtilsImplTest {
         Assert.assertEquals(id, waypoint.getId());
         Assert.assertEquals(name, waypoint.getName());
         Assert.assertEquals(trackId, waypoint.getTrackId());
-        verify(cursorMock);
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtilsImpl#deleteWaypoint(Context, long, DescriptionGenerator)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, long, DescriptionGenerator)}
      * when there is only one waypoint in the track.
      */
     @Test
@@ -440,7 +435,7 @@ public class CustomContentProviderUtilsImplTest {
 
             @Override
             public String generateWaypointDescription(TripStatistics tripStatistics) {
-                return CustomContentProviderUtilsImplTest.MOCK_DESC;
+                return CustomContentProviderUtilsTest.MOCK_DESC;
             }
 
             @Override
@@ -455,7 +450,7 @@ public class CustomContentProviderUtilsImplTest {
 
     /**
      * Tests the method
-     * {@link ContentProviderUtilsImpl#deleteWaypoint(Context, long, DescriptionGenerator)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, long, DescriptionGenerator)}
      * when there is more than one waypoint in the track.
      */
     @Test
@@ -498,7 +493,7 @@ public class CustomContentProviderUtilsImplTest {
         DescriptionGenerator descriptionGenerator = new DescriptionGenerator() {
             @Override
             public String generateWaypointDescription(TripStatistics tripStatistics) {
-                return CustomContentProviderUtilsImplTest.MOCK_DESC;
+                return CustomContentProviderUtilsTest.MOCK_DESC;
             }
 
             @Override
@@ -511,12 +506,12 @@ public class CustomContentProviderUtilsImplTest {
         providerUtils.deleteWaypoint(context, waypoint1Id, descriptionGenerator);
         Assert.assertNull(providerUtils.getWaypoint(waypoint1Id));
 
-        Assert.assertEquals(CustomContentProviderUtilsImplTest.MOCK_DESC, providerUtils.getWaypoint(waypoint2Id)
+        Assert.assertEquals(CustomContentProviderUtilsTest.MOCK_DESC, providerUtils.getWaypoint(waypoint2Id)
                 .getDescription());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getFirstWaypointId(long)}.
+     * Tests the method {@link ContentProviderUtils#getFirstWaypointId(long)}.
      */
     @Test
     public void testGetFirstWaypointId() {
@@ -538,7 +533,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getNextWaypointNumber(long, WaypointType)}.
+     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(long, WaypointType)}.
      */
     @Test
     public void testGetNextWaypointNumber() {
@@ -597,8 +592,8 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#insertWaypoint(Waypoint)} and
-     * {@link ContentProviderUtilsImpl#getWaypoint(long)}.
+     * Tests the method {@link ContentProviderUtils#insertWaypoint(Waypoint)} and
+     * {@link ContentProviderUtils#getWaypoint(long)}.
      */
     @Test
     public void testInsertAndGetWaypoint() {
@@ -615,7 +610,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#updateWaypoint(Waypoint)}.
+     * Tests the method {@link ContentProviderUtils#updateWaypoint(Waypoint)}.
      */
     @Test
     public void testUpdateWaypoint() {
@@ -637,7 +632,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#bulkInsertTrackPoint(Location[], int, long)}.
+     * Tests the method {@link ContentProviderUtils#bulkInsertTrackPoint(Location[], int, long)}.
      */
     @Test
     public void testBulkInsertTrackPoint() {
@@ -653,7 +648,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#createTrackPoint(Cursor)}.
+     * Tests the method {@link ContentProviderUtils#createTrackPoint(Cursor)}.
      */
     @Test
     public void testCreateTrackPoint() {
@@ -709,12 +704,11 @@ public class CustomContentProviderUtilsImplTest {
         Assert.assertEquals((double) latitude, location.getLatitude(), 0.01);
         Assert.assertEquals(time, location.getTime(), 0.01);
         Assert.assertEquals(speed, location.getSpeed(), 0.01);
-        verify(cursorMock);
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtilsImpl#insertTrackPoint(Location, long)}.
+     * {@link ContentProviderUtils#insertTrackPoint(Location, long)}.
      */
     @Test
     public void testInsertTrackPoint() {
@@ -728,7 +722,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getFirstTrackPointId(long)}.
+     * Tests the method {@link ContentProviderUtils#getFirstTrackPointId(long)}.
      */
     @Test
     public void testGetFirstTrackPointId() {
@@ -741,7 +735,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getLastTrackPointId(long)}.
+     * Tests the method {@link ContentProviderUtils#getLastTrackPointId(long)}.
      */
     @Test
     public void testGetLastTrackPointId() {
@@ -754,7 +748,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getLastValidTrackPoint(long)}.
+     * Tests the method {@link ContentProviderUtils#getLastValidTrackPoint(long)}.
      */
     @Test
     public void testGetLastValidTrackPoint() {
@@ -768,7 +762,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getTrackPointCursor(long, long, int, boolean)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in descending.
      */
     @Test
     public void testGetTrackPointCursor_desc() {
@@ -787,7 +781,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getTrackPointCursor(long, long, int, boolean)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in ascending.
      */
     @Test
     public void testGetTrackPointCursor_asc() {
@@ -806,7 +800,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getTrackPointLocationIterator(long, long, boolean, LocationFactory)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean, LocationFactory)} in descending.
      */
     @Test
     public void testGetTrackPointLocationIterator_desc() {
@@ -822,7 +816,7 @@ public class CustomContentProviderUtilsImplTest {
 
         long startTrackPointId = trackpointIds[9];
 
-        LocationIterator locationIterator = providerUtils.getTrackPointLocationIterator(trackId, startTrackPointId, true, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        LocationIterator locationIterator = providerUtils.getTrackPointLocationIterator(trackId, startTrackPointId, true, LocationFactory.DEFAULT_LOCATION_FACTORY);
         for (int i = 0; i < trackpointIds.length; i++) {
             Assert.assertTrue(locationIterator.hasNext());
             Location location = locationIterator.next();
@@ -833,7 +827,7 @@ public class CustomContentProviderUtilsImplTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtilsImpl#getTrackPointLocationIterator(long, long, boolean, LocationFactory)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean, LocationFactory)} in ascending.
      */
     @Test
     public void testGetTrackPointLocationIterator_asc() {
@@ -849,7 +843,7 @@ public class CustomContentProviderUtilsImplTest {
 
         long startTrackPointId = trackpointIds[0];
 
-        LocationIterator locationIterator = providerUtils.getTrackPointLocationIterator(trackId, startTrackPointId, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY);
+        LocationIterator locationIterator = providerUtils.getTrackPointLocationIterator(trackId, startTrackPointId, false, LocationFactory.DEFAULT_LOCATION_FACTORY);
         for (int i = 0; i < trackpointIds.length; i++) {
             Assert.assertTrue(locationIterator.hasNext());
             Location location = locationIterator.next();
@@ -896,7 +890,7 @@ public class CustomContentProviderUtilsImplTest {
     /**
      * Checks the value of a location.
      *
-     * @param i        the index of this location which created in the method {@link CustomContentProviderUtilsImplTest#getTrack(long, int)}
+     * @param i        the index of this location which created in the method {@link CustomContentProviderUtilsTest#getTrack(long, int)}
      * @param location the location to be checked
      */
     private void checkLocation(int i, Location location) {

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

@@ -58,7 +58,7 @@ public class SearchEngineTest {
 
     @Before
     public void setUp() {
-        providerUtils = ContentProviderUtils.Factory.get(context);
+        providerUtils = new ContentProviderUtils(context);
         engine = new SearchEngine(providerUtils);
     }
 

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

@@ -17,17 +17,20 @@
 package de.dennisguse.opentracks.fragments;
 
 import android.location.Location;
+import android.os.Looper;
 
 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;
 import org.junit.runner.RunWith;
 
-import de.dennisguse.opentracks.ChartView;
 import de.dennisguse.opentracks.TrackStubUtils;
+import de.dennisguse.opentracks.chart.ChartView;
 import de.dennisguse.opentracks.content.SensorDataSetLocation;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.util.UnitConversions;
@@ -44,10 +47,23 @@ public class ChartFragmentTest {
 
     private ChartFragment chartFragment;
 
+    @BeforeClass
+    public static void preSetUp() {
+        // Prepare looper for Android's message queue
+        if (Looper.myLooper() == null) Looper.prepare();
+    }
+
+    @AfterClass
+    public static void finalTearDown() {
+        if (Looper.myLooper() != null) Looper.myLooper().quit();
+    }
+
     @Before
     public void setUp() {
-        chartFragment = new ChartFragment();
-        chartFragment.setChartView(new ChartView(ApplicationProvider.getApplicationContext()));
+        boolean chartByDistance = false;
+        chartFragment = new ChartFragment(chartByDistance) {
+        };
+        chartFragment.setChartView(new ChartView(ApplicationProvider.getApplicationContext(), chartByDistance));
         chartFragment.setTripStatisticsUpdater(TrackStubUtils.INITIAL_TIME);
     }
 

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

@@ -112,7 +112,7 @@ public abstract class AbstractTestFileTrackImporter {
      * @param lastTrack   true if it is the last track in the gpx
      * @param trackId     the track id
      */
-    protected void expectUpdateTrack(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, long trackId) {
+    protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, long trackId) {
         contentProviderUtils.updateTrack(trackCaptor.capture());
 
         when(contentProviderUtils.insertWaypoint((Waypoint) any())).thenReturn(WAYPOINT_ID_O_URI);

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

@@ -27,13 +27,13 @@ import org.mockito.junit.MockitoJUnitRunner;
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 
-import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
 import static org.mockito.Mockito.any;
 import static org.mockito.Mockito.anyInt;
 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;
@@ -84,8 +84,7 @@ public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
 
     @Test
     public void testOneTrackOneSegment() throws Exception {
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-
+        // given
         Location location0 = createLocation(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
         Location location1 = createLocation(1, DATE_FORMAT_1.parse(TRACK_TIME_1).getTime());
 
@@ -95,25 +94,28 @@ public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
         // A flush happens at the end
         when(contentProviderUtils.bulkInsertTrackPoint((Location[]) any(), eq(1), eq(TRACK_ID_0))).thenReturn(1);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_1);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
-        expectUpdateTrack(trackCaptor, true, TRACK_ID_0);
+        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().getTripStatistics().getTotalTime());
-        verify(contentProviderUtils);
         verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, time0);
     }
 
     @Test
     public void testOneTrackTwoSegments() throws Exception {
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-
+        // given
         Location location0 = createLocation(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
 
         when(contentProviderUtils.insertTrack((Track) any())).thenReturn(TRACK_ID_0_URI);
@@ -121,12 +123,18 @@ public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
         // A flush happens at the end
         when(contentProviderUtils.bulkInsertTrackPoint((Location[]) any(), eq(5), eq(TRACK_ID_0))).thenReturn(5);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
-        expectUpdateTrack(trackCaptor, true, TRACK_ID_0);
+        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();
@@ -135,30 +143,33 @@ public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
         long time3 = DATE_FORMAT_1.parse(TRACK_TIME_3).getTime();
         Assert.assertEquals(time1 - time0 + time3 - time2, trackCaptor.getValue().getTripStatistics().getTotalTime());
 
-        verify(contentProviderUtils);
         verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
     }
 
     @Test
     public void testOneTrackTwoSegmentsNoTime() {
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-
+        // 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((Location[]) any(), eq(5), eq(TRACK_ID_0))).thenReturn(5);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
-        expectUpdateTrack(trackCaptor, true, TRACK_ID_0);
+        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);
-        Assert.assertEquals(TRACK_ID_0, trackId);
-        Assert.assertEquals(0, trackCaptor.getValue().getTripStatistics().getTotalTime());
 
-        verify(contentProviderUtils);
+        // then
+        verify(contentProviderUtils, atLeastOnce()).updateTrack(trackCaptor.capture());
+        Assert.assertEquals(TRACK_ID_0, trackId);
+
+        Assert.assertEquals(0, trackCaptor.getValue().getTripStatistics().getTotalTime());
         verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, -1L);
     }
 
@@ -199,7 +210,7 @@ public class GpxFileTrackImporterTest extends AbstractTestFileTrackImporter {
         when(contentProviderUtils.bulkInsertTrackPoint((Location[]) any(), anyInt(), anyLong())).thenReturn(1);
         when(contentProviderUtils.getFirstTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_0);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_0);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
+        when(contentProviderUtils.getTrack(PreferencesUtils.getRecordingTrackId(context))).thenReturn(null);
         contentProviderUtils.deleteTrack(context, TRACK_ID_0);
 
         InputStream inputStream = new ByteArrayInputStream(xml.getBytes());

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

@@ -27,11 +27,11 @@ import org.mockito.junit.MockitoJUnitRunner;
 import java.io.ByteArrayInputStream;
 import java.io.InputStream;
 
-import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.Track;
 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;
@@ -68,8 +68,7 @@ public class KmlFileTrackImporterTest extends AbstractTestFileTrackImporter {
 
     @Test
     public void testOneTrackOneSegment() throws Exception {
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-
+        // given
         Location location0 = createLocation(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
         Location location1 = createLocation(1, DATE_FORMAT_1.parse(TRACK_TIME_1).getTime());
 
@@ -77,27 +76,31 @@ public class KmlFileTrackImporterTest extends AbstractTestFileTrackImporter {
         expectFirstTrackPoint(location0, TRACK_ID_0, TRACK_POINT_ID_0);
 
         // A flush happens at the end
-        when(contentProviderUtils.bulkInsertTrackPoint(new Location[]{location1}, eq(1), eq(TRACK_ID_0))).thenReturn(1);
+        when(contentProviderUtils.bulkInsertTrackPoint((Location[]) any(), eq(1), eq(TRACK_ID_0))).thenReturn(1);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_1);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
-        expectUpdateTrack(trackCaptor, true, TRACK_ID_0);
+        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().getTripStatistics().getTotalTime());
-        verify(contentProviderUtils);
         verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, time0);
     }
 
     @Test
     public void testOneTrackTwoSegments() throws Exception {
-        ArgumentCaptor<Track> trackCaptor = ArgumentCaptor.forClass(Track.class);
-
+        // given
         Location location0 = createLocation(0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
 
         contentProviderUtils.clearTrack(context, TRACK_ID_0);
@@ -106,12 +109,18 @@ public class KmlFileTrackImporterTest extends AbstractTestFileTrackImporter {
         // A flush happens at the end
         when(contentProviderUtils.bulkInsertTrackPoint((Location[]) any(), eq(5), eq(TRACK_ID_0))).thenReturn(5);
         when(contentProviderUtils.getLastTrackPointId(TRACK_ID_0)).thenReturn(TRACK_POINT_ID_3);
-        when(contentProviderUtils.getTrack(PreferencesUtils.getLong(context, R.string.recording_track_id_key))).thenReturn(null);
-        expectUpdateTrack(trackCaptor, true, TRACK_ID_0);
+        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();
@@ -120,7 +129,6 @@ public class KmlFileTrackImporterTest extends AbstractTestFileTrackImporter {
         long time3 = DATE_FORMAT_1.parse(TRACK_TIME_3).getTime();
         Assert.assertEquals(time1 - time0 + time3 - time2, trackCaptor.getValue().getTripStatistics().getTotalTime());
 
-        verify(contentProviderUtils);
         verifyTrack(trackCaptor.getValue(), TRACK_NAME_0, TRACK_DESCRIPTION_0, DATE_FORMAT_0.parse(TRACK_TIME_0).getTime());
     }
 }

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

@@ -0,0 +1,54 @@
+package de.dennisguse.opentracks.services;
+
+import android.app.NotificationManager;
+import android.content.Context;
+import android.location.Location;
+
+import androidx.core.app.NotificationCompat;
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import static org.mockito.ArgumentMatchers.anyBoolean;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(MockitoJUnitRunner.class)
+public class TrackRecordingServiceNotificationManagerTest {
+
+    private Context context = ApplicationProvider.getApplicationContext();
+
+    @Mock
+    private Location locationMock;
+
+    @Mock
+    private NotificationCompat.Builder notificationCompatBuilder;
+
+    @Mock
+    private NotificationManager notificationManager;
+
+    @Test
+    public void updateLocation_triggersAlertOnlyOnFirstInaccurateLocation() {
+        when(locationMock.hasAccuracy()).thenReturn(true);
+        when(locationMock.getAccuracy()).thenReturn(999f);
+        when(notificationCompatBuilder.setContentText(anyString())).thenReturn(notificationCompatBuilder);
+        when(notificationCompatBuilder.setOnlyAlertOnce(anyBoolean())).thenReturn(notificationCompatBuilder);
+
+        TrackRecordingServiceNotificationManager subject = new TrackRecordingServiceNotificationManager(notificationManager, notificationCompatBuilder);
+
+        // when
+        subject.updateLocation(context, locationMock, 100);
+        subject.updateLocation(context, locationMock, 100);
+        subject.updateLocation(context, locationMock, 1000);
+        subject.updateLocation(context, locationMock, 100);
+
+        // then
+        verify(notificationCompatBuilder, times(6)).setOnlyAlertOnce(true);
+        verify(notificationCompatBuilder, times(2)).setOnlyAlertOnce(false);
+    }
+}

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

@@ -15,14 +15,12 @@
  */
 package de.dennisguse.opentracks.services;
 
-import android.content.BroadcastReceiver;
 import android.content.ContentProvider;
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.location.Location;
 import android.os.IBinder;
-import android.util.Log;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -38,7 +36,6 @@ import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Random;
 import java.util.concurrent.TimeUnit;
@@ -77,14 +74,12 @@ public class TrackRecordingServiceTest {
     private long trackId = Math.abs(new Random().nextLong());
 
     static Intent createStartIntent(Context context) {
-        Intent startIntent = new Intent();
-        startIntent.setClass(context, TrackRecordingService.class);
-        return startIntent;
+        return new Intent(context, TrackRecordingService.class);
     }
 
     static void updateAutoResumePrefs(Context context, int attempts, int timeoutMins) {
         PreferencesUtils.setInt(context, R.string.auto_resume_track_current_retry_key, attempts);
-        PreferencesUtils.setInt(context, R.string.auto_resume_track_timeout_key, timeoutMins);
+        PreferencesUtils.setString(context, R.string.auto_resume_track_timeout_key, "" + timeoutMins);
     }
 
     @Before
@@ -94,7 +89,7 @@ public class TrackRecordingServiceTest {
         };
         customContentProvider.attachInfo(context, null);
 
-        providerUtils = ContentProviderUtils.Factory.get(context);
+        providerUtils = new ContentProviderUtils(context);
 
         // Let's use default values.
         SharedPreferences sharedPreferences = PreferencesUtils.getSharedPreferences(context);
@@ -140,12 +135,15 @@ public class TrackRecordingServiceTest {
         createDummyTrack(trackId, System.currentTimeMillis(), true);
 
         // Clear the number of attempts and set the timeout to 10 min.
-        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, Integer.parseInt(context.getResources().getString(R.string.auto_resume_track_timeout_default)));
 
         // Start the service in "resume" mode (simulates the on-reboot action).
         Intent startIntent = createStartIntent(context);
         startIntent.putExtra(TrackRecordingService.RESUME_TRACK_EXTRA_NAME, true);
+        mServiceRule.startService(startIntent);
         ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
+        // then
         Assert.assertNotNull(service);
 
         // We expect to resume the previous track.
@@ -156,7 +154,7 @@ public class TrackRecordingServiceTest {
     @MediumTest
     @Test
     public void testResumeAfterReboot_simulateReboot() throws Exception {
-        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, Integer.parseInt(context.getResources().getString(R.string.auto_resume_track_timeout_default)));
         ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(createStartIntent(context)));
         Assert.assertFalse(service.isRecording());
 
@@ -165,15 +163,17 @@ public class TrackRecordingServiceTest {
         Assert.assertTrue(service.isRecording());
         Assert.assertEquals(id, service.getRecordingTrackId());
         mServiceRule.unbindService();
-        Assert.assertEquals(id, PreferencesUtils.getLong(context, R.string.recording_track_id_key));
+        Assert.assertEquals(id, PreferencesUtils.getRecordingTrackId(context));
 
         // Start the service in "resume" mode (simulates the on-reboot action).
+
         Intent startIntent = createStartIntent(context);
         startIntent.putExtra(TrackRecordingService.RESUME_TRACK_EXTRA_NAME, true);
         mServiceRule.startService(startIntent);
         service = ((ITrackRecordingService) mServiceRule.bindService(createStartIntent(context)));
-        Assert.assertNotNull(service);
 
+        // then
+        Assert.assertNotNull(service);
         Assert.assertTrue(service.isRecording());
     }
 
@@ -184,12 +184,15 @@ public class TrackRecordingServiceTest {
         createDummyTrack(trackId, System.currentTimeMillis(), false);
 
         // Clear the number of attempts and set the timeout to 10 min.
-        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, Integer.parseInt(context.getResources().getString(R.string.auto_resume_track_timeout_default)));
 
         // Start the service in "resume" mode (simulates the on-reboot action).
         Intent startIntent = createStartIntent(context);
         startIntent.putExtra(TrackRecordingService.RESUME_TRACK_EXTRA_NAME, true);
+        mServiceRule.startService(startIntent);
         ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
+        // then
         Assert.assertNotNull(service);
 
         // We don't expect to resume the previous track, because it was stopped.
@@ -201,15 +204,18 @@ public class TrackRecordingServiceTest {
     @Test
     public void testResumeAfterReboot_expiredTrack() throws Exception {
         // Insert a dummy track last updated 20 min ago.
-        createDummyTrack(trackId, System.currentTimeMillis() - 20 * 60 * 1000, true);
+        createDummyTrack(trackId, System.currentTimeMillis() - 1500 * 60 * 1000, true);
 
         // Clear the number of attempts and set the timeout to 10 min.
-        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+        updateAutoResumePrefs(context, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT, Integer.parseInt(context.getResources().getString(R.string.auto_resume_track_timeout_default)));
 
         // Start the service in "resume" mode (simulates the on-reboot action).
         Intent startIntent = createStartIntent(context);
         startIntent.putExtra(TrackRecordingService.RESUME_TRACK_EXTRA_NAME, true);
+        mServiceRule.startService(startIntent);
         ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
+        // then
         Assert.assertNotNull(service);
 
         // We don't expect to resume the previous track, because it has expired.
@@ -224,16 +230,15 @@ public class TrackRecordingServiceTest {
         createDummyTrack(trackId, System.currentTimeMillis(), true);
 
         // Set the number of attempts to max.
-        updateAutoResumePrefs(context, TrackRecordingService.MAX_AUTO_RESUME_TRACK_RETRY_ATTEMPTS, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+        updateAutoResumePrefs(context, TrackRecordingService.MAX_AUTO_RESUME_TRACK_RETRY_ATTEMPTS, Integer.parseInt(context.getResources().getString(R.string.auto_resume_track_timeout_default)));
 
         // Start the service in "resume" mode (simulates the on-reboot action).
         Intent startIntent = createStartIntent(context);
         startIntent.putExtra(TrackRecordingService.RESUME_TRACK_EXTRA_NAME, true);
-
-        //Explicit start service, so `startCommand()` is executed - which would be called by BootReceiver.
-        context.startService(startIntent);
-
+        mServiceRule.startService(startIntent);
         ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
+        //then
         Assert.assertNotNull(service);
 
         // We don't expect to resume the previous track, because there were already too many attempts.
@@ -247,7 +252,10 @@ public class TrackRecordingServiceTest {
         List<Track> tracks = providerUtils.getAllTracks();
         Assert.assertTrue(tracks.isEmpty());
 
-        ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(createStartIntent(context)));
+        Intent startIntent = createStartIntent(context);
+        mServiceRule.startService(startIntent);
+        ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
         // Test if we start in no-recording mode by default.
         Assert.assertFalse(service.isRecording());
         Assert.assertEquals(-1L, service.getRecordingTrackId());
@@ -266,11 +274,14 @@ public class TrackRecordingServiceTest {
     @MediumTest
     @Test
     public void testRecording_orphanedRecordingTrack() throws Exception {
+        Intent startIntent = createStartIntent(context);
+        ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(startIntent));
+
         // Just set recording track to a bogus value.
+        // Make sure that the service will not start recording and will clear the bogus track.
         PreferencesUtils.setLong(context, R.string.recording_track_id_key, 123L);
 
-        // Make sure that the service will not start recording and will clear the bogus track.
-        ITrackRecordingService service = ((ITrackRecordingService) mServiceRule.bindService(createStartIntent(context)));
+        // then
         Assert.assertFalse(service.isRecording());
         Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
     }
@@ -286,7 +297,7 @@ public class TrackRecordingServiceTest {
         long newTrackId = service.startNewTrack();
         Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, newTrackId);
 
-        Assert.assertEquals(trackId, PreferencesUtils.getLong(context, R.string.recording_track_id_key));
+        Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
         Assert.assertEquals(trackId, service.getRecordingTrackId());
     }
 
@@ -299,7 +310,7 @@ public class TrackRecordingServiceTest {
         // Ending the current track when there is no recording should not result in any error.
         service.endCurrentTrack();
 
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, PreferencesUtils.getLong(context, R.string.recording_track_id_key));
+        Assert.assertFalse(PreferencesUtils.isRecording(context));
         Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
     }
 
@@ -405,45 +416,4 @@ public class TrackRecordingServiceTest {
         Assert.assertNotNull(wpt.getLocation());
         Assert.assertNull(wpt.getTripStatistics());
     }
-
-    /**
-     * Synchronous/waitable broadcast receiver to be used in testing.
-     */
-    private class BlockingBroadcastReceiver extends BroadcastReceiver {
-        private static final long MAX_WAIT_TIME_MS = 3000;
-        private final List<Intent> receivedIntents = new ArrayList<>();
-
-        public List<Intent> getReceivedIntents() {
-            return receivedIntents;
-        }
-
-        @Override
-        public void onReceive(Context ctx, Intent intent) {
-            Log.d("Test", "Got broadcast: " + intent);
-            synchronized (receivedIntents) {
-                receivedIntents.add(intent);
-                receivedIntents.notifyAll();
-            }
-        }
-
-        public boolean waitUntilReceived(int receiveCount) {
-            long deadline = System.currentTimeMillis() + MAX_WAIT_TIME_MS;
-            synchronized (receivedIntents) {
-                while (receivedIntents.size() < receiveCount) {
-                    try {
-                        // Wait releases synchronized lock until it returns
-                        receivedIntents.wait(500);
-                    } catch (InterruptedException e) {
-                        // Do nothing
-                    }
-
-                    if (System.currentTimeMillis() > deadline) {
-                        return false;
-                    }
-                }
-            }
-
-            return true;
-        }
-    }
 }

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

@@ -68,7 +68,7 @@ public class TrackRecordingServiceTestLooper {
         };
         customContentProvider.attachInfo(context, null);
 
-        providerUtils = ContentProviderUtils.Factory.get(context);
+        providerUtils = new ContentProviderUtils(context);
 
         // Let's use default values.
         SharedPreferences sharedPreferences = PreferencesUtils.getSharedPreferences(context);
@@ -103,7 +103,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_voiceFrequencyDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.voice_frequency_key, PreferencesUtils.VOICE_FREQUENCY_DEFAULT);
+        PreferencesUtils.setInt(context, R.string.voice_frequency_key, Integer.parseInt(context.getResources().getString(R.string.voice_frequency_default)));
         fullRecordingSession();
     }
 
@@ -125,7 +125,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_maxRecordingDistanceDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.max_recording_distance_key, PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT);
+        PreferencesUtils.setInt(context, R.string.max_recording_distance_key, Integer.parseInt(context.getResources().getString(R.string.max_recording_distance_default)));
         fullRecordingSession();
     }
 
@@ -139,7 +139,8 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_minRecordingDistanceDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.recording_distance_interval_key, PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT);
+        int minRecordingIntervalDefault = Integer.parseInt(context.getResources().getString(R.string.min_recording_interval_default));
+        PreferencesUtils.setInt(context, R.string.recording_distance_interval_key, minRecordingIntervalDefault);
         fullRecordingSession();
     }
 
@@ -153,7 +154,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_splitFrequencyDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.split_frequency_key, PreferencesUtils.SPLIT_FREQUENCY_DEFAULT);
+        PreferencesUtils.setInt(context, R.string.split_frequency_key, Integer.parseInt(context.getResources().getString(R.string.split_frequency_default)));
         fullRecordingSession();
     }
 
@@ -174,7 +175,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_metricUnitsDefault() throws TimeoutException {
-        PreferencesUtils.setString(context, R.string.stats_units_key, PreferencesUtils.STATS_UNITS_DEFAULT);
+        PreferencesUtils.setString(context, R.string.stats_units_key, context.getString(R.string.stats_units_default));
         fullRecordingSession();
     }
 
@@ -188,7 +189,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_minRecordingIntervalDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.min_recording_interval_key, PreferencesUtils.MIN_RECORDING_INTERVAL_DEFAULT);
+        PreferencesUtils.setInt(context, R.string.min_recording_interval_key, Integer.parseInt(context.getResources().getString(R.string.min_recording_interval_default)));
         fullRecordingSession();
     }
 
@@ -202,7 +203,8 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testWithProperties_minRequiredAccuracyDefault() throws TimeoutException {
-        PreferencesUtils.setInt(context, R.string.recording_gps_accuracy_key, PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT);
+        int recordingGPSAccuracyDefault = Integer.parseInt(context.getResources().getString(R.string.recording_gps_accuracy_default));
+        PreferencesUtils.setInt(context, R.string.recording_gps_accuracy_key, recordingGPSAccuracyDefault);
         fullRecordingSession();
     }
 
@@ -225,7 +227,7 @@ public class TrackRecordingServiceTestLooper {
         Track track = providerUtils.getTrack(id);
         Assert.assertNotNull(track);
         Assert.assertEquals(id, track.getId());
-        Assert.assertEquals(id, PreferencesUtils.getLong(context, R.string.recording_track_id_key));
+        Assert.assertEquals(id, PreferencesUtils.getRecordingTrackId(context));
         Assert.assertEquals(id, service.getRecordingTrackId());
 
         // Insert a few points, markers and statistics.

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

@@ -1,557 +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.services.tasks;
-
-import android.content.Context;
-import android.os.Looper;
-import android.speech.tts.TextToSpeech;
-import android.speech.tts.TextToSpeech.OnInitListener;
-import android.speech.tts.TextToSpeech.OnUtteranceCompletedListener;
-import android.telephony.PhoneStateListener;
-import android.telephony.TelephonyManager;
-
-import androidx.test.core.app.ApplicationProvider;
-
-import org.junit.After;
-import org.junit.AfterClass;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.BeforeClass;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.mockito.ArgumentCaptor;
-import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
-
-import java.util.HashMap;
-import java.util.Locale;
-import java.util.concurrent.atomic.AtomicBoolean;
-
-import de.dennisguse.opentracks.stats.TripStatistics;
-
-import static org.mockito.Mockito.any;
-import static org.mockito.Mockito.eq;
-import static org.mockito.Mockito.reset;
-import static org.mockito.Mockito.same;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-
-
-/**
- * Tests for {@link AnnouncementPeriodicTask}.
- *
- * WARNING: I'm not responsible if your eyes start bleeding while reading this code.
- * You have been warned.
- * It's still better than no test, though.
- *
- * @author Rodrigo Damazio
- */
-@RunWith(MockitoJUnitRunner.class)
-public class AnnouncementPeriodicTaskTest {
-
-    // Use something other than our hardcoded value
-    private static final Locale DEFAULT_LOCALE = Locale.KOREAN;
-    private static final String ANNOUNCEMENT = "I can haz cheeseburger?";
-    private Locale oldDefaultLocale;
-
-    private Context context = ApplicationProvider.getApplicationContext();
-
-    private AnnouncementPeriodicTask task;
-    @Mock
-    private AnnouncementPeriodicTask mockTask;
-    private ArgumentCaptor<OnInitListener> initListenerCapture = ArgumentCaptor.forClass(OnInitListener.class);
-    private ArgumentCaptor<PhoneStateListener> phoneListenerCapture = ArgumentCaptor.forClass(PhoneStateListener.class);
-    private TextToSpeechDelegate ttsDelegate;
-    @Mock
-    private TextToSpeechInterface tts;
-
-    @BeforeClass
-    public static void preSetUp() {
-        // Prepare looper for Android's message queue
-        if (Looper.myLooper() == null) Looper.prepare();
-    }
-
-    @AfterClass
-    public static void finalTearDown() {
-        if (Looper.myLooper() != null) Looper.myLooper().quit();
-    }
-
-    @Before
-    public void setUp() throws Exception {
-        oldDefaultLocale = Locale.getDefault();
-        Locale.setDefault(DEFAULT_LOCALE);
-
-        // Eww, the effort required just to mock TextToSpeech is insane
-        final AtomicBoolean listenerCalled = new AtomicBoolean();
-        OnInitListener blockingListener = new OnInitListener() {
-            @Override
-            public void onInit(int status) {
-                synchronized (this) {
-                    listenerCalled.set(true);
-                    notify();
-                }
-            }
-        };
-
-        ttsDelegate = new TextToSpeechDelegate(context, blockingListener);
-
-        // Wait for all async operations done in the constructor to finish.
-        synchronized (blockingListener) {
-            while (!listenerCalled.get()) {
-                // Releases the synchronized lock until we're woken up.
-                blockingListener.wait();
-            }
-        }
-
-        // Create a partial forwarding mock
-        task = new AnnouncementPeriodicTask(context) {
-            @Override
-            protected TextToSpeech newTextToSpeech(Context ctx, OnInitListener onInitListener) {
-                return mockTask.newTextToSpeech(ctx, onInitListener);
-            }
-
-            @Override
-            protected String getAnnouncement(TripStatistics stats) {
-                return mockTask.getAnnouncement(stats);
-            }
-
-            @Override
-            protected void listenToPhoneState(PhoneStateListener listener, int events) {
-                mockTask.listenToPhoneState(listener, events);
-            }
-        };
-    }
-
-    @After
-    public void tearDown() {
-        Locale.setDefault(oldDefaultLocale);
-    }
-
-    @Test
-    public void testStart() {
-        doStart();
-        OnInitListener ttsInitListener = initListenerCapture.getValue();
-        Assert.assertNotNull(ttsInitListener);
-
-        ttsInitListener.onInit(TextToSpeech.SUCCESS);
-        //TODO
-        //verify(mockTask, tts);
-    }
-
-    @Test
-    public void testStart_notReady() {
-        doStart();
-        OnInitListener ttsInitListener = initListenerCapture.getValue();
-        Assert.assertNotNull(ttsInitListener);
-
-        ttsInitListener.onInit(TextToSpeech.ERROR);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testShutdown() {
-        // First, start
-        doStart();
-        verify(mockTask);
-        reset(mockTask);
-
-        // Then, shut down
-        PhoneStateListener phoneListener = phoneListenerCapture.getValue();
-        mockTask.listenToPhoneState(
-                same(phoneListener), eq(PhoneStateListener.LISTEN_NONE));
-        tts.shutdown();
-        task.shutdown();
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun() {
-        // when service data calls
-        TripStatistics stats = new TripStatistics();
-
-        // when announcement building call
-        when(mockTask.getAnnouncement(same(stats))).thenReturn(ANNOUNCEMENT);
-
-        // Put task in "ready" state
-        startTask(TextToSpeech.SUCCESS);
-
-        when(tts.isLanguageAvailable(DEFAULT_LOCALE)).thenReturn(TextToSpeech.LANG_AVAILABLE);
-        when(tts.setLanguage(DEFAULT_LOCALE)).thenReturn(TextToSpeech.LANG_AVAILABLE);
-        when(tts.setSpeechRate(AnnouncementPeriodicTask.TTS_SPEECH_RATE)).thenReturn(TextToSpeech.SUCCESS);
-        when(tts.setOnUtteranceCompletedListener((OnUtteranceCompletedListener) any())).thenReturn(0);
-
-        // Run the announcement
-        task.announce(stats);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_notReady() {
-        // Put task in "not ready" state
-        startTask(TextToSpeech.ERROR);
-
-        // Run the announcement
-        task.run(null);
-        //TODO
-        //verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_duringCall() {
-        startTask(TextToSpeech.SUCCESS);
-
-        when(tts.isSpeaking()).thenReturn(false);
-
-        // Run the announcement
-        PhoneStateListener phoneListener = phoneListenerCapture.getValue();
-        phoneListener.onCallStateChanged(TelephonyManager.CALL_STATE_OFFHOOK, null);
-        task.run(null);
-        //TODO
-        //verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_ringWhileSpeaking() {
-        startTask(TextToSpeech.SUCCESS);
-
-        when(tts.isSpeaking()).thenReturn(true);
-        when(tts.stop()).thenReturn(TextToSpeech.SUCCESS);
-
-        // Update the state to ringing - this should stop the current announcement.
-        PhoneStateListener phoneListener = phoneListenerCapture.getValue();
-        phoneListener.onCallStateChanged(TelephonyManager.CALL_STATE_RINGING, null);
-
-        // Run the announcement - this should do nothing.
-        task.run(null);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_whileRinging() {
-        startTask(TextToSpeech.SUCCESS);
-
-        when(tts.isSpeaking()).thenReturn(false);
-
-        // Run the announcement
-        PhoneStateListener phoneListener = phoneListenerCapture.getValue();
-        phoneListener.onCallStateChanged(TelephonyManager.CALL_STATE_RINGING, null);
-        task.run(null);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_noService() {
-        startTask(TextToSpeech.SUCCESS);
-
-        // Run the announcement
-        task.run(null);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    @Test
-    public void testRun_noStats() {
-        // when service data calls
-
-        startTask(TextToSpeech.SUCCESS);
-
-        // Run the announcement
-        task.run(null);
-        //TODO
-        //AndroidMock.verify(mockTask, tts);
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with time zero.
-     */
-    @Test
-    public void testGetAnnounceTime_time_zero() {
-        long time = 0; // 0 seconds
-        Assert.assertEquals("0 minutes 0 seconds", task.getAnnounceTime(time));
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with time one.
-     */
-    @Test
-    public void testGetAnnounceTime_time_one() {
-        long time = 1000; // 1 second
-        Assert.assertEquals("0 minutes 1 second", task.getAnnounceTime(time));
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with singular
-     * numbers with the hour unit.
-     */
-    @Test
-    public void testGetAnnounceTime_singular_has_hour() {
-        long time = (60 * 60 * 1000) + (60 * 1000) + (1000); // 1 hour 1 minute 1 second
-        Assert.assertEquals("1 hour 1 minute 1 second", task.getAnnounceTime(time));
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with plural numbers
-     * with the hour unit.
-     */
-    @Test
-    public void testGetAnnounceTime_plural_has_hour() {
-        long time = (2 * 60 * 60 * 1000) + (2 * 60 * 1000) + (2 * 1000); // 2 hours 2 minutes 2 seconds
-        Assert.assertEquals("2 hours 2 minutes 2 seconds", task.getAnnounceTime(time));
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with singular
-     * numbers without the hour unit.
-     */
-    @Test
-    public void testGetAnnounceTime_singular_no_hour() {
-        long time = (1 * 60 * 1000) + (1 * 1000); // 1 minute 1 second
-        Assert.assertEquals("1 minute 1 second", task.getAnnounceTime(time));
-    }
-
-    /**
-     * Tests {@link AnnouncementPeriodicTask#getAnnounceTime(long)} with plural numbers
-     * without the hour unit.
-     */
-    @Test
-    public void testGetAnnounceTime_plural_no_hour() {
-        long time = (2 * 60 * 1000) + (2 * 1000); // 2 minutes 2 seconds
-        Assert.assertEquals("2 minutes 2 seconds", task.getAnnounceTime(time));
-    }
-
-    private void startTask(int state) {
-        reset(tts);
-        doStart();
-        OnInitListener ttsInitListener = initListenerCapture.getValue();
-        ttsInitListener.onInit(state);
-        //TODO
-        reset(tts);
-        //AndroidMock.resetToDefault(tts);
-    }
-
-    private void doStart() {
-        mockTask.listenToPhoneState(phoneListenerCapture.capture(), eq(PhoneStateListener.LISTEN_CALL_STATE));
-        when(mockTask.newTextToSpeech(same(context), initListenerCapture.capture())).thenReturn(ttsDelegate);
-
-        task.start();
-    }
-
-    /**
-     * Mockable interface that we delegate TTS calls to.
-     */
-    interface TextToSpeechInterface {
-        int addEarcon(String earcon, String packagename, int resourceId);
-
-        int addEarcon(String earcon, String filename);
-
-        int addSpeech(String text, String packagename, int resourceId);
-
-        int addSpeech(String text, String filename);
-
-        boolean areDefaultsEnforced();
-
-        String getDefaultEngine();
-
-        Locale getLanguage();
-
-        int isLanguageAvailable(Locale loc);
-
-        boolean isSpeaking();
-
-        int playEarcon(String earcon, int queueMode,
-                       HashMap<String, String> params);
-
-        int playSilence(long durationInMs, int queueMode, HashMap<String, String> params);
-
-        int setLanguage(Locale loc);
-
-        int setOnUtteranceCompletedListener(OnUtteranceCompletedListener listener);
-
-        int setPitch(float pitch);
-
-        int setSpeechRate(float speechRate);
-
-        void shutdown();
-
-        int speak(String text, int queueMode, HashMap<String, String> params);
-
-        int stop();
-
-        int synthesizeToFile(String text, HashMap<String, String> params, String filename);
-    }
-
-    /**
-     * Subclass of {@link TextToSpeech} which delegates calls to the interface
-     * above.
-     * The logic here is stupid and the author is ashamed of having to write it
-     * like this, but basically the issue is that TextToSpeech cannot be mocked
-     * without running its constructor, its constructor runs async operations
-     * which call other methods (and then if the methods are part of a mock we'd
-     * have to set a behavior, but we can't 'cause the object hasn't been fully
-     * built yet).
-     * The logic is that calls made during the constructor (when tts is not yet
-     * set) will go up to the original class, but after tts is set we'll forward
-     * them all to the mock.
-     */
-    private class TextToSpeechDelegate extends TextToSpeech implements TextToSpeechInterface {
-        public TextToSpeechDelegate(Context context, OnInitListener listener) {
-            super(context, listener);
-        }
-
-        @Override
-        public int addEarcon(String earcon, String packagename, int resourceId) {
-            if (tts == null) {
-                return super.addEarcon(earcon, packagename, resourceId);
-            }
-            return tts.addEarcon(earcon, packagename, resourceId);
-        }
-
-        @Override
-        public int addEarcon(String earcon, String filename) {
-            if (tts == null) {
-                return super.addEarcon(earcon, filename);
-            }
-            return tts.addEarcon(earcon, filename);
-        }
-
-        @Override
-        public int addSpeech(String text, String packagename, int resourceId) {
-            if (tts == null) {
-                return super.addSpeech(text, packagename, resourceId);
-            }
-            return tts.addSpeech(text, packagename, resourceId);
-        }
-
-        @Override
-        public int addSpeech(String text, String filename) {
-            if (tts == null) {
-                return super.addSpeech(text, filename);
-            }
-            return tts.addSpeech(text, filename);
-        }
-
-        @Override
-        public Locale getLanguage() {
-            if (tts == null) {
-                return super.getLanguage();
-            }
-            return tts.getLanguage();
-        }
-
-        @Override
-        public int isLanguageAvailable(Locale loc) {
-            if (tts == null) {
-                return super.isLanguageAvailable(loc);
-            }
-            return tts.isLanguageAvailable(loc);
-        }
-
-        @Override
-        public boolean isSpeaking() {
-            if (tts == null) {
-                return super.isSpeaking();
-            }
-            return tts.isSpeaking();
-        }
-
-        @Override
-        public int playEarcon(String earcon, int queueMode, HashMap<String, String> params) {
-            if (tts == null) {
-                return super.playEarcon(earcon, queueMode, params);
-            }
-            return tts.playEarcon(earcon, queueMode, params);
-        }
-
-        @Override
-        public int playSilence(long durationInMs, int queueMode, HashMap<String, String> params) {
-            if (tts == null) {
-                return super.playSilence(durationInMs, queueMode, params);
-            }
-            return tts.playSilence(durationInMs, queueMode, params);
-        }
-
-        @Override
-        public int setLanguage(Locale loc) {
-            if (tts == null) {
-                return super.setLanguage(loc);
-            }
-            return tts.setLanguage(loc);
-        }
-
-        @Override
-        public int setOnUtteranceCompletedListener(OnUtteranceCompletedListener listener) {
-            if (tts == null) {
-                return super.setOnUtteranceCompletedListener(listener);
-            }
-            return tts.setOnUtteranceCompletedListener(listener);
-        }
-
-        @Override
-        public int setPitch(float pitch) {
-            if (tts == null) {
-                return super.setPitch(pitch);
-            }
-            return tts.setPitch(pitch);
-        }
-
-        @Override
-        public int setSpeechRate(float speechRate) {
-            if (tts == null) {
-                return super.setSpeechRate(speechRate);
-            }
-            return tts.setSpeechRate(speechRate);
-        }
-
-        @Override
-        public void shutdown() {
-            if (tts == null) {
-                super.shutdown();
-                return;
-            }
-            tts.shutdown();
-        }
-
-        @Override
-        public int speak(
-                String text, int queueMode, HashMap<String, String> params) {
-            if (tts == null) {
-                return super.speak(text, queueMode, params);
-            }
-            return tts.speak(text, queueMode, params);
-        }
-
-        @Override
-        public int stop() {
-            if (tts == null) {
-                return super.stop();
-            }
-            return tts.stop();
-        }
-
-        @Override
-        public int synthesizeToFile(String text, HashMap<String, String> params, String filename) {
-            if (tts == null) {
-                return super.synthesizeToFile(text, params, filename);
-            }
-            return tts.synthesizeToFile(text, params, filename);
-        }
-    }
-}

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

@@ -60,10 +60,15 @@ public class FileUtilsTest extends TestCase {
      */
     public void testSanitizeFileName() {
         String name = "Swim\10ming-^across:/the/ pacific (ocean).";
-        String expected = "Swim_ming-^across_the_ pacific (ocean)_";
+        String expected = "Swim_ming-^across_the_ pacific (ocean).";
         assertEquals(expected, FileUtils.sanitizeFileName(name));
     }
 
+    public void testSanitizeFileNameWithSuffix() {
+        String name = "FileName.jpeg";
+        assertEquals(name, FileUtils.sanitizeFileName(name));
+    }
+
     /**
      * Tests {@link FileUtils#sanitizeFileName(String)} with i18n characters (in Chinese and Russian).
      * Verifies that they are allowed.

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

@@ -131,7 +131,7 @@ public class StringUtilsTest {
         assertGetTime("2010-05-04T03:02:01.3", 2010, 5, 4, 3, 2, 1, 300);
         assertGetTime("2010-05-04T03:02:01.35", 2010, 5, 4, 3, 2, 1, 350);
         assertGetTime("2010-05-04T03:02:01.352Z", 2010, 5, 4, 3, 2, 1, 352);
-        assertGetTime("2010-05-04T03:02:01.3525Z", 2010, 5, 4, 3, 2, 1, 352);
+        assertGetTime("2010-05-04T03:02:01.3529Z", 2010, 5, 4, 3, 2, 1, 353);
     }
 
     /**
@@ -149,8 +149,7 @@ public class StringUtilsTest {
     }
 
     /**
-     * Tests {@link StringUtils#getTime(String)} with fractional seconds and time
-     * zone.
+     * Tests {@link StringUtils#getTime(String)} with fractional seconds and time zone.
      */
     @Test
     public void testGetTime_fractionalAndTimezone() {
@@ -183,7 +182,7 @@ public class StringUtilsTest {
      * Tests {@link StringUtils#getTimeParts(long)} with a positive number.
      */
     @Test
-    public void testGetTimeParts_postive() {
+    public void testGetTimeParts_positive() {
         int[] parts = StringUtils.getTimeParts(61000);
         Assert.assertEquals(1, parts[0]);
         Assert.assertEquals(1, parts[1]);
@@ -200,4 +199,24 @@ public class StringUtilsTest {
         Assert.assertEquals(-1, parts[1]);
         Assert.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));
+
+        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));
+
+        Assert.assertEquals("1", StringUtils.formatDecimal(0.99, 1));
+    }
 }

src/main/AndroidManifest.xml

@@ -16,8 +16,8 @@ limitations under the License.
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="de.dennisguse.opentracks"
     android:installLocation="auto"
-    android:versionCode="3054"
-    android:versionName="v3.2.0"> <!-- For FDroid. -->
+    android:versionCode="3162"
+    android:versionName="v3.2.8"> <!-- For FDroid. -->
     <!-- Permission to initialize services -->
     <application
         android:name=".Startup"
@@ -30,12 +30,12 @@ limitations under the License.
         <!-- Activities -->
         <activity android:name=".AboutActivity" />
 
-        <activity
-            android:name=".AggregatedStatsActivity"
-            android:label="@string/menu_aggregated_statistics" />
-
         <activity android:name=".DeleteActivity" />
 
+        <activity
+            android:name=".HelpActivity"
+            android:label="@string/menu_help" />
+
         <activity
             android:name=".io.file.importer.ImportActivity"
             android:theme="@style/ThemeCustomTransparent">
@@ -54,10 +54,10 @@ limitations under the License.
             </intent-filter>
         </activity>
 
-        <activity android:name=".MarkerEditActivity" />
-
         <activity android:name=".MarkerDetailActivity" />
 
+        <activity android:name=".MarkerEditActivity" />
+
         <activity
             android:name=".MarkerListActivity"
             android:label="@string/menu_markers">
@@ -83,7 +83,9 @@ limitations under the License.
 
         <activity android:name=".TrackEditActivity" />
 
-        <activity android:name=".TrackListActivity">
+        <activity
+            android:name=".TrackListActivity"
+            android:screenOrientation="userPortrait">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
@@ -97,12 +99,8 @@ limitations under the License.
             android:name=".io.file.exporter.ExportActivity"
             android:theme="@style/ThemeCustomTransparent" />
 
-        <activity android:name=".settings.RecordingSettingsActivity" />
-
         <activity android:name=".settings.SettingsActivity" />
 
-        <activity android:name=".settings.StatsSettingsActivity" />
-
         <!-- Services -->
         <provider
             android:name=".content.ShareContentProvider"
@@ -128,11 +126,11 @@ limitations under the License.
         </receiver>
 
         <!-- Providers -->
-
         <service
             android:name=".services.TrackRecordingService"
             android:enabled="true"
             android:exported="false"
+            android:foregroundServiceType="location|connectedDevice"
             android:icon="@drawable/ic_logo_color_24dp"
             android:label="@string/recording_service" />
     </application>

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

@@ -17,23 +17,28 @@
 package de.dennisguse.opentracks;
 
 import android.os.Bundle;
-import android.speech.tts.TextToSpeech;
 
-import androidx.fragment.app.FragmentActivity;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+
+import de.dennisguse.opentracks.util.TTSUtils;
 
 /**
  * @author Jimmy Shih
  */
-public abstract class AbstractActivity extends FragmentActivity {
+public abstract class AbstractActivity extends AppCompatActivity {
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
         // Set volume control stream for text to speech
-        setVolumeControlStream(TextToSpeech.Engine.DEFAULT_STREAM);
+        setVolumeControlStream(TTSUtils.getTTSStream());
 
         setContentView(getLayoutResId());
+
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
     }
 
     /**

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

@@ -16,24 +16,7 @@
 
 package de.dennisguse.opentracks;
 
-import android.app.Activity;
-import android.app.SearchManager;
-import android.content.ComponentName;
-import android.content.Context;
 import android.content.Intent;
-import android.util.Log;
-import android.util.SparseBooleanArray;
-import android.view.ActionMode;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.AbsListView;
-import android.widget.ListView;
-import android.widget.SearchView;
-
-import androidx.annotation.NonNull;
-
-import java.util.ArrayList;
 
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment.ConfirmDeleteCaller;
@@ -58,115 +41,6 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
     protected static final int GPS_REQUEST_CODE = 6;
     private static final int DELETE_REQUEST_CODE = 3;
 
-    public static void configureListViewContextualMenu(final ListView listView, final ContextualActionModeCallback contextualActionModeCallback) {
-        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
-        listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
-
-            @Override
-            public boolean onCreateActionMode(ActionMode mode, Menu menu) {
-                mode.getMenuInflater().inflate(R.menu.list_context_menu, menu);
-                return true;
-            }
-
-            @Override
-            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
-                contextualActionModeCallback.onPrepare(menu, getCheckedPositions(listView), listView.getCheckedItemIds(), true);
-                return true;
-            }
-
-            @Override
-            public void onDestroyActionMode(ActionMode mode) {
-                // Do nothing
-            }
-
-            @Override
-            public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
-                mode.invalidate();
-            }
-
-            @Override
-            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
-                if (contextualActionModeCallback.onClick(item.getItemId(), getCheckedPositions(listView), listView.getCheckedItemIds())) {
-                    mode.finish();
-                }
-                return true;
-            }
-
-            /**
-             * Gets the checked positions in a list view.
-             *
-             * @param list the list view
-             */
-            private int[] getCheckedPositions(ListView list) {
-                SparseBooleanArray positions = list.getCheckedItemPositions();
-                ArrayList<Integer> arrayList = new ArrayList<>();
-                for (int i = 0; i < positions.size(); i++) {
-                    int key = positions.keyAt(i);
-                    if (positions.valueAt(i)) {
-                        arrayList.add(key);
-                    }
-                }
-                int[] result = new int[arrayList.size()];
-                for (int i = 0; i < arrayList.size(); i++) {
-                    result[i] = arrayList.get(i);
-                }
-                return result;
-            }
-        });
-    }
-
-    public static void configureSearchWidget(Activity activity, final MenuItem menuItem, final TrackController trackController) {
-        final SearchView searchView = (SearchView) menuItem.getActionView();
-        SearchManager searchManager = (SearchManager) activity.getSystemService(Context.SEARCH_SERVICE);
-        if (searchManager != null) {
-            //NOTE: for some reason activity.getComponentName() did not trigger the SearchListActivity
-            searchView.setSearchableInfo(searchManager.getSearchableInfo(new ComponentName(activity, SearchListActivity.class)));
-        } else {
-            Log.w(TAG, "Could not retrieve SearchManager.");
-        }
-        searchView.setQueryRefinementEnabled(true);
-        searchView.setSubmitButtonEnabled(true);
-        searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
-
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                // Hide and show trackController when searchable widget has focus/no focus
-                if (trackController != null) {
-                    if (hasFocus) {
-                        trackController.hide();
-                    } else {
-                        trackController.show();
-                    }
-                }
-            }
-        });
-
-        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
-            @Override
-            public boolean onQueryTextSubmit(String query) {
-                menuItem.collapseActionView();
-                return false;
-            }
-
-            @Override
-            public boolean onQueryTextChange(String newText) {
-                return false;
-            }
-        });
-        searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
-            @Override
-            public boolean onSuggestionSelect(int position) {
-                return false;
-            }
-
-            @Override
-            public boolean onSuggestionClick(int position) {
-                menuItem.collapseActionView();
-                return false;
-            }
-        });
-    }
-
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == DELETE_REQUEST_CODE) {
@@ -182,8 +56,7 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
      * @param trackIds the track ids
      */
     protected void deleteTracks(long[] trackIds) {
-        ConfirmDeleteDialogFragment.newInstance(trackIds)
-                .show(getSupportFragmentManager(), ConfirmDeleteDialogFragment.CONFIRM_DELETE_DIALOG_TAG);
+        ConfirmDeleteDialogFragment.showDialog(getSupportFragmentManager(), trackIds);
     }
 
     @Override
@@ -192,7 +65,7 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
         if (trackIds.length == 1 && trackIds[0] == -1L) {
             stopRecording = true;
         } else {
-            long recordingTrackId = PreferencesUtils.getLong(this, R.string.recording_track_id_key);
+            long recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
             for (long trackId : trackIds) {
                 if (trackId == recordingTrackId) {
                     stopRecording = true;
@@ -209,10 +82,9 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
     }
 
     /**
-     * Gets the track recording service connection. For stopping the current
-     * recording if need to delete the current recording track.
+     * Gets the track recording service connection.
+     * For stopping the current recording if need to delete the current recording track.
      */
-    @NonNull
     abstract protected TrackRecordingServiceConnection getTrackRecordingServiceConnection();
 
     /**

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

@@ -1,62 +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;
-
-import android.os.Bundle;
-
-import java.util.List;
-
-import de.dennisguse.opentracks.content.ContentProviderUtils;
-import de.dennisguse.opentracks.content.Track;
-import de.dennisguse.opentracks.stats.TripStatistics;
-import de.dennisguse.opentracks.util.StatsUtils;
-
-/**
- * An activity to view aggregated stats from all recorded tracks.
- *
- * @author Fergus Nelson
- */
-public class AggregatedStatsActivity extends AbstractActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        StatsUtils.setTripStatisticsValues(this, getTripStatistics(), null);
-        StatsUtils.setLocationValues(this, null, false);
-    }
-
-    @Override
-    protected int getLayoutResId() {
-        return R.layout.stats;
-    }
-
-    /**
-     * Gets the aggregated trip statistics for all the recorded tracks or null if
-     * there is no track.
-     */
-    private TripStatistics getTripStatistics() {
-        List<Track> tracks = ContentProviderUtils.Factory.get(this).getAllTracks();
-        TripStatistics tripStatistics = null;
-        if (!tracks.isEmpty()) {
-            tripStatistics = new TripStatistics(tracks.iterator().next().getTripStatistics());
-            for (int i = 1; i < tracks.size(); i++) {
-                tripStatistics.merge(tracks.get(i).getTripStatistics());
-            }
-        }
-        return tripStatistics;
-    }
-}

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

@@ -69,7 +69,7 @@ public class DeleteAsyncTask extends AsyncTask<Void, Integer, Boolean> {
 
     @Override
     protected Boolean doInBackground(Void... params) {
-        ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
 
         if (trackIds.length == 1 && trackIds[0] == -1L) {
             contentProviderUtils.deleteAllTracks(context);

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

@@ -0,0 +1,9 @@
+package de.dennisguse.opentracks;
+
+public class HelpActivity extends AbstractActivity {
+
+    @Override
+    protected int getLayoutResId() {
+        return R.layout.help;
+    }
+}

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

@@ -61,7 +61,7 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
             return;
         }
 
-        ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
         Waypoint waypoint = contentProviderUtils.getWaypoint(markerId);
 
         markerIds = new ArrayList<>();

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

@@ -127,7 +127,7 @@ public class MarkerEditActivity extends AbstractActivity {
         if (newMarker) {
             statisticsSection.setVisibility(View.GONE);
             waypointSection.setVisibility(View.VISIBLE);
-            int nextWaypointNumber = trackId == -1L ? -1 : ContentProviderUtils.Factory.get(this).getNextWaypointNumber(trackId, WaypointType.WAYPOINT);
+            int nextWaypointNumber = trackId == -1L ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId, WaypointType.WAYPOINT);
             if (nextWaypointNumber == -1) {
                 nextWaypointNumber = 0;
             }
@@ -136,7 +136,7 @@ public class MarkerEditActivity extends AbstractActivity {
             waypointMarkerType.setText("");
             waypointDescription.setText("");
         } else {
-            waypoint = ContentProviderUtils.Factory.get(this).getWaypoint(markerId);
+            waypoint = new ContentProviderUtils(this).getWaypoint(markerId);
             if (waypoint == null) {
                 Log.d(TAG, "waypoint is null");
                 finish();
@@ -182,6 +182,6 @@ public class MarkerEditActivity extends AbstractActivity {
             waypoint.setCategory(waypointMarkerType.getText().toString());
             waypoint.setDescription(waypointDescription.getText().toString());
         }
-        ContentProviderUtils.Factory.get(this).updateWaypoint(waypoint);
+        new ContentProviderUtils(this).updateWaypoint(waypoint);
     }
 }

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

@@ -22,14 +22,11 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.database.Cursor;
 import android.os.Bundle;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 
@@ -46,6 +43,7 @@ import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointsColumns;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
@@ -71,7 +69,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     private SharedPreferences sharedPreferences;
 
     private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-    private boolean recordingTrackPaused = PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT;
+    private boolean recordingTrackPaused;
     /*
      * Note that sharedPreferenceChangeListener cannot be an anonymous inner
      * class. Anonymous inner class will get garbage collected.
@@ -81,11 +79,11 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
             // Note that the key can be null
-            if (key == null || key.equals(PreferencesUtils.getKey(MarkerListActivity.this, R.string.recording_track_id_key))) {
-                recordingTrackId = PreferencesUtils.getLong(MarkerListActivity.this, R.string.recording_track_id_key);
+            if (PreferencesUtils.isKey(MarkerListActivity.this, R.string.recording_track_id_key, key)) {
+                recordingTrackId = PreferencesUtils.getRecordingTrackId(MarkerListActivity.this);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(MarkerListActivity.this, R.string.recording_track_paused_key))) {
-                recordingTrackPaused = PreferencesUtils.getBoolean(MarkerListActivity.this, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            if (PreferencesUtils.isKey(MarkerListActivity.this, R.string.recording_track_paused_key, key)) {
+                recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(MarkerListActivity.this);
             }
             if (key != null) {
                 runOnUiThread(new Runnable() {
@@ -130,7 +128,9 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
+
+        contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
 
         long trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
@@ -175,7 +175,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
             }
         };
         listView.setAdapter(resourceCursorAdapter);
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
 
         LoaderManager.getInstance(this).initLoader(0, null, new LoaderCallbacks<Cursor>() {
             @NonNull
@@ -234,7 +234,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
         insertMarkerMenuItem = menu.findItem(R.id.marker_list_insert_marker);
 
         searchMenuItem = menu.findItem(R.id.marker_list_search);
-        AbstractListActivity.configureSearchWidget(this, searchMenuItem, null);
+        ActivityUtils.configureSearchWidget(this, searchMenuItem, null);
 
         return super.onCreateOptionsMenu(menu);
     }
@@ -256,24 +256,6 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
         return super.onOptionsItemSelected(item);
     }
 
-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new long[]{info.id})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
     /**
      * Handles a context item selection.
      *
@@ -300,8 +282,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
                 if (markerIds.length > 1 && markerIds.length == listView.getCount()) {
                     markerIds = new long[]{-1L};
                 }
-                DeleteMarkerDialogFragment.newInstance(markerIds)
-                        .show(getSupportFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), markerIds);
                 return true;
             case R.id.list_context_menu_select_all:
                 int size = listView.getCount();

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

@@ -22,14 +22,11 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.os.Bundle;
 import android.util.Log;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
@@ -55,6 +52,7 @@ import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.stats.TripStatistics;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
@@ -103,34 +101,35 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
     private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
 
-    private boolean recordingTrackPaused = PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT;
+    private boolean recordingTrackPaused;
 
     // Callback when an item is selected in the contextual action mode
     private ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
         @Override
         public void onPrepare(Menu menu, int[] positions, long[] ids, boolean showSelectAll) {
-            boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+            boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
             boolean isSingleSelection = positions.length == 1;
+
             boolean isSingleSelectionTrack;
             if (isSingleSelection) {
                 Map<String, Object> item = arrayAdapter.getItem(positions[0]);
-                Long trackId = (Long) item.get(TRACK_ID_FIELD);
-                Track track = contentProviderUtils.getTrack(trackId);
-
                 isSingleSelectionTrack = item.get(MARKER_ID_FIELD) == null;
             } else {
                 isSingleSelectionTrack = false;
             }
+
             // Not recording, one item, item is a track
-            menu.findItem(R.id.list_context_menu_share).setVisible(!isRecording && isSingleSelection && isSingleSelectionTrack);
-            //TODO Setup shareIntent.
+            MenuItem shareMenuItem = menu.findItem(R.id.list_context_menu_share);
+            if (isSingleSelectionTrack) {
+                shareMenuItem.setVisible(!isRecording);
+            }
 
             // One item, item is a marker
             menu.findItem(R.id.list_context_menu_show_on_map).setVisible(isSingleSelection && !isSingleSelectionTrack);
             // One item, can be a track or a marker
             menu.findItem(R.id.list_context_menu_edit).setVisible(isSingleSelection);
             // One item. If track, no restriction.
-            menu.findItem(R.id.list_context_menu_delete).setVisible(isSingleSelection && (isSingleSelectionTrack));
+            menu.findItem(R.id.list_context_menu_delete).setVisible(isSingleSelection && isSingleSelectionTrack);
             // Disable select all, no action is available for multiple selection
             menu.findItem(R.id.list_context_menu_select_all).setVisible(false);
         }
@@ -144,14 +143,14 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
     private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (key == null || key.equals(PreferencesUtils.getKey(SearchListActivity.this, R.string.stats_units_key))) {
+            if (PreferencesUtils.isKey(SearchListActivity.this, R.string.stats_units_key, key)) {
                 metricUnits = PreferencesUtils.isMetricUnits(SearchListActivity.this);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(SearchListActivity.this, R.string.recording_track_id_key))) {
-                recordingTrackId = PreferencesUtils.getLong(SearchListActivity.this, R.string.recording_track_id_key);
+            if (PreferencesUtils.isKey(SearchListActivity.this, R.string.recording_track_id_key, key)) {
+                recordingTrackId = PreferencesUtils.getRecordingTrackId(SearchListActivity.this);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(SearchListActivity.this, R.string.recording_track_paused_key))) {
-                recordingTrackPaused = PreferencesUtils.getBoolean(SearchListActivity.this, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            if (PreferencesUtils.isKey(SearchListActivity.this, R.string.recording_track_paused_key, key)) {
+                recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(SearchListActivity.this);
             }
             if (key != null) {
                 runOnUiThread(new Runnable() {
@@ -169,7 +168,9 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         super.onCreate(savedInstanceState);
         setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);
 
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
+
+        contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
         trackRecordingServiceConnection = new TrackRecordingServiceConnection(this, null);
         searchEngine = new SearchEngine(contentProviderUtils);
@@ -222,7 +223,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                 startActivity(intent);
             }
         });
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
         handleIntent(getIntent());
     }
 
@@ -259,24 +260,6 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         handleIntent(intent);
     }
 
-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new int[]{info.position})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_SEARCH) {
@@ -301,13 +284,14 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         Long markerId = (Long) item.get(MARKER_ID_FIELD);
         Intent intent;
         switch (itemId) {
-            case R.id.list_context_menu_share:
-                //TODO
-                Log.e(TAG, "Not implemented");
-                return true;
             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 = Intent.createChooser(intent, null);
+                startActivity(intent);
+                return true;
             case R.id.list_context_menu_edit:
                 if (markerId != null) {
                     intent = IntentUtils.newIntent(this, MarkerEditActivity.class)
@@ -323,7 +307,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                 return true;
             case R.id.list_context_menu_delete:
                 if (markerId != null) {
-                    DeleteMarkerDialogFragment.newInstance(new long[]{markerId}).show(getSupportFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), new long[]{markerId});
                 } else {
                     deleteTracks(new long[]{trackId});
                 }

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

@@ -24,6 +24,7 @@ import android.widget.TabHost;
 import android.widget.TabHost.TabContentFactory;
 import android.widget.TabWidget;
 
+import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentPagerAdapter;
@@ -79,6 +80,7 @@ public class TabsAdapter extends FragmentPagerAdapter implements TabHost.OnTabCh
     }
 
     @Override
+    @NonNull
     public Fragment getItem(int position) {
         TabInfo info = tabInfos.get(position);
         return Fragment.instantiate(context, info.clss.getName(), info.bundle);

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

@@ -130,11 +130,11 @@ public class TrackController {
         handlerUpdateTotalTime.removeCallbacks(updateTotalTimeRunnable);
     }
 
-    void hide() {
+    public void hide() {
         containerView.setVisibility(View.GONE);
     }
 
-    void show() {
+    public void show() {
         containerView.setVisibility(View.VISIBLE);
     }
 

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

@@ -31,7 +31,6 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.WindowManager;
-import android.widget.ShareActionProvider;
 import android.widget.TabHost;
 import android.widget.TabHost.TabSpec;
 import android.widget.Toast;
@@ -46,17 +45,17 @@ import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointCreationRequest;
-import de.dennisguse.opentracks.fragments.ChartFragment;
+import de.dennisguse.opentracks.fragments.ChartDistanceFragment;
+import de.dennisguse.opentracks.fragments.ChartTimeFragment;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
-import de.dennisguse.opentracks.fragments.FrequencyDialogFragment;
 import de.dennisguse.opentracks.fragments.StatsFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.settings.SettingsActivity;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.StatsUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.TrackUtils;
 
@@ -66,7 +65,7 @@ import de.dennisguse.opentracks.util.TrackUtils;
  * @author Leif Hendrik Wilden
  * @author Rodrigo Damazio
  */
-public class TrackDetailActivity extends AbstractListActivity implements ChooseActivityTypeCaller, ConfirmDeleteDialogFragment.ConfirmDeleteCaller {
+public class TrackDetailActivity extends AbstractListActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller, ConfirmDeleteDialogFragment.ConfirmDeleteCaller {
 
     public static final String EXTRA_TRACK_ID = "track_id";
     public static final String EXTRA_MARKER_ID = "marker_id";
@@ -96,8 +95,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
 
     // Preferences
     private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-    private boolean recordingTrackPaused = PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT;
-    private boolean showOnLockScreen = PreferencesUtils.SHOW_TRACKDETAIL_WHILE_RECORDING_ON_LOCKSCREEN;
+    private boolean recordingTrackPaused;
 
     private final Runnable bindChangedCallback = new Runnable() {
         @Override
@@ -124,20 +122,18 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
      * Note that sharedPreferenceChangeListener cannot be an anonymous inner
      * class. Anonymous inner class will get garbage collected.
      */
-    private final OnSharedPreferenceChangeListener
-            sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
+    private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (key == null || key.equals(PreferencesUtils.getKey(TrackDetailActivity.this, R.string.recording_track_id_key))) {
-                recordingTrackId = PreferencesUtils.getLong(TrackDetailActivity.this, R.string.recording_track_id_key);
+            if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.recording_track_id_key, key)) {
+                recordingTrackId = PreferencesUtils.getRecordingTrackId(TrackDetailActivity.this);
             }
 
-            if (key == null || key.equals(PreferencesUtils.getKey(TrackDetailActivity.this, R.string.recording_track_paused_key))) {
-                recordingTrackPaused = PreferencesUtils.getBoolean(TrackDetailActivity.this, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.recording_track_paused_key, key)) {
+                recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(TrackDetailActivity.this);
             }
 
-            if (key == null || key.equals(PreferencesUtils.getKey(TrackDetailActivity.this, R.string.trackdetail_show_on_lockscreen_while_recording_key))) {
-                showOnLockScreen = PreferencesUtils.getBoolean(TrackDetailActivity.this, R.string.trackdetail_show_on_lockscreen_while_recording_key, PreferencesUtils.SHOW_TRACKDETAIL_WHILE_RECORDING_ON_LOCKSCREEN);
+            if (PreferencesUtils.isKey(TrackDetailActivity.this, R.string.stats_show_on_lockscreen_while_recording_key, key)) {
                 setLockscreenPolicy();
             }
 
@@ -158,8 +154,6 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     private MenuItem insertPhotoMenuItem;
     private MenuItem markerListMenuItem;
     private MenuItem shareMenuItem;
-    private MenuItem voiceFrequencyMenuItem;
-    private MenuItem splitFrequencyMenuItem;
 
     private final OnClickListener recordListener = new OnClickListener() {
         @Override
@@ -189,11 +183,13 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
+
         hasCamera = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA);
         photoUri = savedInstanceState != null ? (Uri) savedInstanceState.getParcelable(PHOTO_URI_KEY) : null;
         hasPhoto = savedInstanceState != null && savedInstanceState.getBoolean(HAS_PHOTO_KEY, false);
 
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        contentProviderUtils = new ContentProviderUtils(this);
         handleIntent(getIntent());
 
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
@@ -210,8 +206,11 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
         TabSpec statsTabSpec = tabHost.newTabSpec(StatsFragment.STATS_FRAGMENT_TAG).setIndicator(getString(R.string.track_detail_stats_tab));
         tabsAdapter.addTab(statsTabSpec, StatsFragment.class, null);
 
-        TabSpec chartTabSpec = tabHost.newTabSpec(ChartFragment.CHART_FRAGMENT_TAG).setIndicator(getString(R.string.track_detail_chart_tab));
-        tabsAdapter.addTab(chartTabSpec, ChartFragment.class, null);
+        TabSpec chartTimeTabSpec = tabHost.newTabSpec(ChartTimeFragment.CHART_FRAGMENT_TAG).setIndicator(getString(R.string.settings_chart_by_time));
+        tabsAdapter.addTab(chartTimeTabSpec, ChartTimeFragment.class, null);
+
+        TabSpec chartDistanceTabSpec = tabHost.newTabSpec(ChartDistanceFragment.CHART_FRAGMENT_TAG).setIndicator(getString(R.string.settings_chart_by_distance));
+        tabsAdapter.addTab(chartDistanceTabSpec, ChartDistanceFragment.class, null);
 
         if (savedInstanceState != null) {
             tabHost.setCurrentTabByTag(savedInstanceState.getString(CURRENT_TAB_TAG_KEY));
@@ -232,12 +231,14 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     }
 
     private void setLockscreenPolicy() {
+        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackDetailActivity.this);
+
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
             setShowWhenLocked(showOnLockScreen);
+        } else if (showOnLockScreen) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
         } else {
-            if (showOnLockScreen)
-                getWindow().addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
-            else getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED);
         }
     }
 
@@ -277,7 +278,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     }
 
     @Override
-    protected void onSaveInstanceState(Bundle outState) {
+    protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putString(CURRENT_TAB_TAG_KEY, tabHost.getCurrentTabTag());
         if (photoUri != null) {
@@ -317,13 +318,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
         insertMarkerMenuItem = menu.findItem(R.id.track_detail_insert_marker);
         insertPhotoMenuItem = menu.findItem(R.id.track_detail_insert_photo);
         insertPhotoMenuItem.setVisible(new Intent(MediaStore.ACTION_IMAGE_CAPTURE).resolveActivity(getPackageManager()) != null);
-
         shareMenuItem = menu.findItem(R.id.track_detail_share);
-        ShareActionProvider shareActionProvider = (ShareActionProvider) shareMenuItem.getActionProvider();
-        shareActionProvider.setShareIntent(IntentUtils.newShareFileIntent(this, new long[]{trackId}));
-
-        voiceFrequencyMenuItem = menu.findItem(R.id.track_detail_voice_frequency);
-        splitFrequencyMenuItem = menu.findItem(R.id.track_detail_split_frequency);
         markerListMenuItem = menu.findItem(R.id.track_detail_markers);
 
         return super.onCreateOptionsMenu(menu);
@@ -345,6 +340,11 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
                         .putExtra(MarkerEditActivity.EXTRA_TRACK_ID, trackId);
                 startActivity(intent);
                 return true;
+            case R.id.track_detail_share:
+                intent = IntentUtils.newShareFileIntent(this, new long[]{trackId});
+                intent = Intent.createChooser(intent, null);
+                startActivity(intent);
+                return true;
             case R.id.track_detail_insert_photo:
                 if (!FileUtils.isExternalStorageWriteable() || ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {
                     ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, EXTERNAL_STORAGE_PERMISSION_REQUEST_CODE);
@@ -360,14 +360,6 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
                         .putExtra(MarkerListActivity.EXTRA_TRACK_ID, trackId);
                 startActivity(intent);
                 return true;
-            case R.id.track_detail_voice_frequency:
-                FrequencyDialogFragment.newInstance(R.string.voice_frequency_key, PreferencesUtils.VOICE_FREQUENCY_DEFAULT, R.string.menu_voice_frequency)
-                        .show(getSupportFragmentManager(), FrequencyDialogFragment.FREQUENCY_DIALOG_TAG);
-                return true;
-            case R.id.track_detail_split_frequency:
-                FrequencyDialogFragment.newInstance(R.string.split_frequency_key, PreferencesUtils.SPLIT_FREQUENCY_DEFAULT, R.string.menu_split_frequency)
-                        .show(getSupportFragmentManager(), FrequencyDialogFragment.FREQUENCY_DIALOG_TAG);
-                return true;
             case R.id.track_detail_edit:
                 intent = IntentUtils.newIntent(this, TrackEditActivity.class)
                         .putExtra(TrackEditActivity.EXTRA_TRACK_ID, trackId);
@@ -395,6 +387,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
             }
             return;
         }
+
         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
     }
 
@@ -423,10 +416,16 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     /**
      * Gets the track id.
      */
+    // TODO Seems to be no used.
+    @Deprecated
     public long getTrackId() {
         return trackId;
     }
 
+    private void setBluetoothHeartRateSensorName(String sensorName) {
+        StatsUtils.setBluetoothHeartRateSensorName(this, sensorName, isRecording());
+    }
+
     /**
      * Handles the data in the intent.
      */
@@ -468,8 +467,6 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
         insertPhotoMenuItem.setVisible(hasCamera && isRecording() && !isPaused);
         shareMenuItem.setVisible(!isRecording());
         markerListMenuItem.setShowAsAction(isRecording() ? MenuItem.SHOW_AS_ACTION_NEVER : MenuItem.SHOW_AS_ACTION_IF_ROOM);
-        voiceFrequencyMenuItem.setVisible(isRecording());
-        splitFrequencyMenuItem.setVisible(isRecording());
         String title;
         if (isRecording()) {
             title = getString(isPaused ? R.string.generic_paused : R.string.generic_recording);
@@ -487,7 +484,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
     }
 
     public void chooseActivityType(String category) {
-        ChooseActivityTypeDialogFragment.newInstance(category).show(getSupportFragmentManager(), ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+        ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), category);
     }
 
     @Override

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

@@ -28,10 +28,11 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Spinner;
 
+import androidx.annotation.NonNull;
+
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.TrackUtils;
@@ -41,7 +42,7 @@ import de.dennisguse.opentracks.util.TrackUtils;
  *
  * @author Leif Hendrik Wilden
  */
-public class TrackEditActivity extends AbstractActivity implements ChooseActivityTypeCaller {
+public class TrackEditActivity extends AbstractActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller {
 
     public static final String EXTRA_TRACK_ID = "track_id";
     public static final String EXTRA_NEW_TRACK = "new_track";
@@ -72,7 +73,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
             return;
         }
 
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        contentProviderUtils = new ContentProviderUtils(this);
         track = contentProviderUtils.getTrack(trackId);
         if (track == null) {
             Log.e(TAG, "No track for " + trackId);
@@ -119,9 +120,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
             @Override
             public boolean onTouch(View v, MotionEvent event) {
                 if (event.getAction() == MotionEvent.ACTION_UP) {
-                    ChooseActivityTypeDialogFragment.newInstance(activityType.getText().toString()).show(
-                            getSupportFragmentManager(),
-                            ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
                 }
                 return true;
             }
@@ -130,9 +129,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
             @Override
             public boolean onKey(View v, int keyCode, KeyEvent event) {
                 if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
-                    ChooseActivityTypeDialogFragment.newInstance(activityType.getText().toString()).show(
-                            getSupportFragmentManager(),
-                            ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
                 }
                 return true;
             }
@@ -182,7 +179,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
     }
 
     @Override
-    public void onSaveInstanceState(Bundle outState) {
+    public void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
         outState.putString(ICON_VALUE_KEY, iconValue);
     }

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

@@ -28,8 +28,6 @@ import android.location.LocationManager;
 import android.os.Bundle;
 import android.provider.Settings;
 import android.util.Log;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.Menu;
@@ -37,14 +35,12 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
-import android.widget.SearchView;
-import android.widget.ShareActionProvider;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.SearchView;
 import androidx.core.app.ActivityCompat;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
@@ -60,9 +56,11 @@ import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.services.ITrackRecordingService;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.settings.SettingsActivity;
+import de.dennisguse.opentracks.util.ActivityUtils;
 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;
@@ -117,10 +115,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         public void onPrepare(Menu menu, int[] positions, long[] trackIds, boolean showSelectAll) {
             boolean isSingleSelection = trackIds.length == 1;
 
-            MenuItem shareMenuItem = menu.findItem(R.id.list_context_menu_share);
-            ShareActionProvider shareActionProvider = (ShareActionProvider) shareMenuItem.getActionProvider();
-            shareActionProvider.setShareIntent(trackIds.length == 0 ? null : IntentUtils.newShareFileIntent(TrackListActivity.this, trackIds));
-
             menu.findItem(R.id.list_context_menu_edit).setVisible(isSingleSelection);
             menu.findItem(R.id.list_context_menu_select_all).setVisible(showSelectAll);
         }
@@ -131,7 +125,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         }
     };
 
-    private boolean recordingTrackPaused = PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT;
+    private boolean recordingTrackPaused;
 
     /*
      * Note that sharedPreferenceChangeListener cannot be an anonymous inner class.
@@ -141,22 +135,17 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
             sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (key == null || key.equals(PreferencesUtils.getKey(TrackListActivity.this, R.string.stats_units_key))) {
+            if (PreferencesUtils.isKey(TrackListActivity.this, R.string.stats_units_key, key)) {
                 metricUnits = PreferencesUtils.isMetricUnits(TrackListActivity.this);
             }
-            if (key == null || key.equals(
-                    PreferencesUtils.getKey(TrackListActivity.this, R.string.recording_track_id_key))) {
-                recordingTrackId = PreferencesUtils.getLong(
-                        TrackListActivity.this, R.string.recording_track_id_key);
-                if (key != null && recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
+            if (PreferencesUtils.isKey(TrackListActivity.this, R.string.recording_track_id_key, key)) {
+                recordingTrackId = PreferencesUtils.getRecordingTrackId(TrackListActivity.this);
+                if (key != null && PreferencesUtils.isRecording(recordingTrackId)) {
                     trackRecordingServiceConnection.startAndBind();
                 }
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(
-                    TrackListActivity.this, R.string.recording_track_paused_key))) {
-                recordingTrackPaused = PreferencesUtils.getBoolean(TrackListActivity.this,
-                        R.string.recording_track_paused_key,
-                        PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            if (PreferencesUtils.isKey(TrackListActivity.this, R.string.recording_track_paused_key, key)) {
+                recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(TrackListActivity.this);
             }
             if (key != null) {
                 runOnUiThread(new Runnable() {
@@ -164,7 +153,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                     public void run() {
                         TrackListActivity.this.invalidateOptionsMenu();
                         LoaderManager.getInstance(TrackListActivity.this).restartLoader(0, null, loaderCallbacks);
-                        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+                        boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
                         trackController.update(isRecording, recordingTrackPaused);
                     }
                 });
@@ -175,7 +164,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     // Menu items
     private MenuItem searchMenuItem;
     private MenuItem startGpsMenuItem;
-    private MenuItem aggregatedStatisticsMenuItem;
     private MenuItem deleteAllMenuItem;
 
     private final OnClickListener stopListener = new OnClickListener() {
@@ -200,7 +188,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
             runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
-                    trackController.update(recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, recordingTrackPaused);
+                    trackController.update(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused);
                 }
             });
 
@@ -233,12 +221,11 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     private final OnClickListener recordListener = new OnClickListener() {
         public void onClick(View v) {
-            if (recordingTrackId == PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
+            if (!PreferencesUtils.isRecording(recordingTrackId)) {
                 // Not recording -> Recording
                 updateMenuItems(false, true);
                 startRecording();
-            } else {
-                if (recordingTrackPaused) {
+            } else if (recordingTrackPaused) {
                     // Paused -> Resume
                     updateMenuItems(false, true);
                     trackRecordingServiceConnection.resumeTrack();
@@ -249,7 +236,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                     trackRecordingServiceConnection.pauseTrack();
                     trackController.update(true, true);
                 }
-            }
         }
     };
 
@@ -257,7 +243,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
+
+        contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
 
         trackRecordingServiceConnection = new TrackRecordingServiceConnection(this, bindChangedCallback);
@@ -317,7 +305,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
             }
         };
         listView.setAdapter(resourceCursorAdapter);
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
 
         LoaderManager.getInstance(this).initLoader(0, null, loaderCallbacks);
         showStartupDialogs();
@@ -339,8 +328,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         // Update UI
         this.invalidateOptionsMenu();
         LoaderManager.getInstance(this).restartLoader(0, null, loaderCallbacks);
-        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-        trackController.onResume(isRecording, recordingTrackPaused);
+        trackController.onResume(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused);
     }
 
     @Override
@@ -380,10 +368,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         getMenuInflater().inflate(R.menu.track_list, menu);
 
         searchMenuItem = menu.findItem(R.id.track_list_search);
-        AbstractListActivity.configureSearchWidget(this, searchMenuItem, trackController);
+        ActivityUtils.configureSearchWidget(this, searchMenuItem, trackController);
 
         startGpsMenuItem = menu.findItem(R.id.track_list_start_gps);
-        aggregatedStatisticsMenuItem = menu.findItem(R.id.track_list_aggregated_statistics);
         deleteAllMenuItem = menu.findItem(R.id.track_list_delete_all);
 
         return super.onCreateOptionsMenu(menu);
@@ -391,14 +378,13 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        boolean isGpsStarted = TrackRecordingServiceConnection.isRecordingServiceRunning(this);
-        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        boolean isGpsStarted = ServiceUtils.isTrackRecordingServiceRunning(this);
+        boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
         updateMenuItems(isGpsStarted, isRecording);
 
-        View searchView = searchMenuItem.getActionView();
-        if (searchView instanceof SearchView) {
-            ((SearchView) searchView).setQuery("", false);
-        }
+        SearchView searchView = (SearchView) searchMenuItem.getActionView();
+        searchView.setQuery("", false);
+
         return super.onPrepareOptionsMenu(menu);
     }
 
@@ -412,7 +398,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                     intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                     startActivity(intent);
                 } else {
-                    startGps = !TrackRecordingServiceConnection.isRecordingServiceRunning(this);
+                    startGps = !ServiceUtils.isTrackRecordingServiceRunning(this);
 
                     // Show toast
                     Toast toast = Toast.makeText(this, startGps ? R.string.gps_starting : R.string.gps_stopping, Toast.LENGTH_SHORT);
@@ -439,10 +425,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 intent = IntentUtils.newIntent(this, MarkerListActivity.class);
                 startActivity(intent);
                 return true;
-            case R.id.track_list_aggregated_statistics:
-                intent = IntentUtils.newIntent(this, AggregatedStatsActivity.class);
-                startActivity(intent);
-                return true;
             case R.id.track_list_delete_all:
                 deleteTracks(new long[]{-1L});
                 return true;
@@ -454,24 +436,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         return super.onOptionsItemSelected(item);
     }
 
-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new long[]{info.id})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
     @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         if (keyCode == KeyEvent.KEYCODE_SEARCH && searchMenuItem != null) {
@@ -531,9 +495,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 startGpsMenuItem.setIcon(isGpsStarted ? R.drawable.ic_gps_fixed_24dp : R.drawable.ic_gps_off_24dp);
             }
         }
-        if (aggregatedStatisticsMenuItem != null) {
-            aggregatedStatisticsMenuItem.setVisible(hasTrack);
-        }
         if (deleteAllMenuItem != null) {
             deleteAllMenuItem.setVisible(hasTrack && !isRecording);
         }
@@ -562,12 +523,18 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
      * @return true if handled.
      */
     private boolean handleContextItem(int itemId, long[] trackIds) {
+        Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
                 IntentUtils.showTrackOnMap(this, trackIds);
                 return true;
+            case R.id.list_context_menu_share:
+                intent = IntentUtils.newShareFileIntent(this, trackIds);
+                intent = Intent.createChooser(intent, null);
+                startActivity(intent);
+                return true;
             case R.id.list_context_menu_edit:
-                Intent intent = IntentUtils.newIntent(this, TrackEditActivity.class)
+                intent = IntentUtils.newIntent(this, TrackEditActivity.class)
                         .putExtra(TrackEditActivity.EXTRA_TRACK_ID, trackIds[0]);
                 startActivity(intent);
                 return true;

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

@@ -14,7 +14,7 @@
  * the License.
  */
 
-package de.dennisguse.opentracks;
+package de.dennisguse.opentracks.chart;
 
 import android.content.Context;
 import android.graphics.Canvas;

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

@@ -14,7 +14,7 @@
  * the License.
  */
 
-package de.dennisguse.opentracks;
+package de.dennisguse.opentracks.chart;
 
 import android.content.Context;
 import android.content.Intent;
@@ -27,15 +27,19 @@ import android.graphics.Paint.Style;
 import android.graphics.Path;
 import android.graphics.Rect;
 import android.graphics.drawable.Drawable;
+import android.view.GestureDetector;
 import android.view.MotionEvent;
-import android.view.VelocityTracker;
+import android.view.ScaleGestureDetector;
 import android.view.View;
-import android.view.ViewConfiguration;
 import android.widget.Scroller;
 
+import androidx.core.view.GestureDetectorCompat;
+
 import java.text.NumberFormat;
 import java.util.ArrayList;
 
+import de.dennisguse.opentracks.MarkerDetailActivity;
+import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.stats.ExtremityMonitor;
 import de.dennisguse.opentracks.util.IntentUtils;
@@ -44,6 +48,7 @@ import de.dennisguse.opentracks.util.UnitConversions;
 
 /**
  * Visualization of the chart.
+ * Provides support for zooming (via pinch), scrolling, flinging, and selecting shown markers (single touch).
  *
  * @author Sandor Dornbush
  * @author Leif Hendrik Wilden
@@ -91,8 +96,6 @@ public class ChartView extends View {
     private final int markerHeight;
     private final Scroller scroller;
     private double maxX = 1.0;
-    private VelocityTracker velocityTracker = null;
-    private float lastMotionEventX = -1;
     private int zoomLevel = 1;
 
     private int leftBorder = BORDER;
@@ -107,18 +110,84 @@ public class ChartView extends View {
     private int effectiveWidth = 0;
     private int effectiveHeight = 0;
 
-    private boolean chartByDistance = true;
+    private boolean chartByDistance;
     private boolean metricUnits = true;
     private boolean reportSpeed = true;
     private boolean showPointer = false;
 
-    /**
-     * Constructor.
-     *
-     * @param context the context
-     */
-    public ChartView(Context context) {
+    private GestureDetectorCompat detectorScrollFlingTab = new GestureDetectorCompat(getContext(), new GestureDetector.SimpleOnGestureListener() {
+
+        @Override
+        public boolean onDown(MotionEvent e) {
+            if (!scroller.isFinished()) {
+                scroller.abortAnimation();
+            }
+            return true;
+        }
+
+        @Override
+        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
+            if (Math.abs(distanceX) > 0) {
+                int availableToScroll = effectiveWidth * (zoomLevel - 1) - getScrollX();
+                if (availableToScroll > 0) {
+                    scrollBy(Math.min(availableToScroll, (int) distanceX));
+                }
+            }
+            return true;
+        }
+
+        @Override
+        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
+            fling((int) -velocityX);
+            return true;
+        }
+
+        @Override
+        public boolean onSingleTapConfirmed(MotionEvent event) {
+            // Check if the y event is within markerHeight of the marker center
+            if (Math.abs(event.getY() - topBorder - spacer - markerHeight / 2) < markerHeight) {
+                int minDistance = Integer.MAX_VALUE;
+                Waypoint nearestWaypoint = null;
+                synchronized (waypoints) {
+                    for (Waypoint waypoint : waypoints) {
+                        int distance = Math.abs(getX(getWaypointXValue(waypoint)) - (int) event.getX() - getScrollX());
+                        if (distance < minDistance) {
+                            minDistance = distance;
+                            nearestWaypoint = waypoint;
+                        }
+                    }
+                }
+                if (nearestWaypoint != null && minDistance < markerWidth) {
+                    Intent intent = IntentUtils.newIntent(getContext(), MarkerDetailActivity.class)
+                            .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, nearestWaypoint.getId());
+                    getContext().startActivity(intent);
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    });
+
+    private ScaleGestureDetector detectorZoom = new ScaleGestureDetector(getContext(), new ScaleGestureDetector.SimpleOnScaleGestureListener() {
+
+        @Override
+        public boolean onScale(ScaleGestureDetector detector) {
+            float scaleFactor = detector.getScaleFactor();
+            if (scaleFactor >= 1.1f) {
+                zoomIn();
+                return true;
+            } else if (scaleFactor <= 0.9) {
+                zoomOut();
+                return true;
+            }
+            return false;
+        }
+    });
+
+    public ChartView(Context context, boolean chartByDistance) {
         super(context);
+        this.chartByDistance = chartByDistance;
 
         series[ELEVATION_SERIES] = new ChartValueSeries(context,
                 Integer.MIN_VALUE,
@@ -222,16 +291,6 @@ public class ChartView extends View {
         series[index].setEnabled(enabled);
     }
 
-    /**
-     * Sets chart by distance. It is expected that after changing this value, data
-     * will be reloaded.
-     *
-     * @param value true for by distance, false for by time
-     */
-    public void setChartByDistance(boolean value) {
-        chartByDistance = value;
-    }
-
     /**
      * Sets metric units.
      *
@@ -410,79 +469,14 @@ public class ChartView extends View {
 
     @Override
     public boolean onTouchEvent(MotionEvent event) {
-        if (velocityTracker == null) {
-            velocityTracker = VelocityTracker.obtain();
-        }
-        velocityTracker.addMovement(event);
-        float x = event.getX();
-        switch (event.getAction()) {
-            case MotionEvent.ACTION_DOWN:
-                // Stop the fling
-                if (!scroller.isFinished()) {
-                    scroller.abortAnimation();
-                }
-                lastMotionEventX = x;
-                break;
-            case MotionEvent.ACTION_MOVE:
-                if (lastMotionEventX == -1) {
-                    break;
-                }
-                // Scroll to follow the motion event
-                int deltaX = (int) (lastMotionEventX - x);
-                lastMotionEventX = x;
-                if (deltaX < 0) {
-                    if (getScrollX() > 0) {
-                        scrollBy(deltaX);
-                    }
-                } else if (deltaX > 0) {
-                    int availableToScroll = effectiveWidth * (zoomLevel - 1) - getScrollX();
-                    if (availableToScroll > 0) {
-                        scrollBy(Math.min(availableToScroll, deltaX));
-                    }
-                }
-                break;
-            case MotionEvent.ACTION_UP:
-                // Check if the y event is within markerHeight of the marker center
-                if (Math.abs(event.getY() - topBorder - spacer - markerHeight / 2) < markerHeight) {
-                    int minDistance = Integer.MAX_VALUE;
-                    Waypoint nearestWaypoint = null;
-                    synchronized (waypoints) {
-                        for (int i = 0; i < waypoints.size(); i++) {
-                            Waypoint waypoint = waypoints.get(i);
-                            int distance = Math.abs(getX(getWaypointXValue(waypoint)) - (int) event.getX() - getScrollX());
-                            if (distance < minDistance) {
-                                minDistance = distance;
-                                nearestWaypoint = waypoint;
-                            }
-                        }
-                    }
-                    if (nearestWaypoint != null && minDistance < markerWidth) {
-                        Intent intent = IntentUtils.newIntent(getContext(), MarkerDetailActivity.class)
-                                .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, nearestWaypoint.getId());
-                        getContext().startActivity(intent);
-                        return true;
-                    }
-                }
-
-                VelocityTracker myVelocityTracker = velocityTracker;
-                myVelocityTracker.computeCurrentVelocity(1000);
-                int initialVelocity = (int) myVelocityTracker.getXVelocity();
-                if (Math.abs(initialVelocity) > ViewConfiguration.getMinimumFlingVelocity()) {
-                    fling(-initialVelocity);
-                }
-                if (velocityTracker != null) {
-                    velocityTracker.recycle();
-                    velocityTracker = null;
-                }
-                break;
-        }
-        return true;
+        boolean isZoom = detectorZoom.onTouchEvent(event);
+        boolean isScrollTab = detectorScrollFlingTab.onTouchEvent(event);
+        return isZoom || isScrollTab;
     }
 
     @Override
     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
-        updateEffectiveDimensionsIfChanged(
-                View.MeasureSpec.getSize(widthMeasureSpec), View.MeasureSpec.getSize(heightMeasureSpec));
+        updateEffectiveDimensionsIfChanged(View.MeasureSpec.getSize(widthMeasureSpec), View.MeasureSpec.getSize(heightMeasureSpec));
         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
     }
 
@@ -632,8 +626,7 @@ public class ChartView extends View {
     private String getXAxisLabel() {
         Context context = getContext();
         if (chartByDistance) {
-            return metricUnits ? context.getString(R.string.unit_kilometer)
-                    : context.getString(R.string.unit_mile);
+            return metricUnits ? context.getString(R.string.unit_kilometer) : context.getString(R.string.unit_mile);
         } else {
             return context.getString(R.string.description_time);
         }
@@ -733,8 +726,7 @@ public class ChartView extends View {
      * @param yValue           the y value
      * @return the marker width.
      */
-    private float drawYAxisMarker(
-            ChartValueSeries chartValueSeries, Canvas canvas, int xPosition, int yValue) {
+    private float drawYAxisMarker(ChartValueSeries chartValueSeries, Canvas canvas, int xPosition, int yValue) {
         String marker = chartValueSeries.formatMarker(yValue);
         Paint paint = chartValueSeries.getMarkerPaint();
         Rect rect = getRect(paint, marker);
@@ -869,8 +861,7 @@ public class ChartView extends View {
         topBorder = (int) (density * BORDER + titleDimensions[0] * (titleDimensions[1] + spacer));
         Rect xAxisLabelRect = getRect(axisPaint, getXAxisLabel());
         // border + x axis marker + spacer + .5 x axis label
-        bottomBorder = (int) (density * BORDER + getRect(xAxisMarkerPaint, "1").height() + spacer
-                + (xAxisLabelRect.height() / 2));
+        bottomBorder = (int) (density * BORDER + getRect(xAxisMarkerPaint, "1").height() + spacer + (xAxisLabelRect.height() / 2));
         rightBorder = (int) (density * BORDER + xAxisLabelRect.width() + spacer);
         updateEffectiveDimensions();
     }

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

@@ -0,0 +1,20 @@
+package de.dennisguse.opentracks.content;
+
+import android.location.Location;
+import android.location.LocationManager;
+
+/**
+ * Creates a new {@link SensorDataSetLocation}.
+ * An implementation can create new instances or reuse existing instances for optimization.
+ */
+public class LocationFactory {
+
+    /**
+     * The default {@link LocationFactory} which creates a location each time.
+     */
+    public static LocationFactory DEFAULT_LOCATION_FACTORY = new LocationFactory();
+
+    public Location createLocation() {
+        return new SensorDataSetLocation(LocationManager.GPS_PROVIDER);
+    }
+}

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

@@ -0,0 +1,22 @@
+package de.dennisguse.opentracks.content;
+
+import android.database.Cursor;
+import android.location.Location;
+
+import java.util.Iterator;
+
+/**
+ * A lightweight wrapper around the original {@link Cursor} with a method to clean up.
+ */
+public interface LocationIterator extends Iterator<Location>, AutoCloseable {
+
+    /**
+     * Gets the most recently retrieved track point id by {@link #next()}.
+     */
+    long getLocationId();
+
+    /**
+     * Closes the iterator.
+     */
+    void close();
+}

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

@@ -28,11 +28,6 @@ public class SensorDataSetLocation extends Location {
 
     private SensorDataSet sensorDataSet = null;
 
-    /**
-     * The id of this location from the provider.
-     */
-    private int id = -1;
-
     public SensorDataSetLocation(Location location, SensorDataSet sensorDataSet) {
         super(location);
         this.sensorDataSet = sensorDataSet;
@@ -50,17 +45,8 @@ public class SensorDataSetLocation extends Location {
         this.sensorDataSet = sensorDataSet;
     }
 
-    public int getId() {
-        return id;
-    }
-
-    public void setId(int id) {
-        this.id = id;
-    }
-
     public void reset() {
         super.reset();
         sensorDataSet = null;
-        id = -1;
     }
 }

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

@@ -198,7 +198,7 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
     @Nullable
     @Override
     public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
-        ContentProviderUtils contentProviderUtils = new ContentProviderUtilsImpl(this);
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
 
         long[] trackIds = parseURI(uri);
         final Track[] tracks = new Track[trackIds.length];

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

@@ -30,7 +30,6 @@ import java.util.EnumSet;
 import java.util.Set;
 
 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
 import de.dennisguse.opentracks.util.LocationUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
@@ -45,7 +44,7 @@ public class TrackDataHub implements DataSourceListener {
      * Target number of track points displayed by the map overlay.
      * We may display more than this number of points.
      */
-    static final int TARGET_DISPLAYED_TRACK_POINTS = 5000;
+    private static final int TARGET_DISPLAYED_TRACK_POINTS = 5000;
 
     /**
      * Maximum number of waypoints to displayed.
@@ -97,8 +96,7 @@ public class TrackDataHub implements DataSourceListener {
     }
 
     public synchronized static TrackDataHub newInstance(Context context) {
-        return new TrackDataHub(context, new TrackDataManager(), ContentProviderUtils.Factory.get(
-                context), TARGET_DISPLAYED_TRACK_POINTS);
+        return new TrackDataHub(context, new TrackDataManager(), new ContentProviderUtils(context), TARGET_DISPLAYED_TRACK_POINTS);
     }
 
     public void start() {
@@ -208,7 +206,7 @@ public class TrackDataHub implements DataSourceListener {
      * Returns true if the selected track is recording.
      */
     public boolean isSelectedTrackRecording() {
-        return selectedTrackId == recordingTrackId && recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        return selectedTrackId == recordingTrackId && PreferencesUtils.isRecording(recordingTrackId);
     }
 
     /**
@@ -254,13 +252,13 @@ public class TrackDataHub implements DataSourceListener {
         runInHandlerThread(new Runnable() {
             @Override
             public void run() {
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_id_key))) {
-                    recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
+                if (PreferencesUtils.isKey(context, R.string.recording_track_id_key, key)) {
+                    recordingTrackId = PreferencesUtils.getRecordingTrackId(context);
                 }
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_paused_key))) {
-                    recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+                if (PreferencesUtils.isKey(context, R.string.recording_track_paused_key, key)) {
+                    recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(context);
                 }
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.stats_units_key))) {
+                if (PreferencesUtils.isKey(context, R.string.stats_units_key, key)) {
                     metricUnits = PreferencesUtils.isMetricUnits(context);
                     if (key != null) {
                         for (TrackDataListener trackDataListener : trackDataManager.getListeners(TrackDataType.PREFERENCE)) {
@@ -270,7 +268,7 @@ public class TrackDataHub implements DataSourceListener {
                         }
                     }
                 }
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.stats_rate_key))) {
+                if (PreferencesUtils.isKey(context, R.string.stats_rate_key, key)) {
                     reportSpeed = PreferencesUtils.isReportSpeed(context);
                     if (key != null) {
                         for (TrackDataListener trackDataListener : trackDataManager.getListeners(TrackDataType.PREFERENCE)) {
@@ -280,8 +278,8 @@ public class TrackDataHub implements DataSourceListener {
                         }
                     }
                 }
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_gps_accuracy_key))) {
-                    recordingGpsAccuracy = PreferencesUtils.getInt(context, R.string.recording_gps_accuracy_key, PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT);
+                if (PreferencesUtils.isKey(context, R.string.recording_gps_accuracy_key, key)) {
+                    recordingGpsAccuracy = PreferencesUtils.getRecordingGPSAccuracy(context);
                     if (key != null) {
                         for (TrackDataListener trackDataListener : trackDataManager.getListeners(TrackDataType.PREFERENCE)) {
                             if (trackDataListener.onRecordingGpsAccuracy(recordingGpsAccuracy)) {
@@ -290,8 +288,8 @@ public class TrackDataHub implements DataSourceListener {
                         }
                     }
                 }
-                if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_distance_interval_key))) {
-                    recordingDistanceInterval = PreferencesUtils.getInt(context, R.string.recording_distance_interval_key, PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT);
+                if (PreferencesUtils.isKey(context, R.string.recording_distance_interval_key, key)) {
+                    recordingDistanceInterval = PreferencesUtils.getRecordingDistanceInterval(context);
                     if (key != null) {
                         for (TrackDataListener trackDataListener : trackDataManager.getListeners(TrackDataType.PREFERENCE)) {
                             if (trackDataListener.onRecordingDistanceIntervalChanged(recordingDistanceInterval)) {
@@ -448,7 +446,7 @@ public class TrackDataHub implements DataSourceListener {
         int samplingFrequency = -1;
         boolean includeNextPoint = false;
 
-        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(selectedTrackId, localLastSeenLocationId + 1, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY)) {
+        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(selectedTrackId, localLastSeenLocationId + 1, false, LocationFactory.DEFAULT_LOCATION_FACTORY)) {
 
             while (locationIterator.hasNext()) {
                 Location location = locationIterator.next();

src/main/java/de/dennisguse/opentracks/content/sensor/SensorDataSet.java

@@ -2,9 +2,9 @@ package de.dennisguse.opentracks.content.sensor;
 
 public final class SensorDataSet {
 
-    public static final float DATA_UNAVAILABLE = Integer.MAX_VALUE;
+    public static final float DATA_UNAVAILABLE = Float.NaN;
 
-    //TODO It might be necessary to consider: sensor if sensor was connected as well.
+    //TODO It might be necessary to consider: if sensor was connected as well.
     public String sensorName;
     public String sensorAddress;
     private float heartRate;
@@ -40,7 +40,7 @@ public final class SensorDataSet {
     }
 
     public boolean hasHeartRate() {
-        return heartRate != DATA_UNAVAILABLE;
+        return !Float.isNaN(heartRate) && heartRate > 0;
     }
 
     public float getHeartRate() {
@@ -48,7 +48,7 @@ public final class SensorDataSet {
     }
 
     public boolean hasCadence() {
-        return cadence != DATA_UNAVAILABLE;
+        return !Float.isNaN(cadence);
     }
 
     public float getCadence() {
@@ -56,7 +56,7 @@ public final class SensorDataSet {
     }
 
     public boolean hasPower() {
-        return power != DATA_UNAVAILABLE;
+        return !Float.isNaN(power);
     }
 
     public float getPower() {
@@ -77,7 +77,7 @@ public final class SensorDataSet {
     }
 
     public boolean hasBatteryLevel() {
-        return batteryLevel != DATA_UNAVAILABLE;
+        return !Float.isNaN(batteryLevel);
     }
 
     public float getBatteryLevel() {

src/main/java/de/dennisguse/opentracks/content/sensor/SensorState.java

@@ -8,6 +8,7 @@ public enum SensorState {
     NONE,
     CONNECTING,
     CONNECTED,
+    DISCONNECTING,
     DISCONNECTED;
 
     public static String getStateAsString(SensorState state, Context c) {
@@ -18,6 +19,8 @@ public enum SensorState {
                 return c.getString(R.string.sensor_state_connecting);
             case CONNECTED:
                 return c.getString(R.string.sensor_state_connected);
+            case DISCONNECTING:
+                return c.getString(R.string.sensor_state_disconnected);
             case DISCONNECTED:
                 return c.getString(R.string.sensor_state_disconnected);
             default:

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

@@ -0,0 +1,10 @@
+package de.dennisguse.opentracks.fragments;
+
+public class ChartDistanceFragment extends ChartFragment {
+
+    public static final String CHART_FRAGMENT_TAG = ChartDistanceFragment.class.getSimpleName();
+
+    public ChartDistanceFragment() {
+        super(true);
+    }
+}

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

@@ -22,9 +22,9 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.view.ViewGroup.LayoutParams;
-import android.widget.ZoomControls;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
@@ -32,9 +32,9 @@ import androidx.fragment.app.FragmentActivity;
 import java.util.ArrayList;
 import java.util.EnumSet;
 
-import de.dennisguse.opentracks.ChartView;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackDetailActivity;
+import de.dennisguse.opentracks.chart.ChartView;
 import de.dennisguse.opentracks.content.SensorDataSetLocation;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.TrackDataHub;
@@ -54,9 +54,9 @@ import de.dennisguse.opentracks.util.UnitConversions;
  * @author Sandor Dornbush
  * @author Rodrigo Damazio
  */
-public class ChartFragment extends Fragment implements TrackDataListener {
+public abstract class ChartFragment extends Fragment implements TrackDataListener {
 
-    public static final String CHART_FRAGMENT_TAG = "chartFragment";
+    private static final String STATE_CHART_VIEW_BY_DISTANCE_KEY = "chartViewByDistance";
 
     private final ArrayList<double[]> pendingPoints = new ArrayList<>();
 
@@ -68,18 +68,17 @@ public class ChartFragment extends Fragment implements TrackDataListener {
 
     private boolean metricUnits = true;
     private boolean reportSpeed = true;
-    private int recordingDistanceInterval = PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT;
+    private int recordingDistanceInterval;
 
     // Modes of operation
-    private boolean chartByDistance = true;
+    private boolean chartByDistance;
     private boolean[] chartShow = new boolean[]{true, true, true, true, true, true};
 
     // UI elements
     private ChartView chartView;
-    private ZoomControls zoomControls;
 
     /**
-     * A runnable that will enable/disable zoom controls and orange pointer as appropriate and redraw.
+     * A runnable that will set the orange pointer as appropriate and redraw.
      */
     private final Runnable updateChart = new Runnable() {
         @Override
@@ -88,46 +87,34 @@ public class ChartFragment extends Fragment implements TrackDataListener {
                 return;
             }
 
-            zoomControls.setIsZoomInEnabled(chartView.canZoomIn());
-            zoomControls.setIsZoomOutEnabled(chartView.canZoomOut());
             chartView.setShowPointer(isSelectedTrackRecording());
             chartView.invalidate();
         }
     };
 
+    public ChartFragment(boolean chartByDistance) {
+        this.chartByDistance = chartByDistance;
+    }
+
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        /*
-         * Create a chartView here to store data thus won't need to reload all the data on every onStart or onResume.
-         */
-        chartView = new ChartView(getActivity());
+        recordingDistanceInterval = PreferencesUtils.getRecordingDistanceIntervalDefault(getContext());
+
+        // Create a chartView here to store data thus won't need to reload all the data on every onStart or onResume.
+        chartView = new ChartView(getActivity(), chartByDistance);
     }
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.chart, container, false);
-        zoomControls = view.findViewById(R.id.chart_zoom_controls);
-        zoomControls.setOnZoomInClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                zoomIn();
-            }
-        });
-        zoomControls.setOnZoomOutClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                zoomOut();
-            }
-        });
-        return view;
+        return inflater.inflate(R.layout.chart, container, false);
     }
 
     @Override
     public void onStart() {
         super.onStart();
-        ViewGroup layout = getActivity().findViewById(R.id.chart_view_layout);
+        ViewGroup layout = getView().findViewById(R.id.chart_view_layout);
         LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
         layout.addView(chartView, layoutParams);
     }
@@ -149,10 +136,24 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     @Override
     public void onStop() {
         super.onStop();
-        ViewGroup layout = getActivity().findViewById(R.id.chart_view_layout);
+        ViewGroup layout = getView().findViewById(R.id.chart_view_layout);
         layout.removeView(chartView);
     }
 
+    @Override
+    public void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putBoolean(STATE_CHART_VIEW_BY_DISTANCE_KEY, chartByDistance);
+    }
+
+    @Override
+    public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
+        super.onViewStateRestored(savedInstanceState);
+        if (savedInstanceState != null) {
+            chartByDistance = savedInstanceState.getBoolean(STATE_CHART_VIEW_BY_DISTANCE_KEY);
+        }
+    }
+
     @Override
     public void onTrackUpdated(Track track) {
         if (isResumed()) {
@@ -263,8 +264,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
             }
             reportSpeed = speed;
             chartView.setReportSpeed(reportSpeed);
-            boolean chartShowSpeed = PreferencesUtils.getBoolean(
-                    getActivity(), R.string.chart_show_speed_key, PreferencesUtils.CHART_SHOW_SPEED_DEFAULT);
+            boolean chartShowSpeed = PreferencesUtils.shouldChartShowSpeed(getActivity());
             setSeriesEnabled(ChartView.SPEED_SERIES, chartShowSpeed && reportSpeed);
             setSeriesEnabled(ChartView.PACE_SERIES, chartShowSpeed && !reportSpeed);
             runOnUiThread(new Runnable() {
@@ -303,30 +303,24 @@ public class ChartFragment extends Fragment implements TrackDataListener {
      */
     private void checkChartSettings() {
         boolean needUpdate = false;
-        if (chartByDistance != PreferencesUtils.isChartByDistance(getActivity())) {
-            chartByDistance = !chartByDistance;
-            chartView.setChartByDistance(chartByDistance);
-            reloadTrackDataHub();
-            needUpdate = true;
-        }
-        if (setSeriesEnabled(ChartView.ELEVATION_SERIES, PreferencesUtils.getBoolean(getActivity(), R.string.chart_show_elevation_key, PreferencesUtils.CHART_SHOW_ELEVATION_DEFAULT))) {
+        if (setSeriesEnabled(ChartView.ELEVATION_SERIES, PreferencesUtils.shouldChartShowElevation(getActivity()))) {
             needUpdate = true;
         }
 
-        boolean chartShowSpeed = PreferencesUtils.getBoolean(getActivity(), R.string.chart_show_speed_key, PreferencesUtils.CHART_SHOW_SPEED_DEFAULT);
+        boolean chartShowSpeed = PreferencesUtils.shouldChartShowSpeed(getActivity());
         if (setSeriesEnabled(ChartView.SPEED_SERIES, chartShowSpeed && reportSpeed)) {
             needUpdate = true;
         }
         if (setSeriesEnabled(ChartView.PACE_SERIES, chartShowSpeed && !reportSpeed)) {
             needUpdate = true;
         }
-        if (setSeriesEnabled(ChartView.POWER_SERIES, PreferencesUtils.getBoolean(getActivity(), R.string.chart_show_power_key, PreferencesUtils.CHART_SHOW_POWER_DEFAULT))) {
+        if (setSeriesEnabled(ChartView.POWER_SERIES, PreferencesUtils.shouldChartShowPower(getActivity()))) {
             needUpdate = true;
         }
-        if (setSeriesEnabled(ChartView.CADENCE_SERIES, PreferencesUtils.getBoolean(getActivity(), R.string.chart_show_cadence_key, PreferencesUtils.CHART_SHOW_CADENCE_DEFAULT))) {
+        if (setSeriesEnabled(ChartView.CADENCE_SERIES, PreferencesUtils.shouldChartShowCadence(getActivity()))) {
             needUpdate = true;
         }
-        if (setSeriesEnabled(ChartView.HEART_RATE_SERIES, PreferencesUtils.getBoolean(getActivity(), R.string.chart_show_heart_rate_key, PreferencesUtils.CHART_SHOW_HEART_RATE_DEFAULT))) {
+        if (setSeriesEnabled(ChartView.HEART_RATE_SERIES, PreferencesUtils.shouldChartShowHeartRate(getActivity()))) {
             needUpdate = true;
         }
         if (needUpdate) {
@@ -352,8 +346,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     }
 
     /**
-     * Resumes the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Resumes the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
      */
     private synchronized void resumeTrackDataHub() {
         trackDataHub = ((TrackDetailActivity) getActivity()).getTrackDataHub();
@@ -363,8 +357,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     }
 
     /**
-     * Pauses the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Pauses the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
      */
     private synchronized void pauseTrackDataHub() {
         trackDataHub.unregisterTrackDataListener(this);
@@ -372,16 +366,16 @@ public class ChartFragment extends Fragment implements TrackDataListener {
     }
 
     /**
-     * Returns true if the selected track is recording. Needs to be synchronized
-     * because trackDataHub can be accessed by multiple threads.
+     * Returns true if the selected track is recording.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
      */
     private synchronized boolean isSelectedTrackRecording() {
         return trackDataHub != null && trackDataHub.isSelectedTrackRecording();
     }
 
     /**
-     * Reloads the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Reloads the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
      */
     private synchronized void reloadTrackDataHub() {
         if (trackDataHub != null) {
@@ -389,24 +383,6 @@ public class ChartFragment extends Fragment implements TrackDataListener {
         }
     }
 
-    /**
-     * To zoom in.
-     */
-    private void zoomIn() {
-        chartView.zoomIn();
-        zoomControls.setIsZoomInEnabled(chartView.canZoomIn());
-        zoomControls.setIsZoomOutEnabled(chartView.canZoomOut());
-    }
-
-    /**
-     * To zoom out.
-     */
-    private void zoomOut() {
-        chartView.zoomOut();
-        zoomControls.setIsZoomInEnabled(chartView.canZoomIn());
-        zoomControls.setIsZoomOutEnabled(chartView.canZoomOut());
-    }
-
     /**
      * Runs a runnable on the UI thread if possible.
      *
@@ -438,9 +414,6 @@ public class ChartFragment extends Fragment implements TrackDataListener {
         double elevation = Double.NaN;
         double speed = Double.NaN;
         double pace = Double.NaN;
-        double heartRate = Double.NaN;
-        double cadence = Double.NaN;
-        double power = Double.NaN;
 
         if (tripStatisticsUpdater != null) {
             tripStatisticsUpdater.addLocation(location, recordingDistanceInterval);
@@ -466,6 +439,10 @@ public class ChartFragment extends Fragment implements TrackDataListener {
             }
             pace = speed == 0 ? 0.0 : 60.0 / speed;
         }
+
+        double heartRate = Double.NaN;
+        double cadence = Double.NaN;
+        double power = Double.NaN;
         if (location instanceof SensorDataSetLocation && ((SensorDataSetLocation) location).getSensorDataSet() != null) {
             SensorDataSet sensorDataSet = ((SensorDataSetLocation) location).getSensorDataSet();
             if (sensorDataSet.hasHeartRate()) {
@@ -479,6 +456,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
             }
         }
 
+        //TODO: Is related to ChartView.ELEVATION_SERIES etc.
         if (data != null) {
             data[0] = timeOrDistance;
             data[1] = elevation;

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

@@ -0,0 +1,10 @@
+package de.dennisguse.opentracks.fragments;
+
+public class ChartTimeFragment extends ChartFragment {
+
+    public static final String CHART_FRAGMENT_TAG = ChartTimeFragment.class.getSimpleName();
+
+    public ChartTimeFragment() {
+        super(false);
+    }
+}

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

@@ -1,34 +1,17 @@
-/*
- * Copyright 2013 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.fragments;
 
-import android.app.AlertDialog;
 import android.app.Dialog;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.GridView;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -38,56 +21,13 @@ import de.dennisguse.opentracks.util.TrackIconUtils;
 
 /**
  * A DialogFragment to choose an activity type.
- *
- * @author apoorvn
  */
-public class ChooseActivityTypeDialogFragment extends DialogFragment {
+public class ChooseActivityTypeDialogFragment extends DialogFragment implements AdapterView.OnItemClickListener {
 
-    public static final String CHOOSE_ACTIVITY_TYPE_DIALOG_TAG = "chooseActivityType";
-    private static final String KEY_CATEGORY = "category";
-    private ChooseActivityTypeCaller caller;
+    private static final String CHOOSE_ACTIVITY_TYPE_DIALOG_TAG = "chooseActivityType";
 
-    public static ChooseActivityTypeDialogFragment newInstance(String category) {
-        Bundle bundle = new Bundle();
-        bundle.putString(KEY_CATEGORY, category);
-
-        ChooseActivityTypeDialogFragment fragment = new ChooseActivityTypeDialogFragment();
-        fragment.setArguments(bundle);
-        return fragment;
-    }
-
-    public static Dialog getDialog(final Context context, final String category, final ChooseActivityTypeCaller caller) {
-        View view = LayoutInflater.from(context).inflate(R.layout.choose_activity_type, null);
-        GridView gridView = view.findViewById(R.id.choose_activity_type_grid_view);
-
-        List<Integer> imageIds = new ArrayList<>();
-        for (String iconValue : TrackIconUtils.getAllIconValues()) {
-            imageIds.add(TrackIconUtils.getIconDrawable(iconValue));
-        }
-
-        final ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(imageIds);
-        gridView.setAdapter(imageAdapter);
-
-        final AlertDialog alertDialog = new AlertDialog.Builder(context).setTitle(R.string.track_edit_activity_type_hint).setView(view).create();
-        alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {
-            @Override
-            public void onShow(DialogInterface dialog) {
-                int position = getPosition(context, category);
-                if (position != -1) {
-                    imageAdapter.setSelected(position);
-                    imageAdapter.notifyDataSetChanged();
-                }
-            }
-        });
-
-        gridView.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
-                caller.onChooseActivityTypeDone(TrackIconUtils.getAllIconValues().get(position));
-                alertDialog.dismiss();
-            }
-        });
-        return alertDialog;
+    public static void showDialog(FragmentManager fragmentManager, String preselectedCategory) {
+        new ChooseActivityTypeDialogFragment(preselectedCategory).show(fragmentManager, ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
     }
 
     private static int getPosition(Context context, String category) {
@@ -99,32 +39,66 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment {
         return TrackIconUtils.getAllIconValues().indexOf(iconValue);
     }
 
-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (ChooseActivityTypeCaller) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + ChooseActivityTypeCaller.class.getSimpleName());
-        }
+    private String preselectedCategory;
+
+    private ChooseActivityTypeCaller chooseActivityTypeCaller;
+
+    private ChooseActivityTypeDialogFragment(String preselectedCategory) {
+        this.preselectedCategory = preselectedCategory;
     }
 
     @NonNull
     @Override
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        return getDialog(getActivity(), getArguments().getString(KEY_CATEGORY), caller);
+        Dialog dialog = super.onCreateDialog(savedInstanceState);
+        dialog.setTitle(R.string.track_edit_activity_type_hint);
+        return dialog;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.choose_activity_type, container);
+        GridView gridView = view.findViewById(R.id.choose_activity_type_grid_view);
+
+        List<Integer> imageIds = new ArrayList<>();
+        for (String iconValue : TrackIconUtils.getAllIconValues()) {
+            imageIds.add(TrackIconUtils.getIconDrawable(iconValue));
+        }
+
+        final ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(imageIds);
+        gridView.setAdapter(imageAdapter);
+
+        int position = getPosition(getContext(), preselectedCategory);
+        if (position != -1) {
+            imageAdapter.setSelected(position);
+            imageAdapter.notifyDataSetChanged();
+        }
+
+        gridView.setOnItemClickListener(this);
+        return view;
+    }
+
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        try {
+            chooseActivityTypeCaller = (ChooseActivityTypeCaller) context;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(context + " must implement " + ChooseActivityTypeCaller.class.getSimpleName());
+        }
+    }
+
+
+    @Override
+    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+        chooseActivityTypeCaller.onChooseActivityTypeDone(TrackIconUtils.getAllIconValues().get(position));
+        dismiss();
     }
 
     /**
-     * Interface for caller of this dialog fragment.
-     *
-     * @author apoorvn
+     * Interface for chooseActivityTypeCaller of this dialog fragment.
      */
     public interface ChooseActivityTypeCaller {
 
-        /**
-         * Called when choose activity type is done.
-         */
         void onChooseActivityTypeDone(String iconValue);
     }
 }

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

@@ -23,6 +23,7 @@ import android.os.Bundle;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.util.DialogUtils;
@@ -34,22 +35,21 @@ import de.dennisguse.opentracks.util.DialogUtils;
  */
 public class ConfirmDeleteDialogFragment extends DialogFragment {
 
-    public static final String CONFIRM_DELETE_DIALOG_TAG = "confirmDeleteDialog";
-    private static final String KEY_TRACK_IDS = "trackIds";
+    private static final String CONFIRM_DELETE_DIALOG_TAG = "confirmDeleteDialog";
     private ConfirmDeleteCaller caller;
+    private long[] trackIds;
+
+    public ConfirmDeleteDialogFragment(long[] trackIds) {
+        this.trackIds = trackIds;
+    }
 
     /**
      * Create a new instance.
      *
      * @param trackIds list of track ids to delete. To delete all, set to size 1 with trackIds[0] == -1L
      */
-    public static ConfirmDeleteDialogFragment newInstance(long[] trackIds) {
-        Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_TRACK_IDS, trackIds);
-
-        ConfirmDeleteDialogFragment deleteTrackDialogFragment = new ConfirmDeleteDialogFragment();
-        deleteTrackDialogFragment.setArguments(bundle);
-        return deleteTrackDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, long[] trackIds) {
+        new ConfirmDeleteDialogFragment(trackIds).show(fragmentManager, CONFIRM_DELETE_DIALOG_TAG);
     }
 
     @Override
@@ -62,11 +62,9 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
         }
     }
 
-
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] trackIds = getArguments().getLongArray(KEY_TRACK_IDS);
         int titleId;
         int messageId;
         titleId = trackIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.track_delete_one_confirm_title;

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

@@ -24,6 +24,7 @@ import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
@@ -37,17 +38,17 @@ import de.dennisguse.opentracks.util.DialogUtils;
  */
 public class DeleteMarkerDialogFragment extends DialogFragment {
 
-    public static final String DELETE_MARKER_DIALOG_TAG = "deleteMarkerDialog";
-    private static final String KEY_MARKER_IDS = "markerIds";
+    private static final String DELETE_MARKER_DIALOG_TAG = "deleteMarkerDialog";
+    private long[] markerIds;
+
     private DeleteMarkerCaller caller;
 
-    public static DeleteMarkerDialogFragment newInstance(long[] markerIds) {
-        Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_MARKER_IDS, markerIds);
+    public DeleteMarkerDialogFragment(long[] markerIds) {
+        this.markerIds = markerIds;
+    }
 
-        DeleteMarkerDialogFragment deleteMarkerDialogFragment = new DeleteMarkerDialogFragment();
-        deleteMarkerDialogFragment.setArguments(bundle);
-        return deleteMarkerDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, long[] markerIds) {
+        new DeleteMarkerDialogFragment(markerIds).show(fragmentManager, DELETE_MARKER_DIALOG_TAG);
     }
 
     @Override
@@ -64,7 +65,6 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
         final FragmentActivity fragmentActivity = getActivity();
-        final long[] markerIds = getArguments().getLongArray(KEY_MARKER_IDS);
         int titleId;
         int messageId;
         if (markerIds.length == 1 && markerIds[0] == -1L) {
@@ -81,8 +81,7 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
                         new Thread(new Runnable() {
                             @Override
                             public void run() {
-                                ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(
-                                        fragmentActivity);
+                                ContentProviderUtils contentProviderUtils = new ContentProviderUtils(fragmentActivity);
                                 for (long markerId : markerIds) {
                                     contentProviderUtils.deleteWaypoint(fragmentActivity,
                                             markerId, new DescriptionGeneratorImpl(fragmentActivity));

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

@@ -25,6 +25,7 @@ import android.os.Bundle;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;
 
 import java.util.Locale;
 
@@ -39,19 +40,19 @@ import de.dennisguse.opentracks.util.FileUtils;
  */
 public class FileTypeDialogFragment extends DialogFragment {
 
-    public static final String FILE_TYPE_DIALOG_TAG = "fileType";
-    private static final String KEY_TITLE_ID = "titleId";
-    private static final String KEY_OPTION_ID = "optionId";
+    private static final String FILE_TYPE_DIALOG_TAG = "fileType";
+    private int titleId;
+
     private FileTypeCaller caller;
+    private int optionId;
 
-    public static FileTypeDialogFragment newInstance(int titleId, int optionId) {
-        Bundle bundle = new Bundle();
-        bundle.putInt(KEY_TITLE_ID, titleId);
-        bundle.putInt(KEY_OPTION_ID, optionId);
+    public FileTypeDialogFragment(int titleId, int optionId) {
+        this.titleId = titleId;
+        this.optionId = optionId;
+    }
 
-        FileTypeDialogFragment fileTypeDialogFragment = new FileTypeDialogFragment();
-        fileTypeDialogFragment.setArguments(bundle);
-        return fileTypeDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, int titleId, int optionId) {
+        new FileTypeDialogFragment(titleId, optionId).show(fragmentManager, FILE_TYPE_DIALOG_TAG);
     }
 
     @Override
@@ -67,8 +68,6 @@ public class FileTypeDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        int optionId = getArguments().getInt(KEY_OPTION_ID);
-        final int titleId = getArguments().getInt(KEY_TITLE_ID);
         final TrackFileFormat[] trackFileFormats = {TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES, TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA, TrackFileFormat.GPX};
         String[] choices = new String[trackFileFormats.length];
         for (int i = 0; i < choices.length; i++) {
@@ -96,7 +95,7 @@ public class FileTypeDialogFragment extends DialogFragment {
     }
 
     @Override
-    public void onCancel(DialogInterface dialog) {
+    public void onCancel(@NonNull DialogInterface dialog) {
         onDismissed();
     }
 

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

@@ -1,109 +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.fragments;
-
-import android.app.AlertDialog;
-import android.app.Dialog;
-import android.content.DialogInterface;
-import android.os.Bundle;
-
-import androidx.annotation.NonNull;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentActivity;
-
-import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.StringUtils;
-
-/**
- * A DialogFragment to configure frequency.
- *
- * @author Jimmy Shih
- */
-public class FrequencyDialogFragment extends DialogFragment {
-
-    public static final String FREQUENCY_DIALOG_TAG = "frequencyDialog";
-
-    private static final String KEY_PREFERENCE_ID = "preferenceId";
-    private static final String KEY_DEFAULT_VALUE = "defaultValue";
-    private static final String KEY_TITLE_ID = "titleId";
-
-    public static FrequencyDialogFragment newInstance(int preferenceId, int defaultValue, int titleId) {
-        Bundle bundle = new Bundle();
-        bundle.putInt(KEY_PREFERENCE_ID, preferenceId);
-        bundle.putInt(KEY_DEFAULT_VALUE, defaultValue);
-        bundle.putInt(KEY_TITLE_ID, titleId);
-
-        FrequencyDialogFragment frequencyDialogFragment = new FrequencyDialogFragment();
-        frequencyDialogFragment.setArguments(bundle);
-        return frequencyDialogFragment;
-    }
-
-    @Override
-    @NonNull
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        FragmentActivity fragmentActivity = getActivity();
-
-        final int preferenceId = getArguments().getInt(KEY_PREFERENCE_ID);
-        int defaultValue = getArguments().getInt(KEY_DEFAULT_VALUE);
-        int titleId = getArguments().getInt(KEY_TITLE_ID);
-        int frequencyValue = PreferencesUtils.getInt(fragmentActivity, preferenceId, defaultValue);
-
-        return new AlertDialog.Builder(fragmentActivity).setPositiveButton(
-                R.string.generic_ok, new DialogInterface.OnClickListener() {
-                    @Override
-                    public void onClick(DialogInterface dialog, int which) {
-                        int listIndex = ((AlertDialog) dialog).getListView().getCheckedItemPosition();
-                        PreferencesUtils.setInt(getActivity(), preferenceId, getFrequencyValue(listIndex));
-                    }
-                }).setSingleChoiceItems(
-                getFrequencyDisplayOptions(fragmentActivity), getListIndex(frequencyValue), null)
-                .setTitle(titleId).create();
-    }
-
-    /**
-     * Gets the frequency display options.
-     */
-    private String[] getFrequencyDisplayOptions(FragmentActivity fragmentActivity) {
-        boolean metricUnits = PreferencesUtils.isMetricUnits(fragmentActivity);
-        return StringUtils.getFrequencyOptions(fragmentActivity, metricUnits);
-    }
-
-    /**
-     * Gets the list index for a frequency value.
-     * Returns 0 if the value is not on the list.
-     */
-    private int getListIndex(int frequencyValue) {
-        String[] values = getResources().getStringArray(R.array.frequency_values);
-        for (int i = 0; i < values.length; i++) {
-            if (frequencyValue == Integer.parseInt(values[i])) {
-                return i;
-            }
-        }
-        return 0;
-    }
-
-    /**
-     * Gets the frequency value from a list index.
-     *
-     * @param listIndex the list index
-     */
-    private int getFrequencyValue(int listIndex) {
-        String[] values = getResources().getStringArray(R.array.frequency_values);
-        return Integer.parseInt(values[listIndex]);
-    }
-}

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

@@ -110,7 +110,7 @@ public class MarkerDetailFragment extends Fragment {
             getFragmentManager().popBackStack();
             return;
         }
-        contentProviderUtils = ContentProviderUtils.Factory.get(getActivity());
+        contentProviderUtils = new ContentProviderUtils(getActivity());
         handler = new Handler();
         setHasOptionsMenu(true);
     }
@@ -192,8 +192,7 @@ public class MarkerDetailFragment extends Fragment {
                 startActivity(intent);
                 return true;
             case R.id.marker_detail_delete:
-                DeleteMarkerDialogFragment.newInstance(new long[]{markerId})
-                        .show(getChildFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                DeleteMarkerDialogFragment.showDialog(getChildFragmentManager(), new long[]{markerId});
                 return true;
             default:
                 return super.onOptionsItemSelected(item);

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

@@ -43,10 +43,8 @@ import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 import de.dennisguse.opentracks.services.ITrackRecordingService;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
-import de.dennisguse.opentracks.services.sensors.RemoteSensorManager;
 import de.dennisguse.opentracks.stats.TripStatistics;
 import de.dennisguse.opentracks.util.LocationUtils;
-import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StatsUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
@@ -59,7 +57,7 @@ import de.dennisguse.opentracks.util.UnitConversions;
  */
 public class StatsFragment extends Fragment implements TrackDataListener {
 
-    public static final String STATS_FRAGMENT_TAG = "statsFragment";
+    public static final String STATS_FRAGMENT_TAG = StatsFragment.class.getSimpleName();
 
     private TrackDataHub trackDataHub;
     private Handler handlerUpdateUI;
@@ -68,7 +66,6 @@ public class StatsFragment extends Fragment implements TrackDataListener {
 
     private Location lastLocation = null;
     private TripStatistics lastTripStatistics = null;
-    private SensorDataSet sensorDataSet = null;
 
     private final Runnable updateUIeachSecond = new Runnable() {
         public void run() {
@@ -83,7 +80,7 @@ public class StatsFragment extends Fragment implements TrackDataListener {
         }
     };
     private String category = "";
-    private int recordingGpsAccuracy = PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT;
+    private int recordingGpsAccuracy;
 
     @Override
     public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
@@ -93,9 +90,10 @@ public class StatsFragment extends Fragment implements TrackDataListener {
     @Override
     public void onActivityCreated(Bundle savedInstanceState) {
         super.onActivityCreated(savedInstanceState);
+
+        recordingGpsAccuracy = Integer.parseInt(getContext().getResources().getString(R.string.recording_gps_accuracy_default));
+
         handlerUpdateUI = new Handler();
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(getContext(), null);
-        trackRecordingServiceConnection.startConnection(getContext());
 
         Spinner activityTypeIcon = getView().findViewById(R.id.stats_activity_type_icon);
         activityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(getActivity(), ""));
@@ -123,6 +121,10 @@ public class StatsFragment extends Fragment implements TrackDataListener {
     public void onResume() {
         super.onResume();
         resumeTrackDataHub();
+
+        trackRecordingServiceConnection = new TrackRecordingServiceConnection(getContext(), null);
+        trackRecordingServiceConnection.startConnection(getContext());
+
         updateUi(getActivity());
         if (isSelectedTrackRecording()) {
             handlerUpdateUI.post(updateUIeachSecond);
@@ -140,6 +142,7 @@ public class StatsFragment extends Fragment implements TrackDataListener {
     public void onStop() {
         super.onStop();
         trackRecordingServiceConnection.unbind();
+        trackRecordingServiceConnection = null;
     }
 
     @Override
@@ -298,13 +301,14 @@ public class StatsFragment extends Fragment implements TrackDataListener {
     }
 
     /**
-     * Tries to fetch most recent {@link SensorDataSet} {@link RemoteSensorManager}.
+     * Tries to fetch most recent {@link SensorDataSet} {@link de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager}.
      */
     private void updateSensorDataUI() {
         ITrackRecordingService trackRecordingService = trackRecordingServiceConnection.getServiceIfBound();
+
+        SensorDataSet sensorDataSet = null;
         if (trackRecordingService == null) {
             Log.d(STATS_FRAGMENT_TAG, "Cannot get the track recording service.");
-            sensorDataSet = null;
         } else {
             //TODO sensorState = trackRecordingService.getSensorState();
             sensorDataSet = trackRecordingService.getSensorData();

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

@@ -173,10 +173,12 @@ public enum TrackFileFormat {
 
     private static final String MIME_KML = "application/vnd.google-earth.kml+xml";
 
-    public TrackExporter newTrackExporter(Context context, Track[] tracks, TrackExporterListener trackExporterListener) {
-        ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
-        TrackWriter trackWriter = this.newTrackWriter(context, tracks.length > 1);
-        return new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
+    private static TrackExporter newKmzTrackExporter(Context context, TrackWriter trackWriter, Track[] tracks, TrackExporterListener trackExporterListener, boolean exportPhotos) {
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
+
+        FileTrackExporter fileTrackExporter = new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
+
+        return new KmzTrackExporter(contentProviderUtils, fileTrackExporter, tracks, exportPhotos);
     }
 
     /**
@@ -184,12 +186,10 @@ public enum TrackFileFormat {
      */
     public abstract String getMimeType();
 
-    private static TrackExporter newKmzTrackExporter(Context context, TrackWriter trackWriter, Track[] tracks, TrackExporterListener trackExporterListener, boolean exportPhotos) {
-        ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
-
-        FileTrackExporter fileTrackExporter = new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
-
-        return new KmzTrackExporter(contentProviderUtils, fileTrackExporter, tracks, exportPhotos);
+    public TrackExporter newTrackExporter(Context context, Track[] tracks, TrackExporterListener trackExporterListener) {
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
+        TrackWriter trackWriter = this.newTrackWriter(context, tracks.length > 1);
+        return new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
     }
 
     /**

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

@@ -84,9 +84,7 @@ public class ExportActivity extends FragmentActivity implements FileTypeDialogFr
     }
 
     private void fileTypeDialogStart() {
-        FileTypeDialogFragment
-                .newInstance(R.string.export_all_title, R.string.export_all_option)
-                .show(getSupportFragmentManager(), FileTypeDialogFragment.FILE_TYPE_DIALOG_TAG);
+        FileTypeDialogFragment.showDialog(getSupportFragmentManager(), R.string.export_all_title, R.string.export_all_option);
     }
 
     @Override

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

@@ -27,7 +27,6 @@ import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 
-import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.TracksColumns;
@@ -69,7 +68,7 @@ public class ExportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
         this.trackFileFormat = trackFileFormat;
         this.directory = directory;
         context = exportActivity.getApplicationContext();
-        contentProviderUtils = ContentProviderUtils.Factory.get(context);
+        contentProviderUtils = new ContentProviderUtils(context);
 
         completed = false;
         processedTrackCount = 0;
@@ -99,8 +98,8 @@ public class ExportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
     protected Boolean doInBackground(Void... params) {
         try {
             Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
-            boolean isRecording = PreferencesUtils.getLong(exportActivity, R.string.recording_track_id_key) != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-            boolean isPaused = PreferencesUtils.getBoolean(exportActivity, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            boolean isRecording = PreferencesUtils.isRecording(exportActivity);
+            boolean isPaused = PreferencesUtils.isRecordingTrackPaused(exportActivity);
             // Get the wake lock if not recording or paused
             if (!isRecording || isPaused) {
                 wakeLock = SystemUtils.acquireWakeLock(exportActivity, wakeLock);

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

@@ -26,7 +26,8 @@ import androidx.annotation.NonNull;
 import java.io.OutputStream;
 
 import de.dennisguse.opentracks.content.ContentProviderUtils;
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
+import de.dennisguse.opentracks.content.LocationFactory;
+import de.dennisguse.opentracks.content.LocationIterator;
 import de.dennisguse.opentracks.content.SensorDataSetLocation;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.Waypoint;
@@ -63,7 +64,7 @@ public class FileTrackExporter implements TrackExporter {
     }
 
     @Override
-    public boolean writeTrack(Context context, @NonNull OutputStream outputStream) {
+    public boolean writeTrack(@NonNull Context context, @NonNull OutputStream outputStream) {
         try {
             trackWriter.prepare(outputStream);
             trackWriter.writeHeader(tracks);
@@ -209,7 +210,7 @@ public class FileTrackExporter implements TrackExporter {
      *
      * @author Jimmy Shih
      */
-    private class TrackWriterLocationFactory implements ContentProviderUtils.LocationFactory {
+    private class TrackWriterLocationFactory extends LocationFactory {
         Location currentLocation;
         Location lastLocation;
 

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

@@ -49,9 +49,10 @@ public class KmlTrackWriter implements TrackWriter {
     private static final String END_STYLE = "end";
     private static final String TRACK_STYLE = "track";
     private static final String SCHEMA_ID = "schema";
-    private static final String CADENCE = "cadence";
-    private static final String HEART_RATE = "heart_rate";
-    private static final String POWER = "power";
+
+    private static final String SENSOR_TYPE_CADENCE = "cadence";
+    private static final String SENSOR_TYPE_HEART_RATE = "heart_rate";
+    private static final String SENSOR_TYPE_POWER = "power";
 
     private static final String WAYPOINT_ICON = "http://maps.google.com/mapfiles/kml/pushpin/blue-pushpin.png";
     private static final String STATISTICS_ICON = "http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png";
@@ -71,9 +72,6 @@ public class KmlTrackWriter implements TrackWriter {
     private List<Float> powerList = new ArrayList<>();
     private List<Float> cadenceList = new ArrayList<>();
     private List<Float> heartRateList = new ArrayList<>();
-    private boolean hasPower;
-    private boolean hasCadence;
-    private boolean hasHeartRate;
 
     private Location startLocation;
 
@@ -91,7 +89,7 @@ public class KmlTrackWriter implements TrackWriter {
         this.exportSensorData = exportSensorData;
         this.exportPhotos = exportPhotos;
         this.descriptionGenerator = new DescriptionGeneratorImpl(context);
-        this.contentProviderUtils = ContentProviderUtils.Factory.get(context);
+        this.contentProviderUtils = new ContentProviderUtils(context);
     }
 
     @Override
@@ -132,9 +130,9 @@ public class KmlTrackWriter implements TrackWriter {
             printWriter.println("<Schema id=\"" + SCHEMA_ID + "\">");
 
             if (exportSensorData) {
-                writeSensorStyle(POWER, context.getString(R.string.description_sensor_power));
-                writeSensorStyle(CADENCE, context.getString(R.string.description_sensor_cadence));
-                writeSensorStyle(HEART_RATE, context.getString(R.string.description_sensor_heart_rate));
+                writeSensorStyle(SENSOR_TYPE_POWER, context.getString(R.string.description_sensor_power));
+                writeSensorStyle(SENSOR_TYPE_CADENCE, context.getString(R.string.description_sensor_cadence));
+                writeSensorStyle(SENSOR_TYPE_HEART_RATE, context.getString(R.string.description_sensor_heart_rate));
             }
             printWriter.println("</Schema>");
         }
@@ -235,9 +233,6 @@ public class KmlTrackWriter implements TrackWriter {
     public void writeOpenSegment() {
         if (printWriter != null) {
             printWriter.println("<gx:Track>");
-            hasPower = false;
-            hasCadence = false;
-            hasHeartRate = false;
             powerList.clear();
             cadenceList.clear();
             heartRateList.clear();
@@ -250,14 +245,14 @@ public class KmlTrackWriter implements TrackWriter {
             printWriter.println("<ExtendedData>");
             printWriter.println("<SchemaData schemaUrl=\"#" + SCHEMA_ID + "\">");
             if (exportSensorData) {
-                if (hasPower) {
-                    writeSensorData(powerList, POWER);
+                if (powerList.size() > 0) {
+                    writeSensorData(powerList, SENSOR_TYPE_POWER);
                 }
-                if (hasCadence) {
-                    writeSensorData(cadenceList, CADENCE);
+                if (cadenceList.size() > 0) {
+                    writeSensorData(cadenceList, SENSOR_TYPE_CADENCE);
                 }
-                if (hasHeartRate) {
-                    writeSensorData(heartRateList, HEART_RATE);
+                if (heartRateList.size() > 0) {
+                    writeSensorData(heartRateList, SENSOR_TYPE_HEART_RATE);
                 }
             }
             printWriter.println("</SchemaData>");
@@ -466,11 +461,11 @@ public class KmlTrackWriter implements TrackWriter {
      * Writes a sensor style.
      *
      * @param name        the name of the sesnor
-     * @param displayName the sensor display name
+     * @param sensorType the sensor display name
      */
-    private void writeSensorStyle(String name, String displayName) {
-        printWriter.println("<gx:SimpleArrayField name=\"" + name + "\" type=\"int\">");
-        printWriter.println("<displayName>" + StringUtils.formatCData(displayName) + "</displayName>");
+    private void writeSensorStyle(String name, String sensorType) {
+        printWriter.println("<gx:SimpleArrayField name=\"" + name + "\" type=\"float\">");
+        printWriter.println("<displayName>" + StringUtils.formatCData(sensorType) + "</displayName>");
         printWriter.println("</gx:SimpleArrayField>");
     }
 }

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

@@ -19,7 +19,6 @@ package de.dennisguse.opentracks.io.file.exporter;
 import android.content.Context;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import java.io.OutputStream;
 
@@ -37,5 +36,5 @@ public interface TrackExporter {
      * @param context the context
      * @param outputStream the output stream
      */
-    boolean writeTrack(@Nullable Context context, @NonNull OutputStream outputStream);
+    boolean writeTrack(@NonNull Context context, @NonNull OutputStream outputStream);
 }

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

@@ -39,8 +39,9 @@ import javax.xml.parsers.SAXParserFactory;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
 import de.dennisguse.opentracks.content.DescriptionGeneratorImpl;
+import de.dennisguse.opentracks.content.LocationFactory;
+import de.dennisguse.opentracks.content.LocationIterator;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.content.Waypoint.WaypointType;
@@ -102,7 +103,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
         this.context = context;
         this.importTrackId = importTrackId;
         this.contentProviderUtils = contentProviderUtils;
-        this.recordingDistanceInterval = PreferencesUtils.getInt(context, R.string.recording_distance_interval_key, PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT);
+        this.recordingDistanceInterval = PreferencesUtils.getRecordingDistanceInterval(context);
         trackIds = new ArrayList<>();
         waypoints = new ArrayList<>();
     }
@@ -165,7 +166,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
         TripStatisticsUpdater trackTripStatisticstrackUpdater = new TripStatisticsUpdater(track.getTripStatistics().getStartTime());
         TripStatisticsUpdater markerTripStatisticsUpdater = new TripStatisticsUpdater(track.getTripStatistics().getStartTime());
 
-        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(track.getId(), -1L, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY)) {
+        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(track.getId(), -1L, false, LocationFactory.DEFAULT_LOCATION_FACTORY)) {
 
             while (true) {
                 if (waypoint == null) {
@@ -384,8 +385,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
      * @param message the message
      */
     protected String createErrorMessage(String message) {
-        return String.format(Locale.US, "Parsing error at line: %d column: %d. %s",
-                locator.getLineNumber(), locator.getColumnNumber(), message);
+        return String.format(Locale.US, "Parsing error at line: %d column: %d. %s", locator.getLineNumber(), locator.getColumnNumber(), message);
     }
 
     /**

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

@@ -55,7 +55,7 @@ public class GpxFileTrackImporter extends AbstractFileTrackImporter {
      * @param context the context
      */
     public GpxFileTrackImporter(Context context) {
-        this(context, ContentProviderUtils.Factory.get(context));
+        this(context, new ContentProviderUtils(context));
     }
 
     @VisibleForTesting

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

@@ -85,9 +85,7 @@ public class ImportActivity extends FragmentActivity implements FileTypeDialogFr
     }
 
     private void fileTypeDialogStart() {
-        FileTypeDialogFragment
-                .newInstance(R.string.import_selection_title, R.string.import_selection_option)
-                .show(getSupportFragmentManager(), FileTypeDialogFragment.FILE_TYPE_DIALOG_TAG);
+        FileTypeDialogFragment.showDialog(getSupportFragmentManager(), R.string.import_selection_title, R.string.import_selection_option);
     }
 
     @Override

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

@@ -28,7 +28,6 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
-import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
@@ -46,7 +45,9 @@ public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
     private static final String TAG = ImportAsyncTask.class.getSimpleName();
     private final TrackFileFormat trackFileFormat;
     private final String path;
-    private final Context context;
+    // TODO Can be removed, or?
+    private Context context;
+    // TODO Use weak reference
     private ImportActivity importActivity;
     private WakeLock wakeLock;
 
@@ -101,10 +102,10 @@ public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
     @Override
     protected Boolean doInBackground(Void... params) {
         try {
-            Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
+            Thread.currentThread().setPriority(Thread.MAX_PRIORITY); // TODO Should be set to previous level at the end of this method.
             // Get the wake lock if not recording or paused
-            boolean isRecording = PreferencesUtils.getLong(importActivity, R.string.recording_track_id_key) != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-            boolean isPaused = PreferencesUtils.getBoolean(importActivity, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            boolean isRecording = PreferencesUtils.isRecording(importActivity);
+            boolean isPaused = PreferencesUtils.isRecordingTrackPaused(importActivity);
             if (!isRecording || isPaused) {
                 wakeLock = SystemUtils.acquireWakeLock(importActivity, wakeLock);
             }
@@ -150,9 +151,11 @@ public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
 
     @Override
     protected void onCancelled() {
+        context = null;
         completed = true;
         if (importActivity != null) {
             importActivity.onAsyncTaskCompleted(importTrackCount, totalTrackCount);
+            importActivity = null;
         }
     }
 
@@ -164,17 +167,17 @@ public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
     private boolean importFile(final File file) {
         TrackImporter trackImporter;
         if (trackFileFormat == TrackFileFormat.GPX) {
-            trackImporter = new GpxFileTrackImporter(context);
+            trackImporter = new GpxFileTrackImporter(importActivity);
         } else { //KML or KMZ
             String extension = FileUtils.getExtension(file.getName());
             if (TrackFileFormat.KML_ONLY_TRACK.getExtension().equals(extension)) {
-                trackImporter = new KmlFileTrackImporter(context, -1L);
+                trackImporter = new KmlFileTrackImporter(importActivity, -1L);
             } else {
-                ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
+                ContentProviderUtils contentProviderUtils = new ContentProviderUtils(importActivity);
                 Uri uri = contentProviderUtils.insertTrack(new Track());
                 long newId = Long.parseLong(uri.getLastPathSegment());
 
-                trackImporter = new KmzTrackImporter(context, newId);
+                trackImporter = new KmzTrackImporter(importActivity, newId);
             }
         }
 

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

@@ -19,6 +19,7 @@ package de.dennisguse.opentracks.io.file.importer;
 import android.content.Context;
 import android.location.Location;
 import android.net.Uri;
+import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 
@@ -39,6 +40,8 @@ import de.dennisguse.opentracks.content.sensor.SensorDataSet;
  */
 public class KmlFileTrackImporter extends AbstractFileTrackImporter {
 
+    private static final String TAG = KmlFileTrackImporter.class.getSimpleName();
+
     private static final String CADENCE = "cadence";
     private static final String HEART_RATE = "heart_rate";
     private static final String POWER = "power";
@@ -65,11 +68,11 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
     private static final String ATTRIBUTE_NAME = "name";
 
     private boolean trackStarted = false;
-    private String sensorName;
+    private String sensorType;
     private ArrayList<Location> locationList;
-    private ArrayList<Integer> cadenceList;
-    private ArrayList<Integer> heartRateList;
-    private ArrayList<Integer> powerList;
+    private ArrayList<Float> cadenceList;
+    private ArrayList<Float> heartRateList;
+    private ArrayList<Float> powerList;
 
     /**
      * Constructor.
@@ -78,7 +81,7 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
      * @param importTrackId track id to import to. -1L to import to a new track.
      */
     public KmlFileTrackImporter(Context context, long importTrackId) {
-        this(context, importTrackId, ContentProviderUtils.Factory.get(context));
+        this(context, importTrackId, new ContentProviderUtils(context));
     }
 
     @VisibleForTesting
@@ -179,6 +182,10 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
      * On waypoint end.
      */
     private void onWaypointEnd() throws SAXException {
+        if (waypointType == null) {
+            return;
+        }
+
         // Add a waypoint if the waypointType matches
         WaypointType type;
         switch (waypointType) {
@@ -229,20 +236,30 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
      */
     private void onTrackSegmentEnd() {
         // Close a track segment by inserting the segment locations
-        boolean hasHeartRate = heartRateList.size() == locationList.size();
-        boolean hasCadence = cadenceList.size() == locationList.size();
-        boolean hasPower = powerList.size() == locationList.size();
-
         for (int i = 0; i < locationList.size(); i++) {
             Location location = locationList.get(i);
 
-            if (!hasPower && !hasCadence && !hasHeartRate) {
+            boolean hasSensorData = false;
+            float heartrate = SensorDataSet.DATA_UNAVAILABLE;
+            float cadence = SensorDataSet.DATA_UNAVAILABLE;
+            float power = SensorDataSet.DATA_UNAVAILABLE;
+
+            if (i < heartRateList.size()) {
+                heartrate = heartRateList.get(i);
+                hasSensorData = true;
+            }
+            if (i < cadenceList.size()) {
+                cadence = cadenceList.get(i);
+                hasSensorData = true;
+            }
+            if (i < powerList.size()) {
+                power = powerList.get(i);
+                hasSensorData = true;
+            }
+
+            if (!hasSensorData) {
                 insertTrackPoint(location);
             } else {
-                float heartrate = hasHeartRate ? heartRateList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-                float cadence = hasHeartRate ? cadenceList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-                float power = hasHeartRate ? powerList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-
                 SensorDataSetLocation sensorDataSetLocation = new SensorDataSetLocation(location, new SensorDataSet(heartrate, cadence, power, SensorDataSet.DATA_UNAVAILABLE, location.getTime()));
                 insertTrackPoint(sensorDataSetLocation);
             }
@@ -277,7 +294,7 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
      * On sensor data start. gx:SimpleArrayData start tag.
      */
     private void onSensorDataStart(Attributes attributes) {
-        sensorName = attributes.getValue(ATTRIBUTE_NAME);
+        sensorType = attributes.getValue(ATTRIBUTE_NAME);
     }
 
     /**
@@ -291,18 +308,24 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
         if (content.equals("")) {
             return;
         }
-        int value;
+        float value;
         try {
-            value = Integer.parseInt(content);
+            value = Float.valueOf(content);
         } catch (NumberFormatException e) {
             throw new SAXException(createErrorMessage("Unable to parse gx:value:" + content), e);
         }
-        if (POWER.equals(sensorName)) {
-            powerList.add(value);
-        } else if (HEART_RATE.equals(sensorName)) {
-            heartRateList.add(value);
-        } else if (CADENCE.equals(sensorName)) {
-            cadenceList.add(value);
+        switch (sensorType) {
+            case POWER:
+                powerList.add(value);
+                break;
+            case HEART_RATE:
+                heartRateList.add(value);
+                break;
+            case CADENCE:
+                cadenceList.add(value);
+                break;
+            default:
+                Log.w(TAG, "Data from sensor " + sensorType + " is not (yet) supported.");
         }
     }
 }

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

@@ -72,7 +72,7 @@ public class KmzTrackImporter implements TrackImporter {
                     return -1L;
                 }
                 String fileName = zipEntry.getName();
-                if (fileName.equals(KmzTrackExporter.KMZ_KML_FILE)) {
+                if (KmzTrackExporter.KMZ_KML_FILE.equals(fileName)) {
                     trackId = parseKml(zipInputStream);
                     if (trackId == -1L) {
                         Log.d(TAG, "Unable to parse kml in kmz");
@@ -101,8 +101,8 @@ public class KmzTrackImporter implements TrackImporter {
      * @param trackId the trackId
      */
     private void cleanImport(long trackId) {
-        if (trackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-            ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
+        if (PreferencesUtils.isRecording(trackId)) {
+            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
             contentProviderUtils.deleteTrack(context, trackId);
         }
 
@@ -125,15 +125,10 @@ public class KmzTrackImporter implements TrackImporter {
      * @return the imported track id or -1L
      */
     private long parseKml(ZipInputStream zipInputStream) throws IOException {
-        ByteArrayInputStream byteArrayInputStream = null;
-        try {
-            KmlFileTrackImporter kmlFileTrackImporter = new KmlFileTrackImporter(context, importTrackId);
-            byteArrayInputStream = new ByteArrayInputStream(getKml(zipInputStream));
+        KmlFileTrackImporter kmlFileTrackImporter = new KmlFileTrackImporter(context, importTrackId);
+
+        try (ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(getKml(zipInputStream))) {
             return kmlFileTrackImporter.importFile(byteArrayInputStream);
-        } finally {
-            if (byteArrayInputStream != null) {
-                byteArrayInputStream.close();
-            }
         }
     }
 
@@ -160,12 +155,10 @@ public class KmzTrackImporter implements TrackImporter {
      * @param fileName       the file name
      */
     private void readImageFile(ZipInputStream zipInputStream, String fileName) throws IOException {
-        if (importTrackId == -1L) {
-            return;
-        }
-        if (fileName.equals("")) {
+        if (importTrackId == -1L || fileName.equals("")) {
             return;
         }
+
         File dir = FileUtils.getPhotoDir(importTrackId);
         FileUtils.ensureDirectoryExists(dir);
         File file = new File(dir, fileName);

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

@@ -33,10 +33,6 @@ public class LocationManagerConnector {
     private final Handler handler;
     private final LocationManager locationManager;
 
-    private LocationListener requestLocationUpdates;
-    private float requestLocationUpdatesDistance;
-    private long requestLocationUpdatesTime;
-
     public LocationManagerConnector(Context context, Looper looper) {
         this.handler = new Handler(looper);
 
@@ -55,10 +51,7 @@ public class LocationManagerConnector {
             @Override
             @SuppressLint("MissingPermission")
             public void run() {
-                requestLocationUpdatesTime = minTime;
-                requestLocationUpdatesDistance = minDistance;
-                requestLocationUpdates = locationListener;
-                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, requestLocationUpdatesTime, requestLocationUpdatesDistance, locationListener);
+                locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, minTime, minDistance, locationListener);
             }
         });
     }
@@ -70,6 +63,5 @@ public class LocationManagerConnector {
      */
     public void removeLocationUpdates(final LocationListener locationListener) {
         locationManager.removeUpdates(locationListener);
-        requestLocationUpdates = null;
     }
 }

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

@@ -16,9 +16,6 @@
 
 package de.dennisguse.opentracks.services;
 
-import android.app.Notification;
-import android.app.NotificationChannel;
-import android.app.NotificationManager;
 import android.app.PendingIntent;
 import android.app.Service;
 import android.content.Context;
@@ -30,7 +27,6 @@ import android.location.Location;
 import android.location.LocationListener;
 import android.location.LocationManager;
 import android.net.Uri;
-import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.IBinder;
@@ -38,7 +34,6 @@ import android.os.PowerManager.WakeLock;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
-import androidx.core.app.NotificationCompat;
 import androidx.core.app.TaskStackBuilder;
 
 import java.util.concurrent.ExecutorService;
@@ -48,17 +43,17 @@ import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackDetailActivity;
 import de.dennisguse.opentracks.TrackListActivity;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
-import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
 import de.dennisguse.opentracks.content.CustomContentProvider;
 import de.dennisguse.opentracks.content.DescriptionGeneratorImpl;
+import de.dennisguse.opentracks.content.LocationFactory;
+import de.dennisguse.opentracks.content.LocationIterator;
 import de.dennisguse.opentracks.content.SensorDataSetLocation;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointCreationRequest;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
-import de.dennisguse.opentracks.services.sensors.RemoteSensorManager;
-import de.dennisguse.opentracks.services.sensors.RemoteSensorManagerFactory;
+import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
 import de.dennisguse.opentracks.services.tasks.AnnouncementPeriodicTaskFactory;
 import de.dennisguse.opentracks.services.tasks.PeriodicTaskExecutor;
 import de.dennisguse.opentracks.services.tasks.SplitPeriodicTaskFactory;
@@ -81,13 +76,13 @@ import de.dennisguse.opentracks.util.UnitConversions;
 public class TrackRecordingService extends Service {
 
     // The name of extra intent property to indicate whether we want to resume a previously recorded track.
-    public static final String RESUME_TRACK_EXTRA_NAME = "de.dennisguse.opentracks.RESUME_TRACK";
+    public static final String RESUME_TRACK_EXTRA_NAME = "RESUME_TRACK";
+    private static final int NOTIFICATION_ID = 123;
 
     public static final double PAUSE_LATITUDE = 100.0;
     public static final double RESUME_LATITUDE = 200.0;
 
     // Anything faster than that (in meters per second) will be considered moving.
-
     public static final double MAX_NO_MOVEMENT_SPEED = 0.224;
     @VisibleForTesting
     static final int MAX_AUTO_RESUME_TRACK_RETRY_ATTEMPTS = 3;
@@ -96,13 +91,13 @@ public class TrackRecordingService extends Service {
     private static final long ONE_MINUTE = (long) (UnitConversions.MIN_TO_S * UnitConversions.S_TO_MS);
     // The following variables are set in onCreate:
     private ExecutorService executorService;
-    private Context context;
     private ContentProviderUtils contentProviderUtils;
     private Handler handler;
     private LocationManagerConnector locationManagerConnector;
     private PeriodicTaskExecutor voiceExecutor;
     private PeriodicTaskExecutor splitExecutor;
     private SharedPreferences sharedPreferences;
+    private TrackRecordingServiceNotificationManager notificationManager;
     private long recordingTrackId;
     private boolean recordingTrackPaused;
     private LocationListenerPolicy locationListenerPolicy;
@@ -118,59 +113,56 @@ public class TrackRecordingService extends Service {
     private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_id_key))) {
-                long trackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
+            Context context = TrackRecordingService.this;
+            if (PreferencesUtils.isKey(TrackRecordingService.this, R.string.recording_track_id_key, key)) {
                 // Only through the TrackRecordingService can one stop a recording and set the recordingTrackId to -1L.
-                if (trackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-                    recordingTrackId = trackId;
+                if (PreferencesUtils.isRecording(TrackRecordingService.this)) {
+                    recordingTrackId = PreferencesUtils.getRecordingTrackId(TrackRecordingService.this);
                 }
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_paused_key))) {
-                recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+            if (PreferencesUtils.isKey(context, R.string.recording_track_paused_key, key)) {
+                recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(context);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.stats_units_key))) {
+            if (PreferencesUtils.isKey(context, R.string.stats_units_key, key)) {
                 boolean metricUnits = PreferencesUtils.isMetricUnits(context);
                 voiceExecutor.setMetricUnits(metricUnits);
                 splitExecutor.setMetricUnits(metricUnits);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.voice_frequency_key))) {
-                voiceExecutor.setTaskFrequency(PreferencesUtils.getInt(context, R.string.voice_frequency_key, PreferencesUtils.VOICE_FREQUENCY_DEFAULT));
+            if (PreferencesUtils.isKey(context, R.string.voice_frequency_key, key)) {
+                voiceExecutor.setTaskFrequency(PreferencesUtils.getVoiceFrequency(context));
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.split_frequency_key))) {
-                splitExecutor.setTaskFrequency(PreferencesUtils.getInt(context, R.string.split_frequency_key, PreferencesUtils.SPLIT_FREQUENCY_DEFAULT));
+            if (PreferencesUtils.isKey(context, R.string.split_frequency_key, key)) {
+                splitExecutor.setTaskFrequency(PreferencesUtils.getSplitFrequency(context));
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.min_recording_interval_key))) {
-                int minRecordingInterval = PreferencesUtils.getInt(context, R.string.min_recording_interval_key, PreferencesUtils.MIN_RECORDING_INTERVAL_DEFAULT);
-                switch (minRecordingInterval) {
-                    case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_BATTERY_LIFE:
-                        // Choose battery life over moving time accuracy.
-                        locationListenerPolicy = new AdaptiveLocationListenerPolicy(30 * UnitConversions.ONE_SECOND, 5 * ONE_MINUTE, 5);
-                        break;
-                    case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_ACCURACY:
-                        // Get all the updates.
-                        locationListenerPolicy = new AdaptiveLocationListenerPolicy(UnitConversions.ONE_SECOND, 30 * UnitConversions.ONE_SECOND, 0);
-                        break;
-                    default:
-                        locationListenerPolicy = new AbsoluteLocationListenerPolicy(minRecordingInterval * UnitConversions.ONE_SECOND);
+            if (PreferencesUtils.isKey(context, R.string.min_recording_interval_key, key)) {
+                int minRecordingInterval = PreferencesUtils.getMinRecordingInterval(context);
+                if (minRecordingInterval == PreferencesUtils.getMinRecordingIntervalAdaptBatteryLife(context)) {
+                    // Choose battery life over moving time accuracy.
+                    locationListenerPolicy = new AdaptiveLocationListenerPolicy(30 * UnitConversions.ONE_SECOND, 5 * ONE_MINUTE, 5);
+                } else if (minRecordingInterval == PreferencesUtils.getMinRecordingIntervalAdaptAccuracy(context)) {
+                    // Get all the updates.
+                    locationListenerPolicy = new AdaptiveLocationListenerPolicy(UnitConversions.ONE_SECOND, 30 * UnitConversions.ONE_SECOND, 0);
+                } else {
+                    locationListenerPolicy = new AbsoluteLocationListenerPolicy(minRecordingInterval * UnitConversions.ONE_SECOND);
                 }
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_distance_interval_key))) {
-                recordingDistanceInterval = PreferencesUtils.getInt(context, R.string.recording_distance_interval_key, PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT);
+            if (PreferencesUtils.isKey(context, R.string.recording_distance_interval_key, key)) {
+                recordingDistanceInterval = PreferencesUtils.getRecordingDistanceInterval(context);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.max_recording_distance_key))) {
-                maxRecordingDistance = PreferencesUtils.getInt(context, R.string.max_recording_distance_key, PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT);
+            if (PreferencesUtils.isKey(context, R.string.max_recording_distance_key, key)) {
+                maxRecordingDistance = PreferencesUtils.getMaxRecordingDistance(context);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_gps_accuracy_key))) {
-                recordingGpsAccuracy = PreferencesUtils.getInt(context, R.string.recording_gps_accuracy_key, PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT);
+            if (PreferencesUtils.isKey(context, R.string.recording_gps_accuracy_key, key)) {
+                recordingGpsAccuracy = PreferencesUtils.getRecordingGPSAccuracy(context);
             }
-            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.auto_resume_track_timeout_key))) {
-                autoResumeTrackTimeout = PreferencesUtils.getInt(context, R.string.auto_resume_track_timeout_key, PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_DEFAULT);
+            if (PreferencesUtils.isKey(context, R.string.auto_resume_track_timeout_key, key)) {
+                autoResumeTrackTimeout = PreferencesUtils.getAutoResumeTrackTimeout(context);
             }
         }
     };
     private TripStatisticsUpdater markerTripStatisticsUpdater;
     private WakeLock wakeLock;
-    private RemoteSensorManager remoteSensorManager;
+    private BluetoothRemoteSensorManager remoteSensorManager;
     private Location lastLocation;
     private boolean currentSegmentHasLocation;
     private boolean isIdle; // true if idle
@@ -223,14 +215,14 @@ public class TrackRecordingService extends Service {
     public void onCreate() {
         super.onCreate();
         executorService = Executors.newSingleThreadExecutor();
-        context = this;
-        contentProviderUtils = ContentProviderUtils.Factory.get(this);
+        contentProviderUtils = new ContentProviderUtils(this);
         handler = new Handler();
         locationManagerConnector = new LocationManagerConnector(this, handler.getLooper());
         voiceExecutor = new PeriodicTaskExecutor(this, new AnnouncementPeriodicTaskFactory());
         splitExecutor = new PeriodicTaskExecutor(this, new SplitPeriodicTaskFactory());
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
         sharedPreferences.registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
+        notificationManager = new TrackRecordingServiceNotificationManager(this);
 
         // onSharedPreferenceChanged might not set recordingTrackId.
         recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
@@ -267,12 +259,12 @@ public class TrackRecordingService extends Service {
     @Override
     public void onDestroy() {
         if (remoteSensorManager != null) {
-            RemoteSensorManagerFactory.releaseSystemSensorManager();
+            remoteSensorManager.stop();
             remoteSensorManager = null;
         }
 
         // Reverse order from onCreate
-        showNotification(false);
+        showNotification(false); //TODO Why?
 
         handler.removeCallbacks(registerLocationRunnable);
         unregisterLocationListener();
@@ -310,7 +302,7 @@ public class TrackRecordingService extends Service {
      * Returns true if the service is recording.
      */
     public boolean isRecording() {
-        return recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        return PreferencesUtils.isRecording(recordingTrackId);
     }
 
     /**
@@ -405,40 +397,6 @@ public class TrackRecordingService extends Service {
         return Long.parseLong(uri.getLastPathSegment());
     }
 
-    /**
-     * Starts the service as a foreground service.
-     *
-     * @param pendingIntent the notification pending intent
-     * @param messageId     the notification message id
-     */
-    @VisibleForTesting
-    protected void startForegroundService(PendingIntent pendingIntent, int messageId) {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            NotificationChannel notificationChannel = new NotificationChannel(getString(R.string.app_name), getString(R.string.app_name), NotificationManager.IMPORTANCE_DEFAULT);
-            NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
-            if (manager != null) {
-                manager.createNotificationChannel(notificationChannel);
-            }
-        }
-        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, getString(R.string.app_name))
-                .setContentIntent(pendingIntent)
-                .setContentText(getString(messageId))
-                .setContentTitle(getString(R.string.app_name))
-                .setOngoing(true)
-                .setSmallIcon(R.drawable.ic_logo_color_24dp)
-                .setCategory(Notification.CATEGORY_SERVICE)
-                .setWhen(System.currentTimeMillis());
-        startForeground(1, builder.build());
-    }
-
-    /**
-     * Stops the service as a foreground service.
-     */
-    @VisibleForTesting
-    protected void stopForegroundService() {
-        stopForeground(true);
-    }
-
     /**
      * Handles start command.
      *
@@ -447,7 +405,8 @@ public class TrackRecordingService extends Service {
      */
     private void handleStartCommand(Intent intent, int startId) {
         // Check if the service is called to resume track (from phone reboot)
-        if (intent != null && intent.getBooleanExtra(RESUME_TRACK_EXTRA_NAME, false) && !shouldResumeTrack()) {
+        boolean resumeTrackRequested = intent.getBooleanExtra(RESUME_TRACK_EXTRA_NAME, false);
+        if (resumeTrackRequested && !shouldResumeTrack()) {
             Log.i(TAG, "Stop resume track.");
             updateRecordingState(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, true);
             stopSelfResult(startId);
@@ -465,17 +424,19 @@ public class TrackRecordingService extends Service {
             return false;
         }
 
-        int retries = PreferencesUtils.getInt(this, R.string.auto_resume_track_current_retry_key, PreferencesUtils.AUTO_RESUME_TRACK_CURRENT_RETRY_DEFAULT);
+        int retries = PreferencesUtils.getAutoResumeTrackCurrentRetryDefault(this);
         if (retries >= MAX_AUTO_RESUME_TRACK_RETRY_ATTEMPTS) {
             Log.d(TAG, "Not resuming. Exceeded maximum retry attempts.");
             return false;
         }
-        PreferencesUtils.setInt(this, R.string.auto_resume_track_current_retry_key, retries + 1);
+        PreferencesUtils.incrementAutoResumeTrackCurrentRetryDefault(this);
 
-        if (autoResumeTrackTimeout == PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_NEVER) {
+        if (autoResumeTrackTimeout == Integer.parseInt(getResources().getString(R.string.auto_resume_track_timeout_never))) {
             Log.d(TAG, "Not resuming. Auto-resume track timeout set to never.");
             return false;
-        } else if (autoResumeTrackTimeout == PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_ALWAYS) {
+        }
+
+        if (autoResumeTrackTimeout == Integer.parseInt(getResources().getString(R.string.auto_resume_track_timeout_always))) {
             Log.d(TAG, "Resuming. Auto-resume track timeout set to always.");
             return true;
         }
@@ -509,13 +470,13 @@ public class TrackRecordingService extends Service {
 
         // Update shared preferences
         updateRecordingState(trackId, false);
-        PreferencesUtils.setInt(this, R.string.auto_resume_track_current_retry_key, 0);
+        PreferencesUtils.resetAutoResumeTrackCurrentRetryDefault(this);
 
         // Update database
         track.setId(trackId);
         track.setName(TrackNameUtils.getTrackName(this, trackId, now));
 
-        String category = PreferencesUtils.getString(this, R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
+        String category = PreferencesUtils.getDefaultActivity(this);
         track.setCategory(category);
         track.setIcon(TrackIconUtils.getIconValue(this, category));
         track.setTripStatistics(trackTripStatisticsUpdater.getTripStatistics());
@@ -546,7 +507,7 @@ public class TrackRecordingService extends Service {
         }
         markerTripStatisticsUpdater = new TripStatisticsUpdater(markerStartTime);
 
-        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(track.getId(), -1L, false, ContentProviderUtils.DEFAULT_LOCATION_FACTORY)) {
+        try (LocationIterator locationIterator = contentProviderUtils.getTrackPointLocationIterator(track.getId(), -1L, false, LocationFactory.DEFAULT_LOCATION_FACTORY)) {
 
             while (locationIterator.hasNext()) {
                 Location location = locationIterator.next();
@@ -595,7 +556,8 @@ public class TrackRecordingService extends Service {
      */
     private void startRecording(boolean trackStarted) {
         // Update instance variables
-        remoteSensorManager = RemoteSensorManagerFactory.getSystemSensorManager(this);
+        remoteSensorManager = new BluetoothRemoteSensorManager(this);
+        remoteSensorManager.start();
         lastLocation = null;
         currentSegmentHasLocation = false;
         isIdle = false;
@@ -678,6 +640,8 @@ public class TrackRecordingService extends Service {
         }
 
         endRecording(false, recordingTrackId);
+
+        notificationManager.updateContent(getString(R.string.generic_paused));
     }
 
     /**
@@ -693,7 +657,7 @@ public class TrackRecordingService extends Service {
 
         // Update instance variables
         if (remoteSensorManager != null) {
-            RemoteSensorManagerFactory.releaseSystemSensorManager();
+            remoteSensorManager.stop();
             remoteSensorManager = null;
         }
         lastLocation = null;
@@ -764,6 +728,8 @@ public class TrackRecordingService extends Service {
                 return;
             }
 
+            notificationManager.updateLocation(this, location, recordingGpsAccuracy);
+
             if (!location.hasAccuracy() || location.getAccuracy() >= recordingGpsAccuracy) {
                 Log.d(TAG, "Ignore onLocationChangedAsync. Poor accuracy.");
                 return;
@@ -799,10 +765,7 @@ public class TrackRecordingService extends Service {
             }
 
             if (!LocationUtils.isValidLocation(lastValidTrackPoint)) {
-                /*
-                 * Should not happen. The current segment should have a location. Just
-                 * insert the current location.
-                 */
+                // Should not happen. The current segment should have a location. Just insert the current location.
                 insertLocation(track, location, null);
                 lastLocation = location;
                 return;
@@ -854,7 +817,7 @@ public class TrackRecordingService extends Service {
      */
     private void insertLocation(Track track, Location location, Location lastValidTrackPoint) {
         if (location == null) {
-            Log.w(TAG, "Ignore insertLocation. loation is null.");
+            Log.w(TAG, "Ignore insertLocation. location is null.");
             return;
         }
         // Do not insert if inserted already
@@ -949,33 +912,33 @@ public class TrackRecordingService extends Service {
         }
     }
 
-    /**
-     * Shows the notification.
-     *
-     * @param isGpsStarted true if GPS is started
-     */
     private void showNotification(boolean isGpsStarted) {
-        if (isRecording()) {
-            if (isPaused()) {
-                stopForegroundService();
-            } else {
-                Intent intent = IntentUtils.newIntent(this, TrackDetailActivity.class)
-                        .putExtra(TrackDetailActivity.EXTRA_TRACK_ID, recordingTrackId);
-                PendingIntent pendingIntent = TaskStackBuilder.create(this)
-                        .addParentStack(TrackDetailActivity.class).addNextIntent(intent)
-                        .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
-                startForegroundService(pendingIntent, R.string.track_record_notification);
-            }
-        } else {
-            // Not recording
-            if (isGpsStarted) {
-                Intent intent = IntentUtils.newIntent(this, TrackListActivity.class);
-                PendingIntent pendingIntent = TaskStackBuilder.create(this)
-                        .addNextIntent(intent).getPendingIntent(0, 0);
-                startForegroundService(pendingIntent, R.string.gps_starting);
-            } else {
-                stopForegroundService();
-            }
+        if ((isRecording() && isPaused()) || (!isRecording() && !isGpsStarted)) {
+            stopForeground(true);
+        }
+
+        if (isRecording() && !isPaused()) {
+            Intent intent = IntentUtils.newIntent(this, TrackDetailActivity.class)
+                    .putExtra(TrackDetailActivity.EXTRA_TRACK_ID, recordingTrackId);
+            PendingIntent pendingIntent = TaskStackBuilder.create(this)
+                    .addParentStack(TrackDetailActivity.class)
+                    .addNextIntent(intent)
+                    .getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
+
+            notificationManager.updatePendingIntent(pendingIntent);
+            notificationManager.updateContent(getString(R.string.gps_starting));
+            startForeground(NOTIFICATION_ID, notificationManager.getNotification());
+        }
+        if (!isRecording() && isGpsStarted) {
+            Intent intent = IntentUtils.newIntent(this, TrackListActivity.class);
+            PendingIntent pendingIntent = TaskStackBuilder.create(this)
+                    .addNextIntent(intent)
+                    .getPendingIntent(0, 0);
+
+            notificationManager.updatePendingIntent(pendingIntent);
+            notificationManager.updateContent(getString(R.string.gps_starting));
+
+            startForeground(NOTIFICATION_ID, notificationManager.getNotification());
         }
     }
 

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

@@ -16,7 +16,6 @@
 
 package de.dennisguse.opentracks.services;
 
-import android.app.ActivityManager;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
@@ -29,14 +28,13 @@ import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 
-import java.util.List;
-
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.TrackEditActivity;
 import de.dennisguse.opentracks.content.WaypointCreationRequest;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.ServiceUtils;
 
 /**
  * Wrapper for the track recording service.
@@ -154,7 +152,7 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
             return;
         }
 
-        if (!startIfNeeded && !isRecordingServiceRunning(context)) {
+        if (!startIfNeeded && !ServiceUtils.isTrackRecordingServiceRunning(context)) {
             Log.d(TAG, "Service is not started. Not binding it.");
             return;
         }
@@ -169,31 +167,6 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
         context.bindService(new Intent(context, TrackRecordingService.class), this, flags);
     }
 
-    /**
-     * Returns true if the recording service is running.
-     *
-     * @param context the current context
-     */
-    @Deprecated
-    public static boolean isRecordingServiceRunning(Context context) {
-        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
-        if (activityManager == null) {
-            return false;
-        }
-
-        //TODO This approach is deprecated as of API level 26 and should be replaced.
-        List<ActivityManager.RunningServiceInfo> services = activityManager.getRunningServices(Integer.MAX_VALUE);
-
-        for (ActivityManager.RunningServiceInfo serviceInfo : services) {
-            ComponentName componentName = serviceInfo.service;
-            String serviceName = componentName.getClassName();
-            if (TrackRecordingService.class.getName().equals(serviceName)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
     /**
      * Resumes the track recording service connection.
      *
@@ -201,7 +174,7 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
      */
     public void startConnection(@NonNull Context context) {
         bindIfStarted();
-        if (!isRecordingServiceRunning(context)) {
+        if (!ServiceUtils.isTrackRecordingServiceRunning(context)) {
             resetRecordingState(context);
         }
     }
@@ -226,37 +199,14 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
         }
     }
 
-    /**
-     * Stops the recording.
-     *
-     * @param context    the context
-     * @param showEditor true to show the editor
-     */
-    public void stopRecording(@NonNull Context context, boolean showEditor) {
-        ITrackRecordingService trackRecordingService = getServiceIfBound();
-        if (trackRecordingService == null) {
-            resetRecordingState(context);
-        } else {
-            try {
-                if (showEditor) {
-                    // Need to remember the recordingTrackId before calling endCurrentTrack() as endCurrentTrack() sets the value to -1L.
-                    long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
-                    trackRecordingService.endCurrentTrack();
-                    if (recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-                        Intent intent = IntentUtils.newIntent(context, TrackEditActivity.class)
-                                .putExtra(TrackEditActivity.EXTRA_TRACK_ID, recordingTrackId)
-                                .putExtra(TrackEditActivity.EXTRA_NEW_TRACK, true);
-                        context.startActivity(intent);
-                    }
-                } else {
-                    trackRecordingService.endCurrentTrack();
-                }
-            } catch (Exception e) {
-                //TODO What exception are we catching here? Should be removed...
-                Log.e(TAG, "Unable to stop recording.", e);
-            }
+    private static void resetRecordingState(Context context) {
+        if (PreferencesUtils.isRecording(context)) {
+            PreferencesUtils.setLong(context, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        }
+        boolean recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(context);
+        if (!recordingTrackPaused) {
+            PreferencesUtils.defaultRecordingTrackPaused(context);
         }
-        unbindAndStop();
     }
 
     /**
@@ -284,14 +234,36 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
         return -1L;
     }
 
-    private static void resetRecordingState(Context context) {
-        long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
-        if (recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-            PreferencesUtils.setLong(context, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
-        }
-        boolean recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
-        if (!recordingTrackPaused) {
-            PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+    /**
+     * Stops the recording.
+     *
+     * @param context    the context
+     * @param showEditor true to show the editor
+     */
+    public void stopRecording(@NonNull Context context, boolean showEditor) {
+        ITrackRecordingService trackRecordingService = getServiceIfBound();
+        if (trackRecordingService == null) {
+            resetRecordingState(context);
+        } else {
+            try {
+                if (showEditor) {
+                    // Need to remember the recordingTrackId before calling endCurrentTrack() as endCurrentTrack() sets the value to -1L.
+                    long recordingTrackId = PreferencesUtils.getRecordingTrackId(context);
+                    trackRecordingService.endCurrentTrack();
+                    if (PreferencesUtils.isRecording(context)) {
+                        Intent intent = IntentUtils.newIntent(context, TrackEditActivity.class)
+                                .putExtra(TrackEditActivity.EXTRA_TRACK_ID, recordingTrackId)
+                                .putExtra(TrackEditActivity.EXTRA_NEW_TRACK, true);
+                        context.startActivity(intent);
+                    }
+                } else {
+                    trackRecordingService.endCurrentTrack();
+                }
+            } catch (Exception e) {
+                //TODO What exception are we catching here? Should be removed...
+                Log.e(TAG, "Unable to stop recording.", e);
+            }
         }
+        unbindAndStop();
     }
 }