Release v3.9.3

* correct thread handling in ButtonDelay

Discovered in #390 for devices with API Level 25. Not fixing the whole issue, but a first step.

* fix #390 crash when stopping for older devices

The VectorDrawable ic_button_stop.xml referenced from withing the AnimatedVectorDrawable ic_button_stop_anim.xml was a problem for older devices. Now the VectorDrawable is expanded (duplicated) inside the AnimatedVectorDrawable. Now it is working. Even with the animation.

.github/FUNDING.yml

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

.github/PULL_REQUEST_TEMPLATE.md

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

.github/dependabot.yml

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

.github/workflows/codeql-analysis.yml

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

.gitignore

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

README.md

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

README_API.md

@@ -11,7 +11,7 @@ For the time being, the OpenTracks Data API can be used to implement mainly cust
 
 ## Implementation
 OpenTracks by default does not expose any data to 3rd-party applications.
-On the request of the user (i.e., pressing a button), an Intent is created that exposes the `Track` data (it's summary) as well as the `TrackPoint`s of one or more selected tracks.
+On the request of the user (i.e., pressing a button), an Intent is created that exposes the `Track` data (it's summary), the `TrackPoint`s, and the `Waypoint`s of one or more selected tracks.
 For each, one URI is provided.
 These URIs notify observers if on content changes (e.g., a new `TrackPoint` was added).
 

README_RELEASE.md

@@ -2,7 +2,7 @@
 
 ## Craft new releases
 
-1. Get next _version code_ (master branch): `git rev-list HEAD --count master`
+1. Get next _version code_ (main): `git rev-list HEAD --count main`
 2. Decide on _version name_ (semantic versioning)
 3. Manually update _version code_ and _version name_ in `build.gradle`
 4. Create changelog (`_version code_.txt`)

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.0'
+        classpath 'com.android.tools.build:gradle:4.0.1'
     }
 }
 
@@ -17,20 +17,6 @@ allprojects {
     }
 }
 
-def getVersionCode = { ->
-    try {
-        def stdout = new ByteArrayOutputStream()
-        exec {
-            commandLine 'git', 'rev-list', 'HEAD', '--count'
-            standardOutput = stdout
-        }
-        return Integer.parseInt(stdout.toString().trim())
-    }
-    catch (ignored) {
-        return -1
-    }
-}
-
 def getVersionName = { ->
     try {
         def stdout = new ByteArrayOutputStream()
@@ -51,6 +37,8 @@ def getVersionName = { ->
 
 android {
     compileOptions {
+        coreLibraryDesugaringEnabled true
+
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
@@ -59,14 +47,8 @@ android {
 
     defaultConfig {
         applicationId "de.dennisguse.opentracks"
-        manifestPlaceholders = [
-                applicationLogo: "@mipmap/ic_launcher",
-                applicationName: "@string/app_name"
-        ]
-
-        versionCode 3427
-        //versionCode getVersionCode() //Useful for debugging.
-        versionName "v3.7.5"
+        versionCode 3544
+        versionName "v3.9.3"
 
         buildConfigField "String", "VERSION_NAME_FULL", "\"${getVersionName()}\""
 
@@ -82,10 +64,6 @@ android {
         debug {
             applicationIdSuffix ".debug"
             versionNameSuffix "-debug"
-            manifestPlaceholders = [
-                    applicationLogo: "@mipmap/ic_launcher_debug",
-                    applicationName: "OpenTracks (Debug)"
-            ]
         }
 
         release {
@@ -104,20 +82,17 @@ android {
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.1.0'
+    coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.0.10'
+
+    implementation 'androidx.appcompat:appcompat:1.2.0'
     implementation 'androidx.preference:preference:1.1.1'
     implementation 'androidx.documentfile:documentfile:1.0.1'
-    implementation 'com.google.android.material:material:1.1.0'
-    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
+    implementation 'com.google.android.material:material:1.2.0'
+    implementation 'com.android.support.constraint:constraint-layout:2.0.1'
 
-    androidTestImplementation 'androidx.test:core:1.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
-    androidTestImplementation 'androidx.test.espresso:espresso-intents:3.2.0'
-    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
-    androidTestImplementation 'androidx.test:rules:1.2.0'
-    androidTestImplementation 'androidx.test:runner:1.2.0'
-    androidTestImplementation 'org.mockito:mockito-android:3.0.0'
-
-    testImplementation 'androidx.test:core:1.2.0'
-    testImplementation 'org.mockito:mockito-core:3.0.0'
+    androidTestImplementation 'androidx.test:core:1.3.0'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
+    androidTestImplementation 'androidx.test:rules:1.3.0'
+    androidTestImplementation 'androidx.test:runner:1.3.0'
+    androidTestImplementation 'org.mockito:mockito-android:3.4.6'
 }

doc/activities.txt

@@ -12,6 +12,7 @@ endlegend
 TrackListActivity --> TrackRecordingActivity : Start recording
 TrackListActivity --> SearchListActivity
 TrackListActivity --> MarkerListActivity : Show all markers
+TrackListActivity --> AggregatedStatisticsActivity : Aggregated stats
 TrackListActivity --> TrackRecordedActivity : Show track
 TrackListActivity --> TrackDeleteActivity
 
@@ -46,6 +47,9 @@ MarkerDetailActivity --> CoordinateOnMapIntent : URI
 SettingsActivity --> AboutActivity
 SettingsActivity --> HelpActivity
 SettingsActivity --> ExportActivity
-SettingsActivity --> ImportActivity
+SettingsActivity --> DirectoryChooserActivity
+SettingsActivity --> DirectoryChooserActivity
+DirectoryChooserActivity$ImportDirectoryChooserActivity --> ImportActivity
+DirectoryChooserActivity$ExportDirectoryChooserActivity --> ExportActivity
 
 @enduml

doc/data-exportimport.txt

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

doc/opentracks-schema-1.0.xsd

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

drawable-svg/ic_activity_climbing.svg

@@ -0,0 +1,474 @@
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+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
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+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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+   sodipodi:docname="ic_activity_climbing.svg"
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+   version="1.1"
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+   width="22">
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drawable-svg/ic_bluetooth_searching.svg

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+    xmlns:cc="http://creativecommons.org/ns#"
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+    version="1.1"
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drawable-svg/ic_marker_orange_pushpin_with_shadow.svg

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+<svg
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+   xmlns:xlink="http://www.w3.org/1999/xlink"
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+   inkscape:version="1.0 (4035a4fb49, 2020-05-01)"
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fastlane/metadata/android/de-DE/short_description.txt

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

fastlane/metadata/android/en-US/changelogs/3449.txt

@@ -0,0 +1,11 @@
+v3.7.6: OpenTracks
+
+Changes:
+- Landscape mode
+- Track deletion UI is now only a spinner
+- Speed is exported and imported (GPX/KML/KMZ)
+- Default export format is KMZ incl. all data and pictures
+
+Developer:
+- Replaced AsyncTasks with Threads
+- Synchronization: UUID is generated per track (not yet exported)

fastlane/metadata/android/en-US/changelogs/3466.txt

@@ -0,0 +1,16 @@
+v3.8.0: OpenTracks
+
+Breaking change:
+- GPX import/export speed, cadence, and heartrate via TrackPointExtension/v2
+
+Changes:
+- Dashboard API: provide access to markers (incl. callback to show in OpenTracks)
+- New marker icon (orange push pin, SVG)
+- Files to import can be selected via file manager
+
+Bugfixes:
+- Aggregated stats UI respects preferred rate
+- Editing a marker failed on orientation change
+
+Developer:
+- Refactored TrackRecordingService

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

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

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

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

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

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

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

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

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

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

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

@@ -1 +1 @@
-OpenTracks - Suivi d'activités sportives respectueux de votre vie privée.
+OpenTracks - Suivi d'activités sportives respectueux de votre vie privée.

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

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

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

@@ -17,18 +17,17 @@
 package de.dennisguse.opentracks.content;
 
 import android.content.ContentUris;
-import android.content.Context;
 import android.location.Location;
 import android.net.Uri;
 
-import androidx.test.core.app.ApplicationProvider;
-import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.rule.provider.ProviderTestRule;
 
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
+import org.junit.Rule;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -39,6 +38,8 @@ import de.dennisguse.opentracks.content.SearchEngine.SearchQuery;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.content.provider.CustomContentProvider;
+import de.dennisguse.opentracks.content.provider.CustomSQLiteOpenHelper;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 
 /**
@@ -48,29 +49,32 @@ import de.dennisguse.opentracks.stats.TrackStatistics;
  *
  * @author Rodrigo Damazio
  */
-@RunWith(AndroidJUnit4.class)
 public class SearchEngineTest {
 
+    private static final String TAG = SearchEngineTest.class.getSimpleName();
+
     private static final Location HERE = new Location("gps");
-    private static final long NOW = SearchEngine.OLDEST_ALLOWED_TIMESTAMP + 1000;  // After OLDEST_ALLOWED_TIMESTAMP
+    private static final long NOW = SearchEngine.OLDEST_ALLOWED_TIMESTAMP + 1000;
+
+    @Rule
+    public ProviderTestRule sqliteContentProviderRule = new ProviderTestRule.Builder(CustomContentProvider.class, ContentProviderUtils.AUTHORITY_PACKAGE).setPrefix(TAG).build();
+
     private ContentProviderUtils providerUtils;
     private SearchEngine engine;
 
-    private final Context context = ApplicationProvider.getApplicationContext();
-
-
     @Before
     public void setUp() {
-        providerUtils = new ContentProviderUtils(context);
+        providerUtils = new ContentProviderUtils(sqliteContentProviderRule.getResolver());
+
         engine = new SearchEngine(providerUtils);
     }
 
     @After
     public void tearDown() {
-        providerUtils.deleteAllTracks(context);
+        InstrumentationRegistry.getInstrumentation().getTargetContext().deleteDatabase(TAG + CustomSQLiteOpenHelper.DATABASE_NAME);
     }
 
-    private long insertTrack(String title, String description, String category, long hoursAgo) {
+    private Track.Id insertTrack(String title, String description, String category, long hoursAgo) {
         Track track = new Track();
         track.setName(title);
         track.setDescription(description);
@@ -84,18 +88,18 @@ public class SearchEngineTest {
         }
 
         Uri uri = providerUtils.insertTrack(track);
-        return ContentUris.parseId(uri);
+        return new Track.Id(ContentUris.parseId(uri));
     }
 
-    private long insertTrack(String title, String description, String category) {
+    private Track.Id insertTrack(String title, String description, String category) {
         return insertTrack(title, description, category, -1);
     }
 
-    private long insertTrack(String title, long hoursAgo) {
+    private Track.Id insertTrack(String title, long hoursAgo) {
         return insertTrack(title, "", "", hoursAgo);
     }
 
-    private long insertWaypoint(String title, String description, String category, double distance, long hoursAgo, long trackId) {
+    private Waypoint.Id insertWaypoint(String title, String description, String category, double distance, long hoursAgo, Track.Id trackId) {
         Location location = new Location(HERE);
         location.setLatitude(location.getLatitude() + distance);
         location.setLongitude(location.getLongitude() + distance);
@@ -109,22 +113,22 @@ public class SearchEngineTest {
         waypoint.setTrackId(trackId);
 
         Uri uri = providerUtils.insertWaypoint(waypoint);
-        return ContentUris.parseId(uri);
+        return new Waypoint.Id(ContentUris.parseId(uri));
     }
 
-    private long insertWaypoint(String title, String description, String category) {
-        return insertWaypoint(title, description, category, 0.0, -1, -1);
+    private Waypoint.Id insertWaypoint(String title, String description, String category) {
+        return insertWaypoint(title, description, category, 0.0, -1, null);
     }
 
-    private long insertWaypoint(String title, double distance) {
-        return insertWaypoint(title, "", "", distance, -1, -1);
+    private Waypoint.Id insertWaypoint(String title, double distance) {
+        return insertWaypoint(title, "", "", distance, -1, null);
     }
 
-    private long insertWaypoint(String title, long hoursAgo) {
-        return insertWaypoint(title, "", "", 0.0, hoursAgo, -1);
+    private Waypoint.Id insertWaypoint(String title, long hoursAgo) {
+        return insertWaypoint(title, "", "", 0.0, hoursAgo, null);
     }
 
-    private long insertWaypoint(String title, long hoursAgo, long trackId) {
+    private Waypoint.Id insertWaypoint(String title, long hoursAgo, Track.Id trackId) {
         return insertWaypoint(title, "", "", 0.0, hoursAgo, trackId);
     }
 
@@ -139,14 +143,14 @@ public class SearchEngineTest {
         // - one which will match in title and description
         // - one which will match in all fields
         insertTrack("bb", "cc", "dd");
-        long descriptionMatchId = insertTrack("bb", "aa", "cc");
-        long categoryMatchId = insertTrack("bb", "cc", "aa");
-        long titleMatchId = insertTrack("aa", "bb", "cc");
-        long titleCategoryMatchId = insertTrack("aa", "bb", "ca");
-        long titleDescriptionMatchId = insertTrack("aa", "ba", "cc");
-        long allMatchId = insertTrack("aa", "ba", "ca");
+        Track.Id descriptionMatchId = insertTrack("bb", "aa", "cc");
+        Track.Id categoryMatchId = insertTrack("bb", "cc", "aa");
+        Track.Id titleMatchId = insertTrack("aa", "bb", "cc");
+        Track.Id titleCategoryMatchId = insertTrack("aa", "bb", "ca");
+        Track.Id titleDescriptionMatchId = insertTrack("aa", "ba", "cc");
+        Track.Id allMatchId = insertTrack("aa", "ba", "ca");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
@@ -164,14 +168,14 @@ public class SearchEngineTest {
         // - one which will match in title and description
         // - one which will match in all fields
         insertWaypoint("bb", "cc", "dd");
-        long descriptionMatchId = insertWaypoint("bb", "aa", "cc");
-        long categoryMatchId = insertWaypoint("bb", "cc", "aa");
-        long titleMatchId = insertWaypoint("aa", "bb", "cc");
-        long titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
-        long titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
-        long allMatchId = insertWaypoint("aa", "ba", "ca");
+        Waypoint.Id descriptionMatchId = insertWaypoint("bb", "aa", "cc");
+        Waypoint.Id categoryMatchId = insertWaypoint("bb", "cc", "aa");
+        Waypoint.Id titleMatchId = insertWaypoint("aa", "bb", "cc");
+        Waypoint.Id titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
+        Waypoint.Id titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
+        Waypoint.Id allMatchId = insertWaypoint("aa", "ba", "ca");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
@@ -186,13 +190,13 @@ public class SearchEngineTest {
         // - one waypoint which will match by title
         // - one track which won't match
         // - one track which will match by title
-        long descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
+        Waypoint.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
         insertWaypoint("bb", "cc", "dd");
-        long titleWaypointId = insertWaypoint("aa", "bb", "cc");
+        Waypoint.Id titleWaypointId = insertWaypoint("aa", "bb", "cc");
         insertTrack("bb", "cc", "dd");
-        long trackId = insertTrack("aa", "bb", "cc");
+        Track.Id trackId = insertTrack("aa", "bb", "cc");
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Title > Description > Category.
@@ -205,11 +209,11 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointDistance() {
         // All results match text, but they're at difference distances from the user.
-        long farFarAwayId = insertWaypoint("aa", 0.3);
-        long nearId = insertWaypoint("ab", 0.1);
-        long farId = insertWaypoint("ac", 0.2);
+        Waypoint.Id farFarAwayId = insertWaypoint("aa", 0.3);
+        Waypoint.Id nearId = insertWaypoint("ab", 0.1);
+        Waypoint.Id farId = insertWaypoint("ac", 0.2);
 
-        SearchQuery query = new SearchQuery("a", HERE, -1, NOW);
+        SearchQuery query = new SearchQuery("a", HERE, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Distance order.
@@ -218,11 +222,11 @@ public class SearchEngineTest {
 
     public void testSearchTrackRecent() {
         // All results match text, but they're were recorded at different times.
-        long oldestId = insertTrack("aa", 3);
-        long recentId = insertTrack("ab", 1);
-        long oldId = insertTrack("ac", 2);
+        Track.Id oldestId = insertTrack("aa", 3);
+        Track.Id recentId = insertTrack("ab", 1);
+        Track.Id oldId = insertTrack("ac", 2);
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Reverse time order.
@@ -232,11 +236,11 @@ public class SearchEngineTest {
     @Test
     public void testSearchWaypointRecent() {
         // All results match text, but they're were recorded at different times.
-        long oldestId = insertWaypoint("aa", 2);
-        long recentId = insertWaypoint("ab", 0);
-        long oldId = insertWaypoint("ac", 1);
+        Waypoint.Id oldestId = insertWaypoint("aa", 2);
+        Waypoint.Id recentId = insertWaypoint("ab", 0);
+        Waypoint.Id oldId = insertWaypoint("ac", 1);
 
-        SearchQuery query = new SearchQuery("a", null, -1, NOW);
+        SearchQuery query = new SearchQuery("a", null, null, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Reverse time order.
@@ -246,8 +250,8 @@ public class SearchEngineTest {
     @Test
     public void testSearchCurrentTrack() {
         // All results match text, but one of them is the current track.
-        long currentId = insertTrack("ab", 1);
-        long otherId = insertTrack("aa", 1);
+        Track.Id currentId = insertTrack("ab", 1);
+        Track.Id otherId = insertTrack("aa", 1);
 
         SearchQuery query = new SearchQuery("a", null, currentId, NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -259,24 +263,29 @@ public class SearchEngineTest {
     @Test
     public void testSearchCurrentTrackWaypoint() {
         // All results match text, but one of them is in the current track.
-        long otherId = insertWaypoint("aa", 1, 456);
-        long currentId = insertWaypoint("ab", 1, 123);
+        Waypoint.Id otherId = insertWaypoint("aa", 1, new Track.Id(456));
+        Waypoint.Id currentId = insertWaypoint("ab", 1, new Track.Id(123));
 
-        SearchQuery query = new SearchQuery("a", null, 123, NOW);
+        SearchQuery query = new SearchQuery("a", null, new Track.Id(123), NOW);
         ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
 
         // Waypoint in current track should be promoted.
         assertWaypointResults(results, currentId, otherId);
     }
 
-    private void assertTrackResult(long trackId, ScoredResult result) {
+    private void assertTrackResult(Track.Id trackId, ScoredResult result) {
         Assert.assertNotNull("Not a track", result.track);
         Assert.assertNull("Ambiguous result", result.waypoint);
         Assert.assertEquals(trackId, result.track.getId());
     }
 
-    private void assertTrackResults(List<ScoredResult> results, long... trackIds) {
-        String errMsg = "Expected IDs=" + Arrays.toString(trackIds) + "; results=" + results;
+    private void assertTrackResults(List<ScoredResult> results, Track.Id... trackIds) {
+        long[] longTrackIds = new long[trackIds.length];
+        for (int i = 0; i < trackIds.length; i++) {
+            longTrackIds[i] = trackIds[i].getId();
+        }
+
+        String errMsg = "Expected IDs=" + Arrays.toString(longTrackIds) + "; results=" + results;
         Assert.assertEquals(results.size(), trackIds.length);
         for (int i = 0; i < results.size(); i++) {
             ScoredResult result = results.get(i);
@@ -286,14 +295,19 @@ public class SearchEngineTest {
         }
     }
 
-    private void assertWaypointResult(long waypointId, ScoredResult result) {
+    private void assertWaypointResult(Waypoint.Id waypointId, ScoredResult result) {
         Assert.assertNotNull("Not a waypoint", result.waypoint);
         Assert.assertNull("Ambiguous result", result.track);
         Assert.assertEquals(waypointId, result.waypoint.getId());
     }
 
-    private void assertWaypointResults(List<ScoredResult> results, long... waypointIds) {
-        String errMsg = "Expected IDs=" + Arrays.toString(waypointIds) + "; results=" + results;
+    private void assertWaypointResults(List<ScoredResult> results, Waypoint.Id... waypointIds) {
+        long[] longWaypointIds = new long[waypointIds.length];
+        for (int i = 0; i < waypointIds.length; i++) {
+            longWaypointIds[i] = waypointIds[i].getId();
+        }
+
+        String errMsg = "Expected IDs=" + Arrays.toString(longWaypointIds) + "; results=" + results;
         Assert.assertEquals(results.size(), waypointIds.length);
         for (int i = 0; i < results.size(); i++) {
             ScoredResult result = results.get(i);

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

@@ -20,10 +20,10 @@ public class TestDataUtil {
     /**
      * Create a track without any trackPoints.
      */
-    public static Track createTrack(long trackId) {
+    public static Track createTrack(Track.Id trackId) {
         Track track = new Track();
         track.setId(trackId);
-        track.setName("Test: " + trackId);
+        track.setName("Test: " + trackId.getId());
 
         return track;
     }
@@ -34,18 +34,18 @@ public class TestDataUtil {
      * @param trackId   the trackId of the track
      * @param numPoints the trackPoints number in the track
      */
-    public static Pair<Track, TrackPoint[]> createTrack(long trackId, int numPoints) {
+    public static Pair<Track, TrackPoint[]> createTrack(Track.Id trackId, int numPoints) {
         Track track = createTrack(trackId);
 
         TrackPoint[] trackPoints = new TrackPoint[numPoints];
         for (int i = 0; i < numPoints; i++) {
-            trackPoints[i] = (createTrackPoint(i));
+            trackPoints[i] = createTrackPoint(i);
         }
 
         return new Pair<>(track, trackPoints);
     }
 
-    public static Track createTrackAndInsert(ContentProviderUtils contentProviderUtils, long trackId, int numPoints) {
+    public static Track createTrackAndInsert(ContentProviderUtils contentProviderUtils, Track.Id trackId, int numPoints) {
         Pair<Track, TrackPoint[]> pair = createTrack(trackId, numPoints);
 
         insertTrackWithLocations(contentProviderUtils, pair.first, pair.second);
@@ -56,17 +56,22 @@ public class TestDataUtil {
     /**
      * Creates a location.
      *
-     * @param i the index to set the value of location.
-     * @return created location
+     * @param i the index for the TrackPoint.
      */
     public static TrackPoint createTrackPoint(int i) {
-        Location location = new Location("test");
-        location.setLatitude(INITIAL_LATITUDE + (double) i / 10000.0);
-        location.setLongitude(INITIAL_LONGITUDE - (double) i / 10000.0);
-        location.setAccuracy((float) i / 100.0f);
-        location.setAltitude(i * ALTITUDE_INTERVAL);
-        location.setTime(i + 1);
-        return new TrackPoint(location);
+        TrackPoint trackPoint = new TrackPoint();
+        trackPoint.setLatitude(INITIAL_LATITUDE + (double) i / 10000.0);
+        trackPoint.setLongitude(INITIAL_LONGITUDE - (double) i / 10000.0);
+        trackPoint.setAccuracy((float) i / 100.0f);
+        trackPoint.setAltitude(i * ALTITUDE_INTERVAL);
+        trackPoint.setTime(i + 1);
+        trackPoint.setSpeed(5f + (i / 10));
+
+        trackPoint.setHeartRate_bpm(100f + i);
+        trackPoint.setCyclingCadence_rpm(200f + i);
+        trackPoint.setCyclingCadence_rpm(300f + i);
+        trackPoint.setPower(400f + i);
+        return trackPoint;
     }
 
     /**
@@ -88,12 +93,11 @@ public class TestDataUtil {
      * @param location The location.
      * @return the Waypoint created.
      */
-    public static  Waypoint createWaypointWithPhoto(Context context, long trackId, Location location) throws IOException {
-        String photoUrl = "";
+    public static Waypoint createWaypointWithPhoto(Context context, Track.Id trackId, Location location) throws IOException {
         File dstFile = new File(FileUtils.getImageUrl(context, trackId));
         dstFile.createNewFile();
         Uri photoUri = FileUtils.getUriForFile(context, dstFile);
-        photoUrl = photoUri.toString();
+        String photoUrl = photoUri.toString();
 
         return new Waypoint("Waypoint name", "Waypoint description", "Waypoint category", "", trackId, 0.0, 0, location, photoUrl);
     }

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

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

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

@@ -37,6 +37,7 @@ import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.UUID;
 
 import de.dennisguse.opentracks.content.data.TestDataUtil;
 import de.dennisguse.opentracks.content.data.Track;
@@ -47,6 +48,7 @@ import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.FileUtils;
+import de.dennisguse.opentracks.util.UUIDUtils;
 
 import static org.mockito.Mockito.when;
 
@@ -81,39 +83,39 @@ public class CustomContentProviderUtilsTest {
 
     @Test
     public void testLocationIterator_noPoints() {
-        testIterator(1, 0, 1, false);
+        testIterator(new Track.Id(1), 0, 1, false);
     }
 
     @Test
     public void testLocationIterator_noBatchAscending() {
-        testIterator(1, 50, 100, false);
-        testIterator(2, 50, 50, false);
+        testIterator(new Track.Id(1), 50, 100, false);
+        testIterator(new Track.Id(2), 50, 50, false);
     }
 
     @Test
     public void testLocationIterator_noBatchDescending() {
-        testIterator(1, 50, 100, true);
-        testIterator(2, 50, 50, true);
+        testIterator(new Track.Id(1), 50, 100, true);
+        testIterator(new Track.Id(2), 50, 50, true);
     }
 
     @Test
     public void testLocationIterator_batchAscending() {
-        testIterator(1, 50, 11, false);
-        testIterator(2, 50, 25, false);
+        testIterator(new Track.Id(1), 50, 11, false);
+        testIterator(new Track.Id(2), 50, 25, false);
     }
 
     @Test
     public void testLocationIterator_batchDescending() {
-        testIterator(1, 50, 11, true);
-        testIterator(2, 50, 25, true);
+        testIterator(new Track.Id(1), 50, 11, true);
+        testIterator(new Track.Id(2), 50, 25, true);
     }
 
     @Test
     public void testLocationIterator_largeTrack() {
-        testIterator(1, 20000, 2000, false);
+        testIterator(new Track.Id(1), 20000, 2000, false);
     }
 
-    private void testIterator(long trackId, int numPoints, int batchSize, boolean descending) {
+    private void testIterator(Track.Id trackId, int numPoints, int batchSize, boolean descending) {
         long lastPointId = initializeTrack(trackId, numPoints);
         contentProviderUtils.setDefaultCursorBatchSize(batchSize);
         List<TrackPoint> locations = new ArrayList<>(numPoints);
@@ -130,10 +132,10 @@ public class CustomContentProviderUtilsTest {
         }
     }
 
-    private long initializeTrack(long id, int numPoints) {
+    private long initializeTrack(Track.Id id, int numPoints) {
         Track track = new Track();
         track.setId(id);
-        track.setName("Test: " + id);
+        track.setName("Test: " + id.getId());
         contentProviderUtils.insertTrack(track);
         track = contentProviderUtils.getTrack(id);
         Assert.assertNotNull(track);
@@ -171,22 +173,26 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testCreateTrack() {
-        int startColumnIndex = 1;
-        int columnIndex = startColumnIndex;
-        when(cursorMock.getColumnIndexOrThrow(TracksColumns._ID)).thenReturn(columnIndex++);
-        when(cursorMock.getColumnIndexOrThrow(TracksColumns.NAME)).thenReturn(columnIndex++);
-        columnIndex = startColumnIndex;
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
+
+        int columnIndex = 1;
         // Id
-        when(cursorMock.isNull(columnIndex++)).thenReturn(false);
+        when(cursorMock.getColumnIndexOrThrow(TracksColumns._ID)).thenReturn(columnIndex);
+        when(cursorMock.isNull(columnIndex)).thenReturn(false);
+        when(cursorMock.getLong(columnIndex)).thenReturn(trackId.getId());
+
+        //Uuid
+        columnIndex++;
+        when(cursorMock.getColumnIndexOrThrow(TracksColumns.UUID)).thenReturn(columnIndex);
+        when(cursorMock.isNull(columnIndex)).thenReturn(false);
+        when(cursorMock.getBlob(columnIndex)).thenReturn(UUIDUtils.toBytes(UUID.randomUUID()));
+
         // Name
-        when(cursorMock.isNull(columnIndex++)).thenReturn(false);
-        long trackId = System.currentTimeMillis();
-        columnIndex = startColumnIndex;
-        // Id
-        when(cursorMock.getLong(columnIndex++)).thenReturn(trackId);
-        // Name
-        String name = NAME_PREFIX + trackId;
-        when(cursorMock.getString(columnIndex++)).thenReturn(name);
+        columnIndex++;
+        String name = NAME_PREFIX + trackId.getId();
+        when(cursorMock.getColumnIndexOrThrow(TracksColumns.NAME)).thenReturn(columnIndex);
+        when(cursorMock.isNull(columnIndex)).thenReturn(false);
+        when(cursorMock.getString(columnIndex)).thenReturn(name);
 
         Track track = contentProviderUtils.createTrack(cursorMock);
         Assert.assertEquals(trackId, track.getId());
@@ -199,8 +205,8 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testDeleteAllTracks() {
         // Insert track, points and waypoint at first.
-        long trackId = System.currentTimeMillis();
-        Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         contentProviderUtils.insertWaypoint(waypoint);
@@ -229,7 +235,7 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testDeleteAllTracks_withWaypointAndPhoto() throws IOException {
         // Insert track, points and waypoint with photo at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
@@ -262,20 +268,23 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, long)}.
+     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, Track.Id)}.
      */
     @Test
     public void testDeleteTrack() {
         // Insert three tracks, points of two tracks and way point of one track.
+        long random = System.currentTimeMillis();
+        Track.Id trackId1 = new Track.Id(random);
+        Track.Id trackId2 = new Track.Id(random + 1);
+        Track.Id trackId3 = new Track.Id(random + 2);
 
-        long trackId = System.currentTimeMillis();
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 0);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId1, 0);
 
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 1, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);
 
-        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId + 1));
-        waypoint.setTrackId(trackId);
+        Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId2));
+        waypoint.setTrackId(trackId1);
         contentProviderUtils.insertWaypoint(waypoint);
 
         ContentResolver contentResolver = context.getContentResolver();
@@ -286,7 +295,7 @@ public class CustomContentProviderUtilsTest {
         Cursor waypointCursor = contentResolver.query(WaypointsColumns.CONTENT_URI, null, null, null, WaypointsColumns._ID);
         Assert.assertEquals(1, waypointCursor.getCount());
         // Delete one track.
-        contentProviderUtils.deleteTrack(context, trackId);
+        contentProviderUtils.deleteTrack(context, trackId1);
         // Check whether all data of a track has been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
         Assert.assertEquals(2, tracksCursor.getCount());
@@ -297,26 +306,30 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, long)}.
+     * Tests the method {@link ContentProviderUtils#deleteTrack(Context, Track.Id)}.
      */
     @Test
     public void testDeleteTrack_withWaypointPhoto() throws IOException {
         // Insert three tracks.
-        long trackId = System.currentTimeMillis();
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 1, 10);
-        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId + 2, 10);
+        long random = System.currentTimeMillis();
+        Track.Id trackId1 = new Track.Id(random);
+        Track.Id trackId2 = new Track.Id(random + 1);
+        Track.Id trackId3 = new Track.Id(random + 2);
+
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId1, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
+        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);
 
         // Insert a waypoint in tracks trackId and trackId + 1.
-        TrackPoint trackPoint1 = contentProviderUtils.getLastValidTrackPoint(trackId);
-        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint1.getLocation());
+        TrackPoint trackPoint1 = contentProviderUtils.getLastValidTrackPoint(trackId1);
+        Waypoint waypoint1 = TestDataUtil.createWaypointWithPhoto(context, trackId1, trackPoint1.getLocation());
         contentProviderUtils.insertWaypoint(waypoint1);
-        File dir1 = FileUtils.getPhotoDir(context, trackId);
+        File dir1 = FileUtils.getPhotoDir(context, trackId1);
 
-        TrackPoint trackPoint2 = contentProviderUtils.getLastValidTrackPoint(trackId + 1);
-        Waypoint waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId + 1, trackPoint2.getLocation());
+        TrackPoint trackPoint2 = contentProviderUtils.getLastValidTrackPoint(trackId2);
+        Waypoint waypoint2 = TestDataUtil.createWaypointWithPhoto(context, trackId2, trackPoint2.getLocation());
         contentProviderUtils.insertWaypoint(waypoint2);
-        File dir2 = FileUtils.getPhotoDir(context, trackId + 1);
+        File dir2 = FileUtils.getPhotoDir(context, trackId2);
 
         // Check.
         ContentResolver contentResolver = context.getContentResolver();
@@ -334,7 +347,7 @@ public class CustomContentProviderUtilsTest {
         Assert.assertEquals(1, dir2.list().length);
         Assert.assertTrue(dir2.exists());
         // Delete one track.
-        contentProviderUtils.deleteTrack(context, trackId);
+        contentProviderUtils.deleteTrack(context, trackId1);
         // Check whether all data of a track has been deleted.
         tracksCursor = contentResolver.query(TracksColumns.CONTENT_URI, null, null, null, TracksColumns._ID);
         Assert.assertEquals(2, tracksCursor.getCount());
@@ -347,17 +360,17 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getAllTracks()}
+     * Tests the method {@link ContentProviderUtils#getTracks()}
      */
     @Test
     public void testGetAllTracks() {
         // given
-        int initialTrackNumber = contentProviderUtils.getAllTracks().size();
-        long trackId = System.currentTimeMillis();
+        int initialTrackNumber = contentProviderUtils.getTracks().size();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
 
         // when
-        List<Track> allTracks = contentProviderUtils.getAllTracks();
+        List<Track> allTracks = contentProviderUtils.getTracks();
 
         // then
         Assert.assertEquals(initialTrackNumber + 1, allTracks.size());
@@ -369,28 +382,45 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testGetLastTrack() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
         Assert.assertEquals(trackId, contentProviderUtils.getLastTrack().getId());
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrack(long)}
+     * Tests the method {@link ContentProviderUtils#getTrack(Track.Id)}
      */
     @Test
-    public void testGetTrack() {
-        long trackId = System.currentTimeMillis();
+    public void testGetTrack_by_id() {
+        // given
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         contentProviderUtils.insertTrack(TestDataUtil.createTrack(trackId));
+
+        // when / then
         Assert.assertNotNull(contentProviderUtils.getTrack(trackId));
     }
 
+    /**
+     * Tests the method {@link ContentProviderUtils#getTrack(Track.Id)}
+     */
+    @Test
+    public void testGetTrack_by_uuid() {
+        // given
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
+        Track track = TestDataUtil.createTrack(trackId);
+        contentProviderUtils.insertTrack(track);
+
+        // when / then
+        Assert.assertNotNull(contentProviderUtils.getTrack(track.getUuid()));
+    }
+
     /**
      * Tests the method {@link ContentProviderUtils#updateTrack(Track)}
      */
     @Test
     public void testUpdateTrack() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrack(trackId);
         String nameOld = "name1";
         String nameNew = "name2";
@@ -409,7 +439,7 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testCreateContentValues_waypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
 
         // Bottom
@@ -435,10 +465,10 @@ public class CustomContentProviderUtilsTest {
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(contentResolverMock);
 
-        long waypointId = System.currentTimeMillis();
+        Waypoint.Id waypointId = new Waypoint.Id(System.currentTimeMillis());
         waypoint.setId(waypointId);
         ContentValues contentValues = contentProviderUtils.createContentValues(waypoint);
-        Assert.assertEquals(waypointId, contentValues.get(WaypointsColumns._ID));
+        Assert.assertEquals(waypointId.getId(), contentValues.get(WaypointsColumns._ID));
         Assert.assertEquals((int) (TestDataUtil.INITIAL_LONGITUDE * 1000000), contentValues.get(WaypointsColumns.LONGITUDE));
         Assert.assertEquals(TEST_DESC, contentValues.get(WaypointsColumns.DESCRIPTION));
     }
@@ -472,19 +502,19 @@ public class CustomContentProviderUtilsTest {
         when(cursorMock.getLong(columnIndex++)).thenReturn(trackId);
 
         Waypoint waypoint = contentProviderUtils.createWaypoint(cursorMock);
-        Assert.assertEquals(id, waypoint.getId());
+        Assert.assertEquals(id, waypoint.getId().getId());
         Assert.assertEquals(name, waypoint.getName());
-        Assert.assertEquals(trackId, waypoint.getTrackId());
+        Assert.assertEquals(trackId, waypoint.getTrackId().getId());
     }
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, long)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_onlyOneWayPoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -497,7 +527,7 @@ public class CustomContentProviderUtilsTest {
         Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
 
         // Delete
         contentProviderUtils.deleteWaypoint(context, waypoint1Id);
@@ -507,12 +537,12 @@ public class CustomContentProviderUtilsTest {
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#deleteWaypoint(Context, long)}
+     * {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)}
      * when there is only one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_onlyOneWayPointWithPhotoUrl() throws IOException {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -524,7 +554,7 @@ public class CustomContentProviderUtilsTest {
         Assert.assertEquals(contentProviderUtils.getWaypointCount(trackId), 1);
 
         // Get waypoint id that needs to delete.
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
 
         // Check waypoint has photo and it's in the external storage.
         Assert.assertTrue(waypoint1.hasPhoto());
@@ -542,11 +572,11 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#deleteWaypoint(Context, long)} when there is more than one waypoint in the track.
+     * Tests the method {@link ContentProviderUtils#deleteWaypoint(Context, Waypoint.Id)} when there is more than one waypoint in the track.
      */
     @Test
     public void testDeleteWaypoint_hasNextWayPoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
 //        Track track = TestDataUtil.createTrackAndInsert(trackId, 10);
@@ -569,12 +599,12 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint1.setDescription(MOCK_DESC);
         waypoint1.setTrackId(trackId);
-        long waypoint1Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1));
+        Waypoint.Id waypoint1Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint1)));
 
         Waypoint waypoint2 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint2.setDescription(MOCK_DESC);
         waypoint2.setTrackId(trackId);
-        long waypoint2Id = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint2));
+        Waypoint.Id waypoint2Id = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint2)));
 
         // Delete
         Assert.assertNotNull(contentProviderUtils.getWaypoint(waypoint1Id));
@@ -585,11 +615,11 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(long)}.
+     * Tests the method {@link ContentProviderUtils#getNextWaypointNumber(Track.Id)}.
      */
     @Test
     public void testGetNextWaypointNumber() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint1 = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
@@ -610,17 +640,17 @@ public class CustomContentProviderUtilsTest {
 
     /**
      * Tests the method {@link ContentProviderUtils#insertWaypoint(Waypoint)} and
-     * {@link ContentProviderUtils#getWaypoint(long)}.
+     * {@link ContentProviderUtils#getWaypoint(Waypoint.Id)}.
      */
     @Test
     public void testInsertAndGetWaypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
         Assert.assertEquals(TEST_DESC, contentProviderUtils.getWaypoint(waypointId).getDescription());
     }
@@ -630,14 +660,14 @@ public class CustomContentProviderUtilsTest {
      */
     @Test
     public void testUpdateWaypoint() {
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
         Waypoint waypoint = new Waypoint(contentProviderUtils.getLastValidTrackPoint(trackId));
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
         // Update
         waypoint = contentProviderUtils.getWaypoint(waypointId);
@@ -654,7 +684,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_withPhoto() throws IOException {
         // tests after update waypoint with photo the photo remains in the storage.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -662,9 +692,9 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
         Assert.assertTrue(dir.exists());
         Assert.assertTrue(dir.isDirectory());
         Assert.assertEquals(1, dir.list().length);
@@ -690,7 +720,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_delPhotoAndDir() throws IOException {
         // tests after update waypoint if user deletes the photo then file photo is deleted from the storage. Also empty directory is deleted.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert at first.
@@ -698,9 +728,9 @@ public class CustomContentProviderUtilsTest {
         Waypoint waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         waypoint.setDescription(TEST_DESC);
         waypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
         Assert.assertTrue(dir.exists());
         Assert.assertTrue(dir.isDirectory());
         Assert.assertEquals(1, dir.list().length);
@@ -725,7 +755,7 @@ public class CustomContentProviderUtilsTest {
     public void testUpdateWaypoint_delPhotoNotDir() throws IOException {
         // tests after update waypoint if user deletes the photo then file photo is deleted from the storage. Directory remains if there are more photos from other waypoints.
 
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         // Insert two waypoints with photos.
@@ -736,10 +766,10 @@ public class CustomContentProviderUtilsTest {
         Waypoint otherWaypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
         otherWaypoint.setDescription(TEST_DESC);
         otherWaypoint.setTrackId(trackId);
-        long waypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint));
-        long otherWaypointId = ContentUris.parseId(contentProviderUtils.insertWaypoint(otherWaypoint));
+        Waypoint.Id waypointId = new Waypoint.Id(ContentUris.parseId(contentProviderUtils.insertWaypoint(waypoint)));
+        contentProviderUtils.insertWaypoint(otherWaypoint);
 
-        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId);
+        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
         Assert.assertTrue(dir.exists());
         Assert.assertTrue(dir.isDirectory());
         Assert.assertEquals(2, dir.list().length);
@@ -757,12 +787,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#bulkInsertTrackPoint(TrackPoint[], long)}.
+     * Tests the method {@link ContentProviderUtils#bulkInsertTrackPoint(TrackPoint[], Track.Id)}.
      */
     @Test
     public void testBulkInsertTrackPoint() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         TestDataUtil.insertTrackWithLocations(contentProviderUtils, track.first, track.second);
 
@@ -818,12 +848,12 @@ public class CustomContentProviderUtilsTest {
 
     /**
      * Tests the method
-     * {@link ContentProviderUtils#insertTrackPoint(TrackPoint, long)}.
+     * {@link ContentProviderUtils#insertTrackPoint(TrackPoint, Track.Id)}.
      */
     @Test
     public void testInsertTrackPoint() {
         // Insert track, point at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         contentProviderUtils.insertTrackPoint(TestDataUtil.createTrackPoint(22), trackId);
@@ -833,7 +863,7 @@ public class CustomContentProviderUtilsTest {
     @Test
     public void testInsertAndLoadTrackPoint() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint trackPoint = TestDataUtil.createTrackPoint(5);
@@ -853,12 +883,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getLastValidTrackPoint(long)}.
+     * Tests the method {@link ContentProviderUtils#getLastValidTrackPoint(Track.Id)}.
      */
     @Test
     public void testGetLastValidTrackPoint() {
         // Insert track, points at first.
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Track track = TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);
 
         TrackPoint lastTrackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
@@ -866,12 +896,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(Track.Id, long, int, boolean)} in descending.
      */
     @Test
     public void testGetTrackPointCursor_desc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -888,12 +918,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(long, long, int, boolean)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointCursor(Track.Id, long, int, boolean)} in ascending.
      */
     @Test
     public void testGetTrackPointCursor_asc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -910,12 +940,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean)} in descending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(Track.Id, long, boolean)} in descending.
      */
     @Test
     public void testGetTrackPointLocationIterator_desc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -939,12 +969,12 @@ public class CustomContentProviderUtilsTest {
     }
 
     /**
-     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(long, long, boolean)} in ascending.
+     * Tests the method {@link ContentProviderUtils#getTrackPointLocationIterator(Track.Id, long, boolean)} in ascending.
      */
     @Test
     public void testGetTrackPointLocationIterator_asc() {
         // given
-        long trackId = System.currentTimeMillis();
+        Track.Id trackId = new Track.Id(System.currentTimeMillis());
         Pair<Track, TrackPoint[]> track = TestDataUtil.createTrack(trackId, 10);
         contentProviderUtils.insertTrack(track.first);
 
@@ -972,7 +1002,7 @@ public class CustomContentProviderUtilsTest {
     /**
      * Checks the value of a location.
      *
-     * @param i        the index of this location which created in the method {@link TestDataUtil#createTrack(long, int)}
+     * @param i        the index of this location which created in the method {@link TestDataUtil#createTrack(Track.Id, int)}
      * @param location the location to be checked
      */
     private void checkLocation(int i, Location location) {
@@ -982,12 +1012,10 @@ public class CustomContentProviderUtilsTest {
         Assert.assertEquals(i * TestDataUtil.ALTITUDE_INTERVAL, location.getAltitude(), 0.01);
     }
 
-
     @Test
     public void testFormatIdListForUri() {
-        Assert.assertEquals("", ContentProviderUtils.formatIdListForUri(new long[]{}));
-        Assert.assertEquals("12", ContentProviderUtils.formatIdListForUri(new long[]{12}));
-        Assert.assertEquals("42,43,44", ContentProviderUtils.formatIdListForUri(new long[]{42, 43, 44}));
+        Assert.assertEquals("", ContentProviderUtils.formatIdListForUri());
+        Assert.assertEquals("12", ContentProviderUtils.formatIdListForUri(new Track.Id(12)));
+        Assert.assertEquals("42,43,44", ContentProviderUtils.formatIdListForUri(new Track.Id(42), new Track.Id(43), new Track.Id(44)));
     }
-
 }

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

@@ -2,13 +2,15 @@ package de.dennisguse.opentracks.content.provider;
 
 import android.content.Context;
 import android.database.Cursor;
+import android.database.sqlite.SQLiteConstraintException;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 
+import androidx.annotation.VisibleForTesting;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 
-import org.junit.Assert;
+import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -20,6 +22,10 @@ import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
+
 @RunWith(AndroidJUnit4.class)
 public class CustomSQLiteOpenHelperTest {
 
@@ -36,7 +42,8 @@ public class CustomSQLiteOpenHelperTest {
      *
      * @return Map(TableName, SQL)
      */
-    private static Map<String, String> getTableSQL(SQLiteDatabase db) {
+    @VisibleForTesting
+    public static Map<String, String> getTableSQL(SQLiteDatabase db) {
         HashMap<String, String> tableSQL = new HashMap<>();
         try (Cursor cursor = db.query("sqlite_master", new String[]{"name", "SQL"}, "name IN ('" + TracksColumns.TABLE_NAME + "', '" + TrackPointsColumns.TABLE_NAME + "', '" + WaypointsColumns.TABLE_NAME + "')", null, null, null, "name")) {
             if (cursor != null) {
@@ -53,6 +60,7 @@ public class CustomSQLiteOpenHelperTest {
      *
      * @return Map(tableName, SQL)
      */
+    @VisibleForTesting
     public static Map<String, String> getIndexSQL(SQLiteDatabase db) {
         HashMap<String, String> indexSQL = new HashMap<>();
         try (Cursor cursor = db.rawQuery("SELECT tbl_name, SQL FROM sqlite_master WHERE type = 'index'", null)) {
@@ -85,6 +93,7 @@ public class CustomSQLiteOpenHelperTest {
     }
 
     @Before
+    @After
     public void setUp() {
         context.deleteDatabase(DATABASE_NAME);
     }
@@ -92,36 +101,21 @@ public class CustomSQLiteOpenHelperTest {
     @Test
     public void onCreate() {
         try (SQLiteDatabase db = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getWritableDatabase()) {
-            Assert.assertTrue(hasSqlCreate(db, TracksColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, TracksColumns.CREATE_TABLE));
 
-            Assert.assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE));
-            Assert.assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE_INDEX));
+            assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, TrackPointsColumns.CREATE_TABLE_INDEX));
 
-            Assert.assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE));
-            Assert.assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE_INDEX));
+            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE));
+            assertTrue(hasSqlCreate(db, WaypointsColumns.CREATE_TABLE_INDEX));
+        } catch (Exception e) {
+            fail();
         }
     }
 
     @Test
     public void onUpgrade_FromVersion23() {
-        // Manually create database schema with version 23 (base version)
-        {
-            SQLiteDatabase dbBase = new SQLiteOpenHelper(context, DATABASE_NAME, null, 23) {
-                @Override
-                public void onCreate(SQLiteDatabase db) {
-                }
-
-                @Override
-                public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-                }
-            }.getWritableDatabase();
-
-            dbBase.execSQL(TRACKS_CREATE_TABLE_V23);
-            dbBase.execSQL(TRACKPOINTS_CREATE_TABLE_V23);
-            dbBase.execSQL(WAYPOINTS_CREATE_TABLE_V23);
-
-            dbBase.close();
-        }
+        createVersion23();
 
         // Open database with SQL upgrade
         Map<String, String> tableByUpgrade;
@@ -130,10 +124,9 @@ public class CustomSQLiteOpenHelperTest {
             tableByUpgrade = getTableSQL(dbUpgraded);
             indicesByUpgrade = getIndexSQL(dbUpgraded);
         }
-
-        // Open database via
         context.deleteDatabase(DATABASE_NAME);
 
+        // Open database via creation script
         Map<String, String> tablesByCreate;
         Map<String, String> indicesByCreate;
         try (SQLiteDatabase dbCreated = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getReadableDatabase()) {
@@ -142,17 +135,18 @@ public class CustomSQLiteOpenHelperTest {
         }
 
         // then - verify table structure
-        Assert.assertEquals(3, tableByUpgrade.size());
-        Assert.assertEquals(tableByUpgrade.size(), tablesByCreate.size());
+        assertEquals(3, tableByUpgrade.size());
+        assertEquals(tableByUpgrade.size(), tablesByCreate.size());
 
-        Assert.assertEquals(tablesByCreate.get(TracksColumns.TABLE_NAME), tableByUpgrade.get(TracksColumns.TABLE_NAME));
-        Assert.assertEquals(tablesByCreate.get(TrackPointsColumns.TABLE_NAME), tableByUpgrade.get(TrackPointsColumns.TABLE_NAME));
-        Assert.assertEquals(tablesByCreate.get(WaypointsColumns.TABLE_NAME), tableByUpgrade.get(WaypointsColumns.TABLE_NAME));
+        assertEquals(tablesByCreate.get(TracksColumns.TABLE_NAME), tableByUpgrade.get(TracksColumns.TABLE_NAME));
+        assertEquals(tablesByCreate.get(TrackPointsColumns.TABLE_NAME), tableByUpgrade.get(TrackPointsColumns.TABLE_NAME));
+        assertEquals(tablesByCreate.get(WaypointsColumns.TABLE_NAME), tableByUpgrade.get(WaypointsColumns.TABLE_NAME));
 
         // then - verify custom indices
-        Assert.assertEquals(2, indicesByCreate.size());
-        Assert.assertEquals(indicesByUpgrade.get(TrackPointsColumns.TABLE_NAME), indicesByCreate.get(TrackPointsColumns.TABLE_NAME));
-        Assert.assertEquals(indicesByUpgrade.get(WaypointsColumns.TABLE_NAME), indicesByCreate.get(WaypointsColumns.TABLE_NAME));
+        assertEquals(3, indicesByCreate.size());
+        assertEquals(indicesByUpgrade.get(TracksColumns.TABLE_NAME), indicesByCreate.get(TracksColumns.TABLE_NAME));
+        assertEquals(indicesByUpgrade.get(TrackPointsColumns.TABLE_NAME), indicesByCreate.get(TrackPointsColumns.TABLE_NAME));
+        assertEquals(indicesByUpgrade.get(WaypointsColumns.TABLE_NAME), indicesByCreate.get(WaypointsColumns.TABLE_NAME));
     }
 
     @Test
@@ -169,11 +163,41 @@ public class CustomSQLiteOpenHelperTest {
         }
 
         // then - verify table structure
-        Assert.assertEquals(TRACKS_CREATE_TABLE_V23, tablesByDowngrade.get("tracks"));
-        Assert.assertEquals(TRACKPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("trackpoints"));
-        Assert.assertEquals(WAYPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("waypoints"));
+        assertEquals(TRACKS_CREATE_TABLE_V23, tablesByDowngrade.get("tracks"));
+        assertEquals(TRACKPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("trackpoints"));
+        assertEquals(WAYPOINTS_CREATE_TABLE_V23, tablesByDowngrade.get("waypoints"));
 
         // then - verify custom indices
-        Assert.assertEquals(0, indicesByDowngrade.size());
+        assertEquals(0, indicesByDowngrade.size());
+    }
+
+    @Test
+    public void track_uuid_unique() {
+        try (SQLiteDatabase db = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getWritableDatabase()) {
+            db.execSQL("INSERT INTO tracks (uuid) VALUES (0x00)");
+            db.execSQL("INSERT INTO tracks (uuid) VALUES (0x00)");
+            fail("unique constraint not enforced");
+        } catch (SQLiteConstraintException e) {
+            assertTrue(e.getMessage().contains("UNIQUE constraint failed: tracks.uuid"));
+        }
+    }
+
+    private void createVersion23() {
+        // Manually create database schema with version 23 (base version)
+        SQLiteDatabase dbBase = new SQLiteOpenHelper(context, DATABASE_NAME, null, 23) {
+            @Override
+            public void onCreate(SQLiteDatabase db) {
+            }
+
+            @Override
+            public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+            }
+        }.getWritableDatabase();
+
+        dbBase.execSQL(TRACKS_CREATE_TABLE_V23);
+        dbBase.execSQL(TRACKPOINTS_CREATE_TABLE_V23);
+        dbBase.execSQL(WAYPOINTS_CREATE_TABLE_V23);
+
+        dbBase.close();
     }
 }

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

@@ -6,6 +6,10 @@ import android.util.Pair;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.HashSet;
+import java.util.Set;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 
 public class ShareContentProviderTest {
@@ -14,20 +18,25 @@ public class ShareContentProviderTest {
     public void testCreateandParseURI_invalid() {
         Uri uri = Uri.parse("content://de.dennisguse.opentracks.debug.content/tracks/1");
 
-        Assert.assertArrayEquals(new long[]{}, ShareContentProvider.parseURI(uri));
+        Assert.assertEquals(0, ShareContentProvider.parseURI(uri).size());
     }
 
     @Test
     public void testCreateandParseURI_valid() {
-        long[] trackIds = {1, 3, 5};
+        Set<Track.Id> trackIds = new HashSet<>();
+        trackIds.add(new Track.Id(1));
+        trackIds.add(new Track.Id(3));
+        trackIds.add(new Track.Id(5));
+
         Pair<Uri, String> shareURIandMIME = ShareContentProvider.createURI(trackIds, "TrackName", TrackFileFormat.KML_ONLY_TRACK);
 
-        Assert.assertArrayEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
+        Assert.assertEquals(trackIds, ShareContentProvider.parseURI(shareURIandMIME.first));
     }
 
     @Test
     public void testCreateURIescapeFilename() {
-        long[] trackIds = {1};
+        Set<Track.Id> trackIds = new HashSet<>();
+        trackIds.add(new Track.Id(1));
         Pair<Uri, String> shareURIandMIME = ShareContentProvider.createURI(trackIds, "../../&1=1", TrackFileFormat.KML_ONLY_TRACK);
 
         Assert.assertEquals(Uri.parse("content://de.dennisguse.opentracks.debug.content/tracks/kml_only_track/1/..%2F..%2F%261%3D1.kml"), shareURIandMIME.first);

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

@@ -253,7 +253,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint1.getTime() + 222);
         trackPoint2.setSpeed(130);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(130.0 * UnitConversions.MS_TO_KMH, point.getSpeed(), 0.01);
+        Assert.assertEquals(130.0 * UnitConversions.MPS_TO_KMH, point.getSpeed(), 0.01);
     }
 
     /**
@@ -278,7 +278,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint2.getTime() + 222);
         trackPoint2.setSpeed(102);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(102.0 * UnitConversions.MS_TO_KMH * UnitConversions.KM_TO_MI, point.getSpeed(), 0.01);
+        Assert.assertEquals(102.0 * UnitConversions.MPS_TO_KMH * UnitConversions.KM_TO_MI, point.getSpeed(), 0.01);
     }
 
     /**
@@ -303,7 +303,7 @@ public class ChartFragmentTest {
         trackPoint2.setTime(trackPoint2.getTime() + 222);
         trackPoint2.setSpeed(102);
         point = chartFragment.createPendingPoint(trackPoint2);
-        Assert.assertEquals(HOURS_PER_UNIT / (102.0 * UnitConversions.MS_TO_KMH), point.getPace(), 0.01);
+        Assert.assertEquals(HOURS_PER_UNIT / (102.0 * UnitConversions.MPS_TO_KMH), point.getPace(), 0.01);
     }
 
     /**

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

@@ -29,13 +29,13 @@ import org.mockito.ArgumentCaptor;
 import org.mockito.Mock;
 
 import java.text.SimpleDateFormat;
+import java.time.ZoneOffset;
 import java.util.Locale;
 import java.util.SimpleTimeZone;
+import java.util.TimeZone;
 
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
-import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 
@@ -64,11 +64,11 @@ public abstract class AbstractTestFileTrackImporter {
 
     static final SimpleDateFormat DATE_FORMAT_0 = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'", Locale.US);
     static final SimpleDateFormat DATE_FORMAT_1 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS", Locale.US);
-    static final long TRACK_ID_0 = 1;
+
     static final long TRACK_POINT_ID_0 = 1;
     static final long TRACK_POINT_ID_1 = 2;
     static final long TRACK_POINT_ID_3 = 4;
-    static final Uri TRACK_ID_0_URI = ContentUris.appendId(TracksColumns.CONTENT_URI.buildUpon(), TRACK_ID_0).build();
+
     private static final long WAYPOINT_ID_0 = 1;
     private static final Uri WAYPOINT_ID_O_URI = ContentUris.appendId(WaypointsColumns.CONTENT_URI.buildUpon(), WAYPOINT_ID_0).build();
 
@@ -76,7 +76,7 @@ public abstract class AbstractTestFileTrackImporter {
 
     static {
         // We can't omit the timezones in the test, otherwise it'll use the local timezone and fail depending on where the test runner is.
-        SimpleTimeZone utc = new SimpleTimeZone(0, "UTC");
+        TimeZone utc = SimpleTimeZone.getTimeZone(ZoneOffset.UTC);
         DATE_FORMAT_0.setTimeZone(utc);
         DATE_FORMAT_1.setTimeZone(utc);
     }
@@ -96,11 +96,11 @@ public abstract class AbstractTestFileTrackImporter {
     /**
      * Expects the first track point to be added.
      *
-     * @param trackPoint     the trackPoint
+     * @param trackPoint   the trackPoint
      * @param trackId      the track id
      * @param trackPointId the track point id
      */
-    protected void expectFirstTrackPoint(TrackPoint trackPoint, long trackId, long trackPointId) {
+    protected void expectFirstTrackPoint(TrackPoint trackPoint, Track.Id trackId, long trackPointId) {
         when(contentProviderUtils.bulkInsertTrackPoint(trackPoint != null ? (TrackPoint[]) any() : (TrackPoint[]) any(), eq(trackId))).thenReturn(1);
     }
 
@@ -111,10 +111,10 @@ public abstract class AbstractTestFileTrackImporter {
      * @param lastTrack   true if it is the last track in the gpx
      * @param trackId     the track id
      */
-    protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, long trackId) {
+    protected void expectTrackUpdate(ArgumentCaptor<Track> trackCaptor, boolean lastTrack, Track.Id trackId) {
         contentProviderUtils.updateTrack(trackCaptor.capture());
 
-        when(contentProviderUtils.insertWaypoint((Waypoint) any())).thenReturn(WAYPOINT_ID_O_URI);
+        when(contentProviderUtils.insertWaypoint(any())).thenReturn(WAYPOINT_ID_O_URI);
         if (lastTrack) {
             // Return null to not add waypoints
             when(contentProviderUtils.getTrack(trackId)).thenReturn(null);

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

@@ -17,8 +17,10 @@ import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.InputStream;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
+import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.TestDataUtil;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
@@ -27,9 +29,11 @@ import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
 import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.util.PreferencesUtils;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 /**
  * Export a track to {@link TrackFileFormat} and verify that the import is identical.
@@ -48,9 +52,12 @@ public class ExportImportTest {
     private static final String TRACK_ICON = "the track icon";
     private static final String TRACK_CATEGORY = "the category";
     private static final String TRACK_DESCRIPTION = "the description";
+
     private final List<Waypoint> waypoints = new ArrayList<>();
-    private long importTrackId;
-    private final long trackId = System.currentTimeMillis();
+    private final List<TrackPoint> trackPoints = new ArrayList<>();
+
+    private Track.Id importTrackId;
+    private final Track.Id trackId = new Track.Id(System.currentTimeMillis());
 
     @Before
     public void setUp() {
@@ -61,6 +68,9 @@ public class ExportImportTest {
         contentProviderUtils.insertTrack(track.first);
         contentProviderUtils.bulkInsertTrackPoint(track.second, track.first.getId());
 
+        trackPoints.clear();
+        trackPoints.addAll(Arrays.asList(track.second));
+
         for (int i = 0; i < 3; i++) {
             Waypoint waypoint = new Waypoint(track.second[i].getLocation());
             waypoint.setName("the waypoint " + i);
@@ -96,26 +106,59 @@ public class ExportImportTest {
         // given
         Track track = contentProviderUtils.getTrack(trackId);
 
-        TrackFileFormat trackFileFormat = TrackFileFormat.KML_WITH_TRACKDETAIL;
-        TrackExporter trackExporter = trackFileFormat.newTrackExporter(context, new Track[]{track});
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL.newTrackExporter(context);
 
         // when
         // 1. export
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        trackExporter.writeTrack(context, outputStream);
-
-        System.out.println(outputStream.toString());
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
         InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
-        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context, -1L);
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
+        importTrackId = trackImporter.importFile(inputStream);
+
+        // then
+        // 1. track
+        Track importedTrack = contentProviderUtils.getTrack(importTrackId);
+        assertNotNull(importedTrack);
+        assertEquals(track.getCategory(), importedTrack.getCategory());
+        assertEquals(track.getDescription(), importedTrack.getDescription());
+        assertEquals(track.getName(), importedTrack.getName());
+        assertEquals(track.getIcon(), importedTrack.getIcon());
+        assertEquals(track.getUuid(), importedTrack.getUuid());
+
+        // 2. waypoints
+        assertWaypoints();
+
+        // 3. trackpoints
+        assertTrackpoints(false, false, false);
+    }
+
+    @LargeTest
+    @Test
+    public void kml_with_trackdetail_and_sensordata() {
+        // given
+        Track track = contentProviderUtils.getTrack(trackId);
+
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.newTrackExporter(context);
+
+        // when
+        // 1. export
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
+
+        // 2. import
+        InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
         importTrackId = trackImporter.importFile(inputStream);
 
         // then
         // 1. track
         Track importedTrack = contentProviderUtils.getTrack(importTrackId);
         assertNotNull(importedTrack);
-        //TODO assertEquals(track.getTrackPoints(), importedTrack.getTrackPoints());
         assertEquals(track.getCategory(), importedTrack.getCategory());
         assertEquals(track.getDescription(), importedTrack.getDescription());
         assertEquals(track.getName(), importedTrack.getName());
@@ -124,14 +167,32 @@ public class ExportImportTest {
         // 2. waypoints
         assertWaypoints();
 
-        //TODO Check absolute time of trackpoints
+        // 3. trackpoints
+        assertTrackpoints(true, true, true);
     }
 
     @LargeTest
     @Test
-    public void kml_with_trackdetail_and_sensordata() {
-        // TODO
-        Log.e(TAG, "Test not implemented.");
+    public void kml_with_trackdetail_and_sensordata_duplicate_trackUUID() {
+        // given
+        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
+        Track track = contentProviderUtils.getTrack(trackId);
+
+        TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.newTrackExporter(context);
+
+        // when
+        // 1. export
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        trackExporter.writeTrack(track, outputStream);
+
+        // 2. import
+        InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+        AbstractFileTrackImporter trackImporter = new KmlFileTrackImporter(context);
+        importTrackId = trackImporter.importFile(inputStream);
+
+        // then
+        Track importedTrack = contentProviderUtils.getTrack(importTrackId);
+        assertNull(importedTrack);
     }
 
     @LargeTest
@@ -168,13 +229,13 @@ public class ExportImportTest {
         // given
         Track track = contentProviderUtils.getTrack(trackId);
 
-        TrackFileFormat trackFileFormat = TrackFileFormat.GPX;
-        TrackExporter trackExporter = trackFileFormat.newTrackExporter(context, new Track[]{track});
+        TrackExporter trackExporter = TrackFileFormat.GPX.newTrackExporter(context);
 
         // when
         // 1. export
         ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
-        trackExporter.writeTrack(context, outputStream);
+        trackExporter.writeTrack(track, outputStream);
+        contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
         InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
@@ -185,7 +246,6 @@ public class ExportImportTest {
         // 1. track
         Track trackImported = contentProviderUtils.getTrack(importTrackId);
         assertNotNull(trackImported);
-        //TODO assertEquals(track.getTrackPoints(), trackImported.getTrackPoints());
         assertEquals(track.getCategory(), trackImported.getCategory());
         assertEquals(track.getDescription(), trackImported.getDescription());
         assertEquals(track.getName(), trackImported.getName());
@@ -196,7 +256,33 @@ public class ExportImportTest {
         // 2. waypoints
         assertWaypoints();
 
-        //TODO Check absolute time of trackpoints
+        // 3. trackpoints
+        assertTrackpoints(false, true, true);
+    }
+
+    @LargeTest
+    @Test
+    public void gpx_duplicate_trackUUID() {
+        // given
+        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
+        Track track = contentProviderUtils.getTrack(trackId);
+
+        TrackExporter trackExporter = TrackFileFormat.GPX.newTrackExporter(context);
+
+        // when
+        // 1. export
+        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        trackExporter.writeTrack(track, outputStream);
+
+        // 2. import
+        InputStream inputStream = new ByteArrayInputStream(outputStream.toByteArray());
+        AbstractFileTrackImporter trackImporter = new GpxFileTrackImporter(context, contentProviderUtils);
+        importTrackId = trackImporter.importFile(inputStream);
+
+        // then
+        // 1. track
+        Track trackImported = contentProviderUtils.getTrack(importTrackId);
+        assertNull(trackImported);
     }
 
     private void assertWaypoints() {
@@ -217,4 +303,33 @@ public class ExportImportTest {
             assertEquals(waypoint.getLocation().getAltitude(), importedWaypoint.getLocation().getAltitude(), 0.001);
         }
     }
+
+    private void assertTrackpoints(boolean verifyPower, boolean verifyHeartrate, boolean verifyCadence) {
+        List<TrackPoint> importedTrackPoints = contentProviderUtils.getTrackPoints(importTrackId);
+        assertEquals(trackPoints.size(), importedTrackPoints.size());
+
+        for (int i = 0; i < trackPoints.size(); i++) {
+            TrackPoint trackPoint = trackPoints.get(i);
+            TrackPoint importedTrackPoint = importedTrackPoints.get(i);
+
+            assertEquals(trackPoint.getTime(), importedTrackPoint.getTime(), 0.01);
+
+            // TODO Not exported for GPX/KML
+            //   assertEquals(trackPoint.getAccuracy(), importedTrackPoint.getAccuracy(), 0.01);
+
+            assertEquals(trackPoint.getLatitude(), importedTrackPoint.getLatitude(), 0.001);
+            assertEquals(trackPoint.getLongitude(), importedTrackPoint.getLongitude(), 0.001);
+            assertEquals(trackPoint.getAltitude(), importedTrackPoint.getAltitude(), 0.001);
+            assertEquals(trackPoint.getSpeed(), importedTrackPoint.getSpeed(), 0.001);
+            if (verifyHeartrate) {
+                assertEquals(trackPoint.getHeartRate_bpm(), importedTrackPoint.getHeartRate_bpm(), 0.01);
+            }
+            if (verifyCadence) {
+                assertEquals(trackPoint.getCyclingCadence_rpm(), importedTrackPoint.getCyclingCadence_rpm(), 0.01);
+            }
+            if (verifyPower) {
+                assertEquals(trackPoint.getPower(), importedTrackPoint.getPower(), 0.01);
+            }
+        }
+    }
 }

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

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

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

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

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

@@ -21,6 +21,8 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.junit.runners.JUnit4;
 
+import de.dennisguse.opentracks.services.handlers.AdaptiveLocationListenerPolicy;
+
 /**
  * Tests the {@link AdaptiveLocationListenerPolicy}.
  *

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

@@ -21,6 +21,7 @@ import android.content.Intent;
 import android.content.SharedPreferences;
 import android.location.Location;
 import android.os.IBinder;
+import android.os.Looper;
 
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
@@ -33,6 +34,7 @@ import androidx.test.rule.ServiceTestRule;
 import org.junit.After;
 import org.junit.Assert;
 import org.junit.Before;
+import org.junit.BeforeClass;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -69,10 +71,17 @@ public class TrackRecordingServiceTest {
     @Rule
     public GrantPermissionRule mRuntimePermissionRule = GrantPermissionRule.grant(android.Manifest.permission.ACCESS_FINE_LOCATION);
 
+    @BeforeClass
+    public static void preSetUp() {
+        // Prepare looper for Android's message queue
+        if (Looper.myLooper() == null) Looper.prepare();
+    }
+
+
     private final Context context = ApplicationProvider.getApplicationContext();
     private ContentProviderUtils contentProviderUtils;
 
-    private final long trackId = Math.abs(new Random().nextLong());
+    private final Track.Id trackId = new Track.Id(Math.abs(new Random().nextLong()));
 
     static Intent createStartIntent(Context context) {
         return new Intent(context, TrackRecordingService.class);
@@ -125,7 +134,7 @@ public class TrackRecordingServiceTest {
     @Test
     public void testRecording_noTracks() throws Exception {
         // given
-        List<Track> tracks = contentProviderUtils.getAllTracks();
+        List<Track> tracks = contentProviderUtils.getTracks();
         Assert.assertTrue(tracks.isEmpty());
 
         // when
@@ -136,7 +145,7 @@ public class TrackRecordingServiceTest {
         // then
         // Test if we start in no-recording mode by default.
         Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(-1L, service.getRecordingTrackId());
+        Assert.assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -150,7 +159,7 @@ public class TrackRecordingServiceTest {
 
         // then
         Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        Assert.assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -172,7 +181,7 @@ public class TrackRecordingServiceTest {
         // given
         createDummyTrack(trackId, -1L, true);
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
-        insertLocation(service);
+        newTrackPoint(service);
 
         // when
         service.pauseCurrentTrack();
@@ -182,7 +191,7 @@ public class TrackRecordingServiceTest {
 
         //when
         service.resumeTrack(trackId);
-        insertLocation(service);
+        newTrackPoint(service);
 
         // then
         Assert.assertTrue(service.isRecording());
@@ -201,14 +210,14 @@ public class TrackRecordingServiceTest {
         // given
         createDummyTrack(trackId, -1L, true);
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
-        insertLocation(service);
+        newTrackPoint(service);
         service.endCurrentTrack();
 
         Assert.assertEquals(1, contentProviderUtils.getTrackPoints(trackId).size());
 
         // when
         service.resumeTrack(trackId);
-        insertLocation(service);
+        newTrackPoint(service);
 
         // then
         Assert.assertTrue(service.isRecording());
@@ -234,7 +243,7 @@ public class TrackRecordingServiceTest {
 
         // then
         Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        Assert.assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -245,13 +254,13 @@ public class TrackRecordingServiceTest {
         service.startNewTrack();
         Assert.assertTrue(service.isRecording());
 
-        long trackId = service.getRecordingTrackId();
+        Track.Id trackId = service.getRecordingTrackId();
 
         // when
-        long newTrackId = service.startNewTrack();
+        Track.Id newTrackId = service.startNewTrack();
 
         // then
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, newTrackId);
+        Assert.assertNull(newTrackId);
 
         Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
         Assert.assertEquals(trackId, service.getRecordingTrackId());
@@ -270,7 +279,7 @@ public class TrackRecordingServiceTest {
 
         // then
         Assert.assertFalse(PreferencesUtils.isRecording(context));
-        Assert.assertEquals(PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, service.getRecordingTrackId());
+        Assert.assertNull(service.getRecordingTrackId());
     }
 
     @MediumTest
@@ -281,10 +290,10 @@ public class TrackRecordingServiceTest {
         Assert.assertFalse(service.isRecording());
 
         // when
-        long waypointId = service.insertWaypoint(null, null, null, null);
+        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
 
         // then
-        Assert.assertEquals(-1L, waypointId);
+        Assert.assertNull(waypointId);
     }
 
     @MediumTest
@@ -294,11 +303,11 @@ public class TrackRecordingServiceTest {
         TrackRecordingServiceInterface service = ((TrackRecordingServiceInterface) mServiceRule.bindService(createStartIntent(context)));
         service.startNewTrack();
         Assert.assertTrue(service.isRecording());
-        insertLocation(service);
-        long trackId = service.getRecordingTrackId();
+        newTrackPoint(service);
+        Track.Id trackId = service.getRecordingTrackId();
 
         // when
-        long waypointId = service.insertWaypoint(null, null, null, null);
+        Waypoint.Id waypointId = service.insertWaypoint(null, null, null, null);
 
         // then
         Assert.assertNotEquals(-1L, waypointId);
@@ -313,15 +322,15 @@ public class TrackRecordingServiceTest {
     }
 
     private void addTrack(Track track, boolean isRecording) {
-        Assert.assertTrue(track.getId() >= 0);
+        Assert.assertTrue(track.getId().isValid());
         contentProviderUtils.insertTrack(track);
         Assert.assertEquals(track.getId(), contentProviderUtils.getTrack(track.getId()).getId());
-        PreferencesUtils.setLong(context, R.string.recording_track_id_key, isRecording ? track.getId() : PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        PreferencesUtils.setLong(context, R.string.recording_track_id_key, isRecording ? track.getId().getId() : PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
         PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, !isRecording);
     }
 
     // NOTE: Do not use to create a track that is currently recording.
-    private void createDummyTrack(long id, long stopTime, boolean isRecording) {
+    private void createDummyTrack(Track.Id id, long stopTime, boolean isRecording) {
         Track dummyTrack = new Track();
         dummyTrack.setId(id);
         dummyTrack.setName("Dummy Track");
@@ -331,18 +340,18 @@ public class TrackRecordingServiceTest {
         addTrack(dummyTrack, isRecording);
     }
 
-    private static void insertLocation(TrackRecordingServiceInterface trackRecordingService) throws InterruptedException {
-        insertLocation(trackRecordingService, 45.0f, 35f, 5, 10, System.currentTimeMillis());
+    private static void newTrackPoint(TrackRecordingServiceInterface trackRecordingService) throws InterruptedException {
+        newTrackPoint(trackRecordingService, 45.0f, 35f, 5, 10, System.currentTimeMillis());
     }
 
-    static void insertLocation(TrackRecordingServiceInterface trackRecordingService, double latitude, double longitude, float accuracy, long speed) throws InterruptedException {
-        insertLocation(trackRecordingService, latitude, longitude, accuracy, speed, System.currentTimeMillis());
+    static void newTrackPoint(TrackRecordingServiceInterface trackRecordingService, double latitude, double longitude, float accuracy, long speed) throws InterruptedException {
+        newTrackPoint(trackRecordingService, latitude, longitude, accuracy, speed, System.currentTimeMillis());
     }
 
     /**
      * Inserts a location and waits for 200ms.
      */
-    private static void insertLocation(TrackRecordingServiceInterface trackRecordingService, double latitude, double longitude, float accuracy, long speed, long time) throws InterruptedException {
+    private static void newTrackPoint(TrackRecordingServiceInterface trackRecordingService, double latitude, double longitude, float accuracy, long speed, long time) throws InterruptedException {
         Location location = new Location("gps");
         location.setLongitude(longitude);
         location.setLatitude(latitude);
@@ -350,7 +359,9 @@ public class TrackRecordingServiceTest {
         location.setSpeed(speed);
         location.setTime(time);
         location.setBearing(3.0f);
-        trackRecordingService.insertLocation(location);
+        TrackPoint trackPoint = new TrackPoint(location);
+        int prefAccuracy = PreferencesUtils.getRecordingGPSAccuracy(ApplicationProvider.getApplicationContext());
+        trackRecordingService.newTrackPoint(trackPoint, prefAccuracy);
 
         //TODO Needed?
         Thread.sleep(200);

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

@@ -23,6 +23,7 @@ import java.util.List;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.TimeoutException;
 
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
@@ -72,14 +73,11 @@ public class TrackRecordingServiceTestLocation {
         sharedPreferences.edit().clear().commit();
 
         service = ((TrackRecordingServiceInterface) mServiceRule.bindService(TrackRecordingServiceTest.createStartIntent(context)));
-        //Disable executorService to not insert locations from GPS via LocationManager
-        service.enableLocationExecutor(false);
     }
 
     @After
     public void tearDown() {
         // Reset service (if some previous test failed)
-        service.enableLocationExecutor(true);
         if (service.isRecording() || service.isPaused()) {
             service.endCurrentTrack();
         }
@@ -92,15 +90,15 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_movingAccurate() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0001, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0002, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0003, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0004, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0005, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0001, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0002, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0003, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0004, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0005, 35.0, 5, 15);
 
         service.endCurrentTrack();
 
@@ -112,42 +110,19 @@ public class TrackRecordingServiceTestLocation {
         Assert.assertEquals(45.0005, trackPoints.get(5).getLatitude(), 0.01);
     }
 
-    @MediumTest
-    @Test
-    public void testOnLocationChangedAsync_movingInaccurate() throws Exception {
-        // given
-        long trackId = service.startNewTrack();
-
-        // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.1, 35.0, Long.MAX_VALUE, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.2, 35.0, Long.MAX_VALUE, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.3, 35.0, Long.MAX_VALUE, 15);
-        TrackRecordingServiceTest.insertLocation(service, 99.0, 35.0, Long.MAX_VALUE, 15);
-
-        service.endCurrentTrack();
-
-        // then
-        Assert.assertFalse(service.isRecording());
-
-        List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(1, trackPoints.size());
-        Assert.assertEquals(45.0, trackPoints.get(0).getLatitude(), 0.01);
-    }
-
     @MediumTest
     @Test
     public void testOnLocationChangedAsync_slowMovingAccurate() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.000001, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.000002, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.000003, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.000004, 35.0, 5, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.000005, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.000001, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.000002, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.000003, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.000004, 35.0, 5, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.000005, 35.0, 5, 15);
 
         service.endCurrentTrack();
 
@@ -181,15 +156,15 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_idle() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 1, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 2, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 3, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 4, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 6, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 2, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 3, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 4, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 6, 0);
 
         service.endCurrentTrack();
 
@@ -207,15 +182,15 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_idle_withMovement() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 1, 15);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 2, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 3, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 4, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 6, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 15);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 2, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 3, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 4, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 6, 15);
 
         service.endCurrentTrack();
 
@@ -235,7 +210,7 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_idle_withSensorData() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         service.setRemoteSensorManager(new BluetoothRemoteSensorManager(context) {
 
@@ -253,12 +228,12 @@ public class TrackRecordingServiceTestLocation {
         });
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 0, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 1, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 2, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 3, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 4, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 5, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 0, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 2, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 3, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 4, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 5, 0);
 
         service.endCurrentTrack();
 
@@ -279,14 +254,14 @@ public class TrackRecordingServiceTestLocation {
     @Test
     public void testOnLocationChangedAsync_segment() throws Exception {
         // given
-        long trackId = service.startNewTrack();
+        Track.Id trackId = service.startNewTrack();
 
         // when
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 1, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.1, 35.0, 2, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.1, 35.0, 3, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.2, 35.0, 4, 0);
-        TrackRecordingServiceTest.insertLocation(service, 45.2, 35.0, 5, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.0, 35.0, 1, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.1, 35.0, 2, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.1, 35.0, 3, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.2, 35.0, 4, 0);
+        TrackRecordingServiceTest.newTrackPoint(service, 45.2, 35.0, 5, 0);
 
         service.endCurrentTrack();
 
@@ -303,25 +278,4 @@ public class TrackRecordingServiceTestLocation {
         Assert.assertEquals(4, trackPoints.get(5).getAccuracy(), 0.01);
         Assert.assertEquals(5, trackPoints.get(6).getAccuracy(), 0.01);
     }
-
-    @MediumTest
-    @Test
-    public void testOnLocationChangedAsync_firstTrackPointInvalid() throws Exception {
-        // given
-        long trackId = service.startNewTrack();
-
-        // when
-        service.insertLocation(TrackPoint.createPause().getLocation());
-        TrackRecordingServiceTest.insertLocation(service, 45.0, 35.0, 0, 0);
-        service.insertLocation(TrackPoint.createPause().getLocation());
-
-        service.endCurrentTrack();
-
-        // then
-        Assert.assertFalse(service.isRecording());
-
-        List<TrackPoint> trackPoints = contentProviderUtils.getTrackPoints(trackId);
-        Assert.assertEquals(1, trackPoints.size());
-        Assert.assertEquals(0, trackPoints.get(0).getAccuracy(), 0.01);
-    }
 }

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

@@ -26,6 +26,7 @@ import java.util.concurrent.TimeoutException;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.content.provider.CustomContentProvider;
 import de.dennisguse.opentracks.stats.TrackStatistics;
@@ -186,7 +187,7 @@ public class TrackRecordingServiceTestLooper {
     @MediumTest
     @Test
     public void testIntegration_completeRecordingSession() throws TimeoutException {
-        List<Track> tracks = contentProviderUtils.getAllTracks();
+        List<Track> tracks = contentProviderUtils.getTracks();
         Assert.assertTrue(tracks.isEmpty());
         fullRecordingSession();
     }
@@ -196,14 +197,14 @@ public class TrackRecordingServiceTestLooper {
         Assert.assertFalse(service.isRecording());
 
         // Start a track.
-        long id = service.startNewTrack();
-        Assert.assertTrue(id >= 0);
+        Track.Id trackId = service.startNewTrack();
+        Assert.assertTrue(trackId.isValid());
         Assert.assertTrue(service.isRecording());
-        Track track = contentProviderUtils.getTrack(id);
+        Track track = contentProviderUtils.getTrack(trackId);
         Assert.assertNotNull(track);
-        Assert.assertEquals(id, track.getId());
-        Assert.assertEquals(id, PreferencesUtils.getRecordingTrackId(context));
-        Assert.assertEquals(id, service.getRecordingTrackId());
+        Assert.assertEquals(trackId, track.getId());
+        Assert.assertEquals(trackId, PreferencesUtils.getRecordingTrackId(context));
+        Assert.assertEquals(trackId, service.getRecordingTrackId());
 
         // Insert a few points, markers and statistics.
         long startTime = System.currentTimeMillis();
@@ -215,7 +216,9 @@ public class TrackRecordingServiceTestLooper {
             location.setSpeed(10);
             location.setTime(startTime + i * 10000);
             location.setBearing(3.0f);
-            service.insertLocation(location);
+            TrackPoint trackPoint = new TrackPoint(location);
+            int prefAccuracy = PreferencesUtils.getRecordingGPSAccuracy(context);
+            service.newTrackPoint(trackPoint, prefAccuracy);
 
             if (i % 7 == 0) {
                 service.insertWaypoint(null, null, null, null);
@@ -225,10 +228,10 @@ public class TrackRecordingServiceTestLooper {
         // Stop the track. Validate if it has correct data.
         service.endCurrentTrack();
         Assert.assertFalse(service.isRecording());
-        Assert.assertEquals(-1L, service.getRecordingTrackId());
-        track = contentProviderUtils.getTrack(id);
+        Assert.assertNull(service.getRecordingTrackId());
+        track = contentProviderUtils.getTrack(trackId);
         Assert.assertNotNull(track);
-        Assert.assertEquals(id, track.getId());
+        Assert.assertEquals(trackId, track.getId());
         TrackStatistics trackStatistics = track.getTrackStatistics();
         Assert.assertNotNull(trackStatistics);
         Assert.assertTrue(trackStatistics.getStartTime_ms() > 0);

src/androidTest/java/de/dennisguse/opentracks/services/handlers/HandlerServerTest.java

@@ -0,0 +1,63 @@
+package de.dennisguse.opentracks.services.handlers;
+
+import android.content.Context;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import de.dennisguse.opentracks.content.data.TrackPoint;
+
+import static org.mockito.Mockito.verify;
+
+@RunWith(MockitoJUnitRunner.class)
+public class HandlerServerTest {
+
+    @Mock
+    private Context context;
+
+    @Mock
+    private HandlerServer.HandlerServerInterface server;
+
+    @Mock
+    private LocationHandler locationHandler;
+
+    private HandlerServer subject;
+
+    @Before
+    public void setUp() {
+        subject = new HandlerServer(locationHandler, server);
+        subject.start(context);
+    }
+
+    @After
+    public void tearDown() {
+        subject.stop(context);
+    }
+
+    @Test
+    public void onSharedPreferenceChanged() {
+        // when
+        subject.onSharedPreferenceChanged(null, null, null);
+
+        // then
+        verify(locationHandler).onSharedPreferenceChanged(null, null, null);
+    }
+
+    @Test
+    public void sendTrackPoint() throws InterruptedException {
+        // given
+        TrackPoint trackPoint = new TrackPoint();
+        int accuracy = 50;
+
+        // when
+        subject.sendTrackPoint(trackPoint, accuracy);
+
+        // then
+        Thread.sleep(10); // Wait for executor service
+        verify(server).newTrackPoint(trackPoint, accuracy);
+    }
+}

src/androidTest/java/de/dennisguse/opentracks/services/handlers/LocationHandlerTest.java

@@ -0,0 +1,117 @@
+package de.dennisguse.opentracks.services.handlers;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.location.Location;
+
+import androidx.test.core.app.ApplicationProvider;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.MockitoJUnitRunner;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.util.PreferencesUtils;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+@RunWith(MockitoJUnitRunner.class)
+public class LocationHandlerTest {
+
+    private final Context context = ApplicationProvider.getApplicationContext();
+
+    @Mock
+    private HandlerServer handlerServer;
+
+    @InjectMocks
+    private LocationHandler locationHandler;
+
+    @Before
+    public void setUp() {
+        // Let's use default values.
+        SharedPreferences sharedPreferences = PreferencesUtils.getSharedPreferences(context);
+        sharedPreferences.edit().clear().commit();
+
+        locationHandler.onSharedPreferenceChanged(context, PreferencesUtils.getSharedPreferences(context), context.getString(R.string.recording_gps_accuracy_key));
+        locationHandler.onSharedPreferenceChanged(context, PreferencesUtils.getSharedPreferences(context), context.getString(R.string.min_recording_interval_key));
+        locationHandler.onStart(context);
+    }
+
+    /**
+     * When a valid location changed in LocationHandler -> newTrackPoint service method is called.
+     */
+    @Test
+    public void testOnLocationChanged_okay() {
+        // when
+        locationHandler.onLocationChanged(createLocation(45f, 35f, 3, 5, System.currentTimeMillis()));
+
+        // then
+        verify(handlerServer, times(1)).sendTrackPoint(any(TrackPoint.class), any(Integer.class));
+    }
+
+    /**
+     * When location changed in LocationHandler with bad location -> newTrackPoint service method is not called.
+     */
+    @Test
+    public void testOnLocationChanged_badLocation() {
+        // given
+        float latitude = 91f;
+
+        // when
+        // bad latitude
+        locationHandler.onLocationChanged(createLocation(latitude, 35f, 3, 5, System.currentTimeMillis()));
+
+        // then
+        verify(handlerServer, times(0)).sendTrackPoint(any(TrackPoint.class), any(Integer.class));
+    }
+
+    /**
+     * When location changed in LocationHandler with poor accuracy -> newTrackPoint service method is not called.
+     */
+    @Test
+    public void testOnLocationChanged_poorAccuracy() {
+        // given
+        int prefAccuracy = PreferencesUtils.getRecordingGPSAccuracy(context);
+
+        // when
+        // poor latitude
+        locationHandler.onLocationChanged(createLocation(45f, 35f, prefAccuracy + 1, 5, System.currentTimeMillis()));
+
+        // then
+        // no newTrackPoint called
+        verify(handlerServer, times(0)).sendTrackPoint(any(TrackPoint.class), any(Integer.class));
+    }
+
+    @Test
+    public void testOnLocationChanged_movingInaccurate() {
+        // when
+        locationHandler.onLocationChanged(createLocation(45.0, 35.0, 5, 15, System.currentTimeMillis()));
+        locationHandler.onLocationChanged(createLocation(45.1, 35.0, Long.MAX_VALUE, 15, System.currentTimeMillis()));
+        locationHandler.onLocationChanged(createLocation(45.2, 35.0, Long.MAX_VALUE, 15, System.currentTimeMillis()));
+        locationHandler.onLocationChanged(createLocation(45.3, 35.0, Long.MAX_VALUE, 15, System.currentTimeMillis()));
+        locationHandler.onLocationChanged(createLocation(99.0, 35.0, Long.MAX_VALUE, 15, System.currentTimeMillis()));
+
+        // then
+        verify(handlerServer, times(1)).sendTrackPoint(any(TrackPoint.class), any(Integer.class));
+    }
+
+    /**
+     * Creates a location with parameters and returns the Location object.
+     */
+    private static Location createLocation(double latitude, double longitude, float accuracy, long speed, long time) {
+        Location location = new Location("gps");
+        location.setLongitude(longitude);
+        location.setLatitude(latitude);
+        location.setAccuracy(accuracy);
+        location.setSpeed(speed);
+        location.setTime(time);
+        location.setBearing(3.0f);
+        return location;
+    }
+}

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

@@ -212,4 +212,16 @@ public class StringUtilsTest {
 
         Assert.assertEquals("1", StringUtils.formatDecimal(0.99, 1));
     }
+
+    @Test
+    public void testGetSpeedParts() {
+        Assert.assertEquals("4:59", StringUtils.getSpeedParts(context, 3.34, true, false).first);
+        Assert.assertEquals("5:00", StringUtils.getSpeedParts(context, 3.33, true, false).first);
+
+        Assert.assertEquals("11.99", StringUtils.getSpeedParts(context, 3.33, true, true).first);
+        Assert.assertEquals("7.45", StringUtils.getSpeedParts(context, 3.33, false, true).first);
+
+        Assert.assertEquals("min/km", StringUtils.getSpeedParts(context, 0, true, false).second);
+        Assert.assertEquals("min/mi", StringUtils.getSpeedParts(context, 0, false, false).second);
+    }
 }

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

@@ -30,6 +30,7 @@ import java.util.Date;
 import java.util.Locale;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
 
 /**
  * Tests {@link TrackNameUtils}.
@@ -39,7 +40,7 @@ import de.dennisguse.opentracks.R;
 @RunWith(AndroidJUnit4.class)
 public class TrackNameUtilsTest {
 
-    private static final long TRACK_ID = 1L;
+    private static final Track.Id TRACK_ID = new Track.Id(1L);
     private static final long START_TIME = 1288213406000L;
 
     private static final Context CONTEXT = ApplicationProvider.getApplicationContext();
@@ -69,6 +70,6 @@ public class TrackNameUtilsTest {
     @Test
     public void testTrackName_number() {
         PreferencesUtils.setString(CONTEXT, R.string.track_name_key, CONTEXT.getString(R.string.settings_recording_track_name_number_value));
-        Assert.assertEquals("Track " + TRACK_ID, TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
+        Assert.assertEquals("Track " + TRACK_ID.getId(), TrackNameUtils.getTrackName(CONTEXT, TRACK_ID, START_TIME));
     }
 }

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

@@ -0,0 +1,23 @@
+package de.dennisguse.opentracks.util;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import java.util.UUID;
+
+@RunWith(AndroidJUnit4.class)
+public class UUIDUtilsTest {
+
+    @Test
+    public void test() {
+        UUID uuid = UUID.randomUUID();
+
+        byte[] bytes = UUIDUtils.toBytes(uuid);
+        UUID output = UUIDUtils.fromBytes(bytes);
+
+        Assert.assertEquals(uuid, output);
+    }
+}

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

@@ -60,7 +60,7 @@ public class AggregatedStatisticsTest {
 
         // then
         Assert.assertEquals(1, aggregatedStatistics.getCount());
-        Assert.assertTrue(aggregatedStatistics.get(biking) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(biking));
         Assert.assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
 
         TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
@@ -82,7 +82,7 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(track);
 
         // then
-        Assert.assertTrue(aggregatedStatistics.get(mountainBiking) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(mountainBiking));
     }
 
     @Test
@@ -99,7 +99,7 @@ public class AggregatedStatisticsTest {
         aggregatedStatistics.aggregate(track);
 
         // then
-        Assert.assertTrue(aggregatedStatistics.get(trailRunning) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(trailRunning));
     }
 
     @Test
@@ -121,7 +121,7 @@ public class AggregatedStatisticsTest {
 
         // then
         Assert.assertEquals(1, aggregatedStatistics.getCount());
-        Assert.assertTrue(aggregatedStatistics.get(biking) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(biking));
         Assert.assertEquals(2, aggregatedStatistics.get(biking).getCountTracks());
 
         TrackStatistics statistics2 = aggregatedStatistics.get(biking).getTrackStatistics();
@@ -153,9 +153,9 @@ public class AggregatedStatisticsTest {
 
         // then
         Assert.assertEquals(3, aggregatedStatistics.getCount());
-        Assert.assertTrue(aggregatedStatistics.get(biking) != null);
-        Assert.assertTrue(aggregatedStatistics.get(running) != null);
-        Assert.assertTrue(aggregatedStatistics.get(walking) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(biking));
+        Assert.assertNotNull(aggregatedStatistics.get(running));
+        Assert.assertNotNull(aggregatedStatistics.get(walking));
         Assert.assertEquals(1, aggregatedStatistics.get(biking).getCountTracks());
         Assert.assertEquals(1, aggregatedStatistics.get(running).getCountTracks());
         Assert.assertEquals(1, aggregatedStatistics.get(walking).getCountTracks());
@@ -215,10 +215,10 @@ public class AggregatedStatisticsTest {
         Assert.assertEquals(4, aggregatedStatistics.getCount());
 
         // There is a map for every sport.
-        Assert.assertTrue(aggregatedStatistics.get(biking) != null);
-        Assert.assertTrue(aggregatedStatistics.get(running) != null);
-        Assert.assertTrue(aggregatedStatistics.get(walking) != null);
-        Assert.assertTrue(aggregatedStatistics.get(driving) != null);
+        Assert.assertNotNull(aggregatedStatistics.get(biking));
+        Assert.assertNotNull(aggregatedStatistics.get(running));
+        Assert.assertNotNull(aggregatedStatistics.get(walking));
+        Assert.assertNotNull(aggregatedStatistics.get(driving));
 
         // Number of tracks by sport.
         Assert.assertEquals(5, aggregatedStatistics.get(biking).getCountTracks()); // Biking.

src/debug/res/mipmap-anydpi-v26/ic_launcher.xml

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

src/debug/res/values/ic_launcher_background.xml

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

src/debug/res/values/strings.xml

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

src/main/AndroidManifest.xml

@@ -14,6 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 -->
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="de.dennisguse.opentracks"
     android:installLocation="auto">
 
@@ -24,45 +25,91 @@ limitations under the License.
         android:smallScreens="true"
         android:xlargeScreens="true" />
 
+    <uses-feature
+        android:name="android.hardware.location.gps"
+        android:required="true" />
+    <uses-feature
+        android:name="android.hardware.android.hardware.bluetooth_le"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.camera"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.sensor.compass"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+
     <application
         android:name=".Startup"
         android:allowBackup="false"
         android:hasFragileUserData="true"
         android:hardwareAccelerated="true"
-        android:icon="${applicationLogo}"
-        android:label="${applicationName}"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
         android:theme="@style/ThemeCustom">
 
-        <!-- Activities -->
         <activity android:name=".AboutActivity" />
 
         <activity
             android:name=".TrackDeleteActivity"
-            android:theme="@style/ThemeCustomTransparent" />
+            android:theme="@style/TrackDeleteActivity" />
 
         <activity
             android:name=".HelpActivity"
             android:label="@string/menu_help" />
 
+        <activity android:name=".io.file.importer.DirectoryChooserActivity$ImportDirectoryChooserActivity" />
+
         <activity
             android:name=".io.file.importer.ImportActivity"
-            android:theme="@style/ThemeCustomTransparent">
+            android:theme="@style/ThemeCustomTransparentActivity">
+
             <intent-filter>
-                <action android:name="android.intent.action.ATTACH_DATA" />
                 <action android:name="android.intent.action.VIEW" />
-
-                <category android:name="android.intent.category.BROWSABLE" />
                 <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="application/vnd.google-earth.kmz" />
+                <data
+                    android:scheme="content"
+                    android:host="*"
+                    android:pathPattern="*kmz" />
+            </intent-filter>
 
-                <data android:mimeType="application/gpx" />
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="application/vnd.google-earth.kml+xml" />
+                <data
+                    android:scheme="content"
+                    android:host="*"
+                    android:pathPattern="*kml" />
+            </intent-filter>
+
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
                 <data android:mimeType="application/gpx+xml" />
-                <data android:mimeType="application/vnd.google-earth.gpx" />
-                <data android:mimeType="application/vnd.google-earth.gpx+xml" />
-                <data android:scheme="file" />
+                <data
+                    android:scheme="content"
+                    android:host="*"
+                    android:pathPattern="*gpx" />
             </intent-filter>
         </activity>
 
-        <activity android:name=".MarkerDetailActivity" />
+        <activity android:name=".MarkerDetailActivity">
+            <intent-filter>
+                <action android:name="de.dennisguse.opentracks.MarkerDetails"/>
+                <category android:name="android.intent.category.DEFAULT" />
+            </intent-filter>
+        </activity>
 
         <activity android:name=".MarkerEditActivity" />
 
@@ -85,13 +132,9 @@ limitations under the License.
                 android:resource="@xml/searchable" />
         </activity>
 
-        <activity
-            android:name=".TrackRecordedActivity"
-            android:screenOrientation="userPortrait" />
+        <activity android:name=".TrackRecordedActivity" />
 
-        <activity
-            android:name=".TrackRecordingActivity"
-            android:screenOrientation="userPortrait" />
+        <activity android:name=".TrackRecordingActivity" />
 
         <activity android:name=".TrackEditActivity" />
 
@@ -105,14 +148,13 @@ limitations under the License.
                 android:value=".SearchListActivity" />
         </activity>
 
-        <activity
-            android:name=".AggregatedStatisticsActivity"
-            android:screenOrientation="userPortrait"
-            android:label="@string/menu_aggregated_statistics"/>
+        <activity android:name=".AggregatedStatisticsActivity" />
+
+        <activity android:name=".io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserActivity" />
 
         <activity
             android:name=".io.file.exporter.ExportActivity"
-            android:theme="@style/ThemeCustomTransparent" />
+            android:theme="@style/ThemeCustomTransparentActivity" />
 
         <activity android:name=".settings.SettingsActivity" />
 
@@ -153,27 +195,4 @@ limitations under the License.
             android:icon="@drawable/ic_logo_color_24dp"
             android:label="@string/recording_service" />
     </application>
-
-    <!-- Permissions to record locations -->
-    <uses-feature
-        android:name="android.hardware.location.gps"
-        android:required="true" />
-    <uses-feature
-        android:name="android.hardware.android.hardware.bluetooth_le"
-        android:required="false" />
-    <uses-feature
-        android:name="android.hardware.camera"
-        android:required="false" />
-    <uses-feature
-        android:name="android.hardware.sensor.compass"
-        android:required="false" />
-    <uses-feature
-        android:name="android.hardware.touchscreen"
-        android:required="false" />
-
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
-    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
-    <uses-permission android:name="android.permission.WAKE_LOCK" />
-    <uses-permission android:name="android.permission.BLUETOOTH" />
-    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
 </manifest>

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

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

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

@@ -18,6 +18,10 @@ package de.dennisguse.opentracks;
 
 import android.content.Intent;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment.ConfirmDeleteCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
@@ -55,30 +59,29 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
      *
      * @param trackIds the track ids
      */
-    protected void deleteTracks(long[] trackIds) {
+    protected void deleteTracks(Track.Id... trackIds) {
         ConfirmDeleteDialogFragment.showDialog(getSupportFragmentManager(), trackIds);
     }
 
     @Override
-    public void onConfirmDeleteDone(long[] trackIds) {
+    public void onConfirmDeleteDone(Track.Id... trackIds) {
         boolean stopRecording = false;
-        if (trackIds.length == 1 && trackIds[0] == -1L) {
-            stopRecording = true;
-        } else {
-            long recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
-            for (long trackId : trackIds) {
-                if (trackId == recordingTrackId) {
-                    stopRecording = true;
-                    break;
-                }
+
+        Track.Id recordingTrackId = PreferencesUtils.getRecordingTrackId(this);
+        for (Track.Id trackId : trackIds) {
+            if (trackId.equals(recordingTrackId)) {
+                stopRecording = true;
+                break;
             }
         }
+
         if (stopRecording) {
             getTrackRecordingServiceConnection().stopRecording(this, false);
         }
         Intent intent = IntentUtils.newIntent(this, TrackDeleteActivity.class);
-        intent.putExtra(TrackDeleteActivity.EXTRA_TRACK_IDS, trackIds);
+        intent.putParcelableArrayListExtra(TrackDeleteActivity.EXTRA_TRACK_IDS, new ArrayList<>(Arrays.asList(trackIds)));
         startActivityForResult(intent, DELETE_REQUEST_CODE);
+        overridePendingTransition(android.R.anim.fade_in, android.R.anim.fade_out);
     }
 
     /**

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

@@ -3,11 +3,9 @@ package de.dennisguse.opentracks;
 import android.os.Bundle;
 import android.widget.ListView;
 
-import androidx.lifecycle.Observer;
 import androidx.lifecycle.ViewModelProvider;
 
 import de.dennisguse.opentracks.adapters.AggregatedStatisticsAdapter;
-import de.dennisguse.opentracks.viewmodels.AggregatedStatistics;
 import de.dennisguse.opentracks.viewmodels.AggregatedStatisticsModel;
 
 public class AggregatedStatisticsActivity extends AbstractActivity {
@@ -20,17 +18,15 @@ public class AggregatedStatisticsActivity extends AbstractActivity {
         super.onCreate(savedInstanceState);
 
         listView = findViewById(R.id.aggregated_stats_list);
+        listView.setEmptyView(findViewById(R.id.aggregated_stats_empty_view));
 
         final AggregatedStatisticsModel viewModel = new ViewModelProvider(this).get(AggregatedStatisticsModel.class);
-        viewModel.getAggregatedStats().observe(this, new Observer<AggregatedStatistics>() {
-            @Override
-            public void onChanged(AggregatedStatistics aggregatedStatistics) {
-                if (aggregatedStatistics != null) {
-                    adapter = new AggregatedStatisticsAdapter(getApplicationContext(), aggregatedStatistics);
-                    listView.setAdapter(adapter);
-                }
-                adapter.notifyDataSetChanged();
+        viewModel.getAggregatedStats().observe(this, aggregatedStatistics -> {
+            if (aggregatedStatistics != null) {
+                adapter = new AggregatedStatisticsAdapter(getApplicationContext(), aggregatedStatistics);
+                listView.setAdapter(adapter);
             }
+            adapter.notifyDataSetChanged();
         });
     }
 

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

@@ -1,94 +0,0 @@
-package de.dennisguse.opentracks;
-
-/*
- * 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.
- */
-
-import android.content.Context;
-import android.os.AsyncTask;
-
-import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
-
-/**
- * Async Task to delete tracks.
- *
- * @author Jimmy Shih
- */
-class DeleteAsyncTask extends AsyncTask<Void, Integer, Boolean> {
-
-    private final long[] trackIds;
-    private final Context context;
-    private TrackDeleteActivity deleteActivity;
-    // true if the AsyncTask has completed
-    private boolean completed;
-
-    /**
-     * Creates an AsyncTask.
-     *
-     * @param deleteActivity the activity currently associated with this task
-     * @param trackIds       the track ids to delete. To delete all, set to size 1 with
-     *                       trackIds[0] == -1L
-     */
-    public DeleteAsyncTask(TrackDeleteActivity deleteActivity, long[] trackIds) {
-        this.deleteActivity = deleteActivity;
-        this.trackIds = trackIds;
-        context = deleteActivity.getApplicationContext();
-        completed = false;
-    }
-
-    /**
-     * Sets the current activity associated with this AyncTask.
-     *
-     * @param deleteActivity the current activity, can be null
-     */
-    public void setActivity(TrackDeleteActivity deleteActivity) {
-        this.deleteActivity = deleteActivity;
-        if (completed && deleteActivity != null) {
-            deleteActivity.onAsyncTaskCompleted();
-        }
-    }
-
-    @Override
-    protected void onPreExecute() {
-        if (deleteActivity != null) {
-            deleteActivity.showProgressDialog();
-        }
-    }
-
-    @Override
-    protected Boolean doInBackground(Void... params) {
-        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
-
-        if (trackIds.length == 1 && trackIds[0] == -1L) {
-            contentProviderUtils.deleteAllTracks(context);
-        } else {
-            for (long id : trackIds) {
-                if (isCancelled()) {
-                    return false;
-                }
-                contentProviderUtils.deleteTrack(context, id);
-            }
-        }
-        return true;
-    }
-
-    @Override
-    protected void onPostExecute(Boolean result) {
-        completed = true;
-        if (deleteActivity != null) {
-            deleteActivity.onAsyncTaskCompleted();
-        }
-    }
-}

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

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

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

@@ -48,32 +48,33 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
     private static final String TAG = MarkerDetailActivity.class.getSimpleName();
 
-    private List<Long> markerIds;
+    private List<Waypoint.Id> waypointIds;
 
     @Override
     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
 
-        long markerId = getIntent().getLongExtra(EXTRA_MARKER_ID, -1L);
-        if (markerId == -1L) {
+        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
+        if (waypointId == null) {
             Log.d(TAG, "invalid marker id");
             finish();
             return;
         }
 
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
-        Waypoint waypoint = contentProviderUtils.getWaypoint(markerId);
+        Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
 
-        markerIds = new ArrayList<>();
+        waypointIds = new ArrayList<>();
         int markerIndex = -1;
 
-        try (Cursor cursor = contentProviderUtils.getWaypointCursor(waypoint.getTrackId(), -1L, -1)) {
+        //TODO Load only waypointIds, not the whole waypoint
+        try (Cursor cursor = contentProviderUtils.getWaypointCursor(waypoint.getTrackId(), null, -1)) {
             if (cursor != null && cursor.moveToFirst()) {
                 for (int i = 0; i < cursor.getCount(); i++) {
                     Waypoint currentMarker = contentProviderUtils.createWaypoint(cursor);
-                    markerIds.add(currentMarker.getId());
-                    if (currentMarker.getId() == markerId) {
-                        markerIndex = markerIds.size() - 1;
+                    waypointIds.add(currentMarker.getId());
+                    if (waypointId.equals(currentMarker.getId())) {
+                        markerIndex = waypointIds.size() - 1;
                     }
 
                     cursor.moveToNext();
@@ -120,13 +121,13 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
     private class MarkerDetailPagerAdapter extends FragmentStatePagerAdapter {
 
         MarkerDetailPagerAdapter(FragmentManager fragmentManager) {
-            super(fragmentManager);
+            super(fragmentManager, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
         }
 
         @Override
         @NonNull
         public Fragment getItem(int position) {
-            return MarkerDetailFragment.newInstance(markerIds.get(position));
+            return MarkerDetailFragment.newInstance(waypointIds.get(position));
         }
 
         @Nullable
@@ -137,7 +138,7 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
 
         @Override
         public int getCount() {
-            return markerIds.size();
+            return waypointIds.size();
         }
     }
 }

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

@@ -29,7 +29,6 @@ import android.util.Pair;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.view.View.OnClickListener;
 import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.Button;
@@ -43,6 +42,7 @@ import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
 
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
@@ -59,13 +59,14 @@ public class MarkerEditActivity extends AbstractActivity {
     public static final String EXTRA_TRACK_ID = "track_id";
     public static final String EXTRA_MARKER_ID = "marker_id";
 
+    private static final String BUNDLE_PHOTO_URI = "photo_uri";
+
     private static final int CAMERA_REQUEST_CODE = 5;
     private static final int GALLERY_IMG_REQUEST_CODE = 7;
 
     private static final String TAG = MarkerEditActivity.class.getSimpleName();
-    private long trackId;
-    private long markerId;
-    private TrackRecordingServiceConnection trackRecordingServiceConnection;
+    private Track.Id trackId;
+    private TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
     private Waypoint waypoint;
 
     private MenuItem insertPhotoMenuItem;
@@ -80,15 +81,13 @@ public class MarkerEditActivity extends AbstractActivity {
     private EditText waypointDescription;
     private ImageView waypointPhoto;
     private ImageView waypointDeletePhotoBtn;
-    private Button done;
 
     @Override
-    protected void onCreate(Bundle bundle) {
-        super.onCreate(bundle);
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
 
-        trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
-        markerId = getIntent().getLongExtra(EXTRA_MARKER_ID, -1L);
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(null);
+        trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
+        Waypoint.Id waypointId = getIntent().getParcelableExtra(EXTRA_MARKER_ID);
 
         hasCamera = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);
 
@@ -101,26 +100,67 @@ public class MarkerEditActivity extends AbstractActivity {
         waypointPhoto = findViewById(R.id.marker_edit_waypoint_photo);
 
         waypointDeletePhotoBtn = findViewById(R.id.marker_edit_waypoint_photo_delete);
-        waypointDeletePhotoBtn.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (waypoint != null && waypoint.hasPhoto())
-                    waypoint.setPhotoUrl(null);
-                waypointPhoto.setImageBitmap(null);
-                photoUri = null;
-                hideAndShowOptions();
+        waypointDeletePhotoBtn.setOnClickListener(v -> {
+            if (waypoint != null && waypoint.hasPhoto()) {
+                waypoint.setPhotoUrl(null);
             }
+            waypointPhoto.setImageBitmap(null);
+            photoUri = null;
+            hideAndShowOptions();
         });
 
         Button cancel = findViewById(R.id.marker_edit_cancel);
-        cancel.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                finish();
+        cancel.setOnClickListener(v -> finish());
+
+        final boolean isNewMarker = waypointId == null;
+
+        setTitle(isNewMarker ? R.string.menu_insert_marker : R.string.menu_edit);
+        Button done = findViewById(R.id.marker_edit_done);
+        done.setText(isNewMarker ? R.string.generic_add : R.string.generic_save);
+        done.setOnClickListener(v -> {
+            if (isNewMarker) {
+                addMarker();
+            } else {
+                saveMarker();
             }
+            finish();
         });
-        done = findViewById(R.id.marker_edit_done);
-        updateUiByMarkerId();
+
+        if (isNewMarker) {
+            int nextWaypointNumber = trackId == null ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId);
+            if (nextWaypointNumber == -1) {
+                nextWaypointNumber = 0;
+            }
+            waypointName.setText(getString(R.string.marker_name_format, nextWaypointNumber));
+            waypointName.selectAll();
+            waypointMarkerType.setText("");
+            waypointDescription.setText("");
+        } else {
+            waypoint = new ContentProviderUtils(this).getWaypoint(waypointId);
+            if (waypoint == null) {
+                Log.d(TAG, "waypoint is null");
+                finish();
+                return;
+            }
+            waypointName.setText(waypoint.getName());
+            waypointMarkerType.setText(waypoint.getCategory());
+            waypointDescription.setText(waypoint.getDescription());
+            if (waypoint.hasPhoto()) {
+                photoUri = waypoint.getPhotoURI();
+            }
+        }
+
+        if (savedInstanceState != null) {
+            photoUri = savedInstanceState.getParcelable(BUNDLE_PHOTO_URI);
+            if (waypoint != null) {
+                waypoint.setPhotoUrl(photoUri != null ? photoUri.toString() : null);
+            }
+        }
+        if (photoUri != null) {
+            setWaypointImageView(photoUri);
+        }
+
+        hideAndShowOptions();
     }
 
     @Override
@@ -129,6 +169,12 @@ public class MarkerEditActivity extends AbstractActivity {
         trackRecordingServiceConnection.startConnection(this);
     }
 
+    @Override
+    protected void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putParcelable(BUNDLE_PHOTO_URI, photoUri);
+    }
+
     @Override
     protected void onStop() {
         super.onStop();
@@ -198,54 +244,6 @@ public class MarkerEditActivity extends AbstractActivity {
         super.onActivityResult(requestCode, resultCode, data);
     }
 
-    /**
-     * Updates the UI based on the marker id.
-     */
-    private void updateUiByMarkerId() {
-        final boolean newMarker = markerId == -1L;
-
-        setTitle(newMarker ? R.string.menu_insert_marker : R.string.menu_edit);
-        done.setText(newMarker ? R.string.generic_add : R.string.generic_save);
-        done.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (newMarker) {
-                    addMarker();
-                } else {
-                    saveMarker();
-                }
-                finish();
-            }
-        });
-
-        if (newMarker) {
-            int nextWaypointNumber = trackId == -1L ? -1 : new ContentProviderUtils(this).getNextWaypointNumber(trackId);
-            if (nextWaypointNumber == -1) {
-                nextWaypointNumber = 0;
-            }
-            waypointName.setText(getString(R.string.marker_name_format, nextWaypointNumber));
-            waypointName.selectAll();
-            waypointMarkerType.setText("");
-            waypointDescription.setText("");
-        } else {
-            waypoint = new ContentProviderUtils(this).getWaypoint(markerId);
-            if (waypoint == null) {
-                Log.d(TAG, "waypoint is null");
-                finish();
-                return;
-            }
-            waypointName.setText(waypoint.getName());
-            waypointMarkerType.setText(waypoint.getCategory());
-            waypointDescription.setText(waypoint.getDescription());
-            if (waypoint.hasPhoto()) {
-                photoUri = waypoint.getPhotoURI();
-                setWaypointImageView(photoUri);
-            }
-        }
-
-        hideAndShowOptions();
-    }
-
     /**
      * Checks and hide/shows all buttons/options about marker photo options.
      *
@@ -263,8 +261,8 @@ public class MarkerEditActivity extends AbstractActivity {
     /**
      * Returns the trackId. If trackId == -1 then get it from waypoint object.
      */
-    private long getTrackId() {
-        return trackId == -1 ? waypoint.getTrackId() : trackId;
+    private Track.Id getTrackId() {
+        return trackId == null ? waypoint.getTrackId() : trackId;
     }
 
     /**
@@ -272,13 +270,13 @@ public class MarkerEditActivity extends AbstractActivity {
      *
      * @param uri the uri photo.
      */
-    private void setWaypointImageView(Uri uri) {
+    private void setWaypointImageView(@NonNull Uri uri) {
         try (ParcelFileDescriptor pfd = getContentResolver().openFileDescriptor(uri, "r")) {
             FileDescriptor fd = pfd.getFileDescriptor();
             Bitmap bitmap = BitmapFactory.decodeFileDescriptor(fd);
             waypointPhoto.setImageBitmap(bitmap);
             hideAndShowOptions();
-        } catch(IOException e) {
+        } catch (IOException e) {
             Log.e(TAG, e.getMessage());
             Toast.makeText(this, R.string.marker_add_photo_canceled, Toast.LENGTH_LONG).show();
         }
@@ -295,9 +293,6 @@ public class MarkerEditActivity extends AbstractActivity {
         startActivityForResult(intent, GALLERY_IMG_REQUEST_CODE);
     }
 
-    /**
-     * Adds a marker.
-     */
     private void addMarker() {
         trackRecordingServiceConnection.addMarker(this,
                 waypointName.getText().toString(),
@@ -306,9 +301,6 @@ public class MarkerEditActivity extends AbstractActivity {
                 photoUri != null ? photoUri.toString() : null);
     }
 
-    /**
-     * Saves a marker.
-     */
     private void saveMarker() {
         waypoint.setName(waypointName.getText().toString());
         waypoint.setCategory(waypointMarkerType.getText().toString());

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

@@ -26,18 +26,16 @@ import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 
 import androidx.annotation.NonNull;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
-import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;
 
 import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
@@ -59,16 +57,11 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
 
     private static final String TAG = MarkerListActivity.class.getSimpleName();
 
-    private static final String[] PROJECTION = new String[]{WaypointsColumns._ID,
-            WaypointsColumns.NAME, WaypointsColumns.DESCRIPTION, WaypointsColumns.CATEGORY,
-            WaypointsColumns.TIME, WaypointsColumns.PHOTOURL,
-            WaypointsColumns.LATITUDE, WaypointsColumns.LONGITUDE};
-
     private ContentProviderUtils contentProviderUtils;
 
     private SharedPreferences sharedPreferences;
 
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId;
     private boolean recordingTrackPaused;
 
     private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
@@ -82,7 +75,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
                 recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(MarkerListActivity.this);
             }
             if (key != null) {
-                runOnUiThread(() -> MarkerListActivity.this.invalidateOptionsMenu());
+                runOnUiThread(MarkerListActivity.this::invalidateOptionsMenu);
             }
         }
     };
@@ -119,23 +112,20 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);
-        long trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
+        Track.Id trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
         recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
 
         contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
 
-        track = trackId != -1L ? contentProviderUtils.getTrack(trackId) : null;
+        track = trackId != null ? contentProviderUtils.getTrack(trackId) : null;
 
         listView = findViewById(R.id.marker_list);
         listView.setEmptyView(findViewById(R.id.marker_list_empty));
-        listView.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-                Intent intent = IntentUtils.newIntent(MarkerListActivity.this, MarkerDetailActivity.class)
-                        .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, id);
-                startActivity(intent);
-            }
+        listView.setOnItemClickListener((parent, view, position, id) -> {
+            Intent intent = IntentUtils.newIntent(MarkerListActivity.this, MarkerDetailActivity.class)
+                    .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, new Waypoint.Id(id));
+            startActivity(intent);
         });
         resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.list_item, null, 0) {
             @Override
@@ -168,14 +158,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
             @NonNull
             @Override
             public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-                if (track != null) {
-                    return new CursorLoader(MarkerListActivity.this, WaypointsColumns.CONTENT_URI, PROJECTION,
-                            WaypointsColumns.TRACKID + "=?",
-                            new String[]{String.valueOf(track.getId())}, null);
-                } else {
-                    return new CursorLoader(MarkerListActivity.this, WaypointsColumns.CONTENT_URI, PROJECTION,
-                            null, null, null);
-                }
+                return ContentProviderUtils.getWaypointsLoader(MarkerListActivity.this, track != null ? track.getId() : null);
             }
 
             @Override
@@ -228,7 +211,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        insertMarkerMenuItem.setVisible(track != null && track.getId() == recordingTrackId && !recordingTrackPaused);
+        insertMarkerMenuItem.setVisible(track != null && track.getId().equals(recordingTrackId) && !recordingTrackPaused);
         return super.onPrepareOptionsMenu(menu);
     }
 
@@ -246,34 +229,38 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
     /**
      * Handles a context item selection.
      *
-     * @param itemId    the menu item id
-     * @param markerIds the marker ids
+     * @param itemId          the menu item id
+     * @param longWaypointIds the marker ids
      * @return true if handled.
      */
-    private boolean handleContextItem(int itemId, long[] markerIds) {
+    private boolean handleContextItem(int itemId, long... longWaypointIds) {
+        Waypoint.Id[] waypointIds = new Waypoint.Id[longWaypointIds.length];
+        for (int i = 0; i < longWaypointIds.length; i++) {
+            waypointIds[i] = new Waypoint.Id(longWaypointIds[i]);
+        }
+
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
-                if (markerIds.length == 1) {
-                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(markerIds[0]));
+                if (waypointIds.length == 1) {
+                    IntentUtils.showCoordinateOnMap(this, contentProviderUtils.getWaypoint(waypointIds[0]));
                 }
                 return true;
             case R.id.list_context_menu_edit:
-                if (markerIds.length == 1) {
+                if (waypointIds.length == 1) {
                     intent = IntentUtils.newIntent(this, MarkerEditActivity.class)
-                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerIds[0]);
+                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, waypointIds[0]);
                     startActivity(intent);
                 }
                 return true;
             case R.id.list_context_menu_delete:
-                if (markerIds.length > 1 && markerIds.length == listView.getCount()) {
-                    markerIds = new long[]{-1L};
+                if (waypointIds.length > 1 && waypointIds.length == listView.getCount()) {
+                    waypointIds = null;
                 }
-                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), markerIds);
+                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), waypointIds);
                 return true;
             case R.id.list_context_menu_select_all:
-                int size = listView.getCount();
-                for (int i = 0; i < size; i++) {
+                for (int i = 0; i < listView.getCount(); i++) {
                     listView.setItemChecked(i, true);
                 }
                 return false;

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

@@ -26,8 +26,6 @@ import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
 
@@ -99,7 +97,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
     private boolean metricUnits = true;
 
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId;
 
     private boolean recordingTrackPaused;
 
@@ -167,7 +165,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
         contentProviderUtils = new ContentProviderUtils(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(null);
+        trackRecordingServiceConnection = new TrackRecordingServiceConnection();
         searchEngine = new SearchEngine(contentProviderUtils);
 
         arrayAdapter = new ArrayAdapter<Map<String, Object>>(this, R.layout.list_item, R.id.list_item_name) {
@@ -203,20 +201,17 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
         ListView listView = findViewById(R.id.search_list);
         listView.setAdapter(arrayAdapter);
         listView.setEmptyView(findViewById(R.id.search_list_empty));
-        listView.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
-                Map<String, Object> item = arrayAdapter.getItem(position);
-                Long trackId = (Long) item.get(TRACK_ID_FIELD);
-                Long markerId = (Long) item.get(MARKER_ID_FIELD);
-                Intent intent = IntentUtils.newIntent(SearchListActivity.this, TrackRecordedActivity.class);
-                if (markerId != null) {
-                    intent = intent.putExtra(TrackRecordedActivity.EXTRA_MARKER_ID, markerId);
-                } else {
-                    intent = intent.putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
-                }
-                startActivity(intent);
+        listView.setOnItemClickListener((parent, view, position, id) -> {
+            Map<String, Object> item = arrayAdapter.getItem(position);
+            Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
+            Long markerId = (Long) item.get(MARKER_ID_FIELD);
+            Intent intent = IntentUtils.newIntent(SearchListActivity.this, TrackRecordedActivity.class);
+            if (markerId != null) {
+                intent = intent.putExtra(TrackRecordedActivity.EXTRA_MARKER_ID, markerId);
+            } else {
+                intent = intent.putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
             }
+            startActivity(intent);
         });
         ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
         handleIntent(getIntent());
@@ -275,22 +270,22 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
             return false;
         }
         Map<String, Object> item = arrayAdapter.getItem(positions[0]);
-        Long trackId = (Long) item.get(TRACK_ID_FIELD);
-        Long markerId = (Long) item.get(MARKER_ID_FIELD);
+        Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
+        Waypoint.Id waypointId = (Waypoint.Id) item.get(MARKER_ID_FIELD);
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
                 IntentUtils.showCoordinateOnMap(this, (double) item.get(MARKER_LATITUDE_FIELD), (double) item.get(MARKER_LONGITUDE_FIELD), item.get(NAME_FIELD) + "");
                 return true;
             case R.id.list_context_menu_share:
-                intent = IntentUtils.newShareFileIntent(this, new long[]{trackId});
+                intent = IntentUtils.newShareFileIntent(this, trackId);
                 intent = Intent.createChooser(intent, null);
                 startActivity(intent);
                 return true;
             case R.id.list_context_menu_edit:
-                if (markerId != null) {
+                if (waypointId != null) {
                     intent = IntentUtils.newIntent(this, MarkerEditActivity.class)
-                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, markerId);
+                            .putExtra(MarkerEditActivity.EXTRA_MARKER_ID, waypointId);
                 } else {
                     intent = IntentUtils.newIntent(this, TrackEditActivity.class)
                             .putExtra(TrackEditActivity.EXTRA_TRACK_ID, trackId);
@@ -301,10 +296,10 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                 finish();
                 return true;
             case R.id.list_context_menu_delete:
-                if (markerId != null) {
-                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), new long[]{markerId});
+                if (waypointId != null) {
+                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), waypointId);
                 } else {
-                    deleteTracks(new long[]{trackId});
+                    deleteTracks(trackId);
                 }
                 return true;
             default:
@@ -336,7 +331,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
      * @param textQuery the query
      */
     private void doSearch(String textQuery) {
-        SearchQuery query = new SearchQuery(textQuery, null, -1L, System.currentTimeMillis());
+        SearchQuery query = new SearchQuery(textQuery, null, null, System.currentTimeMillis());
         SortedSet<ScoredResult> scoredResults = searchEngine.search(query);
         final List<Map<String, Object>> displayResults = prepareResultsforDisplay(scoredResults);
 
@@ -377,8 +372,8 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
 
         //TODO: It may be more appropriate to obtain the track name as a join in the retrieval phase of the searchable.
         String trackName = null;
-        long trackId = waypoint.getTrackId();
-        if (trackId != -1L) {
+        Track.Id trackId = waypoint.getTrackId();
+        if (!trackId.isValid()) {
             Track track = contentProviderUtils.getTrack(trackId);
             if (track != null) {
                 trackName = track.getName();

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

@@ -8,6 +8,9 @@ import android.util.Pair;
 
 import androidx.appcompat.app.AppCompatActivity;
 
+import java.util.Set;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.provider.ShareContentProvider;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
@@ -18,7 +21,7 @@ import de.dennisguse.opentracks.util.IntentDashboardUtils;
  */
 public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
 
-    private TrackFileFormat trackFileFormat;
+    private final TrackFileFormat trackFileFormat;
 
     protected ShowOnMapProxyActivity(TrackFileFormat trackFileFormat) {
         this.trackFileFormat = trackFileFormat;
@@ -26,7 +29,7 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
 
     protected void onCreate(final Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        long[] trackIds = IntentDashboardUtils.extractTrackIdsFromIntent(getIntent());
+        Set<Track.Id> trackIds = IntentDashboardUtils.extractTrackIdsFromIntent(getIntent());
 
         showTrackTrackfileFormat(this, trackFileFormat, trackIds);
 
@@ -39,14 +42,14 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
      * @param context  the context
      * @param trackIds the track ids
      */
-    private static void showTrackTrackfileFormat(Context context, TrackFileFormat trackFileFormat, long[] trackIds) {
-        if (trackIds.length == 0) {
+    private static void showTrackTrackfileFormat(Context context, TrackFileFormat trackFileFormat, Set<Track.Id> trackIds) {
+        if (trackIds.size() == 0) {
             return;
         }
 
         Intent intent = new Intent(android.content.Intent.ACTION_VIEW);
         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-        intent.putExtra(TrackPointsColumns.TRACKID, trackIds[0]);
+        intent.putExtra(TrackPointsColumns.TRACKID, trackIds.toArray(new Track.Id[0])[0]);
         Pair<Uri, String> uriAndMime = ShareContentProvider.createURI(trackIds, "SharingTrack", trackFileFormat);
         intent.setDataAndType(uriAndMime.first, uriAndMime.second);
 

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

@@ -4,6 +4,8 @@ import android.app.Application;
 import android.os.StrictMode;
 import android.util.Log;
 
+import java.util.Locale;
+
 import de.dennisguse.opentracks.util.PreferencesUtils;
 
 /**
@@ -25,7 +27,16 @@ public class Startup extends Application {
 
         //Set default values of preferences on first start.
         PreferencesUtils.resetPreferences(this, false);
+        if (PreferencesUtils.getString(this, R.string.stats_units_key, "").equals("")) {
+            String statsUnits = getString(Locale.US.equals(Locale.getDefault()) ? R.string.stats_units_imperial : R.string.stats_units_metric);
+            PreferencesUtils.setString(this, R.string.stats_units_key, statsUnits);
+        }
 
+        //TODO Workaround to reset recordingTrackId on app startup as the TrackRecordingService (likely) crashed.
+        if (PreferencesUtils.isRecording(this)) {
+            Log.e(TAG, "Reset recordingTrackId; likely the TrackRecordingService crashed.");
+            PreferencesUtils.setLong(this, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        }
 
         //In debug builds: show thread and VM warnings.
         if (BuildConfig.DEBUG) {

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

@@ -16,15 +16,24 @@
 
 package de.dennisguse.opentracks;
 
+import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.graphics.drawable.AnimatedVectorDrawable;
+import android.graphics.drawable.Drawable;
 import android.os.Handler;
+import android.view.Gravity;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.ImageButton;
 import android.widget.TextView;
+import android.widget.Toast;
+
+import androidx.core.content.ContextCompat;
 
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 
@@ -46,12 +55,12 @@ public class TrackController {
     private final ImageButton recordImageButton;
     private final ImageButton stopImageButton;
     private final boolean alwaysShow;
+    private ButtonDelay buttonDelay;
 
     private boolean isRecording;
     private boolean isPaused;
     private long totalTime = 0;
 
-    // the timestamp for the toal time
     private long totalTimeTimestamp = 0;
 
     private boolean isResumed = false;
@@ -66,6 +75,7 @@ public class TrackController {
         }
     };
 
+    @SuppressLint("ClickableViewAccessibility")
     TrackController(Activity activity, TrackRecordingServiceConnection trackRecordingServiceConnection, boolean alwaysShow, OnClickListener recordListener, OnClickListener stopListener) {
         this.activity = activity;
         this.trackRecordingServiceConnection = trackRecordingServiceConnection;
@@ -76,10 +86,91 @@ public class TrackController {
         totalTimeTextView = activity.findViewById(R.id.track_controller_total_time);
 
         recordImageButton = activity.findViewById(R.id.track_controller_record);
-        recordImageButton.setOnClickListener(recordListener);
+        recordImageButton.setOnTouchListener((view, motionEvent) -> onRecordTouch(activity, recordListener, motionEvent));
 
         stopImageButton = activity.findViewById(R.id.track_controller_stop);
-        stopImageButton.setOnClickListener(stopListener);
+        stopImageButton.setOnTouchListener((view, motionEvent) -> onStopTouch(activity, stopListener, motionEvent));
+    }
+
+    private boolean onRecordTouch(final Activity activity, final OnClickListener recordListener, final MotionEvent motionEvent) {
+        if (isRecording && !isPaused) {
+            if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+                buttonDelay = new ButtonDelay(activity, recordImageButton, R.drawable.ic_button_pause_anim, R.string.hold_to_pause, recordListener);
+                new Thread(buttonDelay).start();
+                return true;
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP ) {
+                recordImageButton.setImageResource(R.drawable.ic_button_pause);
+                if (buttonDelay != null) {
+                    buttonDelay.canceled = true;
+                }
+                return true;
+            }
+        } else if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+            recordListener.onClick(null);
+            return true;
+        }
+        return false;
+    }
+
+    private boolean onStopTouch(final Activity activity, final OnClickListener stopListener, final MotionEvent motionEvent) {
+        if (isRecording) {
+            if (motionEvent.getAction() == MotionEvent.ACTION_DOWN) {
+                buttonDelay = new ButtonDelay(activity, stopImageButton, R.drawable.ic_button_stop_anim, R.string.hold_to_stop, stopListener);
+                new Thread(buttonDelay).start();
+                return true;
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP ) {
+                stopImageButton.setImageResource(R.drawable.ic_button_stop);
+                if (buttonDelay != null) {
+                    buttonDelay.canceled = true;
+                }
+                return true;
+            }
+        }
+        return false;
+    }
+
+    private static class ButtonDelay implements Runnable {
+
+        private boolean canceled = false;
+
+        private final ImageButton imageButton;
+        private final Activity activity;
+        private final OnClickListener clickListener;
+        private final int delayMillis;
+        private final Drawable drawable;
+        private final int delayMessageId;
+
+        private ButtonDelay(final Activity activity, final ImageButton imageButton, final int animDrawableId, final int delayMessageId, final OnClickListener clickListener) {
+            this.activity = activity;
+            this.clickListener = clickListener;
+            this.delayMillis = activity.getResources().getInteger(R.integer.buttonDelayMillis);
+            this.imageButton = imageButton;
+            this.drawable = ContextCompat.getDrawable(activity, animDrawableId);
+            this.delayMessageId = delayMessageId;
+        }
+
+        @Override
+        public void run() {
+            activity.runOnUiThread(()->{
+                imageButton.setImageDrawable(drawable);
+                if (drawable instanceof AnimatedVectorDrawable) {
+                    ((AnimatedVectorDrawable) drawable).start();
+                }
+                ActivityUtils.vibrate(activity, 150);
+                ActivityUtils.toast(activity, delayMessageId, Toast.LENGTH_SHORT, Gravity.TOP);
+            });
+
+            try {
+                Thread.sleep(delayMillis);
+            } catch (InterruptedException ignored) {
+            }
+            if (!canceled) {
+                activity.runOnUiThread(()-> {
+                    clickListener.onClick(null);
+                    ActivityUtils.vibrate(activity, 1000);
+                });
+            }
+        }
     }
 
     public void update(boolean recording, boolean paused) {
@@ -96,10 +187,10 @@ public class TrackController {
             return;
         }
 
-        recordImageButton.setImageResource(isRecording && !isPaused ? R.drawable.button_pause : R.drawable.button_record);
+        recordImageButton.setImageResource(isRecording && !isPaused ? R.drawable.ic_button_pause : R.drawable.button_record);
         recordImageButton.setContentDescription(activity.getString(isRecording && !isPaused ? R.string.image_pause : R.string.image_record));
 
-        stopImageButton.setImageResource(isRecording ? R.drawable.button_stop : R.drawable.ic_button_stop_disabled);
+        stopImageButton.setImageResource(isRecording ? R.drawable.ic_button_stop : R.drawable.ic_button_stop_disabled);
         stopImageButton.setEnabled(isRecording);
 
         statusTextView.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);

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

@@ -16,26 +16,29 @@
 
 package de.dennisguse.opentracks;
 
-import android.app.Activity;
-import android.app.Dialog;
-import android.content.DialogInterface;
 import android.content.Intent;
 import android.os.Bundle;
+import android.os.PowerManager;
+import android.view.View;
 
-import de.dennisguse.opentracks.util.DialogUtils;
+import java.util.List;
+
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.util.SystemUtils;
 
 /**
- * An activity for delete tracks.
+ * An activity for deleting tracks.
  *
  * @author Jimmy Shih
  */
-public class TrackDeleteActivity extends Activity {
+public class TrackDeleteActivity extends AbstractActivity {
 
     public static final String EXTRA_TRACK_IDS = "track_ids";
 
-    private static final int DIALOG_PROGRESS_ID = 0;
+    private List<Track.Id> trackIds;
 
-    private DeleteAsyncTask deleteAsyncTask;
+    private Thread deleteThread;
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -44,53 +47,48 @@ public class TrackDeleteActivity extends Activity {
         setResult(RESULT_CANCELED);
 
         Intent intent = getIntent();
-        long[] trackIds = intent.getLongArrayExtra(EXTRA_TRACK_IDS);
+        trackIds = intent.getParcelableArrayListExtra(EXTRA_TRACK_IDS);
+        deleteThread = new Thread(() -> {
+            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(TrackDeleteActivity.this);
 
-        Object retained = getLastNonConfigurationInstance();
-        if (retained instanceof DeleteAsyncTask) {
-            deleteAsyncTask = (DeleteAsyncTask) retained;
-            deleteAsyncTask.setActivity(this);
-        } else {
-            deleteAsyncTask = new DeleteAsyncTask(this, trackIds);
-            deleteAsyncTask.execute();
-        }
+            PowerManager.WakeLock wakeLock = SystemUtils.acquireWakeLock(TrackDeleteActivity.this, null);
+
+            for (Track.Id id : trackIds) {
+                if (Thread.interrupted()) {
+                    break;
+                }
+                contentProviderUtils.deleteTrack(TrackDeleteActivity.this, id);
+            }
+
+            wakeLock = SystemUtils.releaseWakeLock(wakeLock);
+            if (Thread.interrupted()) {
+                return;
+            }
+
+            runOnUiThread(TrackDeleteActivity.this::onAsyncTaskCompleted);
+        });
     }
 
     @Override
-    public Object onRetainNonConfigurationInstance() {
-        deleteAsyncTask.setActivity(null);
-        return deleteAsyncTask;
+    protected void onStart() {
+        super.onStart();
+        deleteThread.start();
     }
 
     @Override
-    protected Dialog onCreateDialog(int id) {
-        if (id != DIALOG_PROGRESS_ID) {
-            return null;
-        }
-        return DialogUtils.createSpinnerProgressDialog(
-                this, R.string.track_delete_progress_message, new DialogInterface.OnCancelListener() {
-                    @Override
-                    public void onCancel(DialogInterface dialog) {
-                        deleteAsyncTask.cancel(true);
-                        dialog.dismiss();
-                        finish();
-                    }
-                });
+    protected void onStop() {
+        super.onStop();
+        deleteThread.interrupt();
+    }
+
+    @Override
+    protected int getLayoutResId() {
+        return R.layout.track_delete;
     }
 
-    /**
-     * Invokes when the associated AsyncTask completes.
-     */
     public void onAsyncTaskCompleted() {
-        removeDialog(DIALOG_PROGRESS_ID);
+        findViewById(R.id.progressbar).setVisibility(View.INVISIBLE);
         setResult(RESULT_OK);
         finish();
     }
-
-    /**
-     * Shows the progress dialog.
-     */
-    public void showProgressDialog() {
-        showDialog(DIALOG_PROGRESS_ID);
-    }
 }

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

@@ -21,7 +21,6 @@ import android.util.Log;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
-import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.Button;
@@ -65,9 +64,9 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
     protected void onCreate(Bundle bundle) {
         super.onCreate(bundle);
 
-        trackRecordingServiceConnection = new TrackRecordingServiceConnection(null);
-        long trackId = getIntent().getLongExtra(EXTRA_TRACK_ID, -1L);
-        if (trackId == -1L) {
+        trackRecordingServiceConnection = new TrackRecordingServiceConnection();
+        Track.Id trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
+        if (!trackId.isValid()) {
             Log.e(TAG, "invalid trackId");
             finish();
             return;
@@ -89,20 +88,12 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
 
         ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
         activityType.setAdapter(adapter);
-        activityType.setOnItemClickListener(new AdapterView.OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+        activityType.setOnItemClickListener((parent, view, position, id) -> setActivityTypeIcon(TrackIconUtils.getIconValue(
+                TrackEditActivity.this, (String) activityType.getAdapter().getItem(position))));
+        activityType.setOnFocusChangeListener((v, hasFocus) -> {
+            if (!hasFocus) {
                 setActivityTypeIcon(TrackIconUtils.getIconValue(
-                        TrackEditActivity.this, (String) activityType.getAdapter().getItem(position)));
-            }
-        });
-        activityType.setOnFocusChangeListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if (!hasFocus) {
-                    setActivityTypeIcon(TrackIconUtils.getIconValue(
-                            TrackEditActivity.this, activityType.getText().toString()));
-                }
+                        TrackEditActivity.this, activityType.getText().toString()));
             }
         });
 
@@ -116,37 +107,28 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
 
         activityTypeIcon = findViewById(R.id.track_edit_activity_type_icon);
         activityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(this, iconValue));
-        activityTypeIcon.setOnTouchListener(new View.OnTouchListener() {
-            @Override
-            public boolean onTouch(View v, MotionEvent event) {
-                if (event.getAction() == MotionEvent.ACTION_UP) {
-                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
-                }
-                return true;
+        activityTypeIcon.setOnTouchListener((v, event) -> {
+            if (event.getAction() == MotionEvent.ACTION_UP) {
+                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
             }
+            return true;
         });
-        activityTypeIcon.setOnKeyListener(new View.OnKeyListener() {
-            @Override
-            public boolean onKey(View v, int keyCode, KeyEvent event) {
-                if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
-                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
-                }
-                return true;
+        activityTypeIcon.setOnKeyListener((v, keyCode, event) -> {
+            if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
+                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
             }
+            return true;
         });
 
         description = findViewById(R.id.track_edit_description);
         description.setText(track.getDescription());
 
         Button saveButton = findViewById(R.id.track_edit_save);
-        saveButton.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                TrackUtils.updateTrack(TrackEditActivity.this, track, nameEditText.getText().toString(),
-                        activityType.getText().toString(), description.getText().toString(),
-                        contentProviderUtils);
-                finish();
-            }
+        saveButton.setOnClickListener(v -> {
+            TrackUtils.updateTrack(TrackEditActivity.this, track, nameEditText.getText().toString(),
+                    activityType.getText().toString(), description.getText().toString(),
+                    contentProviderUtils);
+            finish();
         });
 
         Button cancel = findViewById(R.id.track_edit_cancel);
@@ -155,12 +137,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
             cancel.setVisibility(View.GONE);
         } else {
             setTitle(R.string.menu_edit);
-            cancel.setOnClickListener(new View.OnClickListener() {
-                @Override
-                public void onClick(View v) {
-                    finish();
-                }
-            });
+            cancel.setOnClickListener(v -> finish());
             cancel.setVisibility(View.VISIBLE);
         }
     }

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

@@ -24,6 +24,7 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.content.pm.PackageManager;
 import android.database.Cursor;
+import android.graphics.drawable.AnimatedVectorDrawable;
 import android.location.LocationManager;
 import android.os.Bundle;
 import android.provider.Settings;
@@ -33,8 +34,6 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
 import android.widget.Toast;
 
@@ -44,26 +43,23 @@ import androidx.core.app.ActivityCompat;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
-import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;
 
-import java.util.Locale;
-
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
+import de.dennisguse.opentracks.services.handlers.GpsStatusValue;
 import de.dennisguse.opentracks.settings.SettingsActivity;
 import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentDashboardUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.ServiceUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
-import de.dennisguse.opentracks.util.TrackUtils;
 
 /**
  * An activity displaying a list of tracks.
@@ -74,10 +70,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     private static final String TAG = TrackListActivity.class.getSimpleName();
 
-    private static final String[] PROJECTION = new String[]{TracksColumns._ID, TracksColumns.NAME,
-            TracksColumns.DESCRIPTION, TracksColumns.CATEGORY, TracksColumns.STARTTIME,
-            TracksColumns.TOTALDISTANCE, TracksColumns.TOTALTIME, TracksColumns.ICON};
-
     // The following are set in onCreate
     private ContentProviderUtils contentProviderUtils;
     private SharedPreferences sharedPreferences;
@@ -85,12 +77,12 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     private TrackController trackController;
     private ListView listView;
     private ResourceCursorAdapter resourceCursorAdapter;
+    private GpsStatusValue gpsStatusValue;
 
     private final LoaderCallbacks<Cursor> loaderCallbacks = new LoaderCallbacks<Cursor>() {
         @Override
         public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-            return new CursorLoader(TrackListActivity.this, TracksColumns.CONTENT_URI, PROJECTION, null,
-                    null, TrackUtils.TRACK_SORT_ORDER);
+            return ContentProviderUtils.getTracksCursorLoader(TrackListActivity.this);
         }
 
         @Override
@@ -106,7 +98,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     // Preferences
     private boolean metricUnits = true;
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    private Track.Id recordingTrackId = null;
 
     // Callback when an item is selected in the contextual action mode
     private final ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
@@ -127,8 +119,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     private boolean recordingTrackPaused;
 
-    private final OnSharedPreferenceChangeListener
-            sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
+    private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
             if (PreferencesUtils.isKey(TrackListActivity.this, R.string.stats_units_key, key)) {
@@ -166,28 +157,37 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         }
     };
 
-    private boolean startGps = false; // true to start gps
-
     // Callback when the trackRecordingServiceConnection binding changes.
     private final Runnable bindChangedCallback = new Runnable() {
         @Override
         public void run() {
-            // After binding changes (e.g., becomes available), update the total time in trackController.
-            runOnUiThread(() -> trackController.update(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused));
+            boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
 
-            if (!startGps) {
-                return;
-            }
+            // After binding changes (e.g., becomes available), update the total time in trackController.
+            runOnUiThread(() -> trackController.update(isRecording, recordingTrackPaused));
 
             TrackRecordingServiceInterface service = trackRecordingServiceConnection.getServiceIfBound();
             if (service == null) {
                 Log.d(TAG, "service not available to start gps or a new recording");
+                gpsStatusValue = GpsStatusValue.GPS_NONE;
                 return;
             }
-            if (startGps) {
-                service.startGps();
-                startGps = false;
+
+            // Get GPS status and listen GPS status changes.
+            gpsStatusValue = service.getGpsStatus();
+            updateGpsMenuItem(true, isRecording);
+            service.addListener(newStatus -> {
+                gpsStatusValue = newStatus;
+                updateGpsMenuItem(true, isRecording);
+            });
+
+            if (isGpsStarted()) {
+                return;
             }
+
+            service.startGps();
+            gpsStatusValue = GpsStatusValue.GPS_ENABLED;
+            updateGpsMenuItem(true, isRecording);
         }
     };
 
@@ -216,6 +216,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        gpsStatusValue = GpsStatusValue.GPS_NONE;
+
         recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
 
         contentProviderUtils = new ContentProviderUtils(this);
@@ -229,31 +231,23 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         // Show trackController when search dialog is dismissed
         SearchManager searchManager = (SearchManager) getSystemService(SEARCH_SERVICE);
         if (searchManager != null) {
-            searchManager.setOnDismissListener(new SearchManager.OnDismissListener() {
-                @Override
-                public void onDismiss() {
-                    trackController.show();
-                }
-            });
+            searchManager.setOnDismissListener(() -> trackController.show());
         }
 
         listView = findViewById(R.id.track_list);
         listView.setEmptyView(findViewById(R.id.track_list_empty_view));
-        listView.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View view, int position, long trackId) {
-                Intent newIntent;
-                if (trackId == recordingTrackId) {
-                    // Is recording -> open record activity.
-                    newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordingActivity.class)
-                            .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
-                } else {
-                    // Not recording -> open detail activity.
-                    newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordedActivity.class)
-                            .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, trackId);
-                }
-                startActivity(newIntent);
+        listView.setOnItemClickListener((parent, view, position, trackId) -> {
+            Intent newIntent;
+            if (trackId == recordingTrackId.getId()) {
+                // Is recording -> open record activity.
+                newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordingActivity.class)
+                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, new Track.Id(trackId));
+            } else {
+                // Not recording -> open detail activity.
+                newIntent = IntentUtils.newIntent(TrackListActivity.this, TrackRecordedActivity.class)
+                        .putExtra(TrackRecordedActivity.EXTRA_TRACK_ID, new Track.Id(trackId));
             }
+            startActivity(newIntent);
         });
 
         resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.list_item, null, 0) {
@@ -268,7 +262,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 int categoryIndex = cursor.getColumnIndex(TracksColumns.CATEGORY);
                 int descriptionIndex = cursor.getColumnIndex(TracksColumns.DESCRIPTION);
 
-                long trackId = cursor.getLong(idIndex);
+                Track.Id trackId = new Track.Id(cursor.getLong(idIndex));
                 boolean isRecording = trackId == recordingTrackId;
                 String icon = cursor.getString(iconIndex);
                 int iconId = TrackIconUtils.getIconDrawable(icon);
@@ -290,7 +284,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
 
         LoaderManager.getInstance(this).initLoader(0, null, loaderCallbacks);
-        showStartupDialogs();
+
+        requestGPSPermissions();
     }
 
     @Override
@@ -357,7 +352,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
 
     @Override
     public boolean onPrepareOptionsMenu(Menu menu) {
-        boolean isGpsStarted = ServiceUtils.isTrackRecordingServiceRunning(this);
+        boolean isGpsStarted = isGpsStarted();
         boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
         updateMenuItems(isGpsStarted, isRecording);
 
@@ -377,10 +372,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                     intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
                     startActivity(intent);
                 } else {
-                    startGps = !ServiceUtils.isTrackRecordingServiceRunning(this);
-
                     // Invoke trackRecordingService
-                    if (startGps) {
+                    if (!isGpsStarted()) {
                         trackRecordingServiceConnection.startAndBind(this);
                         bindChangedCallback.run();
                     } else {
@@ -436,17 +429,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
         // Do nothing
     }
 
-    /**
-     * Shows start up dialogs.
-     */
-    private void showStartupDialogs() {
-        // If stats_units_key is undefined, set it
-        if (PreferencesUtils.getString(this, R.string.stats_units_key, "").equals("")) {
-            String statsUnits = getString(Locale.US.equals(Locale.getDefault()) ? R.string.stats_units_imperial : R.string.stats_units_metric);
-            PreferencesUtils.setString(this, R.string.stats_units_key, statsUnits);
-        }
-
-        requestGPSPermissions();
+    private boolean isGpsStarted() {
+        return gpsStatusValue != GpsStatusValue.GPS_NONE && gpsStatusValue != GpsStatusValue.GPS_DISABLED;
     }
 
     private void requestGPSPermissions() {
@@ -456,17 +440,30 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     }
 
     /**
-     * Updates the menu items.
+     * Updates the menu items with not fixed icon for gps option.
      *
      * @param isGpsStarted true if gps is started
      * @param isRecording  true if recording
      */
     private void updateMenuItems(boolean isGpsStarted, boolean isRecording) {
+        updateGpsMenuItem(isGpsStarted, isRecording);
+    }
+
+    /**
+     * Updates the menu items with the icon specified.
+     *
+     * @param isGpsStarted true if gps is started
+     * @param isRecording  true if recording
+     */
+    private void updateGpsMenuItem(boolean isGpsStarted, boolean isRecording) {
         if (startGpsMenuItem != null) {
             startGpsMenuItem.setVisible(!isRecording);
             if (!isRecording) {
                 startGpsMenuItem.setTitle(isGpsStarted ? R.string.menu_stop_gps : R.string.menu_start_gps);
-                startGpsMenuItem.setIcon(isGpsStarted ? R.drawable.ic_gps_fixed_24dp : R.drawable.ic_gps_off_24dp);
+                startGpsMenuItem.setIcon(isGpsStarted ? gpsStatusValue.icon : R.drawable.ic_gps_off_24dp);
+                if (startGpsMenuItem.getIcon() instanceof AnimatedVectorDrawable) {
+                    ((AnimatedVectorDrawable) startGpsMenuItem.getIcon()).start();
+                }
             }
         }
     }
@@ -474,15 +471,20 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
     /**
      * Handles a context item selection.
      *
-     * @param itemId   the menu item id
-     * @param trackIds the track ids
+     * @param itemId       the menu item id
+     * @param longTrackIds the track ids
      * @return true if handled.
      */
-    private boolean handleContextItem(int itemId, long[] trackIds) {
+    private boolean handleContextItem(int itemId, long... longTrackIds) {
+        Track.Id[] trackIds = new Track.Id[longTrackIds.length];
+        for (int i = 0; i < longTrackIds.length; i++) {
+            trackIds[i] = new Track.Id(longTrackIds[i]);
+        }
+
         Intent intent;
         switch (itemId) {
             case R.id.list_context_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, trackIds);
+                IntentDashboardUtils.startDashboard(this, false, trackIds);
                 return true;
             case R.id.list_context_menu_share:
                 intent = IntentUtils.newShareFileIntent(this, trackIds);
@@ -495,9 +497,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                 startActivity(intent);
                 return true;
             case R.id.list_context_menu_delete:
-                if (trackIds.length > 1 && trackIds.length == listView.getCount()) {
-                    trackIds = new long[]{-1L};
-                }
                 deleteTracks(trackIds);
                 return true;
             case R.id.list_context_menu_select_all:

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

@@ -66,7 +66,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
     private ViewPager pager;
 
     // From intent.
-    private long trackId;
+    private Track.Id trackId;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -133,7 +133,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
         // Update UI
         this.invalidateOptionsMenu();
 
-        if (trackId != -1L) {
+        if (trackId.isValid()) {
             trackDataHub.loadTrack(trackId);
         }
     }
@@ -182,12 +182,12 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
         Intent intent;
         switch (item.getItemId()) {
             case R.id.track_detail_share:
-                intent = IntentUtils.newShareFileIntent(this, new long[]{trackId});
+                intent = IntentUtils.newShareFileIntent(this, trackId);
                 intent = Intent.createChooser(intent, null);
                 startActivity(intent);
                 return true;
             case R.id.track_detail_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, trackId);
+                IntentDashboardUtils.startDashboard(this, false, trackId);
                 return true;
             case R.id.track_detail_markers:
                 intent = IntentUtils.newIntent(this, MarkerListActivity.class)
@@ -200,7 +200,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
                 startActivity(intent);
                 return true;
             case R.id.track_detail_delete:
-                deleteTracks(new long[]{trackId});
+                deleteTracks(trackId);
                 return true;
             case R.id.track_detail_resume_track:
                 Intent newIntent = IntentUtils.newIntent(TrackRecordedActivity.this, TrackRecordingActivity.class)
@@ -238,12 +238,12 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
     }
 
     private void handleIntent(Intent intent) {
-        trackId = intent.getLongExtra(EXTRA_TRACK_ID, -1L);
+        trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
 
-        long markerId = intent.getLongExtra(EXTRA_MARKER_ID, -1L);
-        if (markerId != -1L) {
+        Waypoint.Id waypointId = intent.getParcelableExtra(EXTRA_MARKER_ID);
+        if (waypointId != null) {
             // Use the trackId from the marker
-            Waypoint waypoint = contentProviderUtils.getWaypoint(markerId);
+            Waypoint waypoint = contentProviderUtils.getWaypoint(waypointId);
             if (waypoint == null) {
                 finish();
                 return;
@@ -251,7 +251,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
             trackId = waypoint.getTrackId();
         }
 
-        if (trackId == -1L) {
+        if (trackId == null) {
             Log.e(TAG, "TrackDetailActivity needs EXTRA_TRACK_ID.");
             finish();
         }

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

@@ -11,10 +11,10 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.WindowManager;
-import android.widget.Toast;
 
 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentPagerAdapter;
 import androidx.viewpager.widget.ViewPager;
 
@@ -41,6 +41,8 @@ import de.dennisguse.opentracks.util.TrackUtils;
  * @author Leif Hendrik Wilden
  * @author Rodrigo Damazio
  */
+//NOTE: This activity does NOT react to preference changes of R.string.recording_track_id_key.
+//This mode of communication should be removed anyhow.
 public class TrackRecordingActivity extends AbstractActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller, TrackActivityDataHubInterface {
 
     public static final String EXTRA_TRACK_ID = "track_id";
@@ -57,11 +59,10 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     private ViewPager pager;
     private TrackController trackController;
 
-    // From intent
-    private long trackId;
+    // Initialized from Intent; if a new track recording is started, a new TrackId will be provided by TrackRecordingService
+    private Track.Id trackId;
 
     // Preferences
-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
     private boolean recordingTrackPaused;
 
     private final Runnable bindChangedCallback = new Runnable() {
@@ -70,29 +71,22 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             // After binding changes (is available), update the total time in trackController.
             runOnUiThread(() -> trackController.update(true, recordingTrackPaused));
 
-            if (recordingTrackId == -1L) {
-                TrackRecordingServiceInterface service = trackRecordingServiceConnection.getServiceIfBound();
-                if (service == null) {
-                    Log.d(TAG, "could not get TrackRecordingService");
-                    return;
-                }
-
+            TrackRecordingServiceInterface service = trackRecordingServiceConnection.getServiceIfBound();
+            if (service == null) {
+                Log.d(TAG, "could not get TrackRecordingService");
+                return;
+            }
+            if (!service.isRecording()) {
                 // Starts or resumes a track.
-                int msg;
-                if (trackId == -1L) {
+                if (trackId == null) {
                     // trackId isn't initialized -> leads a new recording.
                     trackId = service.startNewTrack();
-                    recordingTrackId = trackId;
-                    msg = R.string.track_detail_record_success;
                 } else {
                     // trackId is initialized -> resumes the track.
-                    recordingTrackId = trackId;
                     service.resumeTrack(trackId);
-                    msg = R.string.track_detail_resume_success;
                 }
 
                 // A recording track is on.
-                Toast.makeText(TrackRecordingActivity.this, msg, Toast.LENGTH_SHORT).show();
                 trackDataHub.loadTrack(trackId);
                 trackController.update(true, false);
                 trackController.onResume(true, recordingTrackPaused);
@@ -103,12 +97,6 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     private final OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new OnSharedPreferenceChangeListener() {
         @Override
         public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.recording_track_id_key, key)) {
-                recordingTrackId = PreferencesUtils.getRecordingTrackId(TrackRecordingActivity.this);
-                setLockscreenPolicy();
-                setScreenOnPolicy();
-            }
-
             if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.recording_track_paused_key, key)) {
                 recordingTrackPaused = PreferencesUtils.isRecordingTrackPaused(TrackRecordingActivity.this);
                 setLockscreenPolicy();
@@ -122,6 +110,9 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
             if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.stats_keep_screen_on_while_recording_key, key)) {
                 setScreenOnPolicy();
             }
+            if (PreferencesUtils.isKey(TrackRecordingActivity.this, R.string.stats_fullscreen_while_recording_key, key)) {
+                setFullscreenPolicy();
+            }
 
             if (key == null) return;
 
@@ -168,52 +159,28 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
-
         contentProviderUtils = new ContentProviderUtils(this);
-        handleIntent(getIntent());
 
+        trackId = null;
+        if (savedInstanceState != null) {
+            //Activity was recreated.
+            trackId = savedInstanceState.getParcelable(EXTRA_TRACK_ID);
+        } else {
+            trackId = getIntent().getParcelableExtra(EXTRA_TRACK_ID);
+            if (trackId != null && contentProviderUtils.getTrack(trackId) == null) {
+                Log.w(TAG, "TrackId does not exists; cannot continue the recording.");
+                finish();
+            }
+        }
+
+        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
         sharedPreferences = PreferencesUtils.getSharedPreferences(this);
 
         trackRecordingServiceConnection = new TrackRecordingServiceConnection(bindChangedCallback);
         trackDataHub = new TrackDataHub(this);
 
-        FragmentPagerAdapter adapter = new FragmentPagerAdapter(getSupportFragmentManager(), 1) {
-            @Override
-            public int getCount() {
-                return 3;
-            }
-
-            @NonNull
-            @Override
-            public Fragment getItem(int position) {
-                switch (position) {
-                    case 0:
-                        return new StatisticsRecordingFragment();
-                    case 1:
-                        return ChartFragment.newInstance(false);
-                    case 2:
-                        return ChartFragment.newInstance(true);
-                    default:
-                        throw new RuntimeException("There isn't Fragment associated with the position: " + position);
-                }
-            }
-
-            @Override
-            public CharSequence getPageTitle(int position) {
-                switch (position) {
-                    case 0:
-                        return getString(R.string.track_detail_stats_tab);
-                    case 1:
-                        return getString(R.string.settings_chart_by_time);
-                    case 2:
-                        return getString(R.string.settings_chart_by_distance);
-                }
-                return "Unknown Tab";
-            }
-        };
         pager = findViewById(R.id.track_detail_activity_view_pager);
-        pager.setAdapter(adapter);
+        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), 1));
         TabLayout tabs = findViewById(R.id.track_detail_activity_tablayout);
         tabs.setupWithViewPager(pager);
         if (savedInstanceState != null) {
@@ -227,12 +194,12 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     public void onAttachedToWindow() {
         setLockscreenPolicy();
         setScreenOnPolicy();
+        setFullscreenPolicy();
         super.onAttachedToWindow();
     }
 
     private void setLockscreenPolicy() {
-        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackRecordingActivity.this)
-                && PreferencesUtils.isRecording(this);
+        boolean showOnLockScreen = PreferencesUtils.shouldShowStatsOnLockscreen(TrackRecordingActivity.this);
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
             setShowWhenLocked(showOnLockScreen);
@@ -244,8 +211,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
     }
 
     private void setScreenOnPolicy() {
-        boolean keepScreenOn = PreferencesUtils.shouldKeepScreenOn(TrackRecordingActivity.this)
-                && PreferencesUtils.isRecording(this);
+        boolean keepScreenOn = PreferencesUtils.shouldKeepScreenOn(TrackRecordingActivity.this);
 
         if (keepScreenOn) {
             getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
@@ -254,6 +220,16 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         }
     }
 
+    private void setFullscreenPolicy() {
+        boolean keepScreenOn = PreferencesUtils.shouldUseFullscreen(TrackRecordingActivity.this);
+
+        if (keepScreenOn) {
+            getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        } else {
+            getWindow().clearFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        }
+    }
+
     @Override
     protected void onStart() {
         super.onStart();
@@ -272,12 +248,25 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         // Update UI
         this.invalidateOptionsMenu();
 
-        if (trackId != -1L) {
+        if (trackId != null) {
             trackDataHub.loadTrack(trackId);
             trackController.onResume(true, recordingTrackPaused);
         }
 
-        startRecording();
+        /*
+         * If the binding has happened, then invoke the callback to start a new recording.
+         * If the binding hasn't happened, then invoking the callback will have no effect.
+         * But when the binding occurs, the callback will get invoked.
+         */
+        trackRecordingServiceConnection.startAndBind(this);
+        bindChangedCallback.run();
+    }
+
+    @Override
+    protected void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putInt(CURRENT_TAB_TAG_KEY, pager.getCurrentItem());
+        outState.putParcelable(EXTRA_TRACK_ID, trackId);
     }
 
     @Override
@@ -294,24 +283,11 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         trackDataHub.stop();
     }
 
-    @Override
-    protected void onSaveInstanceState(@NonNull Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putInt(CURRENT_TAB_TAG_KEY, pager.getCurrentItem());
-    }
-
     @Override
     protected int getLayoutResId() {
         return R.layout.track_record;
     }
 
-    @Override
-    public void onNewIntent(Intent intent) {
-        super.onNewIntent(intent);
-        setIntent(intent);
-        handleIntent(intent);
-    }
-
     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         getMenuInflater().inflate(R.menu.track_record, menu);
@@ -339,7 +315,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                 startActivity(intent);
                 return true;
             case R.id.track_detail_menu_show_on_map:
-                IntentDashboardUtils.startDashboard(this, trackId);
+                IntentDashboardUtils.startDashboard(this, true, trackId);
                 return true;
             case R.id.track_detail_markers:
                 intent = IntentUtils.newIntent(this, MarkerListActivity.class)
@@ -368,22 +344,6 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         return trackDataHub;
     }
 
-    private void handleIntent(Intent intent) {
-        trackId = intent.getLongExtra(EXTRA_TRACK_ID, -1L);
-        if (trackId == -1L) {
-            return;
-        }
-        Track track = contentProviderUtils.getTrack(trackId);
-        if (track == null) {
-            track = contentProviderUtils.getLastTrack();
-            if (track != null) {
-                trackId = track.getId();
-                return;
-            }
-            finish();
-        }
-    }
-
     /**
      * Updates the menu items.
      */
@@ -404,14 +364,44 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
         TrackUtils.updateTrack(this, track, null, category, null, contentProviderUtils);
     }
 
-    private void startRecording() {
-        trackRecordingServiceConnection.startAndBind(this);
+    private class CustomFragmentPagerAdapter extends FragmentPagerAdapter {
 
-        /*
-         * If the binding has happened, then invoke the callback to start a new recording.
-         * If the binding hasn't happened, then invoking the callback will have no effect.
-         * But when the binding occurs, the callback will get invoked.
-         */
-        bindChangedCallback.run();
+        public CustomFragmentPagerAdapter(@NonNull FragmentManager fm, int behavior) {
+            super(fm, behavior);
+        }
+
+        @Override
+        public int getCount() {
+            return 3;
+        }
+
+        @NonNull
+        @Override
+        public Fragment getItem(int position) {
+            switch (position) {
+                case 0:
+                    return new StatisticsRecordingFragment();
+                case 1:
+                    return ChartFragment.newInstance(false);
+                case 2:
+                    return ChartFragment.newInstance(true);
+                default:
+                    throw new RuntimeException("There isn't Fragment associated with the position: " + position);
+            }
+        }
+
+        @Override
+        public CharSequence getPageTitle(int position) {
+            switch (position) {
+                case 0:
+                    return getString(R.string.track_detail_stats_tab);
+                case 1:
+                    return getString(R.string.settings_chart_by_time);
+                case 2:
+                    return getString(R.string.settings_chart_by_distance);
+                default:
+                    throw new RuntimeException("There isn't Fragment associated with the position: " + position);
+            }
+        }
     }
 }

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

@@ -17,8 +17,8 @@ import de.dennisguse.opentracks.viewmodels.AggregatedStatistics;
 
 public class AggregatedStatisticsAdapter extends BaseAdapter {
 
-    private AggregatedStatistics aggregatedStatistics;
-    private Context context;
+    private final AggregatedStatistics aggregatedStatistics;
+    private final Context context;
 
     public AggregatedStatisticsAdapter(Context context, AggregatedStatistics aggregatedStatistics) {
         this.context = context;
@@ -83,12 +83,12 @@ public class AggregatedStatisticsAdapter extends BaseAdapter {
         protected TextView distanceUnit;
         protected TextView time;
         protected boolean metricsUnits;
-
-        public ViewHolder() {
-            metricsUnits = PreferencesUtils.isMetricUnits(context);
-        }
+        protected boolean reportSpeed;
 
         public void setValues(View view, int iconDrawable, String name, AggregatedStatistics.AggregatedStatistic aggregatedStats) {
+            reportSpeed = PreferencesUtils.isReportSpeed(context, name);
+            metricsUnits = PreferencesUtils.isMetricUnits(context);
+
             sportIcon = view.findViewById(R.id.aggregated_stats_sport_icon);
             typeLabel = view.findViewById(R.id.aggregated_stats_type_label);
             numTracks = view.findViewById(R.id.aggregated_stats_num_tracks);
@@ -128,14 +128,14 @@ public class AggregatedStatisticsAdapter extends BaseAdapter {
             maxSpeedLabel = view.findViewById(R.id.aggregated_stats_max_rate_label);
 
             {
-                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getAverageMovingSpeed(), metricsUnits, true);
+                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getAverageMovingSpeed(), metricsUnits, reportSpeed);
                 avgSpeed.setText(parts.first);
                 avgSpeedUnit.setText(parts.second);
                 avgSpeedLabel.setText(context.getString(R.string.stats_average_moving_speed));
             }
 
             {
-                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getMaxSpeed(), metricsUnits, true);
+                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getMaxSpeed(), metricsUnits, reportSpeed);
                 maxSpeed.setText(parts.first);
                 maxSpeedUnit.setText(parts.second);
                 maxSpeedLabel.setText(context.getString(R.string.stats_max_speed));
@@ -164,14 +164,14 @@ public class AggregatedStatisticsAdapter extends BaseAdapter {
             maxPaceLabel = view.findViewById(R.id.aggregated_stats_max_rate_label);
 
             {
-                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getAverageMovingSpeed(), metricsUnits, false);
+                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getAverageMovingSpeed(), metricsUnits, reportSpeed);
                 avgPace.setText(parts.first);
                 avgPaceUnit.setText(parts.second);
                 avgPaceLabel.setText(R.string.stats_average_moving_pace);
             }
 
             {
-                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getMaxSpeed(), metricsUnits, false);
+                Pair<String, String> parts = StringUtils.getSpeedParts(context, aggregatedStats.getTrackStatistics().getMaxSpeed(), metricsUnits, reportSpeed);
                 maxPace.setText(parts.first);
                 maxPaceUnit.setText(parts.second);
                 maxPaceLabel.setText(R.string.stats_fastest_pace);

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

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

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

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

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

@@ -108,28 +108,25 @@ public class SearchEngine {
     /**
      * Comparator for scored results.
      */
-    private static final Comparator<ScoredResult> SCORED_RESULT_COMPARATOR = new Comparator<ScoredResult>() {
-        @Override
-        public int compare(ScoredResult r1, ScoredResult r2) {
-            // Score ordering.
-            int scoreDiff = Double.compare(r2.score, r1.score);
-            if (scoreDiff != 0) {
-                return scoreDiff;
-            }
-
-            // Make tracks come before waypoints.
-            if (r1.waypoint != null && r2.track != null) {
-                return 1;
-            } else if (r1.track != null && r2.waypoint != null) {
-                return -1;
-            }
-
-            // Finally, use arbitrary ordering, by ID.
-            long id1 = r1.track != null ? r1.track.getId() : r1.waypoint.getId();
-            long id2 = r2.track != null ? r2.track.getId() : r2.waypoint.getId();
-            long idDiff = id2 - id1;
-            return Long.signum(idDiff);
+    private static final Comparator<ScoredResult> SCORED_RESULT_COMPARATOR = (r1, r2) -> {
+        // Score ordering.
+        int scoreDiff = Double.compare(r2.score, r1.score);
+        if (scoreDiff != 0) {
+            return scoreDiff;
         }
+
+        // Make tracks come before waypoints.
+        if (r1.waypoint != null && r2.track != null) {
+            return 1;
+        } else if (r1.track != null && r2.waypoint != null) {
+            return -1;
+        }
+
+        // Finally, use arbitrary ordering, by ID.
+        long id1 = r1.track != null ? r1.track.getId().getId() : r1.waypoint.getId().getId();
+        long id2 = r2.track != null ? r2.track.getId().getId() : r2.waypoint.getId().getId();
+        long idDiff = id2 - id1;
+        return Long.signum(idDiff);
     };
 
     private final ContentProviderUtils providerUtils;
@@ -293,7 +290,7 @@ public class SearchEngine {
         score *= getTimeBoost(query, location.getTime());
 
         // Score waypoints in the currently-selected track higher (searching inside the current track).
-        if (query.currentTrackId != -1 && waypoint.getTrackId() == query.currentTrackId) {
+        if (waypoint.getTrackId() != null && waypoint.getTrackId().equals(query.currentTrackId)) {
             score *= CURRENT_TRACK_WAYPOINT_PROMOTION;
         }
 
@@ -385,10 +382,10 @@ public class SearchEngine {
     public static class SearchQuery {
         final String textQuery;
         final Location currentLocation;
-        final long currentTrackId;
+        final Track.Id currentTrackId;
         final long currentTimestamp;
 
-        public SearchQuery(String textQuery, Location currentLocation, long currentTrackId, long currentTimestamp) {
+        public SearchQuery(String textQuery, Location currentLocation, Track.Id currentTrackId, long currentTimestamp) {
             this.textQuery = textQuery.toLowerCase(Locale.getDefault());
             this.currentLocation = currentLocation;
             this.currentTrackId = currentTrackId;
@@ -420,8 +417,8 @@ public class SearchEngine {
         @Override
         public String toString() {
             return "ScoredResult ["
-                    + (track != null ? ("trackId=" + track.getId() + ", ") : "")
-                    + (waypoint != null ? ("wptId=" + waypoint.getId() + ", ") : "")
+                    + (track != null ? ("trackId=" + track.getId().getId() + ", ") : "")
+                    + (waypoint != null ? ("wptId=" + waypoint.getId().getId() + ", ") : "")
                     + "score=" + score + "]";
         }
     }

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

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

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

@@ -16,7 +16,17 @@
 
 package de.dennisguse.opentracks.content.data;
 
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.Objects;
+import java.util.UUID;
+
 import de.dennisguse.opentracks.stats.TrackStatistics;
+import de.dennisguse.opentracks.util.PreferencesUtils;
 
 /**
  * A track.
@@ -26,7 +36,9 @@ import de.dennisguse.opentracks.stats.TrackStatistics;
  */
 public class Track {
 
-    private long id = -1L;
+    private Track.Id id;
+    private UUID uuid = UUID.randomUUID();
+
     private String name = "";
     private String description = "";
     private String category = "";
@@ -38,14 +50,26 @@ public class Track {
     public Track() {
     }
 
-    public long getId() {
+    /**
+     * May be null if the track was not loaded from the database.
+     */
+    public @Nullable
+    Id getId() {
         return id;
     }
 
-    public void setId(long id) {
+    public void setId(Id id) {
         this.id = id;
     }
 
+    public UUID getUuid() {
+        return uuid;
+    }
+
+    public void setUuid(UUID uuid) {
+        this.uuid = uuid;
+    }
+
     public String getName() {
         return name;
     }
@@ -85,4 +109,66 @@ public class Track {
     public void setTrackStatistics(TrackStatistics trackStatistics) {
         this.trackStatistics = trackStatistics;
     }
+
+    public static class Id implements Parcelable {
+
+        private final long id;
+
+        public Id(long id) {
+            this.id = id;
+        }
+
+        public Id(@NonNull String id) {
+            this(Long.parseLong(id));
+        }
+
+        //TOOD Limit visibility to TrackRecordingService / ContentProvider
+        public long getId() {
+            return id;
+        }
+
+        @Deprecated //TODO Use a Track.Id of null instead
+        public boolean isValid() {
+            return id != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            Id id1 = (Id) o;
+            return id == id1.id;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(id);
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @NonNull
+        @Override
+        public String toString() {
+            throw new RuntimeException("Not supported");
+        }
+
+        @Override
+        public void writeToParcel(Parcel parcel, int i) {
+            parcel.writeLong(id);
+        }
+
+        public static final Parcelable.Creator<Track.Id> CREATOR = new Parcelable.Creator<Track.Id>() {
+            public Track.Id createFromParcel(Parcel in) {
+                return new Track.Id(in.readLong());
+            }
+
+            public Track.Id[] newArray(int size) {
+                return new Track.Id[size];
+            }
+        };
+    }
 }

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

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

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

@@ -32,9 +32,10 @@ public interface TracksColumns extends BaseColumns {
     Uri CONTENT_URI = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME);
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.track";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.track";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
+    String UUID = "uuid";
     String NAME = "name"; // track name
     String DESCRIPTION = "description"; // track description
     String CATEGORY = "category"; // track activity type
@@ -71,5 +72,9 @@ public interface TracksColumns extends BaseColumns {
             + MINELEVATION + " FLOAT, " // min elevation
             + MAXELEVATION + " FLOAT, " // max elevation
             + ELEVATIONGAIN + " FLOAT, " // elevation gain
-            + ICON + " TEXT)"; // icon
+            + ICON + " TEXT, " // icon
+            + UUID + " BLOB)"; // UUID
+
+    String CREATE_TABLE_INDEX = "CREATE UNIQUE INDEX " + TABLE_NAME + "_" + UUID + "_index ON " + TABLE_NAME + "(" + UUID + ")";
+
 }

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

@@ -18,10 +18,17 @@ package de.dennisguse.opentracks.content.data;
 
 import android.location.Location;
 import android.net.Uri;
+import android.os.Parcel;
+import android.os.Parcelable;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
 
+import java.util.Objects;
+
+import de.dennisguse.opentracks.util.PreferencesUtils;
+
 /**
  * A waypoint.
  *
@@ -30,15 +37,16 @@ import androidx.annotation.VisibleForTesting;
  */
 public final class Waypoint {
 
-    private long id = -1L;
+    private Id id;
     private String name = "";
     private String description = "";
     private String category = "";
     private String icon = "";
-    private long trackId = -1L;
+    private Track.Id trackId;
     private double length = 0.0;
     private long duration = 0;
     private Location location;
+    @Deprecated //TODO Make an URI instead of String
     private String photoUrl = "";
 
     @VisibleForTesting
@@ -50,7 +58,7 @@ public final class Waypoint {
         this.location = location;
     }
 
-    public Waypoint(String name, String description, String category, String icon, long trackId, double length, long duration, @NonNull Location location, String photoUrl) {
+    public Waypoint(String name, String description, String category, String icon, @NonNull Track.Id trackId, double length, long duration, @NonNull Location location, String photoUrl) {
         this.name = name;
         this.description = description;
         this.category = category;
@@ -62,11 +70,15 @@ public final class Waypoint {
         this.photoUrl = photoUrl;
     }
 
-    public long getId() {
+    /**
+     * May be null if the waypoint was not loaded from the database.
+     */
+    public @Nullable
+    Id getId() {
         return id;
     }
 
-    public void setId(long id) {
+    public void setId(Id id) {
         this.id = id;
     }
 
@@ -102,11 +114,11 @@ public final class Waypoint {
         this.icon = icon;
     }
 
-    public long getTrackId() {
+    public Track.Id getTrackId() {
         return trackId;
     }
 
-    public void setTrackId(long trackId) {
+    public void setTrackId(Track.Id trackId) {
         this.trackId = trackId;
     }
 
@@ -146,4 +158,66 @@ public final class Waypoint {
     public boolean hasPhoto() {
         return photoUrl != null && !"".equals(photoUrl);
     }
+
+    public static class Id implements Parcelable {
+
+        private final long id;
+
+        public Id(long id) {
+            this.id = id;
+        }
+
+        public Id(@NonNull String id) {
+            this(Long.parseLong(id));
+        }
+
+        //TOOD Limit visibility to TrackRecordingService / ContentProvider
+        public long getId() {
+            return id;
+        }
+
+        @Deprecated //TODO Use a Waypoint.Id of null instead
+        public boolean isValid() {
+            return id != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            if (this == o) return true;
+            if (o == null || getClass() != o.getClass()) return false;
+            Id id1 = (Id) o;
+            return id == id1.id;
+        }
+
+        @Override
+        public int hashCode() {
+            return Objects.hash(id);
+        }
+
+        @NonNull
+        @Override
+        public String toString() {
+            throw new RuntimeException("Not supported");
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel parcel, int i) {
+            parcel.writeLong(id);
+        }
+
+        public static final Parcelable.Creator<Id> CREATOR = new Parcelable.Creator<Id>() {
+            public Id createFromParcel(Parcel in) {
+                return new Id(in.readLong());
+            }
+
+            public Id[] newArray(int size) {
+                return new Id[size];
+            }
+        };
+    }
 }

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

@@ -30,9 +30,10 @@ public interface WaypointsColumns extends BaseColumns {
 
     String TABLE_NAME = "waypoints";
     Uri CONTENT_URI = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME);
+    Uri CONTENT_URI_BY_TRACKID = Uri.parse(ContentProviderUtils.CONTENT_BASE_URI + "/" + TABLE_NAME + "/trackid");
     String CONTENT_TYPE = "vnd.android.cursor.dir/vnd.de.dennisguse.waypoint";
     String CONTENT_ITEMTYPE = "vnd.android.cursor.item/vnd.de.dennisguse.waypoint";
-    String DEFAULT_SORT_ORDER = "_id";
+    String DEFAULT_SORT_ORDER = _ID;
 
     // Columns
     String NAME = "name"; // waypoint name

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

@@ -23,13 +23,19 @@ import android.database.Cursor;
 import android.location.Location;
 import android.net.Uri;
 import android.text.TextUtils;
+import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;
+import androidx.loader.content.CursorLoader;
+import androidx.loader.content.Loader;
 
 import java.io.File;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
+import java.util.UUID;
 
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.android.ContentResolverWrapper;
@@ -42,6 +48,8 @@ import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.FileUtils;
+import de.dennisguse.opentracks.util.TrackUtils;
+import de.dennisguse.opentracks.util.UUIDUtils;
 
 /**
  * {@link ContentProviderUtils} implementation.
@@ -55,7 +63,8 @@ public class ContentProviderUtils {
     private static final int MAX_LATITUDE = 90000000;
 
     // The authority (the first part of the URI) for the app's content provider.
-    static final String AUTHORITY_PACKAGE = BuildConfig.APPLICATION_ID + ".content";
+    @VisibleForTesting
+    public static final String AUTHORITY_PACKAGE = BuildConfig.APPLICATION_ID + ".content";
 
     // The base URI for the app's content provider.
     public static final String CONTENT_BASE_URI = "content://" + AUTHORITY_PACKAGE;
@@ -85,8 +94,8 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    public void clearTrack(Context context, long trackId) {
-        deleteTrackPointsAndWaypoints(context, trackId);
+    public void clearTrack(Track.Id trackId) {
+        deleteTrackPointsAndWaypoints(trackId);
         Track track = new Track();
         track.setId(trackId);
         updateTrack(track);
@@ -99,6 +108,7 @@ public class ContentProviderUtils {
      */
     public Track createTrack(Cursor cursor) {
         int idIndex = cursor.getColumnIndexOrThrow(TracksColumns._ID);
+        int uuidIndex = cursor.getColumnIndexOrThrow(TracksColumns.UUID);
         int nameIndex = cursor.getColumnIndexOrThrow(TracksColumns.NAME);
         int descriptionIndex = cursor.getColumnIndexOrThrow(TracksColumns.DESCRIPTION);
         int categoryIndex = cursor.getColumnIndexOrThrow(TracksColumns.CATEGORY);
@@ -116,7 +126,10 @@ public class ContentProviderUtils {
         Track track = new Track();
         TrackStatistics trackStatistics = track.getTrackStatistics();
         if (!cursor.isNull(idIndex)) {
-            track.setId(cursor.getLong(idIndex));
+            track.setId(new Track.Id(cursor.getLong(idIndex)));
+        }
+        if (!cursor.isNull(uuidIndex)) {
+            track.setUuid(UUIDUtils.fromBytes(cursor.getBlob(uuidIndex)));
         }
         if (!cursor.isNull(nameIndex)) {
             track.setName(cursor.getString(nameIndex));
@@ -160,9 +173,7 @@ public class ContentProviderUtils {
         return track;
     }
 
-    /**
-     * Deletes all tracks (including waypoints and trackPoints).
-     */
+    @VisibleForTesting
     public void deleteAllTracks(Context context) {
         contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, null, null);
         contentResolver.delete(WaypointsColumns.CONTENT_URI, null, null);
@@ -178,14 +189,17 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    public void deleteTrack(Context context, long trackId) {
-        deleteTrackPointsAndWaypoints(context, trackId);
+    public void deleteTrack(Context context, Track.Id trackId) {
+        if (trackId == null) {
+            return;
+        }
+        deleteTrackPointsAndWaypoints(trackId);
 
         // Delete track folder resources.
         FileUtils.deleteDirectoryRecurse(FileUtils.getPhotoDir(context, trackId));
 
         // Delete track last since it triggers a database vacuum call
-        contentResolver.delete(TracksColumns.CONTENT_URI, TracksColumns._ID + "=?", new String[]{Long.toString(trackId)});
+        contentResolver.delete(TracksColumns.CONTENT_URI, TracksColumns._ID + "=?", new String[]{Long.toString(trackId.getId())});
     }
 
     /**
@@ -193,21 +207,15 @@ public class ContentProviderUtils {
      *
      * @param trackId the track id
      */
-    private void deleteTrackPointsAndWaypoints(Context context, long trackId) {
-        String where = TrackPointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
-        contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, where, selectionArgs);
+    private void deleteTrackPointsAndWaypoints(@NonNull Track.Id trackId) {
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
 
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns.TRACKID + "=?", new String[]{Long.toString(trackId)});
+        contentResolver.delete(TrackPointsColumns.CONTENT_URI_BY_ID, TrackPointsColumns.TRACKID + "=?", selectionArgs);
+        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns.TRACKID + "=?", selectionArgs);
     }
 
-    /**
-     * Gets all the tracks.
-     *
-     * @return the tracks do not have any trackPoints attached.
-     */
     @VisibleForTesting
-    public List<Track> getAllTracks() {
+    public List<Track> getTracks() {
         ArrayList<Track> tracks = new ArrayList<>();
         try (Cursor cursor = getTrackCursor(null, null, TracksColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
@@ -220,6 +228,17 @@ public class ContentProviderUtils {
         return tracks;
     }
 
+    public static Loader<Cursor> getTracksCursorLoader(Context context) {
+        String[] PROJECTION = new String[]{TracksColumns._ID, TracksColumns.NAME,
+                TracksColumns.DESCRIPTION, TracksColumns.CATEGORY, TracksColumns.STARTTIME,
+                TracksColumns.TOTALDISTANCE, TracksColumns.TOTALTIME, TracksColumns.ICON};
+
+        return new CursorLoader(context, TracksColumns.CONTENT_URI, PROJECTION, null, null, TrackUtils.TRACK_SORT_ORDER);
+    }
+
+    @Deprecated
+    //TODO Do not use; rather get the proper TrackId (e.g., resume a track might give you some weird effects).
+    @VisibleForTesting
     public Track getLastTrack() {
         try (Cursor cursor = getTrackCursor(null, null, TracksColumns.STARTTIME + " DESC")) {
             // Using the same order as shown in the track list
@@ -232,13 +251,25 @@ public class ContentProviderUtils {
 
     /**
      * @param trackId the track id.
-     * @return the track doesn't have any trackPoints attached
      */
-    public Track getTrack(long trackId) {
-        if (trackId < 0) {
+    public Track getTrack(Track.Id trackId) {
+        if (trackId == null || !trackId.isValid()) {
             return null;
         }
-        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId)}, TracksColumns._ID)) {
+        try (Cursor cursor = getTrackCursor(TracksColumns._ID + "=?", new String[]{Long.toString(trackId.getId())}, null)) {
+            if (cursor != null && cursor.moveToNext()) {
+                return createTrack(cursor);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @param trackUUID the track uuid.
+     */
+    public Track getTrack(@NonNull UUID trackUUID) {
+        String trackUUIDsearch = UUIDUtils.toHex(trackUUID);
+        try (Cursor cursor = getTrackCursor("hex(" + TracksColumns.UUID + ")=?", new String[]{trackUUIDsearch}, null)) {
             if (cursor != null && cursor.moveToNext()) {
                 return createTrack(cursor);
             }
@@ -276,7 +307,7 @@ public class ContentProviderUtils {
      * @param track the track
      */
     public void updateTrack(Track track) {
-        contentResolver.update(TracksColumns.CONTENT_URI, createContentValues(track), TracksColumns._ID + "=?", new String[]{Long.toString(track.getId())});
+        contentResolver.update(TracksColumns.CONTENT_URI, createContentValues(track), TracksColumns._ID + "=?", new String[]{Long.toString(track.getId().getId())});
     }
 
     private ContentValues createContentValues(Track track) {
@@ -284,9 +315,10 @@ public class ContentProviderUtils {
         TrackStatistics trackStatistics = track.getTrackStatistics();
 
         // Value < 0 indicates no id is available
-        if (track.getId() >= 0) {
-            values.put(TracksColumns._ID, track.getId());
+        if (track.getId() != null && track.getId().isValid()) {
+            values.put(TracksColumns._ID, track.getId().getId());
         }
+        values.put(TracksColumns.UUID, UUIDUtils.toBytes(track.getUuid()));
         values.put(TracksColumns.NAME, track.getName());
         values.put(TracksColumns.DESCRIPTION, track.getDescription());
         values.put(TracksColumns.CATEGORY, track.getCategory());
@@ -350,7 +382,7 @@ public class ContentProviderUtils {
         Waypoint waypoint = new Waypoint(location);
 
         if (!cursor.isNull(idIndex)) {
-            waypoint.setId(cursor.getLong(idIndex));
+            waypoint.setId(new Waypoint.Id(cursor.getLong(idIndex)));
         }
         if (!cursor.isNull(nameIndex)) {
             waypoint.setName(cursor.getString(nameIndex));
@@ -365,7 +397,7 @@ public class ContentProviderUtils {
             waypoint.setIcon(cursor.getString(iconIndex));
         }
         if (!cursor.isNull(trackIdIndex)) {
-            waypoint.setTrackId(cursor.getLong(trackIdIndex));
+            waypoint.setTrackId(new Track.Id(cursor.getLong(trackIdIndex)));
         }
         if (!cursor.isNull(lengthIndex)) {
             waypoint.setLength(cursor.getFloat(lengthIndex));
@@ -380,10 +412,10 @@ public class ContentProviderUtils {
         return waypoint;
     }
 
-    public void deleteWaypoint(Context context, long waypointId) {
+    public void deleteWaypoint(Context context, Waypoint.Id waypointId) {
         final Waypoint waypoint = getWaypoint(waypointId);
         deleteWaypointPhoto(context, waypoint);
-        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns._ID + "=?", new String[]{Long.toString(waypointId)});
+        contentResolver.delete(WaypointsColumns.CONTENT_URI, WaypointsColumns._ID + "=?", new String[]{Long.toString(waypointId.getId())});
     }
 
     /**
@@ -392,13 +424,13 @@ public class ContentProviderUtils {
      * @param trackId the track id
      * @return -1 if not able to get the next waypoint number.
      */
-    public int getNextWaypointNumber(long trackId) {
-        if (trackId < 0) {
+    public int getNextWaypointNumber(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return -1;
         }
         String[] projection = {WaypointsColumns._ID};
         String selection = WaypointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getWaypointCursor(projection, selection, selectionArgs, WaypointsColumns._ID, -1)) {
             if (cursor != null) {
                 return cursor.getCount();
@@ -407,12 +439,12 @@ public class ContentProviderUtils {
         return -1;
     }
 
-    public Waypoint getWaypoint(long waypointId) {
-        if (waypointId < 0) {
+    public Waypoint getWaypoint(Waypoint.Id waypointId) {
+        if (!waypointId.isValid()) {
             return null;
         }
         try (Cursor cursor = getWaypointCursor(null, WaypointsColumns._ID + "=?",
-                new String[]{Long.toString(waypointId)}, WaypointsColumns._ID, 1)) {
+                new String[]{Long.toString(waypointId.getId())}, WaypointsColumns._ID, 1)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return createWaypoint(cursor);
             }
@@ -438,30 +470,30 @@ public class ContentProviderUtils {
      * The caller owns the returned cursor and is responsible for closing it.
      *
      * @param trackId       the track id
-     * @param minWaypointId the minimum waypoint id. -1L to ignore
+     * @param minWaypointId the minimum waypoint id. null to ignore
      * @param maxWaypoints  the maximum number of waypoints to return. -1 for no limit
      */
-    public Cursor getWaypointCursor(long trackId, long minWaypointId, int maxWaypoints) {
-        if (trackId < 0) {
+    public Cursor getWaypointCursor(Track.Id trackId, @Nullable Waypoint.Id minWaypointId, int maxWaypoints) {
+        if (!trackId.isValid()) {
             return null;
         }
 
         String selection;
         String[] selectionArgs;
-        if (minWaypointId >= 0) {
+        if (minWaypointId != null && minWaypointId.isValid()) {
             selection = WaypointsColumns.TRACKID + "=? AND " + WaypointsColumns._ID + ">=?";
-            selectionArgs = new String[]{Long.toString(trackId), Long.toString(minWaypointId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(minWaypointId.getId())};
         } else {
             selection = WaypointsColumns.TRACKID + "=?";
-            selectionArgs = new String[]{Long.toString(trackId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId())};
         }
         return getWaypointCursor(null, selection, selectionArgs, WaypointsColumns._ID, maxWaypoints);
     }
 
     @VisibleForTesting
-    public List<Waypoint> getWaypoints(long trackId) {
+    public List<Waypoint> getWaypoints(Track.Id trackId) {
         ArrayList<Waypoint> waypoints = new ArrayList<>();
-        try (Cursor cursor = getWaypointCursor(trackId, -1L, -1)) {
+        try (Cursor cursor = getWaypointCursor(trackId, null, -1)) {
             if (cursor.moveToFirst()) {
                 do {
                     waypoints.add(createWaypoint(cursor));
@@ -471,19 +503,34 @@ public class ContentProviderUtils {
         return waypoints;
     }
 
+    public static Loader<Cursor> getWaypointsLoader(Context context, @Nullable Track.Id trackId) {
+        final String[] PROJECTION = new String[]{WaypointsColumns._ID,
+                WaypointsColumns.NAME, WaypointsColumns.DESCRIPTION, WaypointsColumns.CATEGORY,
+                WaypointsColumns.TIME, WaypointsColumns.PHOTOURL,
+                WaypointsColumns.LATITUDE, WaypointsColumns.LONGITUDE};
+
+        if (trackId != null) {
+            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION,
+                    WaypointsColumns.TRACKID + "=?",
+                    new String[]{String.valueOf(trackId.getId())}, null);
+        } else {
+            return new CursorLoader(context, WaypointsColumns.CONTENT_URI, PROJECTION, null, null, null);
+        }
+    }
+
     /**
      * Gets the number of waypoints for a track.
      *
      * @param trackId the track id
      */
-    public int getWaypointCount(long trackId) {
-        if (trackId < 0) {
+    public int getWaypointCount(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return 0;
         }
 
         String[] projection = new String[]{"count(*) AS count"};
         String selection = WaypointsColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = contentResolver.query(WaypointsColumns.CONTENT_URI, projection, selection, selectionArgs, WaypointsColumns._ID)) {
             if (cursor == null) {
                 return 0;
@@ -499,8 +546,8 @@ public class ContentProviderUtils {
      * @param waypoint the waypoint
      * @return the content provider URI of the inserted waypoint.
      */
-    public Uri insertWaypoint(Waypoint waypoint) {
-        waypoint.setId(-1L);
+    public Uri insertWaypoint(@NonNull Waypoint waypoint) {
+        waypoint.setId(null);
         return contentResolver.insert(WaypointsColumns.CONTENT_URI, createContentValues(waypoint));
     }
 
@@ -535,22 +582,23 @@ public class ContentProviderUtils {
         if (!updatedWaypoint.hasPhoto()) {
             deleteWaypointPhoto(context, savedWaypoint);
         }
-        int rows = contentResolver.update(WaypointsColumns.CONTENT_URI, createContentValues(updatedWaypoint), WaypointsColumns._ID + "=?", new String[]{Long.toString(updatedWaypoint.getId())});
+        int rows = contentResolver.update(WaypointsColumns.CONTENT_URI, createContentValues(updatedWaypoint), WaypointsColumns._ID + "=?", new String[]{Long.toString(updatedWaypoint.getId().getId())});
         return rows == 1;
     }
 
-    ContentValues createContentValues(Waypoint waypoint) {
+    ContentValues createContentValues(@NonNull Waypoint waypoint) {
         ContentValues values = new ContentValues();
 
-        // Value < 0 indicates no id is available
-        if (waypoint.getId() >= 0) {
-            values.put(WaypointsColumns._ID, waypoint.getId());
+        if (waypoint.getId() != null && waypoint.getId().isValid()) {
+            values.put(WaypointsColumns._ID, waypoint.getId().getId());
         }
         values.put(WaypointsColumns.NAME, waypoint.getName());
         values.put(WaypointsColumns.DESCRIPTION, waypoint.getDescription());
         values.put(WaypointsColumns.CATEGORY, waypoint.getCategory());
         values.put(WaypointsColumns.ICON, waypoint.getIcon());
-        values.put(WaypointsColumns.TRACKID, waypoint.getTrackId());
+        if (waypoint.getTrackId() != null) {
+            values.put(WaypointsColumns.TRACKID, waypoint.getTrackId().getId());
+        }
         values.put(WaypointsColumns.LENGTH, waypoint.getLength());
         values.put(WaypointsColumns.DURATION, waypoint.getDuration());
 
@@ -643,7 +691,7 @@ public class ContentProviderUtils {
      * @return the number of trackPoints inserted
      */
     //TODO Only used for testing and file import; might be better to replace it.
-    public int bulkInsertTrackPoint(TrackPoint[] trackPoints, long trackId) {
+    public int bulkInsertTrackPoint(TrackPoint[] trackPoints, Track.Id trackId) {
         ContentValues[] values = new ContentValues[trackPoints.length];
         for (int i = 0; i < values.length; i++) {
             values[i] = createContentValues(trackPoints[i], trackId);
@@ -653,23 +701,23 @@ public class ContentProviderUtils {
 
     /**
      * Gets the first location id for a track.
-     * Returns -1L if it doesn't exist.
+     * Returns null if it doesn't exist.
      *
      * @param trackId the track id
      */
     @Deprecated
-    public long getFirstTrackPointId(long trackId) {
-        if (trackId < 0) {
-            return -1L;
+    public Track.Id getFirstTrackPointId(Track.Id trackId) {
+        if (!trackId.isValid()) {
+            return null;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MIN(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
-                return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
+                return new Track.Id(cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID)));
             }
         }
-        return -1L;
+        return null;
     }
 
     /**
@@ -679,12 +727,13 @@ public class ContentProviderUtils {
      * @param trackId the track id
      */
     @Deprecated
-    public long getLastTrackPointId(long trackId) {
-        if (trackId < 0) {
+    public long getLastTrackPointId(Track.Id trackId) {
+        if (trackId == null || !trackId.isValid()) {
+            Log.w(TAG, "Fix callers who do this.");
             return -1L;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") from " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
@@ -700,12 +749,12 @@ public class ContentProviderUtils {
      * @param location the location
      * @return trackPoint id if the location is in the track. -1L otherwise.
      */
-    public long getTrackPointId(long trackId, Location location) {
-        if (trackId < 0) {
+    public long getTrackPointId(Track.Id trackId, Location location) {
+        if (!trackId.isValid()) {
             return -1L;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns.TIME + "=?)";
-        String[] selectionArgs = new String[]{Long.toString(trackId), Long.toString(location.getTime())};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(location.getTime())};
         try (Cursor cursor = getTrackPointCursor(new String[]{TrackPointsColumns._ID}, selection, selectionArgs, TrackPointsColumns._ID)) {
             if (cursor != null && cursor.moveToFirst()) {
                 return cursor.getLong(cursor.getColumnIndexOrThrow(TrackPointsColumns._ID));
@@ -731,8 +780,8 @@ public class ContentProviderUtils {
      * @param maxLocations      maximum number of locations to return. -1 for no limit
      * @param descending        true to sort the result in descending order (latest location first)
      */
-    public Cursor getTrackPointCursor(long trackId, long startTrackPointId, int maxLocations, boolean descending) {
-        if (trackId < 0) {
+    public Cursor getTrackPointCursor(Track.Id trackId, long startTrackPointId, int maxLocations, boolean descending) {
+        if (!trackId.isValid()) {
             return null;
         }
 
@@ -741,10 +790,10 @@ public class ContentProviderUtils {
         if (startTrackPointId >= 0) {
             String comparison = descending ? "<=" : ">=";
             selection = TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns._ID + comparison + "?";
-            selectionArgs = new String[]{Long.toString(trackId), Long.toString(startTrackPointId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId()), Long.toString(startTrackPointId)};
         } else {
             selection = TrackPointsColumns.TRACKID + "=?";
-            selectionArgs = new String[]{Long.toString(trackId)};
+            selectionArgs = new String[]{Long.toString(trackId.getId())};
         }
 
         String sortOrder = TrackPointsColumns._ID;
@@ -764,12 +813,12 @@ public class ContentProviderUtils {
      * @param trackId the track id
      */
     @Deprecated
-    public TrackPoint getLastValidTrackPoint(long trackId) {
-        if (trackId < 0) {
+    public TrackPoint getLastValidTrackPoint(Track.Id trackId) {
+        if (!trackId.isValid()) {
             return null;
         }
         String selection = TrackPointsColumns._ID + "=(SELECT MAX(" + TrackPointsColumns._ID + ") FROM " + TrackPointsColumns.TABLE_NAME + " WHERE " + TrackPointsColumns.TRACKID + "=? AND " + TrackPointsColumns.LATITUDE + "<=" + MAX_LATITUDE + ")";
-        String[] selectionArgs = new String[]{Long.toString(trackId)};
+        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
         return findTrackPointBy(selection, selectionArgs);
     }
 
@@ -780,7 +829,7 @@ public class ContentProviderUtils {
      * @param trackId    the track id
      * @return the content provider URI of the inserted trackPoint
      */
-    public Uri insertTrackPoint(TrackPoint trackPoint, long trackId) {
+    public Uri insertTrackPoint(TrackPoint trackPoint, Track.Id trackId) {
         return contentResolver.insert(TrackPointsColumns.CONTENT_URI_BY_ID, createContentValues(trackPoint, trackId));
     }
 
@@ -790,9 +839,9 @@ public class ContentProviderUtils {
      * @param trackPoint the trackPoint
      * @param trackId    the track id
      */
-    private ContentValues createContentValues(TrackPoint trackPoint, long trackId) {
+    private ContentValues createContentValues(TrackPoint trackPoint, Track.Id trackId) {
         ContentValues values = new ContentValues();
-        values.put(TrackPointsColumns.TRACKID, trackId);
+        values.put(TrackPointsColumns.TRACKID, trackId.getId());
         values.put(TrackPointsColumns.LONGITUDE, (int) (trackPoint.getLongitude() * 1E6));
         values.put(TrackPointsColumns.LATITUDE, (int) (trackPoint.getLatitude() * 1E6));
 
@@ -833,7 +882,7 @@ public class ContentProviderUtils {
      * @param startTrackPointId the starting trackPoint id. -1L to ignore
      * @param descending        true to sort the result in descending order (latest location first)
      */
-    public TrackPointIterator getTrackPointLocationIterator(final long trackId, final long startTrackPointId, final boolean descending) {
+    public TrackPointIterator getTrackPointLocationIterator(final Track.Id trackId, final long startTrackPointId, final boolean descending) {
         return new TrackPointIterator(this, trackId, startTrackPointId, descending);
     }
 
@@ -859,7 +908,7 @@ public class ContentProviderUtils {
     }
 
     @VisibleForTesting
-    public List<TrackPoint> getTrackPoints(long trackId) {
+    public List<TrackPoint> getTrackPoints(Track.Id trackId) {
         List<TrackPoint> trackPoints = null;
 
         try (Cursor trackPointCursor = getTrackPointCursor(trackId, -1L, -1, false)) {
@@ -890,13 +939,23 @@ public class ContentProviderUtils {
         this.defaultCursorBatchSize = defaultCursorBatchSize;
     }
 
+
+    public static String formatIdListForUri(Track.Id... trackIds) {
+        long[] ids = new long[trackIds.length];
+        for (int i = 0; i < trackIds.length; i++) {
+            ids[i] = trackIds[i].getId();
+        }
+
+        return formatIdListForUri(ids);
+    }
+
     /**
      * Formats an array of IDs as comma separated string value
      *
      * @param ids array with IDs
      * @return comma separated list of ids
      */
-    public static String formatIdListForUri(long[] ids) {
+    private static String formatIdListForUri(long[] ids) {
         StringBuilder idsPathSegment = new StringBuilder();
         for (long id : ids) {
             if (idsPathSegment.length() > 0) {

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

@@ -42,7 +42,7 @@ import de.dennisguse.opentracks.content.data.WaypointsColumns;
  *
  * @author Leif Hendrik Wilden
  */
-public abstract class CustomContentProvider extends ContentProvider {
+public class CustomContentProvider extends ContentProvider {
 
     private static final String TAG = CustomContentProvider.class.getSimpleName();
 
@@ -63,6 +63,7 @@ public abstract class CustomContentProvider extends ContentProvider {
 
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI.getPath(), UrlType.WAYPOINTS.ordinal());
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI.getPath() + "/#", UrlType.WAYPOINTS_BY_ID.ordinal());
+        uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, WaypointsColumns.CONTENT_URI_BY_TRACKID.getPath() + "/*", UrlType.WAYPOINTS_BY_TRACKID.ordinal());
     }
 
     @Override
@@ -140,6 +141,7 @@ public abstract class CustomContentProvider extends ContentProvider {
             case WAYPOINTS:
                 return WaypointsColumns.CONTENT_TYPE;
             case WAYPOINTS_BY_ID:
+            case WAYPOINTS_BY_TRACKID:
                 return WaypointsColumns.CONTENT_ITEMTYPE;
             default:
                 throw new IllegalArgumentException("Unknown URL " + url);
@@ -219,6 +221,10 @@ public abstract class CustomContentProvider extends ContentProvider {
                 queryBuilder.setTables(WaypointsColumns.TABLE_NAME);
                 queryBuilder.appendWhere(WaypointsColumns._ID + "=" + ContentUris.parseId(url));
                 break;
+            case WAYPOINTS_BY_TRACKID:
+                queryBuilder.setTables(WaypointsColumns.TABLE_NAME);
+                queryBuilder.appendWhere(WaypointsColumns.TRACKID + " IN (" + TextUtils.join(SQL_LIST_DELIMITER, ContentProviderUtils.parseTrackIdsFromUri(url)) + ")");
+                break;
             default:
                 throw new IllegalArgumentException("Unknown url " + url);
         }
@@ -382,6 +388,7 @@ public abstract class CustomContentProvider extends ContentProvider {
         TRACKS,
         TRACKS_BY_ID,
         WAYPOINTS,
-        WAYPOINTS_BY_ID
+        WAYPOINTS_BY_ID,
+        WAYPOINTS_BY_TRACKID
     }
 }

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

@@ -1,29 +1,34 @@
 package de.dennisguse.opentracks.content.provider;
 
+import android.content.ContentValues;
 import android.content.Context;
+import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 import android.util.Log;
 
 import androidx.annotation.VisibleForTesting;
 
+import java.util.UUID;
+
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 import de.dennisguse.opentracks.content.data.WaypointsColumns;
+import de.dennisguse.opentracks.util.UUIDUtils;
 
 /**
  * Database helper for creating and upgrading the database.
  */
 @VisibleForTesting
-class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
+public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
 
-    @VisibleForTesting
-    private static final int DATABASE_VERSION = 25;
     private static final String TAG = CustomSQLiteOpenHelper.class.getSimpleName();
 
-    @VisibleForTesting
-    private static final String DATABASE_NAME = "database.db";
+    private static final int DATABASE_VERSION = 26;
 
+    @VisibleForTesting
+    public static final String DATABASE_NAME = "database.db";
 
     public CustomSQLiteOpenHelper(Context context) {
         this(context, DATABASE_NAME);
@@ -45,6 +50,7 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
         db.execSQL(TrackPointsColumns.CREATE_TABLE_INDEX);
 
         db.execSQL(TracksColumns.CREATE_TABLE);
+        db.execSQL(TracksColumns.CREATE_TABLE_INDEX);
 
         db.execSQL(WaypointsColumns.CREATE_TABLE);
         db.execSQL(WaypointsColumns.CREATE_TABLE_INDEX);
@@ -61,6 +67,9 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                 case 25:
                     upgradeFrom24to25(db);
                     break;
+                case 26:
+                    upgradeFrom25to26(db);
+                    break;
 
                 default:
                     throw new RuntimeException("Not implemented: upgrade to " + toVersion);
@@ -79,6 +88,9 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                 case 24:
                     downgradeFrom25to24(db);
                     break;
+                case 25:
+                    downgradeFrom26to25(db);
+                    break;
 
                 default:
                     throw new RuntimeException("Not implemented: downgrade to " + toVersion);
@@ -107,7 +119,7 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
     }
 
     private void downgradeFrom24to23(SQLiteDatabase db) {
-        //Not needed as the delete columns did not contain any data
+        //Not needed as the deleted columns did not contain any data
         db.beginTransaction();
         db.execSQL("ALTER TABLE tracks RENAME TO tracks_old");
         db.execSQL("CREATE TABLE tracks (_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, description TEXT, category TEXT, starttime INTEGER, stoptime INTEGER, numpoints INTEGER, totaldistance FLOAT, totaltime INTEGER, movingtime INTEGER, avgspeed FLOAT, avgmovingspeed FLOAT, maxspeed FLOAT, minelevation FLOAT, maxelevation FLOAT, elevationgain FLOAT, mingrade FLOAT, maxgrade FLOAT, icon TEXT)");
@@ -142,4 +154,40 @@ class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
         db.setTransactionSuccessful();
         db.endTransaction();
     }
+
+    private void upgradeFrom25to26(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        db.execSQL("ALTER TABLE tracks ADD COLUMN uuid BLOB");
+        try (Cursor cursor = db.query("tracks", new String[]{"_id"}, null, null, null, null, null)) {
+            if (cursor.moveToFirst()) {
+                int trackIdIndex = cursor.getColumnIndexOrThrow("_id");
+                do {
+                    Track.Id trackId = new Track.Id(cursor.getLong(trackIdIndex));
+                    ContentValues cv = new ContentValues();
+                    cv.put("uuid", UUIDUtils.toBytes(UUID.randomUUID()));
+                    db.update("tracks", cv, "_id = ?", new String[]{String.valueOf(trackId)});
+                } while (cursor.moveToNext());
+            }
+        }
+
+        db.execSQL("CREATE UNIQUE INDEX tracks_uuid_index ON tracks(uuid)");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
+
+    private void downgradeFrom26to25(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        db.execSQL("DROP INDEX tracks_uuid_index");
+
+        db.execSQL("ALTER TABLE tracks RENAME TO tracks_old");
+        db.execSQL("CREATE TABLE tracks (_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, description TEXT, category TEXT, starttime INTEGER, stoptime INTEGER, numpoints INTEGER, totaldistance FLOAT, totaltime INTEGER, movingtime INTEGER, avgspeed FLOAT, avgmovingspeed FLOAT, maxspeed FLOAT, minelevation FLOAT, maxelevation FLOAT, elevationgain FLOAT, mingrade FLOAT, maxgrade FLOAT, icon TEXT)");
+        db.execSQL("INSERT INTO tracks SELECT _id, name, description, category, starttime, stoptime, numpoints, totaldistance, totaltime, movingtime, avgspeed, avgmovingspeed, maxspeed, minelevation, maxelevation, elevationgain, 0, 0, icon FROM tracks_old");
+        db.execSQL("DROP TABLE tracks_old");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
 }

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

@@ -6,7 +6,6 @@ import android.content.pm.ProviderInfo;
 import android.database.Cursor;
 import android.database.MatrixCursor;
 import android.net.Uri;
-import android.os.Bundle;
 import android.os.ParcelFileDescriptor;
 import android.provider.OpenableColumns;
 import android.util.Log;
@@ -18,8 +17,11 @@ import androidx.annotation.Nullable;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
 
 import de.dennisguse.opentracks.android.IContentResolver;
 import de.dennisguse.opentracks.content.data.Track;
@@ -30,9 +32,9 @@ import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 /**
  * A content provider that mimics the behavior of {@link androidx.core.content.FileProvider}, which shares virtual (non-existing) KML-files.
  * The actual content of the virtual files is generated by using the functionality defined in {@link CustomContentProvider}.
- *
+ * <p>
  * Moreover, it manages access to OpenTrack's database via {@link CustomContentProvider}.
- *
+ * <p>
  * Explanation:
  * Although a request is handled by a {@link android.content.ContentProvider} (with temporarily granted permission), Android's security infrastructure prevents forwarding queries to non-exported {@link android.content.ContentProvider}.
  * Thus, if {@link ShareContentProvider} and {@link CustomContentProvider} would be two different instances, the data would not be accessible to external apps.
@@ -71,14 +73,20 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
         uriMatcher.addURI(ContentProviderUtils.AUTHORITY_PACKAGE, TracksColumns.TABLE_NAME + "/" + TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES.getName() + "/*/*", URI_KMZ_WITH_TRACKDETAIL_SENSORDATA_AND_PICTURES);
     }
 
-    public static Pair<Uri, String> createURI(long[] trackIds, String trackName, @NonNull TrackFileFormat trackFileFormat) {
-        if (trackIds.length == 0) {
+    public static Pair<Uri, String> createURI(Track.Id trackId, String trackName, @NonNull TrackFileFormat trackFileFormat) {
+        Set<Track.Id> trackIds = new HashSet<>(1);
+        trackIds.add(trackId);
+        return createURI(trackIds, trackName, trackFileFormat);
+    }
+
+    public static Pair<Uri, String> createURI(Set<Track.Id> trackIds, String trackName, @NonNull TrackFileFormat trackFileFormat) {
+        if (trackIds.size() == 0) {
             throw new UnsupportedOperationException();
         }
 
         StringBuilder trackIdBuilder = new StringBuilder();
-        for (long trackId : trackIds) {
-            trackIdBuilder.append(trackId).append(TRACKID_DELIMITER);
+        for (Track.Id trackId : trackIds) {
+            trackIdBuilder.append(trackId.getId()).append(TRACKID_DELIMITER);
         }
         trackIdBuilder.deleteCharAt(trackIdBuilder.lastIndexOf(TRACKID_DELIMITER));
 
@@ -90,18 +98,18 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
         return new Pair<>(uri, mime);
     }
 
-    static long[] parseURI(Uri uri) {
+    static Set<Track.Id> parseURI(Uri uri) {
         List<String> uriPaths = uri.getPathSegments();
         if (uriPaths == null || uriPaths.size() < 3) {
             Log.d(TAG, "URI does not contain any trackIds.");
-            return new long[]{};
+            return new HashSet<>();
         }
 
         String[] uriTrackIds = uriPaths.get(2).split(TRACKID_DELIMITER);
 
-        long[] trackIds = new long[uriTrackIds.length];
-        for (int i = 0; i < trackIds.length; i++) {
-            trackIds[i] = Long.parseLong(uriTrackIds[i]);
+        Set<Track.Id> trackIds = new HashSet<>();
+        for (String uriTrackId : uriTrackIds) {
+            trackIds.add(new Track.Id(Long.parseLong(uriTrackId)));
         }
         return trackIds;
     }
@@ -203,22 +211,19 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
     public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
         ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
 
-        long[] trackIds = parseURI(uri);
-        final Track[] tracks = new Track[trackIds.length];
-        for (int i = 0; i < trackIds.length; i++) {
-            tracks[i] = contentProviderUtils.getTrack(trackIds[i]);
+        Set<Track.Id> trackIds = parseURI(uri);
+        final ArrayList<Track> tracks = new ArrayList<>();
+        for (Track.Id trackId : trackIds) {
+            tracks.add(contentProviderUtils.getTrack(trackId));
         }
 
-        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext(), tracks);
+        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext());
 
-        PipeDataWriter pipeDataWriter = new PipeDataWriter<String>() {
-            @Override
-            public void writeDataToPipe(@NonNull ParcelFileDescriptor output, @NonNull Uri uri, @NonNull String mimeType, @Nullable Bundle opts, @Nullable String args) {
-                try (FileOutputStream fileOutputStream = new FileOutputStream(output.getFileDescriptor())) {
-                    trackExporter.writeTrack(getContext(), fileOutputStream);
-                } catch (IOException e) {
-                    Log.w(TAG, "there occurred an error while sharing a file: " + e);
-                }
+        PipeDataWriter<String> pipeDataWriter = (output, uri1, mimeType, opts, args) -> {
+            try (FileOutputStream fileOutputStream = new FileOutputStream(output.getFileDescriptor())) {
+                trackExporter.writeTrack(tracks.toArray(new Track[0]), fileOutputStream);
+            } catch (IOException e) {
+                Log.w(TAG, "there occurred an error while sharing a file: " + e);
             }
         };
 

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

@@ -6,6 +6,7 @@ import android.util.Log;
 import java.util.Iterator;
 import java.util.NoSuchElementException;
 
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
 
 /**
@@ -16,14 +17,14 @@ public class TrackPointIterator implements Iterator<TrackPoint>, AutoCloseable {
     private static final String TAG = TrackPointIterator.class.getSimpleName();
 
     private final ContentProviderUtils contentProviderUtils;
-    private final long trackId;
+    private final Track.Id trackId;
     private final boolean descending;
     private final CachedTrackPointsIndexes indexes;
     private long lastTrackPointId = -1L;
     private Cursor cursor;
 
 
-    public TrackPointIterator(ContentProviderUtils contentProviderUtils, long trackId, long startTrackPointId, boolean descending) {
+    public TrackPointIterator(ContentProviderUtils contentProviderUtils, Track.Id trackId, long startTrackPointId, boolean descending) {
         this.contentProviderUtils = contentProviderUtils;
         this.trackId = trackId;
         this.descending = descending;
@@ -100,13 +101,4 @@ public class TrackPointIterator implements Iterator<TrackPoint>, AutoCloseable {
     public void remove() {
         throw new UnsupportedOperationException();
     }
-
-    public int getCount() {
-        if (cursor == null) {
-            return -1;
-        }
-
-        return cursor.getCount();
-    }
-
 }

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

@@ -6,10 +6,10 @@ import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
 
 public class SensorData {
 
-    private String sensorAddress;
-    private String sensorName;
+    private final String sensorAddress;
+    private final String sensorName;
 
-    private long timestamp_ms;
+    private final long timestamp_ms;
 
     SensorData(String sensorAddress, String sensorName) {
         this(sensorAddress, sensorName, System.currentTimeMillis());

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

@@ -25,8 +25,8 @@ public final class SensorDataCycling {
 
     public static class Cadence extends SensorData {
 
-        private long crankRevolutionsCount; // UINT32
-        private int crankRevolutionsTime; // UINT16; 1/1024s
+        private final long crankRevolutionsCount; // UINT32
+        private final int crankRevolutionsTime; // UINT16; 1/1024s
         private float cadence_rpm = INVALID_VALUE_FLOAT;
 
         public Cadence(String sensorAddress, String sensorName, long crankRevolutionsCount, int crankRevolutionsTime) {
@@ -93,8 +93,8 @@ public final class SensorDataCycling {
 
     public static class Speed extends SensorData {
 
-        private int wheelRevolutionsCount; // UINT16
-        private int wheelRevolutionsTime; // UINT16; 1/1024s
+        private final int wheelRevolutionsCount; // UINT16
+        private final int wheelRevolutionsTime; // UINT16; 1/1024s
         private float speed_mps = INVALID_VALUE_FLOAT;
 
         public Speed(String sensorAddress, String sensorName, int wheelRevolutionsCount, int wheelRevolutionsTime) {
@@ -154,8 +154,8 @@ public final class SensorDataCycling {
 
     public static class CadenceAndSpeed extends SensorData {
 
-        private Cadence cadence;
-        private Speed speed;
+        private final Cadence cadence;
+        private final Speed speed;
 
         public CadenceAndSpeed(String sensorAddress, String sensorName, @NonNull Cadence cadence, @NonNull Speed speed) {
             super(sensorAddress, sensorName);

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

@@ -4,7 +4,7 @@ import androidx.annotation.NonNull;
 
 public class SensorDataHeartRate extends SensorData {
 
-    private float heartRate_bpm;
+    private final float heartRate_bpm;
 
     public SensorDataHeartRate(String name, String address, float heartRate_bpm) {
         super(name, address);

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

@@ -18,7 +18,6 @@ package de.dennisguse.opentracks.fragments;
 
 import android.app.Dialog;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
@@ -26,6 +25,7 @@ import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.util.DialogUtils;
 
 /**
@@ -43,11 +43,11 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
     /**
      * Create a new instance.
      *
-     * @param trackIds list of track ids to delete. To delete all, set to size 1 with trackIds[0] == -1L
+     * @param trackIds list of track ids to delete.
      */
-    public static void showDialog(FragmentManager fragmentManager, long[] trackIds) {
+    public static void showDialog(FragmentManager fragmentManager, Track.Id... trackIds) {
         Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_TRACK_IDS, trackIds);
+        bundle.putParcelableArray(KEY_TRACK_IDS, trackIds);
 
         ConfirmDeleteDialogFragment deleteTrackDialogFragment = new ConfirmDeleteDialogFragment();
         deleteTrackDialogFragment.setArguments(bundle);
@@ -67,19 +67,16 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] trackIds = getArguments().getLongArray(KEY_TRACK_IDS);
+        final Track.Id[] trackIds = (Track.Id[]) getArguments().getParcelableArray(KEY_TRACK_IDS);
 
-        int titleId;
-        int messageId;
-        titleId = trackIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.track_delete_one_confirm_title;
-        messageId = trackIds.length > 1 ? R.string.track_delete_multiple_confirm_message : R.string.track_delete_one_confirm_message;
+        int titleId = trackIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.track_delete_one_confirm_title;
+        int messageId = trackIds.length > 1 ? R.string.track_delete_multiple_confirm_message : R.string.track_delete_one_confirm_message;
         return DialogUtils.createConfirmationDialog(
-                getActivity(), titleId, getString(messageId), new DialogInterface.OnClickListener() {
-                    @Override
-                    public void onClick(DialogInterface dialog, int which) {
-                        caller.onConfirmDeleteDone(trackIds);
-                    }
-                });
+                getActivity(),
+                titleId,
+                getString(messageId),
+                (dialog, which) -> caller.onConfirmDeleteDone(trackIds)
+        );
     }
 
     /**
@@ -89,12 +86,6 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
      */
     public interface ConfirmDeleteCaller {
 
-        /**
-         * Called when confirm delete is done.
-         *
-         * @param trackIds list of track ids to delete. To delete all, set to size 1
-         *                 with trackIds[0] == -1L
-         */
-        void onConfirmDeleteDone(long[] trackIds);
+        void onConfirmDeleteDone(Track.Id... trackIds);
     }
 }

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

@@ -18,7 +18,6 @@ package de.dennisguse.opentracks.fragments;
 
 import android.app.Dialog;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.os.Bundle;
 
 import androidx.annotation.NonNull;
@@ -27,6 +26,7 @@ import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Waypoint;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 import de.dennisguse.opentracks.util.DialogUtils;
 
@@ -42,9 +42,9 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
 
     private DeleteMarkerCaller caller;
 
-    public static void showDialog(FragmentManager fragmentManager, long[] markerIds) {
+    public static void showDialog(FragmentManager fragmentManager, Waypoint.Id... waypointIds) {
         Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_MARKER_IDS, markerIds);
+        bundle.putParcelableArray(KEY_MARKER_IDS, waypointIds);
 
         DeleteMarkerDialogFragment deleteMarkerDialogFragment = new DeleteMarkerDialogFragment();
         deleteMarkerDialogFragment.setArguments(bundle);
@@ -64,31 +64,26 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
     @Override
     @NonNull
     public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] markerIds = getArguments().getLongArray(KEY_MARKER_IDS);
+        final Waypoint.Id[] waypointIds = (Waypoint.Id[]) getArguments().getParcelableArray(KEY_MARKER_IDS);
 
         final FragmentActivity fragmentActivity = getActivity();
         int titleId;
         int messageId;
-        if (markerIds.length == 1 && markerIds[0] == -1L) {
+        if (waypointIds == null) {
             titleId = R.string.generic_delete_all_confirm_title;
             messageId = R.string.marker_delete_all_confirm_message;
         } else {
-            titleId = markerIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.marker_delete_one_confirm_title;
-            messageId = markerIds.length > 1 ? R.string.marker_delete_multiple_confirm_message : R.string.marker_delete_one_confirm_message;
+            titleId = waypointIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.marker_delete_one_confirm_title;
+            messageId = waypointIds.length > 1 ? R.string.marker_delete_multiple_confirm_message : R.string.marker_delete_one_confirm_message;
         }
         return DialogUtils.createConfirmationDialog(
-                fragmentActivity, titleId, getString(messageId), new DialogInterface.OnClickListener() {
-                    @Override
-                    public void onClick(DialogInterface dialog, int which) {
-                        new Thread(() -> {
-                            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(fragmentActivity);
-                            for (long markerId : markerIds) {
-                                contentProviderUtils.deleteWaypoint(getContext(), markerId);
-                            }
-                            caller.onDeleteMarkerDone();
-                        }).start();
+                fragmentActivity, titleId, getString(messageId), (dialog, which) -> new Thread(() -> {
+                    ContentProviderUtils contentProviderUtils = new ContentProviderUtils(fragmentActivity);
+                    for (Waypoint.Id waypointId : waypointIds) {
+                        contentProviderUtils.deleteWaypoint(getContext(), waypointId);
                     }
-                });
+                    caller.onDeleteMarkerDone();
+                }).start());
     }
 
     /**