Release: v3.12.0

fix #491 crash export on android 11
TrackListActivity now loads marker count via join rather than a 2nd select.
2026-09-30 16:52:21 +02:00 · 2020-11-03 20:11:21 +01:00 · 2020-11-03 19:57:19 +01:00 · 2020-11-01 21:53:11 +01:00 · 2020-11-01 21:11:58 +01:00 · 2020-11-01 13:21:53 +01:00
120 changed files with 2923 additions and 2117 deletions
@@ -1,5 +1,26 @@
 <component name="ProjectCodeStyleConfiguration">
  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="PACKAGES_TO_USE_STAR_IMPORTS">
+        <value>
+          <package name="java.util" alias="false" withSubpackages="false" />
+          <package name="kotlinx.android.synthetic" alias="false" withSubpackages="true" />
+          <package name="io.ktor" alias="false" withSubpackages="true" />
+        </value>
+      </option>
+      <option name="PACKAGES_IMPORT_LAYOUT">
+        <value>
+          <package name="" alias="false" withSubpackages="true" />
+          <package name="java" alias="false" withSubpackages="true" />
+          <package name="javax" alias="false" withSubpackages="true" />
+          <package name="kotlin" alias="false" withSubpackages="true" />
+          <package name="" alias="true" withSubpackages="true" />
+        </value>
+      </option>
+    </JetCodeStyleSettings>
+    <MarkdownNavigatorCodeStyleSettings>
+      <option name="RIGHT_MARGIN" value="72" />
+    </MarkdownNavigatorCodeStyleSettings>
    <codeStyleSettings language="XML">
      <indentOptions>
        <option name="CONTINUATION_INDENT_SIZE" value="4" />
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
    <output url="file://$PROJECT_DIR$/build/classes" />
  </component>
  <component name="ProjectType">
@@ -5,40 +5,52 @@ _OpenTracks_ is a sport tracking application that completely respects your priva
 <table>
    <tr>
        <th>Free</th>
-        <th>Paid (same as free)</th>
        <th>Donations</th>
        <th>Translations</th>
    </tr>
    <tr>
-        <td>
+        <td align="center">
            <a href="https://f-droid.org/packages/de.dennisguse.opentracks">
                <img alt="Get it on F-Droid" src="https://fdroid.gitlab.io/artwork/badge/get-it-on.png" height="60" align="middle">
-                <br />
-                <img alt="OpenTracks version published on F-Droid" src="https://img.shields.io/f-droid/v/de.dennisguse.opentracks.svg" align="middle" >
            </a>
        </td>
-        <td>
-            <a href="https://play.google.com/store/apps/details?id=de.dennisguse.opentracks.playstore">
-                <img alt="Get it on Google Play" src="https://play.google.com/intl/en_us/badges/static/images/badges/en_badge_web_generic.png" height="60" align="middle">
-            </a>
-        </td>
-        <td>
+        <td align="center">
            <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>
-        <td>
+        <td align="center">
            <a href="https://www.transifex.com/opentracks/opentracks/">
                Transifex
            </a>
        </td>
    </tr>
+    <tr>
+        <td align="center">
+            <img alt="OpenTracks version published on F-Droid" src="https://img.shields.io/f-droid/v/de.dennisguse.opentracks.svg" align="middle" >
+        </td>
+        <td align="center">
+            <a href="bitcoin:bc1qckpls3lpjlcpyxzm66hcy65hnesas9zgacy6yc">
+                <img alt="bitcoin:bc1qckpls3lpjlcpyxzm66hcy65hnesas9zgacy6yc" src="promotion/donations-bitcoin.png" height="90" align="middle">
+            </a>
+        </td align="center">
+        <td></td>
+    </tr>
+    <tr>
+        <td></td>
+        <td align="center">
+            <a href="https://play.google.com/store/apps/details?id=de.dennisguse.opentracks.playstore">
+                <img alt="Get it on Google Play" src="https://play.google.com/intl/en_us/badges/static/images/badges/en_badge_web_generic.png" height="60" align="middle">
+            </a>
+        </td>
+        <td></td>
+    </tr>
 </table>

 ## Features:
-* __Tracking:__ track your sport and outdoor activities 
+* __Tracking:__ track your sport and outdoor activities
 * __Photos and Markers:__ mark interesting locations while tracking (also with photos)
-* __Bluetooth LE sensors:__ 
+* __Bluetooth LE sensors:__
  * heart rate
  * cycling: speed and cadence
 * __Export data:__ export tracks either as KMZ (incl. photos), KML or GPX
@@ -47,9 +59,9 @@ _OpenTracks_ is a sport tracking application that completely respects your priva
 * __No advertising__
 * __Privacy:__
    * _does not contain any in-app analytics_
-    * _does not use Google Play Services_ 
+    * _does not use Google Play Services_
    * _has no cloud integration_
-    
+
 __Only required permissions:__
 * _ACCESS_FINE_LOCATION_: required to use the GPS.

@@ -69,12 +81,18 @@ However, this is rather slow and does not provide updates while recording.

 ## Screenshots
 <div>
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_1.png">
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_2.png">
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_3.png">
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_4.png">
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_5.png">
-    <img width="15%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_6.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_1.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_2.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_3.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_4.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_5.png">
+</div>
+<div>
+	<img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_6.png">
+    <img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_7.png">
+	<img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_8.png">
+	<img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_9.png">
+	<img width="18%" src="fastlane/metadata/android/en-US/phoneScreenshots/screenshot_10.png">
 </div>

 ## Project history
@@ -87,8 +105,8 @@ Plonk42's version is available [here](https://github.com/Plonk42/mytracks).
 In 2019, _OpenTracks_ was forked from Plonk42's _My Tracks_ and major rework was conducted.

 Rework of _OpenTracks_ included:
-* removing Google's analytics code, 
-* removing integration into Google Drive, 
+* removing Google's analytics code,
+* removing integration into Google Drive,
 * removing Google Maps integration,
 * removing Google Earth integration,
 * removing use of Google Play service,
@@ -98,7 +116,7 @@ Rework of _OpenTracks_ included:
 * removing Protobuf (store sensosensorr data in SQLite columns directly), and
 * removing Android Service API for other apps.

-Artwork, logos and user interface remained more or less unchanged. 
+Artwork, logos and user interface remained more or less unchanged.

 More information about _Google My Tracks_:
 * [Wikipedia page](https://en.wikipedia.org/wiki/MyTracks)
@@ -2,6 +2,7 @@

 ## HRS: Heartrate Service
 * Decathlon|Geonaute|Kalenji Dual HRM Belt
+* moofit heart rate monitor
 * Polar H7
 * Polar OH1
  Has updatable firmware that requires a user account at polar.com
@@ -6,7 +6,7 @@ buildscript {
        jcenter()
    }
    dependencies {
-        classpath 'com.android.tools.build:gradle:4.0.1'
+        classpath 'com.android.tools.build:gradle:4.1.0'
    }
 }

@@ -45,10 +45,14 @@ android {

    compileSdkVersion 30

+    buildFeatures {
+        viewBinding = true
+    }
+
    defaultConfig {
        applicationId "de.dennisguse.opentracks"
-        versionCode 3661
-        versionName "v3.11.1"
+        versionCode 3704
+        versionName "v3.12.0"

        buildConfigField "String", "VERSION_NAME_FULL", "\"${getVersionName()}\""

@@ -88,11 +92,11 @@ dependencies {
    implementation 'androidx.preference:preference:1.1.1'
    implementation 'androidx.documentfile:documentfile:1.0.1'
    implementation 'com.google.android.material:material:1.2.1'
-    implementation 'com.android.support.constraint:constraint-layout:2.0.1'
+    implementation 'com.android.support.constraint:constraint-layout:2.0.4'

    androidTestImplementation 'androidx.test:core:1.3.0'
    androidTestImplementation 'androidx.test.ext:junit:1.1.2'
    androidTestImplementation 'androidx.test:rules:1.3.0'
    androidTestImplementation 'androidx.test:runner:1.3.0'
-    androidTestImplementation 'org.mockito:mockito-android:3.5.13'
+    androidTestImplementation 'org.mockito:mockito-android:3.6.0'
 }
@@ -47,8 +47,9 @@ MarkerDetailActivity --> CoordinateOnMapIntent : URI
 SettingsActivity --> AboutActivity
 SettingsActivity --> HelpActivity
 SettingsActivity --> ExportActivity
-SettingsActivity --> DirectoryChooserActivity
-SettingsActivity --> DirectoryChooserActivity
+SettingsActivity --> DirectoryChooserActivity$ImportDirectoryChooserActivity
+SettingsActivity --> DirectoryChooserActivity$ExportDirectoryChooserActivity
+SettingsActivity --> DirectoryChooserActivity$DefaultTrackExportDirectoryChooserActivity
 DirectoryChooserActivity$ImportDirectoryChooserActivity --> ImportActivity
 DirectoryChooserActivity$ExportDirectoryChooserActivity --> ExportActivity

@@ -4,7 +4,8 @@ LocationManager --> TrackRecordingService
 ElevationSumManager --> TrackRecordingService

 TrackRecordingService --> TrackRecordingServiceConnection
-TrackRecordingService --> Database
+TrackRecordingService --> CustomContentProvider
+CustomContentProvider --> Database

 Database --> CustomContentProvider
 CustomContentProvider --> TrackDataHub
@@ -8,7 +8,7 @@ class Track {
    -icon
 }
 Track o-- TrackPoint
-Track o-- Waypoint
+Track o-- Marker
 Track "1" - "1" TripStatistics

 class TripStatistics {
@@ -21,7 +21,12 @@ class TripStatistics {
    - totalElevationGain
 }

-class TrackPoint extends android.location.Location {
+note left of TripStatistics
+The time is based upon device time.
+end note
+
+
+class TrackPoint {
    - id
    - trackId
    - longitude
@@ -36,7 +41,32 @@ class TrackPoint extends android.location.Location {
    - sensor_power
 }

-class Waypoint {
+note right of TrackPoint
+TODO
+TrackPoints are mixing two concepts:
+1. a GPS measurement provided by the GPS hardware
+2. and also segment markers.
+   These are marked by PAUSE / RESUME TrackPoints.
+
+While exporting PAUSE/RESUME are not used to create these segments and these are partly recreated when imported.
+However, the timestamp of PAUSE/RESUME is not exported and can therefore not be restored.
+This prevents us from restoring the exact TripStatistics.
+It is also noteworthy that neither PAUSE/RESUME TrackPoints are used for computing the TrackStatistics.
+Only the timestamp to _create_ those is used.
+end note
+
+note left of TrackPoint
+TODO
+The time stored in TrackPoints is either:
+1. created via GPS: provided by the GPS hardware
+2. created by the user (pause/resume): device time.
+
+We know that the GPS time and device time are often not in sync.
+end note
+
+TrackPoint "1" - "1" android.location.Location
+
+class Marker {
    - id
    - trackId
    - name
@@ -0,0 +1,22 @@
+v3.12.0: OpenTracks
+
+Changes:
+- Bluetooth sensor addresses
+- Intervals: show elevation gain
+- Export: default export directory
+- Export: automatic export after finishing a track
+- Manual import/export: new user interface
+- Manual export: option to overwrite on manual export
+
+Faster:
+- Track lists loading
+- Deleting multiple tracks
+
+Bugfix:
+- Fixed intent filters for import
+- KMZ could not be parsed
+- Export: fix crash on Android 11
+
+Developer:
+- Use ViewBindings
+- Database enforces foreign key and uses cascading deletes
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
@@ -82,7 +82,6 @@ esac

 CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar

-
 # Determine the Java command to use to start the JVM.
 if [ -n "$JAVA_HOME" ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
@@ -130,7 +129,6 @@ fi
 if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
-    
    JAVACMD=`cygpath --unix "$JAVACMD"`

    # We build the pattern for arguments to be converted via cygpath
@@ -1,104 +1,103 @@
-@rem
-@rem Copyright 2015 the original author or authors.
-@rem
-@rem Licensed under the Apache License, Version 2.0 (the "License");
-@rem you may not use this file except in compliance with the License.
-@rem You may obtain a copy of the License at
-@rem
-@rem      https://www.apache.org/licenses/LICENSE-2.0
-@rem
-@rem Unless required by applicable law or agreed to in writing, software
-@rem distributed under the License is distributed on an "AS IS" BASIS,
-@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-@rem See the License for the specific language governing permissions and
-@rem limitations under the License.
-@rem
-
-@if "%DEBUG%" == "" @echo off
-@rem ##########################################################################
-@rem
-@rem  Gradle startup script for Windows
-@rem
-@rem ##########################################################################
-
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
-
-set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
-set APP_BASE_NAME=%~n0
-set APP_HOME=%DIRNAME%
-
-@rem Resolve any "." and ".." in APP_HOME to make it shorter.
-for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
-
-@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
-
-@rem Find java.exe
-if defined JAVA_HOME goto findJavaFromJavaHome
-
-set JAVA_EXE=java.exe
-%JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto init
-
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:findJavaFromJavaHome
-set JAVA_HOME=%JAVA_HOME:"=%
-set JAVA_EXE=%JAVA_HOME%/bin/java.exe
-
-if exist "%JAVA_EXE%" goto init
-
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
-
-goto fail
-
-:init
-@rem Get command-line arguments, handling Windows variants
-
-if not "%OS%" == "Windows_NT" goto win9xME_args
-
-:win9xME_args
-@rem Slurp the command line arguments.
-set CMD_LINE_ARGS=
-set _SKIP=2
-
-:win9xME_args_slurp
-if "x%~1" == "x" goto execute
-
-set CMD_LINE_ARGS=%*
-
-:execute
-@rem Setup the command line
-
-set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
-
-
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
-
-:end
-@rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
@@ -109,26 +109,21 @@ public class SearchEngineTest {
        if (hoursAgo >= 0) {
            location.setTime(NOW - hoursAgo * 1000L * 60L * 60L);
        }
-        Marker waypoint = new Marker(location);
+        Marker waypoint = new Marker(trackId, location);
        waypoint.setName(title);
        waypoint.setDescription(description);
        waypoint.setCategory(category);
-        waypoint.setTrackId(trackId);

        Uri uri = providerUtils.insertMarker(waypoint);
        return new Marker.Id(ContentUris.parseId(uri));
    }

-    private Marker.Id insertWaypoint(String title, String description, String category) {
-        return insertWaypoint(title, description, category, 0.0, -1, null);
+    private Marker.Id insertWaypoint(String title, String description, String category, Track.Id trackId) {
+        return insertWaypoint(title, description, category, 0.0, -1, trackId);
    }

-    private Marker.Id insertWaypoint(String title, double distance) {
-        return insertWaypoint(title, "", "", distance, -1, null);
-    }
-
-    private Marker.Id insertWaypoint(String title, long hoursAgo) {
-        return insertWaypoint(title, "", "", 0.0, hoursAgo, null);
+    private Marker.Id insertWaypoint(String title, double distance, Track.Id trackId) {
+        return insertWaypoint(title, "", "", distance, -1, trackId);
    }

    private Marker.Id insertWaypoint(String title, long hoursAgo, Track.Id trackId) {
@@ -170,13 +165,14 @@ public class SearchEngineTest {
        // - one which will match in title and category
        // - one which will match in title and description
        // - one which will match in all fields
-        insertWaypoint("bb", "cc", "dd");
-        Marker.Id descriptionMatchId = insertWaypoint("bb", "aa", "cc");
-        Marker.Id categoryMatchId = insertWaypoint("bb", "cc", "aa");
-        Marker.Id titleMatchId = insertWaypoint("aa", "bb", "cc");
-        Marker.Id titleCategoryMatchId = insertWaypoint("aa", "bb", "ca");
-        Marker.Id titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc");
-        Marker.Id allMatchId = insertWaypoint("aa", "ba", "ca");
+        Track.Id trackId = insertTrack("", "", "");
+        insertWaypoint("bb", "cc", "dd", trackId);
+        Marker.Id descriptionMatchId = insertWaypoint("bb", "aa", "cc", trackId);
+        Marker.Id categoryMatchId = insertWaypoint("bb", "cc", "aa", trackId);
+        Marker.Id titleMatchId = insertWaypoint("aa", "bb", "cc", trackId);
+        Marker.Id titleCategoryMatchId = insertWaypoint("aa", "bb", "ca", trackId);
+        Marker.Id titleDescriptionMatchId = insertWaypoint("aa", "ba", "cc", trackId);
+        Marker.Id allMatchId = insertWaypoint("aa", "ba", "ca", trackId);

        SearchQuery query = new SearchQuery("a", null, null, NOW);
        ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -193,11 +189,11 @@ public class SearchEngineTest {
        // - one waypoint which will match by title
        // - one track which won't match
        // - one track which will match by title
-        Marker.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc");
-        insertWaypoint("bb", "cc", "dd");
-        Marker.Id titleWaypointId = insertWaypoint("aa", "bb", "cc");
-        insertTrack("bb", "cc", "dd");
        Track.Id trackId = insertTrack("aa", "bb", "cc");
+        Marker.Id descriptionWaypointId = insertWaypoint("bb", "aa", "cc", trackId);
+        insertWaypoint("bb", "cc", "dd", trackId);
+        Marker.Id titleWaypointId = insertWaypoint("aa", "bb", "cc", trackId);
+        insertTrack("bb", "cc", "dd");

        SearchQuery query = new SearchQuery("a", null, null, NOW);
        ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -212,9 +208,10 @@ public class SearchEngineTest {
    @Test
    public void testSearchWaypointDistance() {
        // All results match text, but they're at difference distances from the user.
-        Marker.Id farFarAwayId = insertWaypoint("aa", 0.3);
-        Marker.Id nearId = insertWaypoint("ab", 0.1);
-        Marker.Id farId = insertWaypoint("ac", 0.2);
+        Track.Id trackId = insertTrack("", "", "");
+        Marker.Id farFarAwayId = insertWaypoint("aa", 0.3, trackId);
+        Marker.Id nearId = insertWaypoint("ab", 0.1, trackId);
+        Marker.Id farId = insertWaypoint("ac", 0.2, trackId);

        SearchQuery query = new SearchQuery("a", HERE, null, NOW);
        ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -239,9 +236,10 @@ public class SearchEngineTest {
    @Test
    public void testSearchWaypointRecent() {
        // All results match text, but they're were recorded at different times.
-        Marker.Id oldestId = insertWaypoint("aa", 2);
-        Marker.Id recentId = insertWaypoint("ab", 0);
-        Marker.Id oldId = insertWaypoint("ac", 1);
+        Track.Id trackId = insertTrack("", "", "");
+        Marker.Id oldestId = insertWaypoint("aa", 2, trackId);
+        Marker.Id recentId = insertWaypoint("ab", 0, trackId);
+        Marker.Id oldId = insertWaypoint("ac", 1, trackId);

        SearchQuery query = new SearchQuery("a", null, null, NOW);
        ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));
@@ -266,10 +264,13 @@ public class SearchEngineTest {
    @Test
    public void testSearchCurrentTrackWaypoint() {
        // All results match text, but one of them is in the current track.
-        Marker.Id otherId = insertWaypoint("aa", 1, new Track.Id(456));
-        Marker.Id currentId = insertWaypoint("ab", 1, new Track.Id(123));
+        Track.Id trackId1 = insertTrack("", "", "");
+        Track.Id trackId2 = insertTrack("", "", "");

-        SearchQuery query = new SearchQuery("a", null, new Track.Id(123), NOW);
+        Marker.Id otherId = insertWaypoint("aa", 1, trackId2);
+        Marker.Id currentId = insertWaypoint("ab", 1, trackId1);
+
+        SearchQuery query = new SearchQuery("a", null, trackId1, NOW);
        ArrayList<ScoredResult> results = new ArrayList<>(engine.search(query));

        // Waypoint in current track should be promoted.
@@ -316,7 +317,7 @@ public class SearchEngineTest {
            ScoredResult result = results.get(i);
            assertNotNull(errMsg, result.marker);
            assertNull(errMsg, result.track);
-            assertEquals(errMsg, waypointIds[i], result.marker.getId());
+            assertEquals(errMsg, waypointIds[i].getId(), result.marker.getId().getId());
        }
    }
 }
@@ -16,6 +16,7 @@ public class TestDataUtil {
    public static final double INITIAL_LATITUDE = 37.0;
    public static final double INITIAL_LONGITUDE = -57.0;
    public static final double ALTITUDE_INTERVAL = 2.5;
+    public static final float ELEVATION_GAIN = 3;

    /**
     * Create a track without any trackPoints.
@@ -70,7 +71,7 @@ public class TestDataUtil {
        trackPoint.setHeartRate_bpm(100f + i);
        trackPoint.setCyclingCadence_rpm(300f + i);
        trackPoint.setPower(400f + i);
-        trackPoint.setElevationGain(500f + i);
+        trackPoint.setElevationGain(ELEVATION_GAIN);
        return trackPoint;
    }

@@ -212,7 +212,7 @@ public class CustomContentProviderUtilsTest {
        Track.Id trackId = new Track.Id(System.currentTimeMillis());
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);

-        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        contentProviderUtils.insertMarker(waypoint);

        ContentResolver contentResolver = context.getContentResolver();
@@ -287,8 +287,7 @@ public class CustomContentProviderUtilsTest {
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId2, 10);
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId3, 10);

-        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId2));
-        waypoint.setTrackId(trackId1);
+        Marker waypoint = new Marker(trackId1, contentProviderUtils.getLastValidTrackPoint(trackId2));
        contentProviderUtils.insertMarker(waypoint);

        ContentResolver contentResolver = context.getContentResolver();
@@ -463,7 +462,7 @@ public class CustomContentProviderUtilsTest {
        track.first.setTrackStatistics(statistics);
        contentProviderUtils.insertTrack(track.first);

-        Marker waypoint = new Marker(track.second[0]);
+        Marker waypoint = new Marker(trackId, track.second[0]);
        waypoint.setDescription(TEST_DESC);
        contentProviderUtils.insertMarker(waypoint);

@@ -522,9 +521,8 @@ public class CustomContentProviderUtilsTest {
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);

        // Insert at first.
-        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint1 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        waypoint1.setDescription(TEST_DESC);
-        waypoint1.setTrackId(trackId);
        contentProviderUtils.insertMarker(waypoint1);

        // Check insert was done.
@@ -600,14 +598,12 @@ public class CustomContentProviderUtilsTest {
 //        TestDataUtil.insertTrackWithLocations(contentProviderUtils, track);

        // Insert at first.
-        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint1 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        waypoint1.setDescription(MOCK_DESC);
-        waypoint1.setTrackId(trackId);
        Marker.Id waypoint1Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint1)));

-        Marker waypoint2 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint2 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        waypoint2.setDescription(MOCK_DESC);
-        waypoint2.setTrackId(trackId);
        Marker.Id waypoint2Id = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint2)));

        // Delete
@@ -626,14 +622,10 @@ public class CustomContentProviderUtilsTest {
        Track.Id trackId = new Track.Id(System.currentTimeMillis());
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);

-        Marker waypoint1 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
-        waypoint1.setTrackId(trackId);
-        Marker waypoint2 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
-        waypoint2.setTrackId(trackId);
-        Marker waypoint3 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
-        waypoint3.setTrackId(trackId);
-        Marker waypoint4 = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
-        waypoint4.setTrackId(trackId);
+        Marker waypoint1 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint2 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint3 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint4 = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        contentProviderUtils.insertMarker(waypoint1);
        contentProviderUtils.insertMarker(waypoint2);
        contentProviderUtils.insertMarker(waypoint3);
@@ -651,9 +643,8 @@ public class CustomContentProviderUtilsTest {
        Track.Id trackId = new Track.Id(System.currentTimeMillis());
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);

-        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        waypoint.setDescription(TEST_DESC);
-        waypoint.setTrackId(trackId);
        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));

        assertEquals(TEST_DESC, contentProviderUtils.getMarker(waypointId).getDescription());
@@ -668,9 +659,8 @@ public class CustomContentProviderUtilsTest {
        TestDataUtil.createTrackAndInsert(contentProviderUtils, trackId, 10);

        // Insert at first.
-        Marker waypoint = new Marker(contentProviderUtils.getLastValidTrackPoint(trackId));
+        Marker waypoint = new Marker(trackId, contentProviderUtils.getLastValidTrackPoint(trackId));
        waypoint.setDescription(TEST_DESC);
-        waypoint.setTrackId(trackId);
        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));

        // Update
@@ -695,7 +685,6 @@ public class CustomContentProviderUtilsTest {
        TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
        waypoint.setDescription(TEST_DESC);
-        waypoint.setTrackId(trackId);
        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));

        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
@@ -731,7 +720,6 @@ public class CustomContentProviderUtilsTest {
        TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
        waypoint.setDescription(TEST_DESC);
-        waypoint.setTrackId(trackId);
        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));

        File dir = new File(FileUtils.getPhotoDir(context), "" + trackId.getId());
@@ -766,10 +754,8 @@ public class CustomContentProviderUtilsTest {
        TrackPoint trackPoint = contentProviderUtils.getLastValidTrackPoint(trackId);
        Marker waypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
        waypoint.setDescription(TEST_DESC);
-        waypoint.setTrackId(trackId);
        Marker otherWaypoint = TestDataUtil.createWaypointWithPhoto(context, trackId, trackPoint.getLocation());
        otherWaypoint.setDescription(TEST_DESC);
-        otherWaypoint.setTrackId(trackId);
        Marker.Id waypointId = new Marker.Id(ContentUris.parseId(contentProviderUtils.insertMarker(waypoint)));
        contentProviderUtils.insertMarker(otherWaypoint);

@@ -6,7 +6,6 @@ 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;

@@ -38,39 +37,21 @@ public class CustomSQLiteOpenHelperTest {
    private final Context context = ApplicationProvider.getApplicationContext();

    /**
-     * Get the SQL create statements for all tables (ordered by name).
+     * Get the SQL create statements for all SQLite elements of type (ordered by name).
     *
-     * @return Map(TableName, SQL)
+     * @param type index, table
+     * @return Map(name, SQL)
     */
-    @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 + "', '" + MarkerColumns.TABLE_NAME + "')", null, null, null, "name")) {
+    public static Map<String, String> getSQL(SQLiteDatabase db, String type) {
+        HashMap<String, String> sqlMap = new HashMap<>();
+        try (Cursor cursor = db.query("sqlite_master", new String[]{"name", "SQL"}, "type=?", new String[]{type}, null, null, "name")) {
            if (cursor != null) {
                while (cursor.moveToNext()) {
-                    tableSQL.put(cursor.getString(0), cursor.getString(1));
+                    sqlMap.put(cursor.getString(0), cursor.getString(1));
                }
            }
        }
-        return tableSQL;
-    }
-
-    /**
-     * Get the SQL create statements for all indices (ordered by name).
-     *
-     * @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)) {
-            if (cursor != null) {
-                while (cursor.moveToNext()) {
-                    indexSQL.put(cursor.getString(0), cursor.getString(1));
-                }
-            }
-        }
-        return indexSQL;
+        return sqlMap;
    }

    /**
@@ -109,7 +90,7 @@ public class CustomSQLiteOpenHelperTest {
            assertTrue(hasSqlCreate(db, MarkerColumns.CREATE_TABLE));
            assertTrue(hasSqlCreate(db, MarkerColumns.CREATE_TABLE_INDEX));
        } catch (Exception e) {
-            fail();
+            fail("Database could not be created: " + e);
        }
    }

@@ -121,8 +102,8 @@ public class CustomSQLiteOpenHelperTest {
        Map<String, String> tableByUpgrade;
        Map<String, String> indicesByUpgrade;
        try (SQLiteDatabase dbUpgraded = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getReadableDatabase()) {
-            tableByUpgrade = getTableSQL(dbUpgraded);
-            indicesByUpgrade = getIndexSQL(dbUpgraded);
+            tableByUpgrade = getSQL(dbUpgraded, "table");
+            indicesByUpgrade = getSQL(dbUpgraded, "index");
        }
        context.deleteDatabase(DATABASE_NAME);

@@ -130,12 +111,14 @@ public class CustomSQLiteOpenHelperTest {
        Map<String, String> tablesByCreate;
        Map<String, String> indicesByCreate;
        try (SQLiteDatabase dbCreated = new CustomSQLiteOpenHelper(context, DATABASE_NAME).getReadableDatabase()) {
-            tablesByCreate = getTableSQL(dbCreated);
-            indicesByCreate = getIndexSQL(dbCreated);
+            tablesByCreate = getSQL(dbCreated, "table");
+            indicesByCreate = getSQL(dbCreated, "index");
        }

+
        // then - verify table structure
-        assertEquals(3, tableByUpgrade.size());
+        int tableCount = 3 + 2; //Three with data tables + two SQLite
+        assertEquals(tableCount, tableByUpgrade.size());
        assertEquals(tableByUpgrade.size(), tablesByCreate.size());

        assertEquals(tablesByCreate.get(TracksColumns.TABLE_NAME), tableByUpgrade.get(TracksColumns.TABLE_NAME));
@@ -158,8 +141,8 @@ public class CustomSQLiteOpenHelperTest {
        Map<String, String> tablesByDowngrade;
        Map<String, String> indicesByDowngrade;
        try (SQLiteDatabase db = new CustomSQLiteOpenHelper(context, DATABASE_NAME, 23).getReadableDatabase()) {
-            tablesByDowngrade = getTableSQL(db);
-            indicesByDowngrade = getIndexSQL(db);
+            tablesByDowngrade = getSQL(db, "table");
+            indicesByDowngrade = getSQL(db, "index");
        }

        // then - verify table structure
@@ -72,13 +72,12 @@ public class ExportImportTest {
        trackPoints.addAll(Arrays.asList(track.second));

        for (int i = 0; i < 3; i++) {
-            Marker marker = new Marker(track.second[i].getLocation());
+            Marker marker = new Marker(trackId, track.second[i].getLocation());
            marker.setName("the marker " + i);
            marker.setDescription("the marker description " + i);
            marker.setCategory("the marker category" + i);
            marker.setIcon("the marker icon" + i);
            marker.setPhotoUrl("the photo url" + i);
-            marker.setTrackId(trackId);
            contentProviderUtils.insertMarker(marker);

            markers.add(marker);
@@ -90,7 +89,9 @@ public class ExportImportTest {
    @After
    public void tearDown() {
        contentProviderUtils.deleteTrack(context, trackId);
-        contentProviderUtils.deleteTrack(context, importTrackId);
+        if (importTrackId != null) {
+            contentProviderUtils.deleteTrack(context, importTrackId);
+        }
    }

    @LargeTest
@@ -172,7 +173,7 @@ public class ExportImportTest {
    }

    @LargeTest
-    @Test
+    @Test(expected = ImportAlreadyExistsException.class)
    public void kml_with_trackdetail_and_sensordata_duplicate_trackUUID() {
        // given
        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
@@ -261,7 +262,7 @@ public class ExportImportTest {
    }

    @LargeTest
-    @Test
+    @Test(expected = ImportAlreadyExistsException.class)
    public void gpx_duplicate_trackUUID() {
        // given
        PreferencesUtils.setBoolean(context, R.string.import_prevent_reimport_key, true);
@@ -80,7 +80,7 @@ public class IntervalStatisticsTest {
 		// given
 		List<TrackPoint> trackPoints = buildTrackPoints(200);
 		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
-		float distanceInterval = 3000;
+		float distanceInterval = 3000f;
 		IntervalStatistics intervalStatistics = new IntervalStatistics();

 		// when and then
@@ -97,7 +97,7 @@ public class IntervalStatisticsTest {
 		// given
 		List<TrackPoint> trackPoints = buildTrackPoints(1000);
 		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
-		float distanceInterval = 3000;
+		float distanceInterval = 3000f;
 		IntervalStatistics intervalStatistics = new IntervalStatistics();

 		// when and then
@@ -114,7 +114,7 @@ public class IntervalStatisticsTest {
 		// given
 		List<TrackPoint> trackPoints = buildTrackPoints(10000);
 		TrackStatistics trackStatistics = buildTrackStatistics(trackPoints);
-		float distanceInterval = 1000;
+		float distanceInterval = 1000f;
 		IntervalStatistics intervalStatistics = new IntervalStatistics();

 		// when and then
@@ -126,15 +126,18 @@ public class IntervalStatisticsTest {
 		List<IntervalStatistics.Interval> intervalList = intervalStatistics.getIntervalList();
 		double totalDistance = 0d;
 		long totalTime = 0L;
+		float totalGain = 0f;
 		for (IntervalStatistics.Interval i : intervalList) {
 			totalDistance += i.getDistance_m();
 			totalTime += ((i.getDistance_m() / i.getSpeed_ms()) * UnitConversions.S_TO_MS);
+			totalGain += i.getGain_m();
 		}

 		// then
 		assertEquals(trackStatistics.getTotalDistance(), totalDistance, 0.01);
 		assertEquals(trackStatistics.getTotalTime() * UnitConversions.MS_TO_S, totalTime * UnitConversions.MS_TO_S, 0.1);
 		assertEquals(intervalList.size(), (int) Math.ceil(trackStatistics.getTotalDistance() / distanceInterval));
+		assertEquals(totalGain, trackPoints.size() * TestDataUtil.ELEVATION_GAIN, 0.1);
 		for (int i = 0; i < intervalList.size() - 1; i++) {
 			assertEquals(intervalList.get(i).getDistance_m(), distanceInterval, 0.001);
 			totalDistance -= intervalList.get(i).getDistance_m();
@@ -68,38 +68,170 @@ limitations under the License.

        <activity android:name=".io.file.importer.DirectoryChooserActivity$ImportDirectoryChooserActivity" />

-        <activity
-            android:name=".io.file.importer.ImportActivity"
-            android:theme="@style/ThemeCustomTransparentActivity">
+        <activity android:name=".io.file.importer.ImportActivity">

            <intent-filter>
+                <action android:name="android.intent.action.SEND"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="application/gpx+xml"/>
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="application/gpx"/>
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
-                <data android:mimeType="application/vnd.google-earth.kmz" />
-                <data
-                    android:scheme="content"
-                    android:host="*"
-                    android:pathPattern="*kmz" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:mimeType="*/*"/>
+                <data android:pathPattern=".*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:pathPattern=".*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.gpx" />
            </intent-filter>

            <intent-filter>
+                <action android:name="android.intent.action.SEND"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="application/vnd.google-earth.kmz"/>
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
                <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" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:mimeType="*/*"/>
+                <data android:pathPattern=".*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:pathPattern=".*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kmz" />
            </intent-filter>

            <intent-filter>
+                <action android:name="android.intent.action.SEND"/>
+                <category android:name="android.intent.category.DEFAULT"/>
+                <data android:mimeType="application/vnd.google-earth.kml+xml"/>
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
                <category android:name="android.intent.category.DEFAULT" />
-                <data android:mimeType="application/gpx+xml" />
-                <data
-                    android:scheme="content"
-                    android:host="*"
-                    android:pathPattern="*gpx" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:mimeType="*/*"/>
+                <data android:pathPattern=".*\\.kml" />
+                <data android:pathPattern=".*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+            </intent-filter>
+
+            <intent-filter
+                android:label="@string/app_name"
+                android:priority="50">
+                <action android:name="android.intent.action.VIEW" />
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="file"/>
+                <data android:scheme="content"/>
+                <data android:scheme="data"/>
+                <data android:host="*"/>
+                <data android:pathPattern=".*\\.kml" />
+                <data android:pathPattern=".*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
+                <data android:pathPattern=".*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\..*\\.kml" />
            </intent-filter>
        </activity>

@@ -152,10 +284,9 @@ limitations under the License.
        <activity android:name=".AggregatedStatisticsActivity" />

        <activity android:name=".io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserActivity" />
+        <activity android:name=".io.file.importer.DirectoryChooserActivity$DefaultTrackExportDirectoryChooserActivity" />

-        <activity
-            android:name=".io.file.exporter.ExportActivity"
-            android:theme="@style/ThemeCustomTransparentActivity" />
+        <activity android:name=".io.file.exporter.ExportActivity" />

        <activity android:name=".settings.SettingsActivity" />

@@ -195,5 +326,15 @@ limitations under the License.
            android:foregroundServiceType="location|connectedDevice"
            android:icon="@drawable/ic_logo_color_24dp"
            android:label="@string/recording_service" />
+
+        <service
+            android:name=".io.file.exporter.ExportService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
+
+        <service
+            android:name=".io.file.importer.ImportService"
+            android:exported="false"
+            android:permission="android.permission.BIND_JOB_SERVICE" />
    </application>
 </manifest>
@@ -2,38 +2,35 @@ package de.dennisguse.opentracks;

 import android.os.Bundle;
 import android.view.Menu;
-import android.widget.TextView;
+import android.view.View;

 import androidx.annotation.Nullable;

+import de.dennisguse.opentracks.databinding.AboutBinding;
 import de.dennisguse.opentracks.util.SystemUtils;
 import de.dennisguse.opentracks.util.ViewUtils;

 public class AboutActivity extends AbstractActivity {

+    private AboutBinding viewBinding;
+
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setTitle(getString(R.string.about_preference_title));

-        TextView textDescription = findViewById(R.id.about_text_description);
-        textDescription.setText(getString(R.string.about_description));
-
-        TextView textVersionName = findViewById(R.id.about_text_version_name);
-        textVersionName.setText(getString(R.string.about_version_name, SystemUtils.getAppVersionName(this)));
-
-        TextView textVersionCode = findViewById(R.id.about_text_version_code);
-        textVersionCode.setText(getString(R.string.about_version_code, SystemUtils.getAppVersionCode(this)));
-
-        TextView textURL = findViewById(R.id.about_app_url);
-        textURL.setText(getString(R.string.about_url, getString(R.string.app_web_url)));
+        viewBinding.aboutTextDescription.setText(getString(R.string.about_description));
+        viewBinding.aboutTextVersionName.setText(getString(R.string.about_version_name, SystemUtils.getAppVersionName(this)));
+        viewBinding.aboutTextVersionCode.setText(getString(R.string.about_version_code, SystemUtils.getAppVersionCode(this)));
+        viewBinding.aboutAppUrl.setText(getString(R.string.about_url, getString(R.string.app_web_url)));

        ViewUtils.makeClickableLinks(findViewById(android.R.id.content));
    }

-    protected int getLayoutResId() {
-        return R.layout.about;
+    protected View getRootView() {
+        viewBinding = AboutBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -17,6 +17,7 @@
 package de.dennisguse.opentracks;

 import android.os.Bundle;
+import android.view.View;

 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
@@ -35,14 +36,11 @@ public abstract class AbstractActivity extends AppCompatActivity {
        // Set volume control stream for text to speech
        setVolumeControlStream(TTSUtils.getTTSStream());

-        setContentView(getLayoutResId());
+        setContentView(getRootView());

        Toolbar toolbar = findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
    }

-    /**
-     * Gets the layout resource id.
-     */
-    protected abstract int getLayoutResId();
+    protected abstract View getRootView();
 }
@@ -1,37 +1,39 @@
 package de.dennisguse.opentracks;

 import android.os.Bundle;
-import android.widget.ListView;
+import android.view.View;

 import androidx.lifecycle.ViewModelProvider;

 import de.dennisguse.opentracks.adapters.AggregatedStatisticsAdapter;
+import de.dennisguse.opentracks.databinding.AggregatedStatsBinding;
 import de.dennisguse.opentracks.viewmodels.AggregatedStatisticsModel;

 public class AggregatedStatisticsActivity extends AbstractActivity {

-    private ListView listView;
+    private AggregatedStatsBinding viewBinding;
+
    private AggregatedStatisticsAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

-        listView = findViewById(R.id.aggregated_stats_list);
-        listView.setEmptyView(findViewById(R.id.aggregated_stats_empty_view));
+        viewBinding.aggregatedStatsList.setEmptyView(viewBinding.aggregatedStatsEmptyView);

        final AggregatedStatisticsModel viewModel = new ViewModelProvider(this).get(AggregatedStatisticsModel.class);
        viewModel.getAggregatedStats().observe(this, aggregatedStatistics -> {
            if (aggregatedStatistics != null) {
                adapter = new AggregatedStatisticsAdapter(this, aggregatedStatistics);
-                listView.setAdapter(adapter);
+                viewBinding.aggregatedStatsList.setAdapter(adapter);
            }
            adapter.notifyDataSetChanged();
        });
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.aggregated_stats;
+    protected View getRootView() {
+        viewBinding = AggregatedStatsBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }
 }
@@ -1,9 +1,11 @@
 package de.dennisguse.opentracks;

 import android.os.Bundle;
+import android.view.View;

 import androidx.annotation.Nullable;

+import de.dennisguse.opentracks.databinding.HelpBinding;
 import de.dennisguse.opentracks.util.ViewUtils;

 public class HelpActivity extends AbstractActivity {
@@ -15,7 +17,7 @@ public class HelpActivity extends AbstractActivity {
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.help;
+    protected View getRootView() {
+        return HelpBinding.inflate(getLayoutInflater()).getRoot();
    }
 }
@@ -19,6 +19,7 @@ package de.dennisguse.opentracks;
 import android.database.Cursor;
 import android.os.Bundle;
 import android.util.Log;
+import android.view.View;

 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -32,6 +33,7 @@ import java.util.List;

 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.MarkerDetailActivityBinding;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
 import de.dennisguse.opentracks.fragments.MarkerDetailFragment;

@@ -48,6 +50,8 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark

    private static final String TAG = MarkerDetailActivity.class.getSimpleName();

+    private MarkerDetailActivityBinding viewBinding;
+
    private List<Marker.Id> markerIds;

    @Override
@@ -82,10 +86,9 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
            }
        }

-        final ViewPager viewPager = findViewById(R.id.maker_detail_activity_view_pager);
        final MarkerDetailPagerAdapter markerAdapter = new MarkerDetailPagerAdapter(getSupportFragmentManager());
-        viewPager.setAdapter(markerAdapter);
-        viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
+        viewBinding.makerDetailActivityViewPager.setAdapter(markerAdapter);
+        viewBinding.makerDetailActivityViewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {

            @Override
            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
@@ -100,12 +103,13 @@ public class MarkerDetailActivity extends AbstractActivity implements DeleteMark
            public void onPageScrollStateChanged(int state) {
            }
        });
-        viewPager.setCurrentItem(markerIndex == -1 ? 0 : markerIndex);
+        viewBinding.makerDetailActivityViewPager.setCurrentItem(markerIndex == -1 ? 0 : markerIndex);
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.marker_detail_activity;
+    protected View getRootView() {
+        viewBinding = MarkerDetailActivityBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -30,15 +30,10 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ArrayAdapter;
-import android.widget.AutoCompleteTextView;
-import android.widget.Button;
-import android.widget.ImageView;
 import android.widget.Toast;

 import androidx.annotation.NonNull;

-import com.google.android.material.textfield.TextInputEditText;
-
 import java.io.File;
 import java.io.FileDescriptor;
 import java.io.IOException;
@@ -46,6 +41,7 @@ import java.io.IOException;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.MarkerEditBinding;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
@@ -67,7 +63,7 @@ public class MarkerEditActivity extends AbstractActivity {

    private static final String TAG = MarkerEditActivity.class.getSimpleName();
    private Track.Id trackId;
-    private TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
+    private final TrackRecordingServiceConnection trackRecordingServiceConnection = new TrackRecordingServiceConnection();
    private Marker marker;

    private MenuItem insertPhotoMenuItem;
@@ -77,11 +73,7 @@ public class MarkerEditActivity extends AbstractActivity {
    private boolean hasCamera;

    // UI elements
-    private TextInputEditText markerName;
-    private AutoCompleteTextView markerType;
-    private TextInputEditText markerDescription;
-    private ImageView markerPhoto;
-    private ImageView markerDeletePhotoBtn;
+    private MarkerEditBinding viewBinding;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
@@ -93,32 +85,24 @@ public class MarkerEditActivity extends AbstractActivity {
        hasCamera = getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_ANY);

        // Setup UI elements
-        markerName = findViewById(R.id.marker_edit_name);
-        markerType = findViewById(R.id.marker_edit_marker_type);
        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.marker_types, android.R.layout.simple_dropdown_item_1line);
-        markerType.setAdapter(adapter);
-        markerDescription = findViewById(R.id.marker_edit_description);
-        markerPhoto = findViewById(R.id.marker_edit_photo);
-
-        markerDeletePhotoBtn = findViewById(R.id.marker_edit_photo_delete);
-        markerDeletePhotoBtn.setOnClickListener(v -> {
+        viewBinding.markerEditMarkerType.setAdapter(adapter);
+        viewBinding.markerEditPhotoDelete.setOnClickListener(v -> {
            if (marker != null && marker.hasPhoto()) {
                marker.setPhotoUrl(null);
            }
-            markerPhoto.setImageBitmap(null);
+            viewBinding.markerEditPhoto.setImageBitmap(null);
            photoUri = null;
            hideAndShowOptions();
        });

-        Button cancel = findViewById(R.id.marker_edit_cancel);
-        cancel.setOnClickListener(v -> finish());
+        viewBinding.markerEditCancel.setOnClickListener(v -> finish());

        final boolean isNewMarker = markerId == 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 -> {
+        viewBinding.markerEditDone.setText(isNewMarker ? R.string.generic_add : R.string.generic_save);
+        viewBinding.markerEditDone.setOnClickListener(v -> {
            if (isNewMarker) {
                addMarker();
            } else {
@@ -132,10 +116,10 @@ public class MarkerEditActivity extends AbstractActivity {
            if (nextMarkerNumber == -1) {
                nextMarkerNumber = 0;
            }
-            markerName.setText(getString(R.string.marker_name_format, nextMarkerNumber));
-            markerName.selectAll();
-            markerType.setText("");
-            markerDescription.setText("");
+            viewBinding.markerEditName.setText(getString(R.string.marker_name_format, nextMarkerNumber));
+            viewBinding.markerEditName.selectAll();
+            viewBinding.markerEditMarkerType.setText("");
+            viewBinding.markerEditDescription.setText("");
        } else {
            marker = new ContentProviderUtils(this).getMarker(markerId);
            if (marker == null) {
@@ -143,9 +127,9 @@ public class MarkerEditActivity extends AbstractActivity {
                finish();
                return;
            }
-            markerName.setText(marker.getName());
-            markerType.setText(marker.getCategory());
-            markerDescription.setText(marker.getDescription());
+            viewBinding.markerEditName.setText(marker.getName());
+            viewBinding.markerEditMarkerType.setText(marker.getCategory());
+            viewBinding.markerEditDescription.setText(marker.getDescription());
            if (marker.hasPhoto()) {
                photoUri = marker.getPhotoURI();
            }
@@ -183,8 +167,9 @@ public class MarkerEditActivity extends AbstractActivity {
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.marker_edit;
+    protected View getRootView() {
+        viewBinding = MarkerEditBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -256,7 +241,7 @@ public class MarkerEditActivity extends AbstractActivity {
            insertPhotoMenuItem.setVisible(!isPhotoSet);
            insertGalleryImgMenuItem.setVisible(!isPhotoSet);
        }
-        markerDeletePhotoBtn.setVisibility(isPhotoSet ? View.VISIBLE : View.GONE);
+        viewBinding.markerEditPhotoDelete.setVisibility(isPhotoSet ? View.VISIBLE : View.GONE);
    }

    /**
@@ -270,7 +255,7 @@ public class MarkerEditActivity extends AbstractActivity {
        try (ParcelFileDescriptor pfd = getContentResolver().openFileDescriptor(uri, "r")) {
            FileDescriptor fd = pfd.getFileDescriptor();
            Bitmap bitmap = BitmapFactory.decodeFileDescriptor(fd);
-            markerPhoto.setImageBitmap(bitmap);
+            viewBinding.markerEditPhoto.setImageBitmap(bitmap);
            hideAndShowOptions();
        } catch (IOException e) {
            Log.e(TAG, e.getMessage());
@@ -291,16 +276,16 @@ public class MarkerEditActivity extends AbstractActivity {

    private void addMarker() {
        trackRecordingServiceConnection.addMarker(this,
-                markerName.getText().toString(),
-                markerType.getText().toString(),
-                markerDescription.getText().toString(),
+                viewBinding.markerEditName.getText().toString(),
+                viewBinding.markerEditMarkerType.getText().toString(),
+                viewBinding.markerEditDescription.getText().toString(),
                photoUri != null ? photoUri.toString() : null);
    }

    private void saveMarker() {
-        marker.setName(markerName.getText().toString());
-        marker.setCategory(markerType.getText().toString());
-        marker.setDescription(markerDescription.getText().toString());
+        marker.setName(viewBinding.markerEditName.getText().toString());
+        marker.setCategory(viewBinding.markerEditMarkerType.getText().toString());
+        marker.setDescription(viewBinding.markerEditDescription.getText().toString());
        marker.setPhotoUrl(photoUri != null ? photoUri.toString() : null);

        new ContentProviderUtils(this).updateMarker(this, marker);
@@ -26,7 +26,6 @@ import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
-import android.widget.ListView;

 import androidx.annotation.NonNull;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
@@ -38,6 +37,7 @@ import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.MarkerListBinding;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
 import de.dennisguse.opentracks.util.ActivityUtils;
@@ -81,8 +81,9 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
    };
    private Track track;
    private ResourceCursorAdapter resourceCursorAdapter;
-    // UI elements
-    private ListView listView;
+
+    private MarkerListBinding viewBinding;
+
    // Callback when an item is selected in the contextual action mode
    private final ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
        @Override
@@ -120,9 +121,8 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker

        track = trackId != null ? contentProviderUtils.getTrack(trackId) : null;

-        listView = findViewById(R.id.marker_list);
-        listView.setEmptyView(findViewById(R.id.marker_list_empty));
-        listView.setOnItemClickListener((parent, view, position, id) -> {
+        viewBinding.markerList.setEmptyView(viewBinding.markerListEmpty);
+        viewBinding.markerList.setOnItemClickListener((parent, view, position, id) -> {
            Intent intent = IntentUtils.newIntent(MarkerListActivity.this, MarkerDetailActivity.class)
                    .putExtra(MarkerDetailActivity.EXTRA_MARKER_ID, new Marker.Id(id));
            startActivity(intent);
@@ -151,8 +151,8 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
                ListItemUtils.setListItem(MarkerListActivity.this, view, false, true, iconId, R.string.image_marker, name, null, null, 0, time, false, category, description, photoUrl);
            }
        };
-        listView.setAdapter(resourceCursorAdapter);
-        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        viewBinding.markerList.setAdapter(resourceCursorAdapter);
+        ActivityUtils.configureListViewContextualMenu(viewBinding.markerList, contextualActionModeCallback);

        LoaderManager.getInstance(this).initLoader(0, null, new LoaderCallbacks<Cursor>() {
            @NonNull
@@ -193,8 +193,9 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.marker_list;
+    protected View getRootView() {
+        viewBinding = MarkerListBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -254,14 +255,14 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
                }
                return true;
            case R.id.list_context_menu_delete:
-                if (markerIds.length > 1 && markerIds.length == listView.getCount()) {
+                if (markerIds.length > 1 && markerIds.length == viewBinding.markerList.getCount()) {
                    markerIds = null;
                }
                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), markerIds);
                return true;
            case R.id.list_context_menu_select_all:
-                for (int i = 0; i < listView.getCount(); i++) {
-                    listView.setItemChecked(i, true);
+                for (int i = 0; i < viewBinding.markerList.getCount(); i++) {
+                    viewBinding.markerList.setItemChecked(i, true);
                }
                return false;
            default:
@@ -27,7 +27,6 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.ArrayAdapter;
-import android.widget.ListView;

 import androidx.annotation.NonNull;

@@ -44,6 +43,7 @@ import de.dennisguse.opentracks.content.SearchEngine.SearchQuery;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.SearchListBinding;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
@@ -101,6 +101,8 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa

    private boolean recordingTrackPaused;

+    private SearchListBinding viewBinding;
+
    // Callback when an item is selected in the contextual action mode
    private final ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
        @Override
@@ -198,10 +200,9 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
            }
        };
        // UI elements
-        ListView listView = findViewById(R.id.search_list);
-        listView.setAdapter(arrayAdapter);
-        listView.setEmptyView(findViewById(R.id.search_list_empty));
-        listView.setOnItemClickListener((parent, view, position, id) -> {
+        viewBinding.searchList.setEmptyView(viewBinding.searchListEmpty);
+        viewBinding.searchList.setAdapter(arrayAdapter);
+        viewBinding.searchList.setOnItemClickListener((parent, view, position, id) -> {
            Map<String, Object> item = arrayAdapter.getItem(position);
            Track.Id trackId = (Track.Id) item.get(TRACK_ID_FIELD);
            Marker.Id markerId = (Marker.Id) item.get(MARKER_ID_FIELD);
@@ -213,7 +214,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
            }
            startActivity(intent);
        });
-        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(viewBinding.searchList, contextualActionModeCallback);
        handleIntent(getIntent());
    }

@@ -239,8 +240,9 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.search_list;
+    protected View getRootView() {
+        viewBinding = SearchListBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -26,11 +26,11 @@ 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.databinding.TrackControllerBinding;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
 import de.dennisguse.opentracks.util.ActivityUtils;
@@ -49,14 +49,11 @@ public class TrackController {
    private final Activity activity;
    private final TrackRecordingServiceConnection trackRecordingServiceConnection;
    private final Handler handlerUpdateTotalTime;
-    private final View containerView;
-    private final TextView statusTextView;
-    private final TextView totalTimeTextView;
-    private final ImageButton recordImageButton;
-    private final ImageButton stopImageButton;
    private final boolean alwaysShow;
    private ButtonDelay buttonDelay;

+    private final TrackControllerBinding viewBinding;
+
    private boolean isRecording;
    private boolean isPaused;
    private long totalTime = 0;
@@ -69,37 +66,32 @@ public class TrackController {
    private final Runnable updateTotalTimeRunnable = new Runnable() {
        public void run() {
            if (isResumed && isRecording && !isPaused) {
-                totalTimeTextView.setText(StringUtils.formatElapsedTimeWithHour(System.currentTimeMillis() - totalTimeTimestamp + totalTime));
+                viewBinding.trackControllerTotalTime.setText(StringUtils.formatElapsedTimeWithHour(System.currentTimeMillis() - totalTimeTimestamp + totalTime));
                handlerUpdateTotalTime.postDelayed(this, UnitConversions.ONE_SECOND_MS);
            }
        }
    };

    @SuppressLint("ClickableViewAccessibility")
-    TrackController(Activity activity, TrackRecordingServiceConnection trackRecordingServiceConnection, boolean alwaysShow, OnClickListener recordListener, OnClickListener stopListener) {
+    TrackController(Activity activity, TrackControllerBinding viewBinding, TrackRecordingServiceConnection trackRecordingServiceConnection, boolean alwaysShow, OnClickListener recordListener, OnClickListener stopListener) {
        this.activity = activity;
+        this.viewBinding = viewBinding;
        this.trackRecordingServiceConnection = trackRecordingServiceConnection;
        this.alwaysShow = alwaysShow;
        handlerUpdateTotalTime = new Handler();
-        containerView = activity.findViewById(R.id.track_controller_container);
-        statusTextView = activity.findViewById(R.id.track_controller_status);
-        totalTimeTextView = activity.findViewById(R.id.track_controller_total_time);
+        viewBinding.trackControllerRecord.setOnTouchListener((view, motionEvent) -> onRecordTouch(activity, recordListener, motionEvent));

-        recordImageButton = activity.findViewById(R.id.track_controller_record);
-        recordImageButton.setOnTouchListener((view, motionEvent) -> onRecordTouch(activity, recordListener, motionEvent));
-
-        stopImageButton = activity.findViewById(R.id.track_controller_stop);
-        stopImageButton.setOnTouchListener((view, motionEvent) -> onStopTouch(activity, stopListener, motionEvent));
+        viewBinding.trackControllerStop.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);
+                buttonDelay = new ButtonDelay(activity, viewBinding.trackControllerRecord, 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);
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
+                viewBinding.trackControllerRecord.setImageResource(R.drawable.ic_button_pause);
                if (buttonDelay != null) {
                    buttonDelay.canceled = true;
                }
@@ -115,11 +107,11 @@ public class TrackController {
    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);
+                buttonDelay = new ButtonDelay(activity, viewBinding.trackControllerStop, 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);
+            } else if (motionEvent.getAction() == MotionEvent.ACTION_UP) {
+                viewBinding.trackControllerStop.setImageResource(R.drawable.ic_button_stop);
                if (buttonDelay != null) {
                    buttonDelay.canceled = true;
                }
@@ -151,7 +143,7 @@ public class TrackController {

        @Override
        public void run() {
-            activity.runOnUiThread(()->{
+            activity.runOnUiThread(() -> {
                imageButton.setImageDrawable(drawable);
                if (drawable instanceof AnimatedVectorDrawable) {
                    ((AnimatedVectorDrawable) drawable).start();
@@ -165,7 +157,7 @@ public class TrackController {
            } catch (InterruptedException ignored) {
            }
            if (!canceled) {
-                activity.runOnUiThread(()-> {
+                activity.runOnUiThread(() -> {
                    clickListener.onClick(null);
                    ActivityUtils.vibrate(activity, 1000);
                });
@@ -180,30 +172,30 @@ public class TrackController {
        isRecording = recording;
        isPaused = paused;
        boolean visible = alwaysShow || isRecording;
-        containerView.setVisibility(visible ? View.VISIBLE : View.GONE);
+        viewBinding.trackControllerContainer.setVisibility(visible ? View.VISIBLE : View.GONE);

        if (!visible) {
            handlerUpdateTotalTime.removeCallbacks(updateTotalTimeRunnable);
            return;
        }

-        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));
+        viewBinding.trackControllerRecord.setImageResource(isRecording && !isPaused ? R.drawable.ic_button_pause : R.drawable.button_record);
+        viewBinding.trackControllerRecord.setContentDescription(activity.getString(isRecording && !isPaused ? R.string.image_pause : R.string.image_record));

-        stopImageButton.setImageResource(isRecording ? R.drawable.ic_button_stop : R.drawable.ic_button_stop_disabled);
-        stopImageButton.setEnabled(isRecording);
+        viewBinding.trackControllerStop.setImageResource(isRecording ? R.drawable.ic_button_stop : R.drawable.ic_button_stop_disabled);
+        viewBinding.trackControllerStop.setEnabled(isRecording);

-        statusTextView.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);
+        viewBinding.trackControllerStatus.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);
        if (isRecording) {
-            statusTextView.setTextColor(activity.getResources().getColor(isPaused ? android.R.color.white : R.color.recording_text));
-            statusTextView.setText(isPaused ? R.string.generic_paused : R.string.generic_recording);
+            viewBinding.trackControllerStatus.setTextColor(activity.getResources().getColor(isPaused ? android.R.color.white : R.color.recording_text));
+            viewBinding.trackControllerStatus.setText(isPaused ? R.string.generic_paused : R.string.generic_recording);
        }

        handlerUpdateTotalTime.removeCallbacks(updateTotalTimeRunnable);
-        totalTimeTextView.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);
+        viewBinding.trackControllerTotalTime.setVisibility(isRecording ? View.VISIBLE : View.INVISIBLE);
        if (isRecording) {
            totalTime = getTotalTime();
-            totalTimeTextView.setText(StringUtils.formatElapsedTimeWithHour(totalTime));
+            viewBinding.trackControllerTotalTime.setText(StringUtils.formatElapsedTimeWithHour(totalTime));
            if (!isPaused) {
                totalTimeTimestamp = System.currentTimeMillis();
                handlerUpdateTotalTime.postDelayed(updateTotalTimeRunnable, UnitConversions.ONE_SECOND_MS);
@@ -222,11 +214,11 @@ public class TrackController {
    }

    public void hide() {
-        containerView.setVisibility(View.GONE);
+        viewBinding.trackControllerContainer.setVisibility(View.GONE);
    }

    public void show() {
-        containerView.setVisibility(View.VISIBLE);
+        viewBinding.trackControllerContainer.setVisibility(View.VISIBLE);
    }

    /**
@@ -25,6 +25,7 @@ import java.util.List;

 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.TrackDeleteBinding;
 import de.dennisguse.opentracks.util.SystemUtils;

 /**
@@ -40,6 +41,8 @@ public class TrackDeleteActivity extends AbstractActivity {

    private Thread deleteThread;

+    private TrackDeleteBinding viewBinding;
+
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
@@ -52,13 +55,7 @@ public class TrackDeleteActivity extends AbstractActivity {
            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(TrackDeleteActivity.this);

            PowerManager.WakeLock wakeLock = SystemUtils.acquireWakeLock(TrackDeleteActivity.this, null);
-
-            for (Track.Id id : trackIds) {
-                if (Thread.interrupted()) {
-                    break;
-                }
-                contentProviderUtils.deleteTrack(TrackDeleteActivity.this, id);
-            }
+            contentProviderUtils.deleteTracks(TrackDeleteActivity.this, trackIds);

            wakeLock = SystemUtils.releaseWakeLock(wakeLock);
            if (Thread.interrupted()) {
@@ -82,12 +79,13 @@ public class TrackDeleteActivity extends AbstractActivity {
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.track_delete;
+    protected View getRootView() {
+        viewBinding = TrackDeleteBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    public void onAsyncTaskCompleted() {
-        findViewById(R.id.progressbar).setVisibility(View.INVISIBLE);
+        viewBinding.progressbar.setVisibility(View.INVISIBLE);
        setResult(RESULT_OK);
        finish();
    }
@@ -22,16 +22,12 @@ import android.view.KeyEvent;
 import android.view.MotionEvent;
 import android.view.View;
 import android.widget.ArrayAdapter;
-import android.widget.AutoCompleteTextView;
-import android.widget.Button;
-import android.widget.Spinner;

 import androidx.annotation.NonNull;

-import com.google.android.material.textfield.TextInputEditText;
-
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.TrackEditBinding;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.util.TrackIconUtils;
@@ -56,10 +52,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
    private Track track;
    private String iconValue;

-    private TextInputEditText nameEditText;
-    private AutoCompleteTextView activityType;
-    private Spinner activityTypeIcon;
-    private TextInputEditText description;
+    private TrackEditBinding viewBinding;

    @Override
    protected void onCreate(Bundle bundle) {
@@ -81,20 +74,17 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
            return;
        }

-        nameEditText = findViewById(R.id.track_edit_name);
-        nameEditText.setText(track.getName());
+        viewBinding.trackEditName.setText(track.getName());

-        activityType = findViewById(R.id.track_edit_activity_type);
-        activityType.setText(track.getCategory());
+        viewBinding.trackEditActivityType.setText(track.getCategory());

        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this, R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
-        activityType.setAdapter(adapter);
-        activityType.setOnItemClickListener((parent, view, position, id) -> setActivityTypeIcon(TrackIconUtils.getIconValue(
-                TrackEditActivity.this, (String) activityType.getAdapter().getItem(position))));
-        activityType.setOnFocusChangeListener((v, hasFocus) -> {
+        viewBinding.trackEditActivityType.setAdapter(adapter);
+        viewBinding.trackEditActivityType.setOnItemClickListener((parent, view, position, id) -> setActivityTypeIcon(TrackIconUtils.getIconValue(this, (String) viewBinding.trackEditActivityType.getAdapter().getItem(position))));
+        viewBinding.trackEditActivityType.setOnFocusChangeListener((v, hasFocus) -> {
            if (!hasFocus) {
                setActivityTypeIcon(TrackIconUtils.getIconValue(
-                        TrackEditActivity.this, activityType.getText().toString()));
+                        TrackEditActivity.this, viewBinding.trackEditActivityType.getText().toString()));
            }
        });

@@ -106,40 +96,36 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
            iconValue = track.getIcon();
        }

-        activityTypeIcon = findViewById(R.id.track_edit_activity_type_icon);
-        activityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(this, iconValue));
-        activityTypeIcon.setOnTouchListener((v, event) -> {
+        viewBinding.trackEditActivityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(this, iconValue));
+        viewBinding.trackEditActivityTypeIcon.setOnTouchListener((v, event) -> {
            if (event.getAction() == MotionEvent.ACTION_UP) {
-                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
+                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), viewBinding.trackEditActivityType.getText().toString());
            }
            return true;
        });
-        activityTypeIcon.setOnKeyListener((v, keyCode, event) -> {
+        viewBinding.trackEditActivityTypeIcon.setOnKeyListener((v, keyCode, event) -> {
            if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
-                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
+                ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), viewBinding.trackEditActivityType.getText().toString());
            }
            return true;
        });

-        description = findViewById(R.id.track_edit_description);
-        description.setText(track.getDescription());
+        viewBinding.trackEditDescription.setText(track.getDescription());

-        Button saveButton = findViewById(R.id.track_edit_save);
-        saveButton.setOnClickListener(v -> {
-            TrackUtils.updateTrack(TrackEditActivity.this, track, nameEditText.getText().toString(),
-                    activityType.getText().toString(), description.getText().toString(),
+        viewBinding.trackEditSave.setOnClickListener(v -> {
+            TrackUtils.updateTrack(TrackEditActivity.this, track, viewBinding.trackEditName.getText().toString(),
+                    viewBinding.trackEditActivityType.getText().toString(), viewBinding.trackEditDescription.getText().toString(),
                    contentProviderUtils);
            finish();
        });

-        Button cancel = findViewById(R.id.track_edit_cancel);
        if (getIntent().getBooleanExtra(EXTRA_NEW_TRACK, false)) {
            setTitle(R.string.track_edit_new_track_title);
-            cancel.setVisibility(View.GONE);
+            viewBinding.trackEditCancel.setVisibility(View.GONE);
        } else {
            setTitle(R.string.menu_edit);
-            cancel.setOnClickListener(v -> finish());
-            cancel.setVisibility(View.VISIBLE);
+            viewBinding.trackEditCancel.setOnClickListener(v -> finish());
+            viewBinding.trackEditCancel.setVisibility(View.VISIBLE);
        }
    }

@@ -163,18 +149,19 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.track_edit;
+    protected View getRootView() {
+        viewBinding = TrackEditBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

-    private void setActivityTypeIcon(String value) {
-        iconValue = value;
-        TrackIconUtils.setIconSpinner(activityTypeIcon, value);
+    private void setActivityTypeIcon(String iconValue) {
+        this.iconValue = iconValue;
+        TrackIconUtils.setIconSpinner(viewBinding.trackEditActivityTypeIcon, iconValue);
    }

    @Override
    public void onChooseActivityTypeDone(String value) {
        setActivityTypeIcon(value);
-        activityType.setText(getString(TrackIconUtils.getIconActivityType(value)));
+        viewBinding.trackEditActivityType.setText(getString(TrackIconUtils.getIconActivityType(value)));
    }
 }
@@ -34,7 +34,6 @@ import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
-import android.widget.ListView;
 import android.widget.Toast;

 import androidx.annotation.NonNull;
@@ -43,11 +42,12 @@ import androidx.core.app.ActivityCompat;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
 import androidx.loader.app.LoaderManager.LoaderCallbacks;
+import androidx.loader.content.CursorLoader;
 import androidx.loader.content.Loader;

 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.TrackListBinding;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
@@ -60,6 +60,7 @@ import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 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.
@@ -71,18 +72,22 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
    private static final String TAG = TrackListActivity.class.getSimpleName();

    // The following are set in onCreate
-    private ContentProviderUtils contentProviderUtils;
    private SharedPreferences sharedPreferences;
    private TrackRecordingServiceConnection trackRecordingServiceConnection;
    private TrackController trackController;
-    private ListView listView;
    private ResourceCursorAdapter resourceCursorAdapter;
    private GpsStatusValue gpsStatusValue;

+    private TrackListBinding viewBinding;
+
    private final LoaderCallbacks<Cursor> loaderCallbacks = new LoaderCallbacks<Cursor>() {
        @Override
        public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
-            return ContentProviderUtils.getTracksCursorLoader(TrackListActivity.this);
+            String[] PROJECTION = new String[]{TracksColumns._ID, TracksColumns.NAME,
+                    TracksColumns.DESCRIPTION, TracksColumns.CATEGORY, TracksColumns.STARTTIME,
+                    TracksColumns.TOTALDISTANCE, TracksColumns.TOTALTIME, TracksColumns.ICON, "markerCount"};
+
+            return new CursorLoader(TrackListActivity.this, TracksColumns.CONTENT_URI, PROJECTION, null, null, TrackUtils.TRACK_SORT_ORDER);
        }

        @Override
@@ -223,11 +228,10 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe

        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);

-        contentProviderUtils = new ContentProviderUtils(this);
        sharedPreferences = PreferencesUtils.getSharedPreferences(this);

        trackRecordingServiceConnection = new TrackRecordingServiceConnection(bindChangedCallback);
-        trackController = new TrackController(this, trackRecordingServiceConnection, true, recordListener, stopListener);
+        trackController = new TrackController(this, viewBinding.trackControllerContainer, trackRecordingServiceConnection, true, recordListener, stopListener);

        setDefaultKeyMode(DEFAULT_KEYS_SEARCH_LOCAL);

@@ -237,9 +241,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
            searchManager.setOnDismissListener(() -> trackController.show());
        }

-        listView = findViewById(R.id.track_list);
-        listView.setEmptyView(findViewById(R.id.track_list_empty_view));
-        listView.setOnItemClickListener((parent, view, position, trackId) -> {
+        viewBinding.trackList.setEmptyView(viewBinding.trackListEmptyView);
+        viewBinding.trackList.setOnItemClickListener((parent, view, position, trackId) -> {
            Intent newIntent;
            if (trackId == recordingTrackId.getId()) {
                // Is recording -> open record activity.
@@ -256,14 +259,15 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
        resourceCursorAdapter = new ResourceCursorAdapter(this, R.layout.list_item, null, 0) {
            @Override
            public void bindView(View view, Context context, Cursor cursor) {
-                int idIndex = cursor.getColumnIndex(TracksColumns._ID);
-                int iconIndex = cursor.getColumnIndex(TracksColumns.ICON);
-                int nameIndex = cursor.getColumnIndex(TracksColumns.NAME);
+                int idIndex = cursor.getColumnIndexOrThrow(TracksColumns._ID);
+                int iconIndex = cursor.getColumnIndexOrThrow(TracksColumns.ICON);
+                int nameIndex = cursor.getColumnIndexOrThrow(TracksColumns.NAME);
                int totalTimeIndex = cursor.getColumnIndexOrThrow(TracksColumns.TOTALTIME);
                int totalDistanceIndex = cursor.getColumnIndexOrThrow(TracksColumns.TOTALDISTANCE);
                int startTimeIndex = cursor.getColumnIndexOrThrow(TracksColumns.STARTTIME);
-                int categoryIndex = cursor.getColumnIndex(TracksColumns.CATEGORY);
-                int descriptionIndex = cursor.getColumnIndex(TracksColumns.DESCRIPTION);
+                int categoryIndex = cursor.getColumnIndexOrThrow(TracksColumns.CATEGORY);
+                int descriptionIndex = cursor.getColumnIndexOrThrow(TracksColumns.DESCRIPTION);
+                int markerCountIndex = cursor.getColumnIndexOrThrow(TracksColumns.MARKER_COUNT);

                Track.Id trackId = new Track.Id(cursor.getLong(idIndex));
                boolean isRecording = trackId.equals(recordingTrackId);
@@ -272,7 +276,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                String name = cursor.getString(nameIndex);
                String totalTime = StringUtils.formatElapsedTime(cursor.getLong(totalTimeIndex));
                String totalDistance = StringUtils.formatDistance(TrackListActivity.this, cursor.getDouble(totalDistanceIndex), metricUnits);
-                int markerCount = contentProviderUtils.getMarkerCount(trackId);
+                int markerCount = cursor.getInt(markerCountIndex);
                long startTime = cursor.getLong(startTimeIndex);
                String category = icon != null && !icon.equals("") ? null : cursor.getString(categoryIndex);
                String description = cursor.getString(descriptionIndex);
@@ -282,9 +286,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                        startTime, true, category, description, null);
            }
        };
-        listView.setAdapter(resourceCursorAdapter);
+        viewBinding.trackList.setAdapter(resourceCursorAdapter);

-        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(viewBinding.trackList, contextualActionModeCallback);

        LoaderManager.getInstance(this).initLoader(0, null, loaderCallbacks);

@@ -338,8 +342,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.track_list;
+    protected View getRootView() {
+        viewBinding = TrackListBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -503,9 +508,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                deleteTracks(trackIds);
                return true;
            case R.id.list_context_menu_select_all:
-                int size = listView.getCount();
+                int size = viewBinding.trackList.getCount();
                for (int i = 0; i < size; i++) {
-                    listView.setItemChecked(i, true);
+                    viewBinding.trackList.setItemChecked(i, true);
                }
                return false;
        }
@@ -21,21 +21,19 @@ import android.os.Bundle;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentPagerAdapter;
-import androidx.viewpager.widget.ViewPager;
-
-import com.google.android.material.tabs.TabLayout;

 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.TrackRecordedBinding;
 import de.dennisguse.opentracks.fragments.ChartFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.IntervalsFragment;
 import de.dennisguse.opentracks.fragments.StatisticsRecordedFragment;
@@ -44,8 +42,6 @@ import de.dennisguse.opentracks.settings.SettingsActivity;
 import de.dennisguse.opentracks.util.IntentDashboardUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.TrackIconUtils;
-import de.dennisguse.opentracks.util.TrackUtils;

 /**
 * An activity to show the track detail, record a new track or resumes an existing one.
@@ -53,7 +49,7 @@ import de.dennisguse.opentracks.util.TrackUtils;
 * @author Leif Hendrik Wilden
 * @author Rodrigo Damazio
 */
-public class TrackRecordedActivity extends AbstractListActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller, ConfirmDeleteDialogFragment.ConfirmDeleteCaller, TrackActivityDataHubInterface {
+public class TrackRecordedActivity extends AbstractListActivity implements ConfirmDeleteDialogFragment.ConfirmDeleteCaller, TrackActivityDataHubInterface {

    private static final String TAG = TrackRecordedActivity.class.getSimpleName();

@@ -65,7 +61,8 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
    // The following are set in onCreate.
    private ContentProviderUtils contentProviderUtils;
    private TrackDataHub trackDataHub;
-    private ViewPager pager;
+
+    private TrackRecordedBinding viewBinding;

    private Track.Id trackId;

@@ -78,12 +75,10 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos

        trackDataHub = new TrackDataHub(this);

-        pager = findViewById(R.id.track_detail_activity_view_pager);
-        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
-        TabLayout tabs = findViewById(R.id.track_detail_activity_tablayout);
-        tabs.setupWithViewPager(pager);
+        viewBinding.trackDetailActivityViewPager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
+        viewBinding.trackDetailActivityTablayout.setupWithViewPager(viewBinding.trackDetailActivityViewPager);
        if (savedInstanceState != null) {
-            pager.setCurrentItem(savedInstanceState.getInt(CURRENT_TAB_TAG_KEY));
+            viewBinding.trackDetailActivityViewPager.setCurrentItem(savedInstanceState.getInt(CURRENT_TAB_TAG_KEY));
        }
    }

@@ -114,12 +109,13 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
-        outState.putInt(CURRENT_TAB_TAG_KEY, pager.getCurrentItem());
+        outState.putInt(CURRENT_TAB_TAG_KEY, viewBinding.trackDetailActivityViewPager.getCurrentItem());
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.track_detail;
+    protected View getRootView() {
+        viewBinding = TrackRecordedBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -224,17 +220,6 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
        }
    }

-    public void chooseActivityType(String category) {
-        ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), category);
-    }
-
-    @Override
-    public void onChooseActivityTypeDone(String iconValue) {
-        String category = getString(TrackIconUtils.getIconActivityType(iconValue));
-        Track track = contentProviderUtils.getTrack(trackId);
-        TrackUtils.updateTrack(this, track, null, category, null, contentProviderUtils);
-    }
-
    private class CustomFragmentPagerAdapter extends FragmentPagerAdapter {

        public CustomFragmentPagerAdapter(@NonNull FragmentManager fm, int behavior) {
@@ -253,7 +238,7 @@ public class TrackRecordedActivity extends AbstractListActivity implements Choos
                case 0:
                    return StatisticsRecordedFragment.newInstance(trackId);
                case 1:
-                    return IntervalsFragment.newInstance(trackId);
+                    return IntervalsFragment.newInstance();
                case 2:
                    return ChartFragment.newInstance(false);
                case 3:
@@ -16,13 +16,11 @@ import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
 import androidx.fragment.app.FragmentPagerAdapter;
-import androidx.viewpager.widget.ViewPager;
-
-import com.google.android.material.tabs.TabLayout;

 import de.dennisguse.opentracks.content.TrackDataHub;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.TrackRecordingBinding;
 import de.dennisguse.opentracks.fragments.ChartFragment;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.fragments.IntervalsFragment;
@@ -57,18 +55,16 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
    private SharedPreferences sharedPreferences;
    private TrackRecordingServiceConnection trackRecordingServiceConnection;
    private TrackDataHub trackDataHub;
-    private ViewPager pager;
    private TrackController trackController;

+    private TrackRecordingBinding viewBinding;
+
    // Initialized from Intent; if a new track recording is started, a new TrackId will be provided by TrackRecordingService
    private Track.Id trackId;

    // Preferences
    private boolean recordingTrackPaused;

-    // Intervals recording fragment needs Track.Id when the activity creates it.
-    private OnTrackIdListener intervalsListener;
-
    private final Runnable bindChangedCallback = new Runnable() {
        @Override
        public void run() {
@@ -85,9 +81,6 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                if (trackId == null) {
                    // trackId isn't initialized -> leads a new recording.
                    trackId = service.startNewTrack();
-                    if (intervalsListener != null) {
-                        intervalsListener.onTrackId(trackId);
-                    }
                } else {
                    // trackId is initialized -> resumes the track.
                    service.resumeTrack(trackId);
@@ -167,7 +160,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        contentProviderUtils = new ContentProviderUtils(this);
-
+        sharedPreferences = PreferencesUtils.getSharedPreferences(this);
        trackId = null;
        if (savedInstanceState != null) {
            //Activity was recreated.
@@ -182,20 +175,17 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
        }

        recordingTrackPaused = PreferencesUtils.isRecordingTrackPausedDefault(this);
-        sharedPreferences = PreferencesUtils.getSharedPreferences(this);

        trackRecordingServiceConnection = new TrackRecordingServiceConnection(bindChangedCallback);
        trackDataHub = new TrackDataHub(this);

-        pager = findViewById(R.id.track_detail_activity_view_pager);
-        pager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
-        TabLayout tabs = findViewById(R.id.track_detail_activity_tablayout);
-        tabs.setupWithViewPager(pager);
+        viewBinding.trackDetailActivityViewPager.setAdapter(new CustomFragmentPagerAdapter(getSupportFragmentManager(), FragmentPagerAdapter.BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT));
+        viewBinding.trackDetailActivityTablayout.setupWithViewPager(viewBinding.trackDetailActivityViewPager);
        if (savedInstanceState != null) {
-            pager.setCurrentItem(savedInstanceState.getInt(CURRENT_TAB_TAG_KEY));
+            viewBinding.trackDetailActivityViewPager.setCurrentItem(savedInstanceState.getInt(CURRENT_TAB_TAG_KEY));
        }

-        trackController = new TrackController(this, trackRecordingServiceConnection, false, recordListener, stopListener);
+        trackController = new TrackController(this, viewBinding.trackControllerContainer, trackRecordingServiceConnection, false, recordListener, stopListener);
    }

    @Override
@@ -273,7 +263,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
-        outState.putInt(CURRENT_TAB_TAG_KEY, pager.getCurrentItem());
+        outState.putInt(CURRENT_TAB_TAG_KEY, viewBinding.trackDetailActivityViewPager.getCurrentItem());
        outState.putParcelable(EXTRA_TRACK_ID, trackId);
    }

@@ -292,8 +282,9 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
    }

    @Override
-    protected int getLayoutResId() {
-        return R.layout.track_record;
+    protected View getRootView() {
+        viewBinding = TrackRecordingBinding.inflate(getLayoutInflater());
+        return viewBinding.getRoot();
    }

    @Override
@@ -390,7 +381,7 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
                case 0:
                    return StatisticsRecordingFragment.newInstance();
                case 1:
-                    return IntervalsFragment.IntervalsRecordingFragment.newInstance(trackId);
+                    return IntervalsFragment.IntervalsRecordingFragment.newInstance();
                case 2:
                    return ChartFragment.newInstance(false);
                case 3:
@@ -416,15 +407,4 @@ public class TrackRecordingActivity extends AbstractActivity implements ChooseAc
            }
        }
    }
-
-    public interface OnTrackIdListener {
-        void onTrackId(Track.Id trackId);
-    }
-
-    public void setTrackIdListener(OnTrackIdListener listener) {
-        this.intervalsListener = listener;
-        if (trackId != null) {
-            listener.onTrackId(trackId);
-        }
-    }
-}
+}
@@ -23,10 +23,12 @@ public class IntervalStatisticsAdapter extends ArrayAdapter<IntervalStatistics.I
    private StackMode stackMode;
    private boolean metricUnits;
    private float sumDistance_m;
+    private String category;

-    public IntervalStatisticsAdapter(Context context, List<IntervalStatistics.Interval> intervalList, StackMode stackMode) {
+    public IntervalStatisticsAdapter(Context context, List<IntervalStatistics.Interval> intervalList, String category, StackMode stackMode) {
        super(context, R.layout.interval_stats_list_item, intervalList);
        metricUnits = PreferencesUtils.isMetricUnits(context);
+        this.category = category;
        this.stackMode = stackMode;
    }

@@ -43,8 +45,8 @@ public class IntervalStatisticsAdapter extends ArrayAdapter<IntervalStatistics.I
            intervalView = LayoutInflater.from(getContext()).inflate(R.layout.interval_stats_list_item, parent, false);

            viewHolder.distance = intervalView.findViewById(R.id.interval_item_distance);
-            viewHolder.speed = intervalView.findViewById(R.id.interval_item_speed);
-            viewHolder.pace = intervalView.findViewById(R.id.interval_item_pace);
+            viewHolder.rate = intervalView.findViewById(R.id.interval_item_rate);
+            viewHolder.gain = intervalView.findViewById(R.id.interval_item_gain);

            intervalView.setTag(viewHolder);
        } else {
@@ -58,11 +60,16 @@ public class IntervalStatisticsAdapter extends ArrayAdapter<IntervalStatistics.I
        }
        viewHolder.distance.setText(StringUtils.formatDistance(getContext(), sumDistance_m, metricUnits));

-        Pair<String, String> speedParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, true);
-        viewHolder.speed.setText(speedParts.first + " " + speedParts.second);
+        if (PreferencesUtils.isReportSpeed(getContext(), category)) {
+            Pair<String, String> speedParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, true);
+            viewHolder.rate.setText(speedParts.first + " " + speedParts.second);
+        } else {
+            Pair<String, String> paceParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, false);
+            viewHolder.rate.setText(paceParts.first + " " + paceParts.second);
+        }

-        Pair<String, String> paceParts = StringUtils.getSpeedParts(getContext(), interval.getSpeed_ms(), metricUnits, false);
-        viewHolder.pace.setText(paceParts.first + " " + paceParts.second);
+        Pair<String, String> gainParts = StringUtils.formatElevation(getContext(), interval.getGain_m(), metricUnits);
+        viewHolder.gain.setText(gainParts.first + " " + gainParts.second);

        return intervalView;
    }
@@ -77,7 +84,7 @@ public class IntervalStatisticsAdapter extends ArrayAdapter<IntervalStatistics.I

    private static class ViewHolder {
        private TextView distance;
-        private TextView speed;
-        private TextView pace;
+        private TextView rate;
+        private TextView gain;
    }
 }
@@ -1,43 +0,0 @@
-package de.dennisguse.opentracks.android;
-
-import android.content.ContentResolver;
-import android.content.ContentValues;
-import android.database.Cursor;
-import android.net.Uri;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-/**
- * Wraps a {@link ContentResolver} and provides access as {@link IContentResolver}.
- */
-public class ContentResolverWrapper implements IContentResolver {
-
-    private final ContentResolver contentResolver;
-
-    public ContentResolverWrapper(ContentResolver contentResolver) {
-        this.contentResolver = contentResolver;
-    }
-
-    @Nullable
-    public Uri insert(@NonNull Uri url, @Nullable ContentValues values) {
-        return contentResolver.insert(url, values);
-    }
-
-    public int bulkInsert(@NonNull Uri url, @NonNull ContentValues[] values) {
-        return contentResolver.bulkInsert(url, values);
-    }
-
-    @Nullable
-    public Cursor query(@NonNull Uri uri, @Nullable String[] projection, @Nullable String selection, @Nullable String[] selectionArgs, @Nullable String sortOrder) {
-        return contentResolver.query(uri, projection, selection, selectionArgs, sortOrder);
-    }
-
-    public int update(@NonNull Uri uri, @Nullable ContentValues values, @Nullable String where, @Nullable String[] selectionArgs) {
-        return contentResolver.update(uri, values, where, selectionArgs);
-    }
-
-    public int delete(@NonNull Uri url, @Nullable String where, @Nullable String[] selectionArgs) {
-        return contentResolver.delete(url, where, selectionArgs);
-    }
-}
@@ -1,27 +0,0 @@
-package de.dennisguse.opentracks.android;
-
-import android.content.ContentValues;
-import android.database.Cursor;
-import android.net.Uri;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.annotation.RequiresPermission;
-
-/**
- * Defines the interface actually shared by {@link android.content.ContentProvider} and {@link android.content.ContentResolver}.
- * So, both can be used interchangeably.
- */
-public interface IContentResolver {
-    @Nullable
-    Uri insert(@RequiresPermission.Write @NonNull Uri url, @Nullable ContentValues values);
-
-    int bulkInsert(@RequiresPermission.Write @NonNull Uri url, @NonNull ContentValues[] values);
-
-    @Nullable
-    Cursor query(@RequiresPermission.Read @NonNull Uri uri, @Nullable String[] projection, @Nullable String selection, @Nullable String[] selectionArgs, @Nullable String sortOrder);
-
-    int update(@RequiresPermission.Write @NonNull Uri uri, @Nullable ContentValues values, @Nullable String where, @Nullable String[] selectionArgs);
-
-    int delete(@RequiresPermission.Write @NonNull Uri url, @Nullable String where, @Nullable String[] selectionArgs);
-}
@@ -54,17 +54,15 @@ import de.dennisguse.opentracks.util.PreferencesUtils;
 public class TrackDataHub implements SharedPreferences.OnSharedPreferenceChangeListener {

    /**
-     * Target number of track points displayed by the map overlay.
+     * Target number of track points displayed by the diagrams (recommended).
     * We may display more than this number of points.
     */
-    @Deprecated
    private static final int TARGET_DISPLAYED_TRACKPOINTS = 5000;

    /**
-     * Maximum number of markers to displayed.
+     * Maximum number of markers to displayed in the diagrams.
     */
    @VisibleForTesting
-    @Deprecated
    private static final int MAX_DISPLAYED_MARKERS = 128;

    private static final String TAG = TrackDataHub.class.getSimpleName();
@@ -40,20 +40,28 @@ public final class Marker {
    private String description = "";
    private String category = "";
    private String icon = "";
-    private Track.Id trackId;
+    private final Track.Id trackId;
+    //TODO It is the distance from the track starting point; rename to something more meaningful
    private double length = 0.0;
    private long duration = 0;
-    private Location location;
+    private final Location location;
    @Deprecated //TODO Make an URI instead of String
    private String photoUrl = "";

    @VisibleForTesting
-    public Marker(@NonNull TrackPoint trackPoint) {
-        this.location = trackPoint.getLocation();
+    public Marker(@NonNull Track.Id trackId, @NonNull TrackPoint trackPoint) {
+        this(trackId, trackPoint.getLocation());
    }

+    @Deprecated
+    //TODO Used by AbstractFileImporter to create an intermediate marker before saving a new one into the database.
    public Marker(@NonNull Location location) {
+        this(null, location);
+    }
+
+    public Marker(@NonNull Track.Id trackId, @NonNull Location location) {
        this.location = location;
+        this.trackId = trackId;
    }

    public Marker(String name, String description, String category, String icon, @NonNull Track.Id trackId, double length, long duration, @NonNull Location location, String photoUrl) {
@@ -112,14 +120,11 @@ public final class Marker {
        this.icon = icon;
    }

-    public Track.Id getTrackId() {
+    public @NonNull
+    Track.Id getTrackId() {
        return trackId;
    }

-    public void setTrackId(Track.Id trackId) {
-        this.trackId = trackId;
-    }
-
    public double getLength() {
        return length;
    }
@@ -28,7 +28,7 @@ import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
 */
 public interface MarkerColumns extends BaseColumns {

-    String TABLE_NAME = "waypoints";
+    String TABLE_NAME = "markers";
    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";
@@ -60,7 +60,7 @@ public interface MarkerColumns extends BaseColumns {
            + DESCRIPTION + " TEXT, "
            + CATEGORY + " TEXT, "
            + ICON + " TEXT, "
-            + TRACKID + " INTEGER, "
+            + TRACKID + " INTEGER NOT NULL, "
            + LENGTH + " FLOAT, "
            + DURATION + " INTEGER, "
            + LONGITUDE + " INTEGER, "
@@ -69,7 +69,8 @@ public interface MarkerColumns extends BaseColumns {
            + ALTITUDE + " FLOAT, "
            + ACCURACY + " FLOAT, "
            + BEARING + " FLOAT, "
-            + PHOTOURL + " TEXT"
+            + PHOTOURL + " TEXT, "
+            + "FOREIGN KEY (" + TRACKID + ") REFERENCES " + TracksColumns.TABLE_NAME + "(" + TracksColumns._ID + ") ON UPDATE CASCADE ON DELETE CASCADE"
            + ")";

    String CREATE_TABLE_INDEX = "CREATE INDEX " + TABLE_NAME + "_" + TRACKID + "_index ON " + TABLE_NAME + "(" + TRACKID + ")";
@@ -149,7 +149,7 @@ public class Track {
        @NonNull
        @Override
        public String toString() {
-            throw new RuntimeException("Not supported");
+            return String.valueOf(id);
        }

        @Override
@@ -40,7 +40,9 @@ public interface TrackPointsColumns extends BaseColumns {

    String LONGITUDE = "longitude";
    String LATITUDE = "latitude";
+    @Deprecated
    double PAUSE_LATITUDE = 100.0;
+    @Deprecated
    double RESUME_LATITUDE = 200.0;

    String TIME = "time";
@@ -55,7 +57,7 @@ public interface TrackPointsColumns extends BaseColumns {

    String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " ("
            + _ID + " INTEGER PRIMARY KEY AUTOINCREMENT, "
-            + TRACKID + " INTEGER, "
+            + TRACKID + " INTEGER NOT NULL, "
            + LONGITUDE + " INTEGER, "
            + LATITUDE + " INTEGER, "
            + TIME + " INTEGER, "
@@ -66,7 +68,9 @@ public interface TrackPointsColumns extends BaseColumns {
            + SENSOR_HEARTRATE + " FLOAT, "
            + SENSOR_CADENCE + " FLOAT, "
            + SENSOR_POWER + " FLOAT, "
-            + ELEVATION_GAIN + " FLOAT)";
+            + ELEVATION_GAIN + " FLOAT, "
+            + "FOREIGN KEY (" + TRACKID + ") REFERENCES " + TracksColumns.TABLE_NAME + "(" + TracksColumns._ID + ") ON UPDATE CASCADE ON DELETE CASCADE"
+            + ")";

    String CREATE_TABLE_INDEX = "CREATE INDEX " + TABLE_NAME + "_" + TRACKID + "_index ON " + TABLE_NAME + "(" + TRACKID + ")";
 }
@@ -35,12 +35,13 @@ public interface TracksColumns extends BaseColumns {
    String DEFAULT_SORT_ORDER = _ID;

    // Columns
-    String UUID = "uuid";
+    String UUID = "uuid"; // identifier to make tracks globally unique (prevent re-import)
    String NAME = "name"; // track name
    String DESCRIPTION = "description"; // track description
    String CATEGORY = "category"; // track activity type
    String STARTTIME = "starttime"; // track start time
    String STOPTIME = "stoptime"; // track stop time
+    String MARKER_COUNT = "markerCount"; // the numbers of markers (virtual column)
    @Deprecated
    String NUMPOINTS = "numpoints"; // number of track points //TODO UNUSED
    String TOTALDISTANCE = "totaldistance"; // total distance
@@ -55,25 +56,25 @@ public interface TracksColumns extends BaseColumns {
    String ELEVATIONGAIN = "elevationgain"; // elevation gain
    String ICON = "icon"; // track activity type icon

-    String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " (" // table
-            + _ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " // id
-            + NAME + " TEXT, " // name
-            + DESCRIPTION + " TEXT, " // description
-            + CATEGORY + " TEXT, " // category
-            + STARTTIME + " INTEGER, " // start time
-            + STOPTIME + " INTEGER, " // stop time
-            + NUMPOINTS + " INTEGER, " // num points
-            + TOTALDISTANCE + " FLOAT, " // total distance
-            + TOTALTIME + " INTEGER, " // total time
-            + MOVINGTIME + " INTEGER, " // moving time
-            + AVGSPEED + " FLOAT, " // average speed
-            + AVGMOVINGSPEED + " FLOAT, " // average moving speed
-            + MAXSPEED + " FLOAT, " // max speed
-            + MINELEVATION + " FLOAT, " // min elevation
-            + MAXELEVATION + " FLOAT, " // max elevation
-            + ELEVATIONGAIN + " FLOAT, " // elevation gain
-            + ICON + " TEXT, " // icon
-            + UUID + " BLOB)"; // UUID
+    String CREATE_TABLE = "CREATE TABLE " + TABLE_NAME + " ("
+            + _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, "
+            + ICON + " TEXT, "
+            + UUID + " BLOB)";

    String CREATE_TABLE_INDEX = "CREATE UNIQUE INDEX " + TABLE_NAME + "_" + UUID + "_index ON " + TABLE_NAME + "(" + UUID + ")";

@@ -33,13 +33,12 @@ import androidx.loader.content.Loader;

 import java.io.File;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.UUID;

 import de.dennisguse.opentracks.BuildConfig;
-import de.dennisguse.opentracks.android.ContentResolverWrapper;
-import de.dennisguse.opentracks.android.IContentResolver;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.Track;
@@ -48,12 +47,10 @@ import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 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.
- * Allows to use {@link ContentResolver} and {@link android.content.ContentProvider} interchangeably via {@link IContentResolver}.
 *
 * @author Leif Hendrik Wilden
 */
@@ -73,18 +70,15 @@ public class ContentProviderUtils {
    public static final int MAX_LOADED_MARKERS = 10000;
    private static final String ID_SEPARATOR = ",";

-    private final IContentResolver contentResolver;
+    private final ContentResolver contentResolver;
    private int defaultCursorBatchSize = 2000;

    public ContentProviderUtils(Context context) {
-        this(context.getContentResolver());
+        contentResolver = context.getContentResolver();
    }

+    @VisibleForTesting
    public ContentProviderUtils(ContentResolver contentResolver) {
-        this.contentResolver = new ContentResolverWrapper(contentResolver);
-    }
-
-    public ContentProviderUtils(IContentResolver contentResolver) {
        this.contentResolver = contentResolver;
    }

@@ -94,6 +88,7 @@ public class ContentProviderUtils {
     *
     * @param trackId the track id
     */
+    @Deprecated //TODO Figure out why we need this.
    public void clearTrack(Track.Id trackId) {
        deleteTrackPointsAndMarkers(trackId);
        Track track = new Track();
@@ -106,7 +101,7 @@ public class ContentProviderUtils {
     *
     * @param cursor the cursor pointing to the track
     */
-    public Track createTrack(Cursor cursor) {
+    public static Track createTrack(Cursor cursor) {
        int idIndex = cursor.getColumnIndexOrThrow(TracksColumns._ID);
        int uuidIndex = cursor.getColumnIndexOrThrow(TracksColumns.UUID);
        int nameIndex = cursor.getColumnIndexOrThrow(TracksColumns.NAME);
@@ -184,17 +179,18 @@ public class ContentProviderUtils {
        FileUtils.deleteDirectoryRecurse(dir);
    }

-    /**
-     * Deletes a track.
-     *
-     * @param trackId the track id
-     */
-    public void deleteTrack(Context context, Track.Id trackId) {
-        if (trackId == null) {
-            return;
+    public void deleteTracks(Context context, @NonNull List<Track.Id> trackIds) {
+        // Delete track folder resources.
+        for (Track.Id trackId : trackIds) {
+            FileUtils.deleteDirectoryRecurse(FileUtils.getPhotoDir(context, trackId));
        }
-        deleteTrackPointsAndMarkers(trackId);

+        // Delete track last since it triggers a database vacuum call
+        String whereClause = String.format(TracksColumns._ID + " IN (%s)", TextUtils.join(",", Collections.nCopies(trackIds.size(), "?")));
+        contentResolver.delete(TracksColumns.CONTENT_URI, whereClause, trackIds.stream().map(id->Long.toString(id.getId())).toArray(String[]::new));
+    }
+
+    public void deleteTrack(Context context, @NonNull Track.Id trackId) {
        // Delete track folder resources.
        FileUtils.deleteDirectoryRecurse(FileUtils.getPhotoDir(context, trackId));

@@ -223,14 +219,6 @@ 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
@@ -368,7 +356,8 @@ public class ContentProviderUtils {
            location.setBearing(cursor.getFloat(bearingIndex));
        }

-        Marker marker = new Marker(location);
+        Track.Id trackId = new Track.Id(cursor.getLong(trackIdIndex));
+        Marker marker = new Marker(trackId, location);

        if (!cursor.isNull(idIndex)) {
            marker.setId(new Marker.Id(cursor.getLong(idIndex)));
@@ -385,9 +374,6 @@ public class ContentProviderUtils {
        if (!cursor.isNull(iconIndex)) {
            marker.setIcon(cursor.getString(iconIndex));
        }
-        if (!cursor.isNull(trackIdIndex)) {
-            marker.setTrackId(new Track.Id(cursor.getLong(trackIdIndex)));
-        }
        if (!cursor.isNull(lengthIndex)) {
            marker.setLength(cursor.getFloat(lengthIndex));
        }
@@ -503,7 +489,7 @@ public class ContentProviderUtils {
        }
    }

-    @Deprecated //TODO Expose information via Cursor
+    @Deprecated //TODO TracksColumns.MARKER_COUNT while querying for tracks
    public int getMarkerCount(Track.Id trackId) {
        if (!trackId.isValid()) {
            return 0;
@@ -566,9 +552,7 @@ public class ContentProviderUtils {
        values.put(MarkerColumns.DESCRIPTION, marker.getDescription());
        values.put(MarkerColumns.CATEGORY, marker.getCategory());
        values.put(MarkerColumns.ICON, marker.getIcon());
-        if (marker.getTrackId() != null) {
-            values.put(MarkerColumns.TRACKID, marker.getTrackId().getId());
-        }
+        values.put(MarkerColumns.TRACKID, marker.getTrackId().getId());
        values.put(MarkerColumns.LENGTH, marker.getLength());
        values.put(MarkerColumns.DURATION, marker.getDuration());

@@ -33,12 +33,16 @@ import android.util.Log;
 import androidx.annotation.NonNull;
 import androidx.annotation.VisibleForTesting;

+import java.util.Arrays;
+
 import de.dennisguse.opentracks.content.data.MarkerColumns;
 import de.dennisguse.opentracks.content.data.TrackPointsColumns;
 import de.dennisguse.opentracks.content.data.TracksColumns;

 /**
 * A {@link ContentProvider} that handles access to track points, tracks, and markers tables.
+ * <p>
+ * Data consistency is enforced using Foreign Key Constraints within the database incl. cascading deletes.
 *
 * @author Leif Hendrik Wilden
 */
@@ -82,6 +86,8 @@ public class CustomContentProvider extends ContentProvider {
        CustomSQLiteOpenHelper databaseHelper = new CustomSQLiteOpenHelper(context);
        try {
            db = databaseHelper.getWritableDatabase();
+            // Necessary to enable cascade deletion from Track to TrackPoints and Markers
+            db.setForeignKeyConstraintsEnabled(true);
        } catch (SQLiteException e) {
            Log.e(TAG, "Unable to open database for writing.", e);
        }
@@ -206,7 +212,11 @@ public class CustomContentProvider extends ContentProvider {
                queryBuilder.appendWhere(TrackPointsColumns.TRACKID + " IN (" + TextUtils.join(SQL_LIST_DELIMITER, ContentProviderUtils.parseTrackIdsFromUri(url)) + ")");
                break;
            case TRACKS:
-                queryBuilder.setTables(TracksColumns.TABLE_NAME);
+                if (projection != null && Arrays.asList(projection).contains(TracksColumns.MARKER_COUNT)) {
+                    queryBuilder.setTables(TracksColumns.TABLE_NAME + " LEFT OUTER JOIN (SELECT " + MarkerColumns.TRACKID + " AS markerTrackId, COUNT(*) AS " + TracksColumns.MARKER_COUNT + " FROM " + MarkerColumns.TABLE_NAME + " GROUP BY " + MarkerColumns.TRACKID + ") ON (" + TracksColumns.TABLE_NAME + "." + TracksColumns._ID + "= markerTrackId)");
+                } else {
+                    queryBuilder.setTables(TracksColumns.TABLE_NAME);
+                }
                sortOrder = sort != null ? sort : TracksColumns.DEFAULT_SORT_ORDER;
                break;
            case TRACKS_BY_ID:
@@ -287,11 +297,6 @@ public class CustomContentProvider extends ContentProvider {
        return count;
    }

-    /**
-     * Gets the {@link UrlType} for a url.
-     *
-     * @param url the url
-     */
    @NonNull
    private UrlType getUrlType(Uri url) {
        UrlType[] urlTypes = UrlType.values();
@@ -323,12 +328,6 @@ public class CustomContentProvider extends ContentProvider {
        }
    }

-    /**
-     * Inserts a track point.
-     *
-     * @param url    the content url
-     * @param values the content values
-     */
    private Uri insertTrackPoint(Uri url, ContentValues values) {
        boolean hasLatitude = values.containsKey(TrackPointsColumns.LATITUDE);
        boolean hasLongitude = values.containsKey(TrackPointsColumns.LONGITUDE);
@@ -343,12 +342,6 @@ public class CustomContentProvider extends ContentProvider {
        throw new SQLiteException("Failed to insert a track point " + url);
    }

-    /**
-     * Inserts a track.
-     *
-     * @param url           the content url
-     * @param contentValues the content values
-     */
    private Uri insertTrack(Uri url, ContentValues contentValues) {
        boolean hasStartTime = contentValues.containsKey(TracksColumns.STARTTIME);
        if (!hasStartTime) {
@@ -25,7 +25,7 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {

    private static final String TAG = CustomSQLiteOpenHelper.class.getSimpleName();

-    private static final int DATABASE_VERSION = 27;
+    private static final int DATABASE_VERSION = 28;

    @VisibleForTesting
    public static final String DATABASE_NAME = "database.db";
@@ -73,7 +73,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                case 27:
                    upgradeFrom26to27(db);
                    break;
-
+                case 28:
+                    upgradeFrom27to28(db);
+                    break;

                default:
                    throw new RuntimeException("Not implemented: upgrade to " + toVersion);
@@ -98,6 +100,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
                case 26:
                    downgradeFrom27to26(db);
                    break;
+                case 27:
+                    downgradeFrom28to27(db);
+                    break;

                default:
                    throw new RuntimeException("Not implemented: downgrade to " + toVersion);
@@ -142,6 +147,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
        db.endTransaction();
    }

+    /**
+     * Add indeces for foreign key trackId
+     */
    private void upgradeFrom24to25(SQLiteDatabase db) {
        db.beginTransaction();

@@ -162,6 +170,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
        db.endTransaction();
    }

+    /**
+     * Add track UUID to prevent re-import of existing tracks
+     */
    private void upgradeFrom25to26(SQLiteDatabase db) {
        db.beginTransaction();

@@ -198,6 +209,9 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
        db.endTransaction();
    }

+    /**
+     * Add elevation gain
+     */
    private void upgradeFrom26to27(SQLiteDatabase db) {
        db.beginTransaction();

@@ -220,4 +234,54 @@ public class CustomSQLiteOpenHelper extends SQLiteOpenHelper {
        db.setTransactionSuccessful();
        db.endTransaction();
    }
+
+    /**
+     * Add foreign key constraints on trackId
+     */
+    private void upgradeFrom27to28(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        // TrackPoints
+        db.execSQL("ALTER TABLE trackpoints RENAME TO trackpoints_old");
+        db.execSQL("CREATE TABLE trackpoints (_id INTEGER PRIMARY KEY AUTOINCREMENT, trackid INTEGER NOT NULL, longitude INTEGER, latitude INTEGER, time INTEGER, elevation FLOAT, accuracy FLOAT, speed FLOAT, bearing FLOAT, sensor_heartrate FLOAT, sensor_cadence FLOAT, sensor_power FLOAT, elevation_gain FLOAT, FOREIGN KEY (trackid) REFERENCES tracks(_id) ON UPDATE CASCADE ON DELETE CASCADE)");
+        db.execSQL("INSERT INTO trackpoints SELECT _id, trackid, longitude, latitude, time, elevation, accuracy, speed, bearing, sensor_heartrate, sensor_cadence, sensor_power, elevation_gain FROM trackpoints_old");
+        db.execSQL("DROP TABLE trackpoints_old");
+
+        db.execSQL("CREATE INDEX trackpoints_trackid_index ON trackpoints(trackid)");
+
+        // Markers
+        db.execSQL("ALTER TABLE waypoints RENAME TO markers_old");
+        db.execSQL("CREATE TABLE markers (_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, description TEXT, category TEXT, icon TEXT, trackid INTEGER NOT NULL, length FLOAT, duration INTEGER, longitude INTEGER, latitude INTEGER, time INTEGER, elevation FLOAT, accuracy FLOAT, bearing FLOAT, photoUrl TEXT, FOREIGN KEY (trackid) REFERENCES tracks(_id) ON UPDATE CASCADE ON DELETE CASCADE)");
+
+        db.execSQL("INSERT INTO markers SELECT _id, name, description, category, icon, trackid, length, duration, longitude, latitude, time, elevation, accuracy, bearing, photoUrl FROM markers_old");
+        db.execSQL("DROP TABLE markers_old");
+
+        db.execSQL("CREATE INDEX markers_trackid_index ON markers(trackid)");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
+
+    private void downgradeFrom28to27(SQLiteDatabase db) {
+        db.beginTransaction();
+
+        // TrackPoints
+        db.execSQL("ALTER TABLE trackpoints RENAME TO trackpoints_old");
+        db.execSQL("CREATE TABLE trackpoints (_id INTEGER PRIMARY KEY AUTOINCREMENT, trackid INTEGER NOT NULL, longitude INTEGER, latitude INTEGER, time INTEGER, elevation FLOAT, accuracy FLOAT, speed FLOAT, bearing FLOAT, sensor_heartrate FLOAT, sensor_cadence FLOAT, sensor_power FLOAT, elevation_gain FLOAT)");
+        db.execSQL("INSERT INTO trackpoints SELECT _id, trackid, longitude, latitude, time, elevation, accuracy, speed, bearing, sensor_heartrate, sensor_cadence, sensor_power, elevation_gain FROM trackpoints_old");
+        db.execSQL("DROP TABLE trackpoints_old");
+
+        db.execSQL("CREATE INDEX trackpoints_trackid_index ON trackpoints(trackid)");
+
+        // Markers
+        db.execSQL("CREATE TABLE waypoints (_id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT, description TEXT, category TEXT, icon TEXT, trackid INTEGER, length FLOAT, duration INTEGER, longitude INTEGER, latitude INTEGER, time INTEGER, elevation FLOAT, accuracy FLOAT, bearing FLOAT, photoUrl TEXT)");
+
+        db.execSQL("INSERT INTO waypoints SELECT _id, name, description, category, icon, trackid, length, duration, longitude, latitude, time, elevation, accuracy, bearing, photoUrl FROM markers");
+        db.execSQL("DROP TABLE markers");
+
+        db.execSQL("CREATE INDEX waypoints_trackid_index ON waypoints(trackid)");
+
+        db.setTransactionSuccessful();
+        db.endTransaction();
+    }
 }
@@ -8,6 +8,7 @@ import android.database.MatrixCursor;
 import android.net.Uri;
 import android.os.ParcelFileDescriptor;
 import android.provider.OpenableColumns;
+import android.text.TextUtils;
 import android.util.Log;
 import android.util.Pair;

@@ -19,11 +20,11 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collections;
 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;
 import de.dennisguse.opentracks.content.data.TracksColumns;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
@@ -41,7 +42,7 @@ import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 * While handling a request {@link ShareContentProvider} could `grantPermissions()` to the calling app for {@link CustomContentProvider}'s URI.
 * However, while handling the request this would allow the calling app to actually contact {@link CustomContentProvider} directly and get access to stored data that should remain private.
 */
-public class ShareContentProvider extends CustomContentProvider implements IContentResolver {
+public class ShareContentProvider extends CustomContentProvider {

    private static final String[] COLUMNS = {OpenableColumns.DISPLAY_NAME, OpenableColumns.SIZE};

@@ -209,12 +210,15 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
    @Nullable
    @Override
    public ParcelFileDescriptor openFile(@NonNull Uri uri, @NonNull String mode) throws FileNotFoundException {
-        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
-
        Set<Track.Id> trackIds = parseURI(uri);
        final ArrayList<Track> tracks = new ArrayList<>();
-        for (Track.Id trackId : trackIds) {
-            tracks.add(contentProviderUtils.getTrack(trackId));
+        String[] trackIdsString = trackIds.stream().map(Track.Id::toString).toArray(String[]::new);
+        String whereClause = String.format(TracksColumns._ID + " IN (%s)", TextUtils.join(",", Collections.nCopies(trackIds.size(), "?")));
+
+        try (Cursor cursor = super.query(TracksColumns.CONTENT_URI, null, whereClause, trackIdsString, TracksColumns._ID)) {
+            while (cursor.moveToNext()) {
+                tracks.add(ContentProviderUtils.createTrack(cursor));
+            }
        }

        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext());
@@ -1,5 +1,7 @@
 package de.dennisguse.opentracks.content.sensor;

+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.annotation.VisibleForTesting;

 import de.dennisguse.opentracks.services.sensors.BluetoothRemoteSensorManager;
@@ -11,6 +13,10 @@ public class SensorData {

    private final long timestamp_ms;

+    SensorData(String sensorAddress) {
+        this(sensorAddress, null, System.currentTimeMillis());
+    }
+
    SensorData(String sensorAddress, String sensorName) {
        this(sensorAddress, sensorName, System.currentTimeMillis());
    }
@@ -22,14 +28,20 @@ public class SensorData {
        this.timestamp_ms = timestamp_ms;
    }

+    @NonNull
    public String getSensorAddress() {
        return sensorAddress;
    }

+    @Nullable
    public String getSensorName() {
        return sensorName;
    }

+    public String getSensorNameOrAddress() {
+        return sensorName != null ? sensorName : sensorAddress;
+    }
+
    /**
     * Is the data recent considering the current time.
     */
@@ -17,17 +17,20 @@ public final class SensorDataCycling {

    private static final String TAG = SensorDataCycling.class.getSimpleName();

-    private static final int INVALID_VALUE_INT = -1;
-    private static final float INVALID_VALUE_FLOAT = Float.NaN;
-
    private SensorDataCycling() {
    }

    public static class Cadence extends SensorData {

-        private final long crankRevolutionsCount; // UINT32
-        private final int crankRevolutionsTime; // UINT16; 1/1024s
-        private float cadence_rpm = INVALID_VALUE_FLOAT;
+        private final Long crankRevolutionsCount; // UINT32
+        private final Integer crankRevolutionsTime; // UINT16; 1/1024s
+        private Float cadence_rpm;
+
+        public Cadence(String sensorAddress) {
+            super(sensorAddress);
+            this.crankRevolutionsCount = null;
+            this.crankRevolutionsTime = null;
+        }

        public Cadence(String sensorAddress, String sensorName, long crankRevolutionsCount, int crankRevolutionsTime) {
            super(sensorAddress, sensorName);
@@ -43,7 +46,7 @@ public final class SensorDataCycling {
        }

        public boolean hasData() {
-            return crankRevolutionsCount != INVALID_VALUE_INT && crankRevolutionsTime != INVALID_VALUE_INT;
+            return crankRevolutionsCount != null && crankRevolutionsTime != null;
        }

        public long getCrankRevolutionsCount() {
@@ -55,7 +58,7 @@ public final class SensorDataCycling {
        }

        public boolean hasCadence_rpm() {
-            return !Float.isNaN(cadence_rpm);
+            return cadence_rpm != null;
        }

        public float getCadence_rpm() {
@@ -67,7 +70,7 @@ public final class SensorDataCycling {
                float timeDiff_ms = UintUtils.diff(crankRevolutionsTime, previous.crankRevolutionsTime, UintUtils.UINT16_MAX) / 1024f * UnitConversions.S_TO_MS;
                if (timeDiff_ms <= 0) {
                    Log.e(TAG, "Timestamps difference is invalid: cannot compute cadence.");
-                    cadence_rpm = INVALID_VALUE_FLOAT;
+                    cadence_rpm = null;
                } else {
                    long crankDiff = UintUtils.diff(crankRevolutionsCount, previous.crankRevolutionsCount, UintUtils.UINT32_MAX);
                    float cadence_ms = crankDiff / timeDiff_ms;
@@ -93,9 +96,15 @@ public final class SensorDataCycling {

    public static class Speed extends SensorData {

-        private final int wheelRevolutionsCount; // UINT16
-        private final int wheelRevolutionsTime; // UINT16; 1/1024s
-        private float speed_mps = INVALID_VALUE_FLOAT;
+        private final Integer wheelRevolutionsCount; // UINT16
+        private final Integer wheelRevolutionsTime; // UINT16; 1/1024s
+        private Float speed_mps;
+
+        public Speed(String sensorAddress) {
+            super(sensorAddress);
+            this.wheelRevolutionsCount = null;
+            this.wheelRevolutionsTime = null;
+        }

        public Speed(String sensorAddress, String sensorName, int wheelRevolutionsCount, int wheelRevolutionsTime) {
            super(sensorAddress, sensorName);
@@ -104,7 +113,7 @@ public final class SensorDataCycling {
        }

        public boolean hasData() {
-            return wheelRevolutionsCount != INVALID_VALUE_INT && wheelRevolutionsTime != INVALID_VALUE_INT;
+            return wheelRevolutionsCount != null && wheelRevolutionsTime != null;
        }

        public int getWheelRevolutionsCount() {
@@ -116,7 +125,7 @@ public final class SensorDataCycling {
        }

        public boolean hasSpeed_mps() {
-            return !Float.isNaN(speed_mps);
+            return speed_mps != null;
        }

        public float getSpeed_mps() {
@@ -128,7 +137,7 @@ public final class SensorDataCycling {
                float timeDiff_ms = UintUtils.diff(wheelRevolutionsTime, previous.wheelRevolutionsTime, UintUtils.UINT16_MAX) / 1024f * UnitConversions.S_TO_MS;
                if (timeDiff_ms <= 0) {
                    Log.e(TAG, "Timestamps difference is invalid: cannot compute cadence.");
-                    speed_mps = INVALID_VALUE_FLOAT;
+                    speed_mps = null;
                } else {
                    long wheelDiff = UintUtils.diff(wheelRevolutionsCount, previous.wheelRevolutionsCount, UintUtils.UINT16_MAX);
                    double timeDiff_s = timeDiff_ms * UnitConversions.MS_TO_S;
@@ -4,7 +4,12 @@ import androidx.annotation.NonNull;

 public class SensorDataHeartRate extends SensorData {

-    private final float heartRate_bpm;
+    private final Float heartRate_bpm;
+
+    public SensorDataHeartRate(String address) {
+        super(address);
+        heartRate_bpm = null;
+    }

    public SensorDataHeartRate(String name, String address, float heartRate_bpm) {
        super(name, address);
@@ -12,10 +17,10 @@ public class SensorDataHeartRate extends SensorData {
    }

    public boolean hasHeartRate_bpm() {
-        return !Float.isNaN(heartRate_bpm);
+        return heartRate_bpm != null;
    }

-    public float getHeartRate_bpm() {
+    public Float getHeartRate_bpm() {
        return heartRate_bpm;
    }

@@ -28,21 +28,11 @@ public final class SensorDataSet {
    }

    public void set(SensorData data) {
-        if (data instanceof SensorDataHeartRate) {
-            this.heartRate = (SensorDataHeartRate) data;
-            return;
-        }
+        set(data, data);
+    }

-        if (data instanceof SensorDataCycling.Cadence) {
-            this.cyclingCadence = (SensorDataCycling.Cadence) data;
-            return;
-        }
-        if (data instanceof SensorDataCycling.Speed) {
-            this.cyclingSpeed = (SensorDataCycling.Speed) data;
-            return;
-        }
-
-        throw new UnsupportedOperationException();
+    public void remove(SensorData type) {
+        set(type, null);
    }

    public void clear() {
@@ -72,4 +62,22 @@ public final class SensorDataSet {
                + (getCyclingCadence() != null ? " " + getCyclingCadence() : "")
                + (getCyclingSpeed() != null ? " " + getCyclingSpeed() : "");
    }
+
+    private void set(SensorData type, SensorData data) {
+        if (type instanceof SensorDataHeartRate) {
+            this.heartRate = (SensorDataHeartRate) data;
+            return;
+        }
+
+        if (type instanceof SensorDataCycling.Cadence) {
+            this.cyclingCadence = (SensorDataCycling.Cadence) data;
+            return;
+        }
+        if (type instanceof SensorDataCycling.Speed) {
+            this.cyclingSpeed = (SensorDataCycling.Speed) data;
+            return;
+        }
+
+        throw new UnsupportedOperationException();
+    }
 }
@@ -40,6 +40,7 @@ import de.dennisguse.opentracks.content.TrackDataListener;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.databinding.ChartBinding;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
 import de.dennisguse.opentracks.util.LocationUtils;
@@ -73,6 +74,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    private TrackStatisticsUpdater trackStatisticsUpdater;
    private long startTime;

+    private ChartBinding viewBinding;
+
    //TODO Why is this needed?
    private int recordingDistanceInterval;
    private String category = "";
@@ -147,15 +150,16 @@ public class ChartFragment extends Fragment implements TrackDataListener {

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.chart, container, false);
+        viewBinding = ChartBinding.inflate(inflater, container, false);
+        return viewBinding.getRoot();
    }

    @Override
    public void onStart() {
        super.onStart();
-        ViewGroup layout = getView().findViewById(R.id.chart_view_layout);
+
        LayoutParams layoutParams = new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
-        layout.addView(chartView, layoutParams);
+        viewBinding.chartViewLayout.addView(chartView, layoutParams);
    }

    @Override
@@ -179,8 +183,14 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    @Override
    public void onStop() {
        super.onStop();
-        ViewGroup layout = getView().findViewById(R.id.chart_view_layout);
-        layout.removeView(chartView);
+
+        viewBinding.chartViewLayout.removeView(chartView);
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        viewBinding = null;
    }

    @Override
@@ -7,7 +7,6 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
-import android.widget.GridView;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
@@ -17,6 +16,7 @@ import java.util.ArrayList;
 import java.util.List;

 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.databinding.ChooseActivityTypeBinding;
 import de.dennisguse.opentracks.util.TrackIconUtils;

 /**
@@ -39,6 +39,8 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment implements
        return TrackIconUtils.getAllIconValues().indexOf(iconValue);
    }

+    private ChooseActivityTypeBinding viewBinding;
+
    private final String preselectedCategory;

    private ChooseActivityTypeCaller chooseActivityTypeCaller;
@@ -57,8 +59,7 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment implements

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.choose_activity_type, container);
-        GridView gridView = view.findViewById(R.id.choose_activity_type_grid_view);
+        viewBinding = ChooseActivityTypeBinding.inflate(inflater, container, false);

        List<Integer> imageIds = new ArrayList<>();
        for (String iconValue : TrackIconUtils.getAllIconValues()) {
@@ -66,15 +67,14 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment implements
        }

        final ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(imageIds);
-        gridView.setAdapter(imageAdapter);
-
        int position = getPosition(getContext(), preselectedCategory);
        if (position != -1) {
            imageAdapter.setSelected(position);
        }

-        gridView.setOnItemClickListener(this);
-        return view;
+        viewBinding.chooseActivityTypeGridView.setAdapter(imageAdapter);
+        viewBinding.chooseActivityTypeGridView.setOnItemClickListener(this);
+        return viewBinding.getRoot();
    }

    public void onAttach(@NonNull Context context) {
@@ -86,6 +86,11 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment implements
        }
    }

+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        viewBinding = null;
+    }

    @Override
    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
@@ -1,105 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.fragments;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.os.Bundle;
-
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AlertDialog;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentManager;
-
-import de.dennisguse.opentracks.R;
-
-public class ExportFinishedDialogFragment extends DialogFragment {
-
-    private static final String TAG = ExportFinishedDialogFragment.class.getSimpleName();
-
-    private static final String EXTRA_DIRECTORY_NAME_KEY = "directory_name";
-    private static final String EXTRA_EXPORTED_TRACK_COUNT = "exported_track_count";
-    private static final String EXTRA_TOTAL_TRACK_COUNT = "";
-
-    private static final String FINISHED_DIALOG_TAG = "finished_dialog_tag";
-
-    private DismissCallback caller;
-
-    public static void showDialog(FragmentManager fragmentManager, String directoryDisplayName, int successCount, int fileCount) {
-        Bundle bundle = new Bundle();
-        bundle.putString(EXTRA_DIRECTORY_NAME_KEY, directoryDisplayName);
-        bundle.putInt(EXTRA_EXPORTED_TRACK_COUNT, successCount);
-        bundle.putInt(EXTRA_TOTAL_TRACK_COUNT, fileCount);
-
-        ExportFinishedDialogFragment dialogFragment = new ExportFinishedDialogFragment();
-        dialogFragment.setArguments(bundle);
-        dialogFragment.show(fragmentManager, FINISHED_DIALOG_TAG);
-    }
-
-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (DismissCallback) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + DismissCallback.class.getSimpleName());
-        }
-    }
-
-    @Override
-    @NonNull
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        String directoryDisplayName = getArguments().getString(EXTRA_DIRECTORY_NAME_KEY);
-        int exportedTracksCount = getArguments().getInt(EXTRA_EXPORTED_TRACK_COUNT);
-        int totalTracksCount = getArguments().getInt(EXTRA_TOTAL_TRACK_COUNT);
-
-        int iconId;
-        int titleId;
-        String message;
-        String totalTracks = getResources().getQuantityString(R.plurals.tracks, totalTracksCount, totalTracksCount);
-        if (exportedTracksCount == totalTracksCount) {
-            iconId = R.drawable.ic_dialog_success_24dp;
-            titleId = R.string.generic_success_title;
-            message = getString(
-                    R.string.export_success, totalTracks, directoryDisplayName);
-        } else {
-            iconId = R.drawable.ic_dialog_error_24dp;
-            titleId = R.string.generic_error_title;
-            message = getString(R.string.export_error, exportedTracksCount, totalTracks, directoryDisplayName);
-        }
-        Dialog alertDialog = new AlertDialog.Builder(getContext()).setCancelable(true)
-                .setIcon(iconId).setMessage(message)
-                .setPositiveButton(R.string.generic_ok, (dialog, arg1) -> {
-                    dialog.dismiss();
-                    caller.onDismissed();
-                }).setTitle(titleId)
-                .create();
-
-        alertDialog.setCanceledOnTouchOutside(false);
-        return alertDialog;
-    }
-
-    @Override
-    public void onDetach() {
-        super.onDetach();
-        caller = null;
-    }
-
-    public interface DismissCallback {
-        void onDismissed();
-    }
-}
@@ -1,245 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.fragments;
-
-import android.app.Dialog;
-import android.app.ProgressDialog;
-import android.content.Context;
-import android.database.Cursor;
-import android.net.Uri;
-import android.os.Bundle;
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.documentfile.provider.DocumentFile;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentManager;
-
-import java.io.FileNotFoundException;
-import java.io.IOException;
-import java.io.OutputStream;
-
-import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.content.data.Track;
-import de.dennisguse.opentracks.content.data.TracksColumns;
-import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
-import de.dennisguse.opentracks.io.file.ExportFile;
-import de.dennisguse.opentracks.io.file.TrackFileFormat;
-import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
-import de.dennisguse.opentracks.util.DialogUtils;
-import de.dennisguse.opentracks.util.FileUtils;
-
-public class ExportProgressDialogFragment extends DialogFragment {
-
-    private static final String EXTRA_DIRECTORY_URI_KEY = "directory_uri";
-    private static final String EXTRA_TRACKFILEFORMAT_KEY = "trackfileformat";
-
-    private static final String TAG = ExportProgressDialogFragment.class.getSimpleName();
-
-    public static final String EXPORT_DIALOG_TAG = "export_dialog_tag";
-
-    private DismissCallback caller;
-
-    private ExportThread exportThread;
-
-    private String directoryDisplayName;
-
-    private int trackExportSuccessCount;
-    private int trackCount;
-
-    /**
-     * Create a new instance.
-     */
-    public static void showDialog(FragmentManager fragmentManager, TrackFileFormat trackFileFormat, Uri documentFileUri) {
-        Bundle bundle = new Bundle();
-        bundle.putParcelable(EXTRA_DIRECTORY_URI_KEY, documentFileUri);
-        bundle.putSerializable(EXTRA_TRACKFILEFORMAT_KEY, trackFileFormat);
-
-        ExportProgressDialogFragment dialogFragment = new ExportProgressDialogFragment();
-        dialogFragment.setArguments(bundle);
-        dialogFragment.setRetainInstance(true);
-        dialogFragment.show(fragmentManager, EXPORT_DIALOG_TAG);
-    }
-
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        // This fragment uses a background thread, so it should not be recreated during activity re-creation.
-        setRetainInstance(true);
-
-        Uri directoryUri = getArguments().getParcelable(EXTRA_DIRECTORY_URI_KEY);
-        TrackFileFormat trackFileFormat = (TrackFileFormat) getArguments().getSerializable(EXTRA_TRACKFILEFORMAT_KEY);
-        DocumentFile documentFile = DocumentFile.fromTreeUri(getContext(), directoryUri);
-
-        directoryDisplayName = FileUtils.getPath(documentFile);
-
-        exportThread = new ExportThread(trackFileFormat, documentFile);
-    }
-
-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (DismissCallback) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + DismissCallback.class.getSimpleName());
-        }
-    }
-
-    @Override
-    @NonNull
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        ProgressDialog progressDialog = DialogUtils.createHorizontalProgressDialog(getContext(),
-                R.string.export_progress_message,
-                dialog -> {
-                    exportThread.interrupt();
-                    dialog.dismiss();
-                    caller.onExportCanceled(directoryDisplayName, trackExportSuccessCount, trackCount);
-                }, directoryDisplayName);
-
-        progressDialog.setIndeterminate(false);
-        progressDialog.setMax(trackCount);
-        progressDialog.setProgress(Math.min(trackExportSuccessCount, trackCount));
-
-        return progressDialog;
-    }
-
-    @Override
-    public void onStart() {
-        super.onStart();
-        setProgress();
-        if (!exportThread.isAlive()) {
-            exportThread.start();
-        }
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-        if (!exportThread.isAlive()) {
-            exportThread.interrupt();
-        }
-    }
-
-    @Override
-    public void onDetach() {
-        super.onDetach();
-        caller = null;
-    }
-
-    private void onProgress(int trackImportSuccessCount, int fileCount) {
-        this.trackExportSuccessCount = trackImportSuccessCount;
-        this.trackCount = fileCount;
-        setProgress();
-    }
-
-    private void setProgress() {
-        ProgressDialog dialog = (ProgressDialog) getDialog();
-        if (dialog != null) {
-            dialog.setIndeterminate(false);
-            dialog.setMax(trackCount);
-            dialog.setProgress(Math.min(trackExportSuccessCount, trackCount));
-        }
-    }
-
-    private void onExportCompleted(int successCount, int fileCount) {
-        if (caller != null && !isDetached()) {
-            caller.onExportFinished(directoryDisplayName, successCount, fileCount);
-        }
-        dismissAllowingStateLoss();
-    }
-
-    private class ExportThread extends Thread {
-
-        private final TrackFileFormat trackFileFormat;
-
-        private final DocumentFile directory;
-
-        ExportThread(TrackFileFormat trackFileFormat, DocumentFile directory) {
-            this.directory = directory;
-            this.trackFileFormat = trackFileFormat;
-        }
-
-        @Override
-        public void run() {
-            Context context = ExportProgressDialogFragment.this.getContext();
-
-            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
-
-            try (Cursor cursor = contentProviderUtils.getTrackCursor(null, null, TracksColumns._ID)) {
-                if (cursor == null) {
-                    onExportCompleted(0, 0);
-                    return;
-                }
-
-                trackCount = cursor.getCount();
-                for (int i = 0; i < trackCount; i++) {
-                    onProgress(i, trackCount);
-                    if (Thread.interrupted()) {
-                        return;
-                    }
-
-                    cursor.moveToPosition(i);
-                    Track track = contentProviderUtils.createTrack(cursor);
-                    if (track != null && exportTrack(context, track)) {
-                        trackExportSuccessCount++;
-                    }
-                }
-
-                onExportCompleted(trackExportSuccessCount, trackCount);
-            }
-        }
-
-        private Boolean exportTrack(Context context, Track track) {
-            TrackExporter trackExporter = trackFileFormat.newTrackExporter(context);
-
-            DocumentFile exportDocumentFile = ExportFile.getExportDocumentFile(
-                    track.getId(),
-                    trackFileFormat.getExtension(),
-                    directory,
-                    trackFileFormat.getMimeType()
-            );
-
-            try (OutputStream outputStream = context.getContentResolver().openOutputStream(exportDocumentFile.getUri())) {
-                if (trackExporter.writeTrack(track, outputStream)) {
-                    return true;
-                } else {
-                    if (!exportDocumentFile.delete()) {
-                        Log.e(TAG, "Unable to delete exportDocumentFile");
-                    }
-                    Log.e(TAG, "Unable to export track");
-                    return false;
-                }
-            } catch (FileNotFoundException e) {
-                Log.e(TAG, "Unable to open exportDocumentFile " + exportDocumentFile.getName(), e);
-                return false;
-            } catch (IOException e) {
-                Log.e(TAG, "Unable to close exportDocumentFile output stream", e);
-                return false;
-            }
-        }
-
-    }
-
-    public interface DismissCallback {
-        void onExportCanceled(String directoryDisplayName, int successCount, int fileCount);
-
-        void onExportFinished(String directoryDisplayName, int successCount, int fileCount);
-    }
-}
@@ -1,111 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.fragments;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.os.Bundle;
-
-import androidx.annotation.NonNull;
-import androidx.appcompat.app.AlertDialog;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentManager;
-
-import de.dennisguse.opentracks.R;
-
-public class ImportFinishedDialogFragment extends DialogFragment {
-
-    private static final String TAG = ImportFinishedDialogFragment.class.getSimpleName();
-
-    private static final String EXTRA_DIRECTORY_NAME_KEY = "directory_name";
-    private static final String EXTRA_IMPORTED_TRACK_COUNT = "imported_track_count";
-    private static final String EXTRA_FILE_COUNT = "file_count";
-
-    private static final String FINISHED_DIALOG_TAG = "finished_dialog_tag";
-
-    private DismissCallback caller;
-
-    public static void showDialog(FragmentManager fragmentManager, String directoryDisplayName, int successCount, int fileCount) {
-        Bundle bundle = new Bundle();
-        bundle.putString(EXTRA_DIRECTORY_NAME_KEY, directoryDisplayName);
-        bundle.putInt(EXTRA_IMPORTED_TRACK_COUNT, successCount);
-        bundle.putInt(EXTRA_FILE_COUNT, fileCount);
-
-        ImportFinishedDialogFragment dialogFragment = new ImportFinishedDialogFragment();
-        dialogFragment.setArguments(bundle);
-        dialogFragment.show(fragmentManager, FINISHED_DIALOG_TAG);
-    }
-
-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (DismissCallback) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + DismissCallback.class.getSimpleName());
-        }
-    }
-
-    @Override
-    @NonNull
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        String directoryDisplayName = getArguments().getString(EXTRA_DIRECTORY_NAME_KEY);
-        int importedTrackCount = getArguments().getInt(EXTRA_IMPORTED_TRACK_COUNT);
-        int totalTrackCount = getArguments().getInt(EXTRA_FILE_COUNT);
-
-        int iconId;
-        int titleId;
-        String message;
-        String totalFiles = getResources().getQuantityString(R.plurals.files, totalTrackCount, totalTrackCount);
-        if (importedTrackCount == totalTrackCount) {
-            if (totalTrackCount == 0) {
-                iconId = R.drawable.ic_dialog_info_24dp;
-                titleId = R.string.import_no_file_title;
-                message = getString(R.string.import_no_file, directoryDisplayName);
-            } else {
-                iconId = R.drawable.ic_dialog_success_24dp;
-                titleId = R.string.generic_success_title;
-                message = getString(R.string.import_success, totalFiles, directoryDisplayName);
-            }
-        } else {
-            iconId = R.drawable.ic_dialog_error_24dp;
-            titleId = R.string.generic_error_title;
-            message = getString(R.string.import_error, importedTrackCount, totalFiles, directoryDisplayName);
-        }
-        Dialog dialog = new AlertDialog.Builder(getContext())
-                .setCancelable(true).setIcon(iconId)
-                .setMessage(message)
-                .setPositiveButton(R.string.generic_ok, (dialogInterface, which) -> {
-                    dialogInterface.dismiss();
-                    caller.onDismissed();
-                })
-                .setTitle(titleId)
-                .create();
-        dialog.setCanceledOnTouchOutside(false);
-        return dialog;
-    }
-
-    @Override
-    public void onDetach() {
-        super.onDetach();
-        caller = null;
-    }
-
-    public interface DismissCallback {
-        void onDismissed();
-    }
-}
@@ -1,230 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks.fragments;
-
-import android.app.Dialog;
-import android.app.ProgressDialog;
-import android.content.Context;
-import android.net.Uri;
-import android.os.Bundle;
-import android.util.Log;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.documentfile.provider.DocumentFile;
-import androidx.fragment.app.DialogFragment;
-import androidx.fragment.app.FragmentManager;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.util.List;
-
-import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.io.file.TrackFileFormat;
-import de.dennisguse.opentracks.io.file.importer.GpxFileTrackImporter;
-import de.dennisguse.opentracks.io.file.importer.KmlFileTrackImporter;
-import de.dennisguse.opentracks.io.file.importer.KmzTrackImporter;
-import de.dennisguse.opentracks.io.file.importer.TrackImporter;
-import de.dennisguse.opentracks.util.DialogUtils;
-import de.dennisguse.opentracks.util.FileUtils;
-
-public class ImportProgressDialogFragment extends DialogFragment {
-
-    private static final String EXTRA_IS_TREE_KEY = "tree_uri";
-
-    private static final String EXTRA_DATA_URI_KEY = "data_uri";
-
-    private static final String TAG = ImportProgressDialogFragment.class.getSimpleName();
-
-    public static final String IMPORT_DIALOG_TAG = "import_dialog_tag";
-
-    private DismissCallback caller;
-
-    private ImportThread importThread;
-
-    private String directoryDisplayName;
-
-    private int trackImportSuccessCount;
-    private int fileCount;
-
-    public static void showDialog(FragmentManager fragmentManager, Uri documentFileUri, boolean isDirectory) {
-        Bundle bundle = new Bundle();
-        bundle.putParcelable(EXTRA_DATA_URI_KEY, documentFileUri);
-        bundle.putBoolean(EXTRA_IS_TREE_KEY, isDirectory);
-
-        ImportProgressDialogFragment dialogFragment = new ImportProgressDialogFragment();
-        dialogFragment.setArguments(bundle);
-        dialogFragment.setRetainInstance(true);
-        dialogFragment.show(fragmentManager, IMPORT_DIALOG_TAG);
-    }
-
-    @Override
-    public void onCreate(@Nullable Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        // This fragment uses a background thread, so it should not be recreated during activity re-creation.
-        setRetainInstance(true);
-
-        Uri directoryUri = getArguments().getParcelable(EXTRA_DATA_URI_KEY);
-        DocumentFile documentFile;
-        if (getArguments().getBoolean(EXTRA_IS_TREE_KEY)) {
-            documentFile = DocumentFile.fromTreeUri(getContext(), directoryUri);
-        } else {
-            documentFile = DocumentFile.fromSingleUri(getContext(), directoryUri);
-        }
-        directoryDisplayName = FileUtils.getPath(documentFile);
-
-        importThread = new ImportThread(documentFile);
-    }
-
-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (DismissCallback) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + DismissCallback.class.getSimpleName());
-        }
-    }
-
-    @Override
-    @NonNull
-    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        ProgressDialog progressDialog = DialogUtils.createHorizontalProgressDialog(
-                getContext(), R.string.import_progress_message,
-                dialogInterface -> {
-                    importThread.interrupt();
-                    dialogInterface.dismiss();
-                    caller.onImportCanceled(directoryDisplayName, trackImportSuccessCount, fileCount);
-                }, directoryDisplayName);
-
-        progressDialog.setIndeterminate(false);
-        progressDialog.setMax(fileCount);
-        progressDialog.setProgress(Math.min(trackImportSuccessCount, fileCount));
-
-        return progressDialog;
-    }
-
-    @Override
-    public void onStart() {
-        super.onStart();
-        setProgress();
-        if (!importThread.isAlive()) {
-            importThread.start();
-        }
-    }
-
-    @Override
-    public void onPause() {
-        super.onPause();
-        if (!importThread.isAlive()) {
-            importThread.interrupt();
-        }
-    }
-
-    @Override
-    public void onDetach() {
-        super.onDetach();
-        caller = null;
-    }
-
-    private void onProgress(int trackImportSuccessCount, int fileCount) {
-        this.trackImportSuccessCount = trackImportSuccessCount;
-        this.fileCount = fileCount;
-        setProgress();
-    }
-
-    private void setProgress() {
-        ProgressDialog dialog = (ProgressDialog) getDialog();
-        if (dialog != null) {
-            dialog.setIndeterminate(false);
-            dialog.setMax(fileCount);
-            dialog.setProgress(Math.min(trackImportSuccessCount, fileCount));
-        }
-    }
-
-    private void onImportCompleted(int successCount, int fileCount) {
-        if (caller != null && !isDetached()) {
-            caller.onImportFinished(directoryDisplayName, successCount, fileCount);
-        }
-        dismissAllowingStateLoss();
-    }
-
-    private class ImportThread extends Thread {
-
-        private final DocumentFile file;
-
-        ImportThread(DocumentFile file) {
-            this.file = file;
-        }
-
-        @Override
-        public void run() {
-            Context context = ImportProgressDialogFragment.this.getContext();
-
-            List<DocumentFile> files = FileUtils.getFiles(file);
-
-            int importedTrackCount = 0;
-            for (int i = 0; i < files.size(); i++) {
-                onProgress(i, files.size());
-
-                if (Thread.interrupted()) {
-                    return;
-                }
-                if (importFile(context, files.get(i))) {
-                    importedTrackCount++;
-                }
-            }
-
-            onImportCompleted(importedTrackCount, files.size());
-        }
-
-        /**
-         * Imports a file.
-         *
-         * @param file the file
-         */
-        private boolean importFile(final Context context, final DocumentFile file) {
-            TrackImporter trackImporter;
-            String fileExtension = FileUtils.getExtension(file);
-
-            if (TrackFileFormat.GPX.getExtension().equals(fileExtension)) {
-                trackImporter = new GpxFileTrackImporter(context);
-            } else if (TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.getExtension().equals(fileExtension)) {
-                trackImporter = new KmlFileTrackImporter(ImportProgressDialogFragment.this.getContext());
-            } else if (TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES.getExtension().equals(fileExtension)) {
-                trackImporter = new KmzTrackImporter(context, file.getUri());
-            } else {
-                Log.i(TAG, "Unsupported file format.");
-                return false;
-            }
-
-            try (InputStream inputStream = context.getContentResolver().openInputStream(file.getUri())) {
-                return trackImporter.importFile(inputStream) != null;
-            } catch (IOException e) {
-                Log.e(TAG, "Unable to import file", e);
-                return false;
-            }
-        }
-    }
-
-    public interface DismissCallback {
-        void onImportCanceled(String directoryDisplayName, int successCount, int fileCount);
-
-        void onImportFinished(String directoryDisplayName, int successCount, int fileCount);
-    }
-}
@@ -8,20 +8,22 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.AdapterView;
 import android.widget.ArrayAdapter;
-import android.widget.ListView;
-import android.widget.Spinner;
 import android.widget.TextView;

 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 import androidx.fragment.app.Fragment;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.ViewModelProvider;
+import androidx.fragment.app.FragmentActivity;

 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.TrackRecordingActivity;
+import de.dennisguse.opentracks.TrackActivityDataHubInterface;
 import de.dennisguse.opentracks.adapters.IntervalStatisticsAdapter;
+import de.dennisguse.opentracks.content.TrackDataHub;
+import de.dennisguse.opentracks.content.TrackDataListener;
+import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TrackPoint;
+import de.dennisguse.opentracks.databinding.IntervalListViewBinding;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.UnitConversions;
 import de.dennisguse.opentracks.viewmodels.IntervalStatistics;
@@ -30,23 +32,22 @@ import de.dennisguse.opentracks.viewmodels.IntervalStatisticsModel;
 /**
 * A fragment to display the intervals from recorded track.
 */
-public class IntervalsFragment extends Fragment {
+public class IntervalsFragment extends Fragment implements TrackDataListener {

    private static final String TAG = IntervalsFragment.class.getSimpleName();

-    private static final String TRACK_ID_KEY = "trackId";
-
    private IntervalStatisticsModel viewModel;
-    private ListView intervalListView;
    protected IntervalStatisticsAdapter.StackMode stackModeListView;
    private IntervalStatisticsModel.IntervalOption selectedInterval;

    private String intervalUnit;
    private IntervalStatisticsAdapter adapter;
-    protected Spinner spinnerIntervals;
    private ArrayAdapter<IntervalStatisticsModel.IntervalOption> spinnerAdapter;

-    private Track.Id trackId;
+    private TrackDataHub trackDataHub;
+    private String category;
+
+    private IntervalListViewBinding viewBinding;

    protected final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
        if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
@@ -54,23 +55,18 @@ public class IntervalsFragment extends Fragment {
            if (adapter != null) {
                adapter.notifyDataSetChanged();
                spinnerAdapter.notifyDataSetChanged();
-                intervalChanged();
            }
        }
    };

-    public static Fragment newInstance(Track.Id trackId) {
-        Bundle bundle = new Bundle();
-        bundle.putParcelable(TRACK_ID_KEY, trackId);
-
-        Fragment fragment = new IntervalsFragment();
-        fragment.setArguments(bundle);
-        return fragment;
+    public static Fragment newInstance() {
+        return new IntervalsFragment();
    }

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.interval_list_view, container, false);
+        viewBinding = IntervalListViewBinding.inflate(inflater, container, false);
+        return viewBinding.getRoot();
    }

    @Override
@@ -80,20 +76,11 @@ public class IntervalsFragment extends Fragment {
        PreferencesUtils.register(getContext(), sharedPreferenceChangeListener);
        intervalUnit = PreferencesUtils.isMetricUnits(getContext()) ? getContext().getString(R.string.unit_kilometer) : getContext().getString(R.string.unit_mile);

-        if (savedInstanceState != null) {
-            trackId = savedInstanceState.getParcelable(TRACK_ID_KEY);
-        } else {
-            trackId = getArguments().getParcelable(TRACK_ID_KEY);
-        }
-
-        intervalListView = view.findViewById(R.id.interval_list);
-        intervalListView.setEmptyView(view.findViewById(R.id.interval_list_empty_view));
+        viewBinding.intervalList.setEmptyView(viewBinding.intervalListEmptyView);

        stackModeListView = IntervalStatisticsAdapter.StackMode.STACK_FROM_TOP;

-        viewModel = new ViewModelProvider(this).get(IntervalStatisticsModel.class);
-
-        spinnerIntervals = view.findViewById(R.id.spinner_intervals);
+        viewModel = new IntervalStatisticsModel();

        spinnerAdapter = new ArrayAdapter<IntervalStatisticsModel.IntervalOption>(getContext(), android.R.layout.simple_spinner_dropdown_item, IntervalStatisticsModel.IntervalOption.values()) {
            @NonNull
@@ -111,22 +98,37 @@ public class IntervalsFragment extends Fragment {
                return v;
            }
        };
-        spinnerIntervals.setAdapter(spinnerAdapter);

-        spinnerIntervals.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+        viewBinding.spinnerIntervals.setAdapter(spinnerAdapter);
+        viewBinding.spinnerIntervals.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {
                selectedInterval = IntervalStatisticsModel.IntervalOption.values()[i];
-                intervalChanged();
+                loadIntervals();
            }

            @Override
            public void onNothingSelected(AdapterView<?> adapterView) {
-
            }
        });
+    }

-        intervalChanged();
+    @Override
+    public void onResume() {
+        super.onResume();
+        resumeTrackDataHub();
+    }
+
+    @Override
+    public void onPause() {
+        super.onPause();
+        pauseTrackDataHub();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        viewBinding = null;
    }

    @Override
@@ -135,40 +137,110 @@ public class IntervalsFragment extends Fragment {

        PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);

-        intervalListView = null;
        adapter = null;
-        spinnerIntervals = null;
        viewModel = null;
    }

-    @Override
-    public void onSaveInstanceState(@NonNull Bundle outState) {
-        super.onSaveInstanceState(outState);
-        outState.putParcelable(TRACK_ID_KEY, trackId);
-    }
-
    /**
     * Update intervals through {@link IntervalStatisticsModel} view model.
     */
-    public void intervalChanged() {
-        if (viewModel == null || intervalListView == null) {
+    protected synchronized void loadIntervals() {
+        if (viewModel == null) {
            return;
        }

-        LiveData<IntervalStatistics> liveData = viewModel.getIntervalStats(trackId, selectedInterval);
-        liveData.observe(getActivity(), intervalStatistics -> {
-            if (intervalStatistics != null) {
-                adapter = new IntervalStatisticsAdapter(getContext(), intervalStatistics.getIntervalList(), stackModeListView);
-                intervalListView.setAdapter(adapter);
-            }
-        });
+        boolean metricUnits = PreferencesUtils.isMetricUnits(getContext());
+        IntervalStatistics intervalStatistics = viewModel.getIntervalStats(metricUnits, selectedInterval);
+        adapter = new IntervalStatisticsAdapter(getContext(), intervalStatistics.getIntervalList(), category, stackModeListView);
+        viewBinding.intervalList.setAdapter(adapter);
    }

-    public void setTrackId(Track.Id trackId) {
-        this.trackId = trackId;
+    /**
+     * Resumes the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
+     */
+    private synchronized void resumeTrackDataHub() {
+        trackDataHub = ((TrackActivityDataHubInterface) getActivity()).getTrackDataHub();
+        trackDataHub.registerTrackDataListener(this, true, false, true, true);
    }

-    public static class IntervalsRecordingFragment extends IntervalsFragment implements TrackRecordingActivity.OnTrackIdListener {
+    /**
+     * Pauses the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
+     */
+    private synchronized void pauseTrackDataHub() {
+        trackDataHub.unregisterTrackDataListener(this);
+        trackDataHub = null;
+    }
+
+    @Override
+    public void onTrackUpdated(Track track) {
+        if (isResumed()) {
+            // Set category.
+            category = track != null ? track.getCategory() : "";
+
+            // Set rate label.
+            boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);
+            viewBinding.intervalRate.setText(reportSpeed ? R.string.stats_speed : R.string.stats_pace);
+        }
+    }
+
+    @Override
+    public void clearTrackPoints() {
+        if (isResumed()) {
+            viewModel.clear();
+        }
+    }
+
+    @Override
+    public void onSampledInTrackPoint(TrackPoint trackPoint) {
+        if (isResumed()) {
+            viewModel.add(trackPoint);
+        }
+    }
+
+    @Override
+    public void onSampledOutTrackPoint(TrackPoint trackPoint) {
+        if (isResumed()) {
+            viewModel.add(trackPoint);
+        }
+    }
+
+    @Override
+    public void onNewTrackPointsDone() {
+        if (isResumed()) {
+            runOnUiThread(this::loadIntervals);
+        }
+    }
+
+    @Override
+    public void clearMarkers() {
+        // We don't care.
+    }
+
+    @Override
+    public void onNewMarker(Marker marker) {
+        // We don't care.
+    }
+
+    @Override
+    public void onNewMarkersDone() {
+        // We don't care.
+    }
+
+    /**
+     * Runs a runnable on the UI thread.
+     *
+     * @param runnable the runnable
+     */
+    private void runOnUiThread(Runnable runnable) {
+        FragmentActivity fragmentActivity = getActivity();
+        if (fragmentActivity != null) {
+            fragmentActivity.runOnUiThread(runnable);
+        }
+    }
+
+    public static class IntervalsRecordingFragment extends IntervalsFragment {
        // Refreshing intervals stats it's not so demanding so 5 seconds is enough to balance performance and user experience.
        private static final long UI_UPDATE_INTERVAL = 5 * UnitConversions.ONE_SECOND_MS;

@@ -184,19 +256,13 @@ public class IntervalsFragment extends Fragment {
            }
        };

-        public static Fragment newInstance(Track.Id trackId) {
-            Bundle bundle = new Bundle();
-            bundle.putParcelable(TRACK_ID_KEY, trackId);
-
-            Fragment fragment = new IntervalsRecordingFragment();
-            fragment.setArguments(bundle);
-            return fragment;
+        public static Fragment newInstance() {
+            return new IntervalsRecordingFragment();
        }

        @Override
        public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
            super.onViewCreated(view, savedInstanceState);
-            ((TrackRecordingActivity) getActivity()).setTrackIdListener(this);
            intervalHandler = new Handler();
            stackModeListView = IntervalStatisticsAdapter.StackMode.STACK_FROM_BOTTOM;
        }
@@ -214,12 +280,7 @@ public class IntervalsFragment extends Fragment {
        }

        private void updateIntervals() {
-            intervalChanged();
-        }
-
-        @Override
-        public void onTrackId(Track.Id trackId) {
-            setTrackId(trackId);
+            loadIntervals();
        }
    }
-}
+}
@@ -30,9 +30,6 @@ import android.view.ViewGroup;
 import android.view.animation.Animation;
 import android.view.animation.Animation.AnimationListener;
 import android.view.animation.AnimationUtils;
-import android.widget.ImageView;
-import android.widget.LinearLayout;
-import android.widget.TextView;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.Fragment;
@@ -42,6 +39,7 @@ import de.dennisguse.opentracks.MarkerEditActivity;
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.Marker;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.MarkerDetailFragmentBinding;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.MarkerUtils;
@@ -64,10 +62,10 @@ public class MarkerDetailFragment extends Fragment {

    private ContentProviderUtils contentProviderUtils;
    private Handler handler;
-    private ImageView photoView;
-    private ImageView textGradient;
-    private LinearLayout markerInfo;
    private Marker marker;
+
+    private MarkerDetailFragmentBinding viewBinding;
+
    private final Runnable hideText = new Runnable() {
        @Override
        public void run() {
@@ -84,12 +82,12 @@ public class MarkerDetailFragment extends Fragment {

                @Override
                public void onAnimationEnd(Animation anim) {
-                    textGradient.setVisibility(View.GONE);
-                    markerInfo.setVisibility(View.GONE);
+                    viewBinding.markerDetailMarkerTextGradient.setVisibility(View.GONE);
+                    viewBinding.markerDetailMarkerInfo.setVisibility(View.GONE);
                }
            });
-            textGradient.startAnimation(animation);
-            markerInfo.startAnimation(animation);
+            viewBinding.markerDetailMarkerTextGradient.startAnimation(animation);
+            viewBinding.markerDetailMarkerInfo.startAnimation(animation);
        }
    };

@@ -119,22 +117,18 @@ public class MarkerDetailFragment extends Fragment {

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        View view = inflater.inflate(R.layout.marker_detail_fragment, container, false);
+        viewBinding = MarkerDetailFragmentBinding.inflate(inflater, container, false);

-        photoView = view.findViewById(R.id.marker_detail_marker_photo);
-        textGradient = view.findViewById(R.id.marker_detail_marker_text_gradient);
-        markerInfo = view.findViewById(R.id.marker_detail_marker_info);
-
-        photoView.setOnClickListener(v -> {
+        viewBinding.markerDetailMarkerPhoto.setOnClickListener(v -> {
            handler.removeCallbacks(hideText);
-            int visibility = markerInfo.getVisibility() == View.GONE ? View.VISIBLE : View.GONE;
-            textGradient.setVisibility(visibility);
-            markerInfo.setVisibility(visibility);
+            int visibility = viewBinding.markerDetailMarkerInfo.getVisibility() == View.GONE ? View.VISIBLE : View.GONE;
+            viewBinding.markerDetailMarkerTextGradient.setVisibility(visibility);
+            viewBinding.markerDetailMarkerInfo.setVisibility(visibility);
            if (visibility == View.VISIBLE) {
                handler.postDelayed(hideText, HIDE_TEXT_DELAY);
            }
        });
-        return view;
+        return viewBinding.getRoot();
    }

    @Override
@@ -153,6 +147,12 @@ public class MarkerDetailFragment extends Fragment {
        handler.removeCallbacks(hideText);
    }

+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        viewBinding = null;
+    }
+
    @Override
    public void setMenuVisibility(boolean menuVisible) {
        super.setMenuVisibility(menuVisible);
@@ -223,30 +223,23 @@ public class MarkerDetailFragment extends Fragment {
        boolean hasPhoto = marker.hasPhoto();
        if (hasPhoto) {
            handler.removeCallbacks(hideText);
-            photoView.setImageURI(marker.getPhotoURI());
+            viewBinding.markerDetailMarkerPhoto.setImageURI(marker.getPhotoURI());
            handler.postDelayed(hideText, HIDE_TEXT_DELAY);
        } else {
-            photoView.setImageResource(MarkerUtils.ICON_ID);
+            viewBinding.markerDetailMarkerPhoto.setImageResource(MarkerUtils.ICON_ID);
        }

-        setName(hasPhoto);
+        ListItemUtils.setTextView(getActivity(), viewBinding.markerDetailMarkerName, marker.getName(), hasPhoto);

-        TextView category = getView().findViewById(R.id.marker_detail_marker_category);
-        ListItemUtils.setTextView(getActivity(), category, StringUtils.getCategory(marker.getCategory()), hasPhoto);

-        TextView description = getView().findViewById(R.id.marker_detail_marker_description);
-        ListItemUtils.setTextView(getActivity(), description, marker.getDescription(), hasPhoto);
+        ListItemUtils.setTextView(getActivity(), viewBinding.markerDetailMarkerCategory, StringUtils.getCategory(marker.getCategory()), hasPhoto);
+
+        ListItemUtils.setTextView(getActivity(), viewBinding.markerDetailMarkerDescription, marker.getDescription(), hasPhoto);

        setLocation(hasPhoto);
    }

-    private void setName(boolean addShadow) {
-        TextView textView = getView().findViewById(R.id.marker_detail_marker_name);
-        ListItemUtils.setTextView(getActivity(), textView, marker.getName(), addShadow);
-    }
-
    private void setLocation(boolean addShadow) {
-        TextView textView = getView().findViewById(R.id.marker_detail_marker_location);
        Location location = marker.getLocation();
        String value;
        if (location == null) {
@@ -257,6 +250,6 @@ public class MarkerDetailFragment extends Fragment {
                    + getString(R.string.stats_longitude) + " "
                    + StringUtils.formatCoordinate(location.getLongitude()) + "]";
        }
-        ListItemUtils.setTextView(getActivity(), textView, value, addShadow);
+        ListItemUtils.setTextView(getActivity(), viewBinding.markerDetailMarkerLocation, value, addShadow);
    }
 }
@@ -22,29 +22,28 @@ import android.util.Pair;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.ImageView;
-import android.widget.TextView;

 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.constraintlayout.widget.Group;
 import androidx.core.content.ContextCompat;
 import androidx.fragment.app.Fragment;

 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.data.Track;
 import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.StatisticsRecordedBinding;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;

 /**
- * A fragment to display track statistics to the user.
+ * A fragment to display track statistics to the user for a recorded {@link Track}.
 *
 * @author Sandor Dornbush
 * @author Rodrigo Damazio
 */
+//TODO During updateUI(): do not call PreferenceUtils (it is slow) rather use sharedPreferenceChangeListener.
 public class StatisticsRecordedFragment extends Fragment {

    private static final String TRACK_ID_KEY = "trackId";
@@ -54,6 +53,8 @@ public class StatisticsRecordedFragment extends Fragment {
    private Track.Id trackId;
    private ContentProviderUtils contentProviderUtils;

+    private StatisticsRecordedBinding viewBinding;
+
    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
        if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
            if (isResumed()) {
@@ -68,29 +69,10 @@ public class StatisticsRecordedFragment extends Fragment {

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.statistics_recorded, container, false);
+        viewBinding = StatisticsRecordedBinding.inflate(inflater, container, false);
+        return viewBinding.getRoot();
    }

-    private TextView totalTimeValueView;
-    private TextView distanceValue;
-    private TextView distanceUnit;
-    private View activityLabel;
-    private ImageView activitySpinner;
-    private TextView movingTimeValue;
-    private TextView speedAvgLabel;
-    private TextView speedAvgValue;
-    private TextView speedAvgUnit;
-    private TextView speedMaxLabel;
-    private TextView speedMaxValue;
-    private TextView speedMaxUnit;
-    private TextView speedMovingLabel;
-    private TextView speedMovingValue;
-    private TextView speedMovingUnit;
-
-    private Group elevationGroup;
-    private TextView elevationTotalGainValue;
-    private TextView elevationTotalGainUnit;
-
    public static StatisticsRecordedFragment newInstance(Track.Id trackId) {
        Bundle bundle = new Bundle();
        bundle.putParcelable(TRACK_ID_KEY, trackId);
@@ -108,37 +90,6 @@ public class StatisticsRecordedFragment extends Fragment {
        contentProviderUtils = new ContentProviderUtils(getContext());
    }

-    @Override
-    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-
-        totalTimeValueView = view.findViewById(R.id.stats_total_time_value);
-
-        distanceValue = view.findViewById(R.id.stats_distance_value);
-        distanceUnit = view.findViewById(R.id.stats_distance_unit);
-
-        activityLabel = view.findViewById(R.id.stats_activity_type_label);
-        activitySpinner = view.findViewById(R.id.stats_activity_type_icon);
-
-        movingTimeValue = view.findViewById(R.id.stats_moving_time_value);
-
-        speedAvgLabel = view.findViewById(R.id.stats_average_speed_label);
-        speedAvgValue = view.findViewById(R.id.stats_average_speed_value);
-        speedAvgUnit = view.findViewById(R.id.stats_average_speed_unit);
-
-        speedMaxLabel = view.findViewById(R.id.stats_max_speed_label);
-        speedMaxValue = view.findViewById(R.id.stats_max_speed_value);
-        speedMaxUnit = view.findViewById(R.id.stats_max_speed_unit);
-
-        speedMovingLabel = view.findViewById(R.id.stats_moving_speed_label);
-        speedMovingValue = view.findViewById(R.id.stats_moving_speed_value);
-        speedMovingUnit = view.findViewById(R.id.stats_moving_speed_unit);
-
-        elevationGroup = view.findViewById(R.id.stats_elevation_group);
-        elevationTotalGainValue = view.findViewById(R.id.stats_elevation_gain_value);
-        elevationTotalGainUnit = view.findViewById(R.id.stats_elevation_gain_unit);
-    }
-
    @Override
    public void onResume() {
        super.onResume();
@@ -150,34 +101,9 @@ public class StatisticsRecordedFragment extends Fragment {
    @Override
    public void onDestroyView() {
        super.onDestroyView();
+        viewBinding = null;

        PreferencesUtils.unregister(getContext(), sharedPreferenceChangeListener);
-
-        totalTimeValueView = null;
-
-        distanceValue = null;
-        distanceUnit = null;
-
-        activityLabel = null;
-        activitySpinner = null;
-
-        movingTimeValue = null;
-
-        speedAvgLabel = null;
-        speedAvgValue = null;
-        speedAvgUnit = null;
-
-        speedMaxLabel = null;
-        speedMaxValue = null;
-        speedMaxUnit = null;
-
-        speedMovingLabel = null;
-        speedMovingValue = null;
-        speedMovingUnit = null;
-
-        elevationGroup = null;
-        elevationTotalGainValue = null;
-        elevationTotalGainUnit = null;
    }

    public void loadStatistics() {
@@ -202,72 +128,66 @@ public class StatisticsRecordedFragment extends Fragment {
            double totalDistance = trackStatistics == null ? Double.NaN : trackStatistics.getTotalDistance();
            Pair<String, String> parts = StringUtils.getDistanceParts(getContext(), totalDistance, metricUnits);

-            distanceValue.setText(parts.first);
-            distanceUnit.setText(parts.second);
+            viewBinding.statsDistanceValue.setText(parts.first);
+            viewBinding.statsDistanceUnit.setText(parts.second);
        }

        // Set activity type
        {
            String trackIconValue = TrackIconUtils.getIconValue(getContext(), category);
-
-            activityLabel.setVisibility(trackIconValue != null ? View.VISIBLE : View.GONE);
-
-            activitySpinner.setVisibility(trackIconValue != null ? View.VISIBLE : View.GONE);
-            activitySpinner.setEnabled(false);
-            if (trackIconValue != null) {
-                activitySpinner.setImageDrawable(ContextCompat.getDrawable(getContext(), TrackIconUtils.getIconDrawable(trackIconValue)));
-            }
+            viewBinding.statsActivityTypeIcon.setEnabled(false);
+            viewBinding.statsActivityTypeIcon.setImageDrawable(ContextCompat.getDrawable(getContext(), TrackIconUtils.getIconDrawable(trackIconValue)));
        }

        // Set time and start datetime
        if (trackStatistics != null) {
-            movingTimeValue.setText(StringUtils.formatElapsedTime(trackStatistics.getMovingTime()));
-            totalTimeValueView.setText(StringUtils.formatElapsedTime(trackStatistics.getTotalTime()));
+            viewBinding.statsMovingTimeValue.setText(StringUtils.formatElapsedTime(trackStatistics.getMovingTime()));
+            viewBinding.statsTotalTimeValue.setText(StringUtils.formatElapsedTime(trackStatistics.getTotalTime()));
        }

        // Set average speed/pace
        {
            double speed = trackStatistics != null ? trackStatistics.getAverageSpeed() : Double.NaN;
-            speedAvgLabel.setText(reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace);
+            viewBinding.statsAverageSpeedLabel.setText(reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedAvgValue.setText(parts.first);
-            speedAvgUnit.setText(parts.second);
+            viewBinding.statsAverageSpeedValue.setText(parts.first);
+            viewBinding.statsAverageSpeedUnit.setText(parts.second);
        }

        // Set max speed/pace
        {
            double speed = trackStatistics == null ? Double.NaN : trackStatistics.getMaxSpeed();

-            speedMaxLabel.setText(reportSpeed ? R.string.stats_max_speed : R.string.stats_fastest_pace);
+            viewBinding.statsMaxSpeedLabel.setText(reportSpeed ? R.string.stats_max_speed : R.string.stats_fastest_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedMaxValue.setText(parts.first);
-            speedMaxUnit.setText(parts.second);
+            viewBinding.statsMaxSpeedValue.setText(parts.first);
+            viewBinding.statsMaxSpeedUnit.setText(parts.second);
        }

        // Set moving speed/pace
        {
            double speed = trackStatistics != null ? trackStatistics.getAverageMovingSpeed() : Double.NaN;

-            speedMovingLabel.setText(reportSpeed ? R.string.stats_average_moving_speed : R.string.stats_average_moving_pace);
+            viewBinding.statsMovingSpeedLabel.setText(reportSpeed ? R.string.stats_average_moving_speed : R.string.stats_average_moving_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedMovingValue.setText(parts.first);
-            speedMovingUnit.setText(parts.second);
+            viewBinding.statsMovingSpeedValue.setText(parts.first);
+            viewBinding.statsMovingSpeedUnit.setText(parts.second);
        }

        // Set elevation gain
        {
            // Make elevation visible?
            boolean showElevation = PreferencesUtils.isShowStatsElevation(getContext());
-            elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
+            viewBinding.statsElevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);

            Float elevationGain_m = trackStatistics != null ? trackStatistics.getTotalElevationGain() : null;

            Pair<String, String> parts = StringUtils.formatElevation(getContext(), elevationGain_m, metricUnits);
-            elevationTotalGainValue.setText(parts.first);
-            elevationTotalGainUnit.setText(parts.second);
+            viewBinding.statsElevationGainValue.setText(parts.first);
+            viewBinding.statsElevationGainUnit.setText(parts.second);
        }
    }
 }
@@ -10,12 +10,8 @@ import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.Spinner;
-import android.widget.TextView;

 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.constraintlayout.widget.Group;
 import androidx.fragment.app.Fragment;

 import de.dennisguse.opentracks.R;
@@ -28,6 +24,7 @@ import de.dennisguse.opentracks.content.data.TrackPoint;
 import de.dennisguse.opentracks.content.sensor.SensorDataCycling;
 import de.dennisguse.opentracks.content.sensor.SensorDataHeartRate;
 import de.dennisguse.opentracks.content.sensor.SensorDataSet;
+import de.dennisguse.opentracks.databinding.StatisticsRecordingBinding;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.services.TrackRecordingServiceInterface;
 import de.dennisguse.opentracks.stats.TrackStatistics;
@@ -35,15 +32,16 @@ import de.dennisguse.opentracks.util.LocationUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StringUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
-import de.dennisguse.opentracks.util.TrackPointUtils;
 import de.dennisguse.opentracks.util.UnitConversions;

 /**
- * A fragment to display track statistics to the user.
+ * A fragment to display track statistics to the user for a currently recording {@link Track}.
 *
 * @author Sandor Dornbush
 * @author Rodrigo Damazio
 */
+//TODO isRecording should not be relevant anymore as we now have StatisticRecordedFragment.
+//TODO During updateUI(): do not call PreferenceUtils (it is slow) rather use sharedPreferenceChangeListener.
 public class StatisticsRecordingFragment extends Fragment implements TrackDataListener {

    private static final String TAG = StatisticsRecordingFragment.class.getSimpleName();
@@ -59,53 +57,31 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
    private TrackStatistics lastTrackStatistics;

    private String category = "";
-    @Deprecated //TODO This should be handled somewhere else; not in the UI.
-    private int recordingGpsAccuracy;
+
+    private StatisticsRecordingBinding viewBinding;

    public static Fragment newInstance() {
        return new StatisticsRecordingFragment();
    }

-    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
-        @Override
-        public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
-                if (isResumed()) {
-                    getActivity().runOnUiThread(() -> {
-                        if (isResumed()) {
-                            updateUI();
-                        }
-                    });
-                }
-            }
-            if (PreferencesUtils.isKey(getContext(), R.string.recording_track_id_key, key)) {
-                recordingGpsAccuracy = PreferencesUtils.getRecordingGPSAccuracy(getContext());
-                if (PreferencesUtils.getRecordingTrackId(getContext()).isValid()) {
-                    // A recording track id has been set -> Resumes track and starts timer.
-                    resumeTrackDataHub();
-                    trackRecordingServiceConnection.startConnection(getContext());
-
-                    handlerUpdateUI.post(updateUIeachSecond);
-                }
+    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
+        if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
+            if (isResumed()) {
+                getActivity().runOnUiThread(() -> {
+                    if (isResumed()) {
+                        updateUI();
+                    }
+                });
            }
        }
    };

    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        return inflater.inflate(R.layout.statistics_recording, container, false);
+        viewBinding = StatisticsRecordingBinding.inflate(inflater, container, false);
+        return viewBinding.getRoot();
    }

-    /* Views */
-    private View sensorHorizontalLine;
-    private Group heartRateGroup;
-    private TextView heartRateValueView;
-    private TextView heartRateSensorView;
-    private Group cadenceGroup;
-    private TextView cadenceValueView;
-    private TextView cadenceSensorView;
-
-    private TextView totalTimeValueView;
    private final Runnable updateUIeachSecond = new Runnable() {
        public void run() {
            if (isResumed() && isSelectedTrackRecording()) {
@@ -118,102 +94,21 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
            }
        }
    };
-    private TextView distanceValue;
-    private TextView distanceUnit;
-    private View activityLabel;
-    private Spinner activitySpinner;
-    private TextView movingTimeValue;
-    private TextView speedAvgLabel;
-    private TextView speedAvgValue;
-    private TextView speedAvgUnit;
-    private TextView speedMaxLabel;
-    private TextView speedMaxValue;
-    private TextView speedMaxUnit;
-    private TextView speedMovingLabel;
-    private TextView speedMovingValue;
-    private TextView speedMovingUnit;
-    private TextView speedLabel;
-    private TextView speedValue;
-    private TextView speedUnit;
-    private Group elevationGroup;
-    private TextView elevationCurrentValue;
-    private TextView elevationCurrentUnit;
-    private TextView elevationTotalGainValue;
-    private TextView elevationTotalGainUnit;
-    private Group coordinateGroup;
-    private TextView latitudeValue;
-    private TextView longitudeValue;
-
-    @Override
-    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
-        super.onViewCreated(view, savedInstanceState);
-
-        sensorHorizontalLine = view.findViewById(R.id.stats_sensor_horizontal_line);
-
-        heartRateGroup = view.findViewById(R.id.stats_sensor_heart_rate_group);
-        heartRateValueView = view.findViewById(R.id.stats_sensor_heart_rate_value);
-        heartRateSensorView = view.findViewById(R.id.stats_sensor_heart_rate_sensor_value);
-
-        cadenceGroup = view.findViewById(R.id.stats_sensor_cadence_group);
-        cadenceValueView = view.findViewById(R.id.stats_sensor_cadence_value);
-        cadenceSensorView = view.findViewById(R.id.stats_sensor_cadence_sensor_value);
-
-        totalTimeValueView = view.findViewById(R.id.stats_total_time_value);
-
-        distanceValue = view.findViewById(R.id.stats_distance_value);
-        distanceUnit = view.findViewById(R.id.stats_distance_unit);
-
-        activityLabel = view.findViewById(R.id.stats_activity_type_label);
-        activitySpinner = view.findViewById(R.id.stats_activity_type_icon);
-
-        movingTimeValue = view.findViewById(R.id.stats_moving_time_value);
-
-        speedAvgLabel = view.findViewById(R.id.stats_average_speed_label);
-        speedAvgValue = view.findViewById(R.id.stats_average_speed_value);
-        speedAvgUnit = view.findViewById(R.id.stats_average_speed_unit);
-
-        speedMaxLabel = view.findViewById(R.id.stats_max_speed_label);
-        speedMaxValue = view.findViewById(R.id.stats_max_speed_value);
-        speedMaxUnit = view.findViewById(R.id.stats_max_speed_unit);
-
-        speedMovingLabel = view.findViewById(R.id.stats_moving_speed_label);
-        speedMovingValue = view.findViewById(R.id.stats_moving_speed_value);
-        speedMovingUnit = view.findViewById(R.id.stats_moving_speed_unit);
-
-        speedLabel = view.findViewById(R.id.stats_speed_label);
-        speedValue = view.findViewById(R.id.stats_speed_value);
-        speedUnit = view.findViewById(R.id.stats_speed_unit);
-
-        elevationGroup = view.findViewById(R.id.stats_elevation_group);
-        elevationCurrentValue = view.findViewById(R.id.stats_elevation_current_value);
-        elevationCurrentUnit = view.findViewById(R.id.stats_elevation_current_unit);
-
-        elevationTotalGainValue = view.findViewById(R.id.stats_elevation_gain_value);
-        elevationTotalGainUnit = view.findViewById(R.id.stats_elevation_gain_unit);
-
-        coordinateGroup = view.findViewById(R.id.stats_coordinate_group);
-
-        latitudeValue = view.findViewById(R.id.stats_latitude_value);
-        longitudeValue = view.findViewById(R.id.stats_longitude_value);
-    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

-        recordingGpsAccuracy = Integer.parseInt(getResources().getString(R.string.recording_gps_accuracy_default));
-
        handlerUpdateUI = new Handler();

-        Spinner activityTypeIcon = getView().findViewById(R.id.stats_activity_type_icon);
-        activityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(getActivity(), ""));
-        activityTypeIcon.setOnTouchListener((v, event) -> {
+        viewBinding.statsActivityTypeIcon.setAdapter(TrackIconUtils.getIconSpinnerAdapter(getActivity(), ""));
+        viewBinding.statsActivityTypeIcon.setOnTouchListener((v, event) -> {
            if (event.getAction() == MotionEvent.ACTION_UP) {
                ((TrackRecordingActivity) getActivity()).chooseActivityType(category);
            }
            return true;
        });
-        activityTypeIcon.setOnKeyListener((v, keyCode, event) -> {
+        viewBinding.statsActivityTypeIcon.setOnKeyListener((v, keyCode, event) -> {
            if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
                ((TrackRecordingActivity) getActivity()).chooseActivityType(category);
            }
@@ -249,52 +144,7 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
    @Override
    public void onDestroyView() {
        super.onDestroyView();
-        sensorHorizontalLine = null;
-
-        heartRateGroup = null;
-        heartRateValueView = null;
-        heartRateSensorView = null;
-        cadenceGroup = null;
-        cadenceValueView = null;
-        cadenceSensorView = null;
-
-        totalTimeValueView = null;
-
-        distanceValue = null;
-        distanceUnit = null;
-
-        activityLabel = null;
-        activitySpinner = null;
-
-        movingTimeValue = null;
-
-        speedAvgLabel = null;
-        speedAvgValue = null;
-        speedAvgUnit = null;
-
-        speedMaxLabel = null;
-        speedMaxValue = null;
-        speedMaxUnit = null;
-
-        speedMovingLabel = null;
-        speedMovingValue = null;
-        speedMovingUnit = null;
-
-        speedLabel = null;
-        speedValue = null;
-        speedUnit = null;
-
-        elevationGroup = null;
-        elevationCurrentValue = null;
-        elevationCurrentUnit = null;
-
-        elevationTotalGainValue = null;
-        elevationTotalGainUnit = null;
-
-        coordinateGroup = null;
-
-        latitudeValue = null;
-        longitudeValue = null;
+        viewBinding = null;
    }

    @Override
@@ -343,9 +193,8 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
                    TrackPoint trackPoint = lastTrackPoint; //NOTE: There seems to be a race condition; just fix the symptom for now.
                    if (trackPoint != null) {
                        boolean hasFix = !LocationUtils.isLocationOld(trackPoint.getLocation());
-                        boolean hasGoodFix = TrackPointUtils.fulfillsAccuracy(trackPoint, recordingGpsAccuracy);

-                        if (!hasFix || !hasGoodFix) {
+                        if (!hasFix) {
                            lastTrackPoint = null;
                        }
                    }
@@ -417,66 +266,58 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
    private void updateSensorDataUI() {
        TrackRecordingServiceInterface trackRecordingService = trackRecordingServiceConnection.getServiceIfBound();

-        SensorDataSet sensorDataSet = null;
-        Float elevationGain_m = null;
        if (trackRecordingService == null) {
            Log.d(TAG, "Cannot get the track recording service.");
        } else {
-            sensorDataSet = trackRecordingService.getSensorData();
-            elevationGain_m = trackRecordingService.getElevationGain_m();
+            SensorDataSet sensorDataSet = trackRecordingService.getSensorData();
+            if (sensorDataSet != null) {
+                setHeartRateSensorData(sensorDataSet);
+                setCadenceSensorData(sensorDataSet);
+                setSpeedSensorData(sensorDataSet, isSelectedTrackRecording());
+            }
+
+            setTotalElevationGain(trackRecordingService.getElevationGain_m());
        }
-
-        setHeartRateSensorData(sensorDataSet);
-        setCadenceSensorData(sensorDataSet);
-        setSpeedSensorData(sensorDataSet, isSelectedTrackRecording());
-
-        setTotalElevationGain(elevationGain_m);
    }

    private void setHeartRateSensorData(SensorDataSet sensorDataSet) {
-        int isVisible = View.VISIBLE;
-        if (PreferencesUtils.isBluetoothHeartRateSensorAddressNone(getContext())) {
-            isVisible = View.GONE;
-        }
-        heartRateGroup.setVisibility(isVisible);
+        int isVisible = sensorDataSet.getHeartRate() != null ? View.VISIBLE : View.GONE;
+        viewBinding.statsSensorHeartRateGroup.setVisibility(isVisible);
        setVisibilitySensorHorizontalLine();

        String sensorValue = getContext().getString(R.string.value_unknown);
        String sensorName = getContext().getString(R.string.value_unknown);
-        if (sensorDataSet != null && sensorDataSet.getHeartRate() != null) {
+        if (sensorDataSet.getHeartRate() != null) {
            SensorDataHeartRate data = sensorDataSet.getHeartRate();

-            sensorName = data.getSensorName();
+            sensorName = data.getSensorNameOrAddress();
            if (data.hasHeartRate_bpm() && data.isRecent()) {
                sensorValue = StringUtils.formatDecimal(data.getHeartRate_bpm(), 0);
            }
        }

-        heartRateSensorView.setText(sensorName);
-        heartRateValueView.setText(sensorValue);
+        viewBinding.statsSensorHeartRateSensorValue.setText(sensorName);
+        viewBinding.statsSensorHeartRateValue.setText(sensorValue);
    }

    private void setCadenceSensorData(SensorDataSet sensorDataSet) {
-        int isVisible = View.VISIBLE;
-        if (PreferencesUtils.isBluetoothCyclingCadenceSensorAddressNone(getContext())) {
-            isVisible = View.GONE;
-        }
-        cadenceGroup.setVisibility(isVisible);
+        int isVisible = sensorDataSet.getCyclingCadence() != null ? View.VISIBLE : View.GONE;
+        viewBinding.statsSensorCadenceGroup.setVisibility(isVisible);
        setVisibilitySensorHorizontalLine();

        String sensorValue = getContext().getString(R.string.value_unknown);
        String sensorName = getContext().getString(R.string.value_unknown);
-        if (sensorDataSet != null && sensorDataSet.getCyclingCadence() != null) {
+        if (sensorDataSet.getCyclingCadence() != null) {
            SensorDataCycling.Cadence data = sensorDataSet.getCyclingCadence();
-            sensorName = data.getSensorName();
+            sensorName = data.getSensorNameOrAddress();

            if (data.hasCadence_rpm() && data.isRecent()) {
                sensorValue = StringUtils.formatDecimal(data.getCadence_rpm(), 0);
            }
        }

-        cadenceSensorView.setText(sensorName);
-        cadenceValueView.setText(sensorValue);
+        viewBinding.statsSensorCadenceSensorValue.setText(sensorName);
+        viewBinding.statsSensorCadenceValue.setText(sensorValue);
    }

    // Set elevation gain
@@ -495,16 +336,16 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
        }

        Pair<String, String> parts = StringUtils.formatElevation(getContext(), totalElevationGain, metricUnits);
-        elevationTotalGainValue.setText(parts.first);
-        elevationTotalGainUnit.setText(parts.second);
+        viewBinding.statsElevationGainValue.setText(parts.first);
+        viewBinding.statsElevationGainUnit.setText(parts.second);
    }

    /**
     * If cadence and hear rate groups are invisible then sensor horizontal line hast to be invisible too.
     */
    private void setVisibilitySensorHorizontalLine() {
-        if (cadenceGroup.getVisibility() != View.VISIBLE && heartRateGroup.getVisibility() != View.VISIBLE) {
-            sensorHorizontalLine.setVisibility(View.GONE);
+        if (viewBinding.statsSensorCadenceGroup.getVisibility() != View.VISIBLE && viewBinding.statsSensorHeartRateGroup.getVisibility() != View.VISIBLE) {
+            viewBinding.statsSensorHorizontalLine.setVisibility(View.GONE);
        }
    }

@@ -532,64 +373,59 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
            double totalDistance = lastTrackStatistics == null ? Double.NaN : lastTrackStatistics.getTotalDistance();
            Pair<String, String> parts = StringUtils.getDistanceParts(getContext(), totalDistance, metricUnits);

-            distanceValue.setText(parts.first);
-            distanceUnit.setText(parts.second);
+            viewBinding.statsDistanceValue.setText(parts.first);
+            viewBinding.statsDistanceUnit.setText(parts.second);
        }

        // Set activity type
        {
-            activityLabel.setVisibility(trackIconValue != null ? View.VISIBLE : View.GONE);
-
-            activitySpinner.setVisibility(trackIconValue != null ? View.VISIBLE : View.GONE);
-            activitySpinner.setEnabled(isRecording);
-            if (trackIconValue != null) {
-                TrackIconUtils.setIconSpinner(activitySpinner, trackIconValue);
-            }
+            viewBinding.statsActivityTypeIcon.setEnabled(isRecording);
+            TrackIconUtils.setIconSpinner(viewBinding.statsActivityTypeIcon, trackIconValue);
        }

        // Set time
        if (lastTrackStatistics != null) {
-            movingTimeValue.setText(StringUtils.formatElapsedTime(lastTrackStatistics.getMovingTime()));
+            viewBinding.statsMovingTimeValue.setText(StringUtils.formatElapsedTime(lastTrackStatistics.getMovingTime()));
            updateTotalTime();
        }

        // Set average speed/pace
        {
            double speed = lastTrackStatistics != null ? lastTrackStatistics.getAverageSpeed() : Double.NaN;
-            speedAvgLabel.setText(reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace);
+            viewBinding.statsAverageSpeedLabel.setText(reportSpeed ? R.string.stats_average_speed : R.string.stats_average_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedAvgValue.setText(parts.first);
-            speedAvgUnit.setText(parts.second);
+            viewBinding.statsAverageSpeedValue.setText(parts.first);
+            viewBinding.statsAverageSpeedUnit.setText(parts.second);
        }

        // Set max speed/pace
        {
            double speed = lastTrackStatistics == null ? Double.NaN : lastTrackStatistics.getMaxSpeed();

-            speedMaxLabel.setText(reportSpeed ? R.string.stats_max_speed : R.string.stats_fastest_pace);
+            viewBinding.statsMaxSpeedLabel.setText(reportSpeed ? R.string.stats_max_speed : R.string.stats_fastest_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedMaxValue.setText(parts.first);
-            speedMaxUnit.setText(parts.second);
+            viewBinding.statsMaxSpeedValue.setText(parts.first);
+            viewBinding.statsMaxSpeedUnit.setText(parts.second);
        }

        // Set moving speed/pace
        {
            double speed = lastTrackStatistics != null ? lastTrackStatistics.getAverageMovingSpeed() : Double.NaN;

-            speedMovingLabel.setText(reportSpeed ? R.string.stats_average_moving_speed : R.string.stats_average_moving_pace);
+            viewBinding.statsMovingSpeedLabel.setText(reportSpeed ? R.string.stats_average_moving_speed : R.string.stats_average_moving_pace);

            Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-            speedMovingValue.setText(parts.first);
-            speedMovingUnit.setText(parts.second);
+            viewBinding.statsMovingSpeedValue.setText(parts.first);
+            viewBinding.statsMovingSpeedUnit.setText(parts.second);
        }

        // Set elevation (gain)
        {
            // Make elevation visible?
            boolean showElevation = PreferencesUtils.isShowStatsElevation(getContext());
-            elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
+            viewBinding.statsElevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
        }
    }

@@ -600,7 +436,7 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
        } else {
            totalTime = lastTrackStatistics.getTotalTime();
        }
-        totalTimeValueView.setText(StringUtils.formatElapsedTime(totalTime));
+        viewBinding.statsTotalTimeValue.setText(StringUtils.formatElapsedTime(totalTime));
    }

    /**
@@ -625,28 +461,28 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi

        // Set elevation
        boolean showElevation = PreferencesUtils.isShowStatsElevation(getContext());
-        elevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);
+        viewBinding.statsElevationGroup.setVisibility(showElevation ? View.VISIBLE : View.GONE);

        if (showElevation) {
            // Current elevation
            Float altitude = lastTrackPoint != null && lastTrackPoint.hasAltitude() ? (float) lastTrackPoint.getAltitude() : null;
            Pair<String, String> parts = StringUtils.formatElevation(getContext(), altitude, metricUnits);
-            elevationCurrentValue.setText(parts.first);
-            elevationCurrentUnit.setText(parts.second);
+            viewBinding.statsElevationCurrentValue.setText(parts.first);
+            viewBinding.statsElevationCurrentUnit.setText(parts.second);
        }

        // Set coordinate
        boolean showCoordinate = PreferencesUtils.isStatsShowCoordinate(getContext());

-        coordinateGroup.setVisibility(showCoordinate ? View.VISIBLE : View.GONE);
+        viewBinding.statsCoordinateGroup.setVisibility(showCoordinate ? View.VISIBLE : View.GONE);
        if (showCoordinate) {
            double latitude = lastTrackPoint != null ? lastTrackPoint.getLatitude() : Double.NaN;
            String latitudeText = Double.isNaN(latitude) || Double.isInfinite(latitude) ? getContext().getString(R.string.value_unknown) : StringUtils.formatCoordinate(latitude);
-            latitudeValue.setText(latitudeText);
+            viewBinding.statsLatitudeValue.setText(latitudeText);

            double longitude = lastTrackPoint != null ? lastTrackPoint.getLongitude() : Double.NaN;
            String longitudeText = Double.isNaN(longitude) || Double.isInfinite(longitude) ? getContext().getString(R.string.value_unknown) : StringUtils.formatCoordinate(longitude);
-            longitudeValue.setText(longitudeText);
+            viewBinding.statsLongitudeValue.setText(longitudeText);
        }
    }

@@ -654,10 +490,10 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
        boolean metricUnits = PreferencesUtils.isMetricUnits(getContext());
        boolean reportSpeed = PreferencesUtils.isReportSpeed(getContext(), category);

-        speedLabel.setText(reportSpeed ? R.string.stats_speed : R.string.stats_pace);
+        viewBinding.statsSpeedLabel.setText(reportSpeed ? R.string.stats_speed : R.string.stats_pace);

        Pair<String, String> parts = StringUtils.getSpeedParts(getContext(), speed, metricUnits, reportSpeed);
-        speedValue.setText(parts.first);
-        speedUnit.setText(parts.second);
+        viewBinding.statsSpeedValue.setText(parts.first);
+        viewBinding.statsSpeedUnit.setText(parts.second);
    }
 }
@@ -0,0 +1,67 @@
+package de.dennisguse.opentracks.io.file;
+
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.os.Bundle;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;
+
+import java.util.ArrayList;
+
+import de.dennisguse.opentracks.R;
+
+public class ErrorListDialog extends DialogFragment {
+
+    public static final String TAG = ErrorListDialog.class.getSimpleName();
+
+    private static final String EXTRA_TITLE = "extra_title";
+    private static final String EXTRA_ERROR_LIST = "extra_error_list";
+
+    private ArrayList<String> errorList;
+    private String title;
+
+    public static void showDialog(FragmentManager fragmentManager, String title, ArrayList<String> errorList) {
+        Bundle bundle = new Bundle();
+        bundle.putString(EXTRA_TITLE, title);
+        bundle.putStringArrayList(EXTRA_ERROR_LIST, errorList);
+
+        ErrorListDialog errorListDialog = new ErrorListDialog();
+        errorListDialog.setArguments(bundle);
+        errorListDialog.setRetainInstance(true);
+        errorListDialog.show(fragmentManager, TAG);
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        if (savedInstanceState == null) {
+            title = getArguments().getString(EXTRA_TITLE);
+            errorList = getArguments().getStringArrayList(EXTRA_ERROR_LIST);
+        } else {
+            title = savedInstanceState.getString(EXTRA_TITLE);
+            errorList = savedInstanceState.getStringArrayList(EXTRA_ERROR_LIST);
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(@NonNull Bundle outState) {
+        super.onSaveInstanceState(outState);
+        outState.putString(EXTRA_TITLE, title);
+        outState.putStringArrayList(EXTRA_ERROR_LIST, errorList);
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        final String[] tracks = errorList.stream().toArray(String[]::new);
+        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity())
+                .setTitle(title)
+                .setItems(tracks, null)
+                .setPositiveButton(R.string.generic_ok, (dialog, which) -> dismiss());
+        AlertDialog dialog = alertDialogBuilder.create();
+        return dialog;
+    }
+}
@@ -1,21 +0,0 @@
-package de.dennisguse.opentracks.io.file;
-
-import androidx.documentfile.provider.DocumentFile;
-
-import de.dennisguse.opentracks.content.data.Track;
-
-public class ExportFile {
-
-    public static DocumentFile getExportDocumentFile(Track.Id trackId, String trackFileFormatExtension, DocumentFile directory, String mimeType) {
-        String fileName = getExportFileNameByTrackId(trackId, trackFileFormatExtension);
-        DocumentFile file = directory.findFile(fileName);
-        if (file == null) {
-            file = directory.createFile(mimeType, fileName);
-        }
-        return file;
-    }
-
-    private static String getExportFileNameByTrackId(Track.Id trackId, String trackFileFormatExtension) {
-        return trackId.getId() + "." + trackFileFormatExtension;
-    }
-}
@@ -16,58 +16,381 @@

 package de.dennisguse.opentracks.io.file.exporter;

+import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
+import android.os.Handler;
+import android.view.View;
+import android.widget.Toast;

 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.Toolbar;
+import androidx.core.content.ContextCompat;
+import androidx.documentfile.provider.DocumentFile;
 import androidx.fragment.app.FragmentActivity;

-import de.dennisguse.opentracks.fragments.ExportFinishedDialogFragment;
-import de.dennisguse.opentracks.fragments.ExportProgressDialogFragment;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.LinkedBlockingQueue;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.data.TracksColumns;
+import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.databinding.ExportActivityBinding;
+import de.dennisguse.opentracks.io.file.ErrorListDialog;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.util.ExportUtils;
+import de.dennisguse.opentracks.util.FileUtils;

 /**
 * An activity for saving tracks to the external storage.
 *
 * @author Rodrigo Damazio
 */
-public class ExportActivity extends FragmentActivity implements ExportProgressDialogFragment.DismissCallback, ExportFinishedDialogFragment.DismissCallback {
+public class ExportActivity extends FragmentActivity implements ExportServiceResultReceiver.Receiver {
+
+    private static final String TAG = ExportActivity.class.getSimpleName();

    public static final String EXTRA_DIRECTORY_URI_KEY = "directory_uri";
-
    public static final String EXTRA_TRACKFILEFORMAT_KEY = "trackfileformat";

-    private static final String BUNDLE_ACTIVITY_RECREATED = "activity_recreated";
+    private static final String BUNDLE_AUTO_CONFLICT = "auto_conflict";
+    private static final String BUNDLE_SUCCESS_COUNT = "track_export_success_count";
+    private static final String BUNDLE_ERROR_COUNT = "track_export_error_ount";
+    private static final String BUNDLE_OVERWRITTEN_COUNT = "track_export_overwritten_count";
+    private static final String BUNDLE_SKIPPED_COUNT = "track_export_skipped_count";
+    private static final String BUNDLE_TOTAL_COUNT = "track_export_total_count";
+    private static final String BUNDLE_DIRECTORY_FILES = "track_directory_files";
+    private static final String BUNDLE_TRACK_ERRORS = "track_errors";
+
+    private static final int CONFLICT_NONE = 0;
+    private static final int CONFLICT_OVERWRITE = 1;
+    private static final int CONFLICT_SKIP = 2;
+
+    private TrackFileFormat trackFileFormat;
+    private Uri directoryUri;
+
+    private ExportServiceResultReceiver resultReceiver;
+
+    private String directoryDisplayName;
+    private List<String> directoryFiles;
+
+    private int trackExportSuccessCount;
+    private int trackExportErrorCount;
+    private int trackExportOverwrittenCount;
+    private int trackExportSkippedCount;
+    private int trackExportTotalCount;
+
+    boolean doubleBackToCancel = false;
+
+    private ExportActivityBinding viewBinding;
+
+    private ArrayList<String> trackErrors = new ArrayList<>();
+
+    private int autoConflict;
+
+    private ContentProviderUtils contentProviderUtils;
+
+    // List of tracks to be exported.
+    private final ArrayList<Track.Id> trackIds = new ArrayList<>();
+
+    private final LinkedBlockingQueue<PendingConflict> conflictsQueue = new LinkedBlockingQueue<>();
+    private final Handler conflictsHandler = new Handler();
+
+    private final Runnable conflictsRunnable = new Runnable() {
+        @Override
+        public void run() {
+            if (conflictsQueue.size() > 0) {
+                PendingConflict conflict = conflictsQueue.peek();
+                if (conflict.resolve()) {
+                    conflictsQueue.remove(conflict);
+                    if (!conflictsQueue.isEmpty()) {
+                        conflictsHandler.post(conflictsRunnable);
+                    }
+                    return;
+                }
+
+                viewBinding.exportProgressLeftButton.setOnClickListener((view) -> {
+                    setConflictVisibility(View.GONE);
+                    conflict.skip();
+                    conflictsQueue.remove(conflict);
+                    if (!conflictsQueue.isEmpty()) {
+                        conflictsHandler.post(conflictsRunnable);
+                    }
+                });
+
+                viewBinding.exportProgressRightButton.setOnClickListener((view) -> {
+                    setConflictVisibility(View.GONE);
+                    conflict.overwrite();
+                    conflictsQueue.remove(conflict);
+                    if (!conflictsQueue.isEmpty()) {
+                        conflictsHandler.post(conflictsRunnable);
+                    }
+                });
+            }
+        }
+    };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
+        viewBinding = ExportActivityBinding.inflate(getLayoutInflater());
+        setContentView(viewBinding.getRoot());

-        if (savedInstanceState == null || !savedInstanceState.getBoolean(BUNDLE_ACTIVITY_RECREATED, false)) {
-            Uri directoryUri = getIntent().getParcelableExtra(EXTRA_DIRECTORY_URI_KEY);
-            TrackFileFormat trackfileformat = (TrackFileFormat) getIntent().getSerializableExtra(EXTRA_TRACKFILEFORMAT_KEY);
-            ExportProgressDialogFragment.showDialog(getSupportFragmentManager(), trackfileformat, directoryUri);
+        directoryUri = getIntent().getParcelableExtra(EXTRA_DIRECTORY_URI_KEY);
+        trackFileFormat = (TrackFileFormat) getIntent().getSerializableExtra(EXTRA_TRACKFILEFORMAT_KEY);
+
+        contentProviderUtils = new ContentProviderUtils(this);
+
+        DocumentFile documentFile = DocumentFile.fromTreeUri(this, directoryUri);
+        directoryDisplayName = FileUtils.getPath(documentFile);
+
+        viewBinding.toolbar.toolbar.setTitle(getString(R.string.export_progress_message, directoryDisplayName));
+
+        resultReceiver = new ExportServiceResultReceiver(new Handler(), this);
+
+        if (savedInstanceState == null) {
+            autoConflict = CONFLICT_NONE;
+            setProgress();
+            new Thread(() -> {
+                directoryFiles = ExportUtils.getAllFiles(ExportActivity.this, documentFile.getUri());
+                runOnUiThread(() -> initExport(0));
+            }).start();
+        } else {
+            autoConflict = savedInstanceState.getInt(BUNDLE_AUTO_CONFLICT);
+            trackExportSuccessCount = savedInstanceState.getInt(BUNDLE_SUCCESS_COUNT);
+            trackExportErrorCount = savedInstanceState.getInt(BUNDLE_ERROR_COUNT);
+            trackExportOverwrittenCount = savedInstanceState.getInt(BUNDLE_OVERWRITTEN_COUNT);
+            trackExportSkippedCount = savedInstanceState.getInt(BUNDLE_SKIPPED_COUNT);
+            trackExportTotalCount = savedInstanceState.getInt(BUNDLE_TOTAL_COUNT);
+            directoryFiles = savedInstanceState.getStringArrayList(BUNDLE_DIRECTORY_FILES);
+            trackErrors = savedInstanceState.getStringArrayList(BUNDLE_TRACK_ERRORS);
+
+            setProgress();
+            initExport(getTotalDone());
        }
    }

    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
-        outState.putBoolean(BUNDLE_ACTIVITY_RECREATED, true);
+        outState.putInt(BUNDLE_AUTO_CONFLICT, autoConflict);
+        outState.putInt(BUNDLE_SUCCESS_COUNT, trackExportSuccessCount);
+        outState.putInt(BUNDLE_ERROR_COUNT, trackExportErrorCount);
+        outState.putInt(BUNDLE_OVERWRITTEN_COUNT, trackExportOverwrittenCount);
+        outState.putInt(BUNDLE_SKIPPED_COUNT, trackExportSkippedCount);
+        outState.putInt(BUNDLE_TOTAL_COUNT, trackExportTotalCount);
+        outState.putStringArrayList(BUNDLE_DIRECTORY_FILES, (ArrayList<String>) directoryFiles);
+        outState.putStringArrayList(BUNDLE_TRACK_ERRORS, trackErrors);
    }

    @Override
-    public void onExportCanceled(String directoryDisplayName, int successCount, int fileCount) {
-        onExportFinished(directoryDisplayName, successCount, fileCount);
+    protected void onDestroy() {
+        super.onDestroy();
+        conflictsQueue.clear();
+        trackIds.clear();
    }

    @Override
-    public void onExportFinished(final String directoryDisplayName, final int successCount, final int fileCount) {
-        runOnUiThread(() -> ExportFinishedDialogFragment.showDialog(getSupportFragmentManager(), directoryDisplayName, successCount, fileCount));
+    public void onBackPressed() {
+        if (doubleBackToCancel || getTotalDone() == trackExportTotalCount) {
+            super.onBackPressed();
+            return;
+        }
+
+        this.doubleBackToCancel = true;
+        Toast.makeText(this, getString(R.string.generic_click_twice_cancel), Toast.LENGTH_SHORT).show();
+
+        new Handler().postDelayed(() -> doubleBackToCancel=false, 2000);
+    }
+
+    private void initExport(int from) {
+        try (Cursor cursor = contentProviderUtils.getTrackCursor(null, null, TracksColumns._ID)) {
+            if (cursor == null) {
+                onExportEnded();
+                return;
+            }
+
+            trackExportTotalCount = cursor.getCount();
+            viewBinding.exportProgressTotal.setText("" + trackExportTotalCount);
+            for (int i = from; i < trackExportTotalCount; i++) {
+                cursor.moveToPosition(i);
+                Track track = ContentProviderUtils.createTrack(cursor);
+                trackIds.add(track.getId());
+            }
+
+            if (!trackIds.isEmpty()) {
+                export(trackIds.get(0));
+            } else {
+                onExportEnded();
+            }
+        }
+    }
+
+    /**
+     * Enqueue track identified by trackId to be exported if not exported already or there is a conflict resolution.
+     *
+     * @param trackId            the track's id.
+     * @param conflictResolution conflict resolution to be applied if needed.
+     */
+    private void export(Track.Id trackId, int conflictResolution) {
+        boolean fileExists = ExportUtils.isExportFileExists(trackId, trackFileFormat.getExtension(), directoryFiles);
+
+        if (fileExists && conflictResolution == CONFLICT_NONE) {
+            conflict(trackId);
+        } else if (fileExists && conflictResolution == CONFLICT_SKIP) {
+            trackExportSkippedCount++;
+            onExportCompleted(trackId);
+        } else {
+            ExportService.enqueue(this, resultReceiver, trackId, trackFileFormat, directoryUri);
+        }
+    }
+
+    private void export(Track.Id trackId) {
+        export(trackId, autoConflict);
+    }
+
+    private void setConflictVisibility(int visibility) {
+        viewBinding.exportProgressAlertIcon.setVisibility(visibility);
+        viewBinding.exportProgressAlertMsg.setVisibility(visibility);
+        viewBinding.exportProgressApplyToAll.setVisibility(visibility);
+        viewBinding.exportProgressLeftButton.setVisibility(visibility);
+        viewBinding.exportProgressRightButton.setVisibility(visibility);
+    }
+
+    private int getTotalDone() {
+        return trackExportSuccessCount + trackExportOverwrittenCount + trackExportSkippedCount + trackExportErrorCount;
+    }
+
+    private void setProgress() {
+        int done = getTotalDone();
+
+        viewBinding.exportProgressDone.setText("" + done);
+        viewBinding.exportProgressTotal.setText("" + trackExportTotalCount);
+
+        viewBinding.exportProgressBar.setProgress((int) ((float) done / (float) trackExportTotalCount * 100f));
+        viewBinding.exportProgressSummary.setText(getString(R.string.export_progress_review, getTotalDone(), trackExportSuccessCount, trackExportOverwrittenCount, trackExportSkippedCount, trackExportErrorCount));
+    }
+
+    private void onExportCompleted(Track.Id trackId) {
+        trackIds.remove(trackId);
+        setProgress();
+        if (trackIds.isEmpty()) {
+            onExportEnded();
+            return;
+        }
+        export(trackIds.get(0));
+    }
+
+    private void onExportEnded() {
+        viewBinding.exportProgressRightButton.setVisibility(View.VISIBLE);
+        viewBinding.exportProgressRightButton.setText(getString(R.string.generic_ok));
+        viewBinding.exportProgressRightButton.setOnClickListener((view) -> finish());
+
+        viewBinding.exportProgressAlertIcon.setVisibility(View.VISIBLE);
+        viewBinding.exportProgressAlertMsg.setVisibility(View.VISIBLE);
+        if (trackExportErrorCount > 0) {
+            viewBinding.exportProgressLeftButton.setVisibility(View.VISIBLE);
+            viewBinding.exportProgressLeftButton.setText(getString(R.string.generic_show_errors));
+            viewBinding.exportProgressLeftButton.setOnClickListener((view) -> ErrorListDialog.showDialog(getSupportFragmentManager(), getString(R.string.export_track_errors), trackErrors));
+            viewBinding.exportProgressAlertIcon.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_report_problem_24));
+            String msg = getResources().getQuantityString(R.plurals.generic_completed_with_errors, trackExportErrorCount, trackExportErrorCount);
+            viewBinding.exportProgressAlertMsg.setText(msg);
+        } else {
+            viewBinding.exportProgressLeftButton.setVisibility(View.GONE);
+            viewBinding.exportProgressAlertIcon.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_dialog_success_24dp));
+            viewBinding.exportProgressAlertMsg.setText(getString(R.string.generic_completed));
+        }
+
    }

    @Override
-    public void onDismissed() {
-        finish();
+    public void onReceiveResult(int resultCode, Bundle resultData) {
+        if (resultData == null) {
+            throw new RuntimeException(TAG + ": onReceiveResult resultData NULL");
+        }
+
+        Track.Id trackId = resultData.getParcelable(ExportServiceResultReceiver.RESULT_EXTRA_TRACK_ID);
+
+        switch (resultCode) {
+            case ExportServiceResultReceiver.RESULT_CODE_ERROR:
+                trackExportErrorCount++;
+                Track track = contentProviderUtils.getTrack(trackId);
+                trackErrors.add(track.getName());
+                break;
+            case ExportServiceResultReceiver.RESULT_CODE_SUCCESS:
+                if (ExportUtils.isExportFileExists(trackId, trackFileFormat.getExtension(), directoryFiles)) {
+                    trackExportOverwrittenCount++;
+                } else {
+                    trackExportSuccessCount++;
+                }
+                break;
+            default:
+                throw new RuntimeException(TAG + ": export service result code invalid: " + resultCode);
+        }
+
+        onExportCompleted(trackId);
+    }
+
+    private void conflict(Track.Id trackId) {
+        PendingConflict newConflict = new PendingConflict(trackId);
+        conflictsQueue.add(newConflict);
+
+        if (conflictsQueue.size() == 1) {
+            conflictsHandler.post(conflictsRunnable);
+        }
+    }
+
+    /**
+     * Handle conflicts (exporting file already exists).
+     */
+    private class PendingConflict {
+        private final Track.Id trackId;
+
+        public PendingConflict(Track.Id trackId) {
+            this.trackId = trackId;
+        }
+
+        /**
+         * Try to resolve the conflict if user gave the info needed.
+         * Otherwise shows the buttons and views needed to gives the user the possibility of take a decision.
+         *
+         * @return true if it could resolve the conflict or false otherwise.
+         */
+        public boolean resolve() {
+            if (autoConflict == CONFLICT_NONE) {
+                Track track = contentProviderUtils.getTrack(trackId);
+                viewBinding.exportProgressAlertIcon.setImageDrawable(getDrawable(R.drawable.ic_report_problem_24));
+                viewBinding.exportProgressAlertMsg.setText(getString(R.string.export_track_already_exists_msg, track.getName()));
+                setConflictVisibility(View.VISIBLE);
+                return false;
+            }
+
+            export(trackId);
+            return true;
+        }
+
+        /**
+         * Overwrite the export file and set the autoConflict if user set the "do it for all" switch button.
+         */
+        public void overwrite() {
+            export(trackId, CONFLICT_OVERWRITE);
+
+            if (viewBinding.exportProgressApplyToAll.isChecked()) {
+                autoConflict = CONFLICT_OVERWRITE;
+            }
+        }
+
+        /**
+         * Skip the export file and set the autoConflict if user set the "do it for all" switch button.
+         */
+        public void skip() {
+            export(trackId, CONFLICT_SKIP);
+
+            if (viewBinding.exportProgressApplyToAll.isChecked()) {
+                autoConflict = CONFLICT_SKIP;
+            }
+        }
    }
 }
@@ -0,0 +1,61 @@
+package de.dennisguse.opentracks.io.file.exporter;
+
+import android.app.job.JobService;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.ResultReceiver;
+
+import androidx.annotation.NonNull;
+import androidx.core.app.JobIntentService;
+import androidx.documentfile.provider.DocumentFile;
+
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.content.provider.ContentProviderUtils;
+import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.util.ExportUtils;
+
+public class ExportService extends JobIntentService {
+
+    private static final int JOB_ID = 1;
+
+    private static final String EXTRA_RECEIVER = "extra_receiver";
+    private static final String EXTRA_TRACK_ID = "extra_track_id";
+    private static final String EXTRA_TRACK_FILE_FORMAT = "extra_track_file_format";
+    private static final String EXTRA_DIRECTORY_URI = "extra_directory_uri";
+
+    public static void enqueue(Context context, ExportServiceResultReceiver receiver, Track.Id trackId, TrackFileFormat trackFileFormat, Uri directoryUri) {
+        Intent intent = new Intent(context, JobService.class);
+        intent.putExtra(EXTRA_RECEIVER, receiver);
+        intent.putExtra(EXTRA_TRACK_ID, trackId);
+        intent.putExtra(EXTRA_TRACK_FILE_FORMAT, trackFileFormat);
+        intent.putExtra(EXTRA_DIRECTORY_URI, directoryUri);
+        enqueueWork(context, ExportService.class, JOB_ID, intent);
+    }
+
+    @Override
+    protected void onHandleWork(@NonNull Intent intent) {
+        // Get all data.
+        ResultReceiver resultReceiver = intent.getParcelableExtra(EXTRA_RECEIVER);
+        Track.Id trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
+        TrackFileFormat trackFileFormat = (TrackFileFormat) intent.getSerializableExtra(EXTRA_TRACK_FILE_FORMAT);
+        Uri directoryUri = intent.getParcelableExtra(EXTRA_DIRECTORY_URI);
+
+        // Build directory file.
+        DocumentFile directoryFile = DocumentFile.fromTreeUri(this, directoryUri);
+
+        // Export.
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
+        Track track = contentProviderUtils.getTrack(trackId);
+        boolean success = ExportUtils.exportTrack(this, trackFileFormat, directoryFile, track);
+
+        // Prepare resultCode and bundle to send to the receiver.
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(ExportServiceResultReceiver.RESULT_EXTRA_TRACK_ID, trackId);
+
+        // Send result to the receiver.
+        int resultCode = success ? ExportServiceResultReceiver.RESULT_CODE_SUCCESS : ExportServiceResultReceiver.RESULT_CODE_ERROR;
+        resultReceiver.send(resultCode, bundle);
+    }
+}
@@ -0,0 +1,35 @@
+package de.dennisguse.opentracks.io.file.exporter;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.ResultReceiver;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Create a new ResultReceive to receive results.
+ * Your {@link #onReceiveResult} method will be called from the thread running <var>handler</var> if given, or from an arbitrary thread if null.
+ */
+public class ExportServiceResultReceiver extends ResultReceiver {
+
+    public static final int RESULT_CODE_SUCCESS = 1;
+    public static final int RESULT_CODE_ERROR = 0;
+
+    public static final String RESULT_EXTRA_TRACK_ID = "result_extra_track_id";
+
+    private final Receiver receiver;
+
+    public ExportServiceResultReceiver(Handler handler, @NonNull Receiver receiver) {
+        super(handler);
+        this.receiver = receiver;
+    }
+
+    @Override
+    protected void onReceiveResult(int resultCode, Bundle resultData) {
+        receiver.onReceiveResult(resultCode, resultData);
+    }
+
+    public interface Receiver {
+        void onReceiveResult(int resultCode, Bundle resultData);
+    }
+}
@@ -134,13 +134,18 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
            saxParser.parse(inputStream, this);
            Log.d(TAG, "Total import time: " + (System.currentTimeMillis() - start) + "ms");
            if (trackIds.size() != 1) {
-                throw new MultiTracksImportException();
+                // TODO Multi track is not supported yet.
+                throw new ImportParserException("Multi track not supported");
            }
            return trackIds.get(0);
-        } catch (MultiTracksImportException | IOException | SAXException | SQLiteConstraintException | ParserConfigurationException e) {
+        } catch (IOException | SAXException | ParserConfigurationException e) {
            Log.e(TAG, "Unable to import file", e);
            cleanImport();
-            return null;
+            throw new ImportParserException(e);
+        } catch (SQLiteConstraintException e) {
+            Log.e(TAG, "Unable to import file", e);
+            cleanImport();
+            throw new ImportAlreadyExistsException(e);
        }
    }

@@ -514,9 +519,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
     * Cleans up import.
     */
    private void cleanImport() {
-        for (Track.Id trackId : trackIds) {
-            contentProviderUtils.deleteTrack(context, trackId);
-        }
+        contentProviderUtils.deleteTracks(context, trackIds);
    }

    /**
@@ -550,9 +553,4 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
        // The number of buffered locations
        int numBufferedTrackPoints = 0;
    }
-
-    @Deprecated
-    //TODO According to the reader AND writer, we support multiple tracks per file; we should implement it here also.
-    private static class MultiTracksImportException extends RuntimeException {
-    }
 }
@@ -4,9 +4,11 @@ import android.app.Activity;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.provider.DocumentsContract;

 import androidx.annotation.Nullable;
 import androidx.appcompat.app.AppCompatActivity;
+import androidx.documentfile.provider.DocumentFile;

 import de.dennisguse.opentracks.io.file.exporter.ExportActivity;
 import de.dennisguse.opentracks.util.IntentUtils;
@@ -21,31 +23,46 @@ public abstract class DirectoryChooserActivity extends AppCompatActivity {
        super.onCreate(savedInstanceState);

        Intent intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
-        configureDirectoryChooserIntent(intent);
-
-        startActivityForResult(intent, DIRECTORY_PICKER_REQUEST_CODE);
+        DocumentFile directoryUri = configureDirectoryChooserIntent(intent);
+        if (directoryUri == null) {
+            startActivityForResult(intent, DIRECTORY_PICKER_REQUEST_CODE);
+        } else {
+            startActivity(createNextActivityIntent(directoryUri.getUri())); //TODO Refactor to DocumentFile
+            finish();
+        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent resultData) {
        super.onActivityResult(requestCode, resultCode, resultData);
+        onActivityResultCustom(requestCode, resultCode, resultData);
+    }
+
+    protected void onActivityResultCustom(int requestCode, int resultCode, @Nullable Intent resultData) {
        if (requestCode == DIRECTORY_PICKER_REQUEST_CODE) {
            if (resultCode == Activity.RESULT_OK) {
                Uri directoryUri = resultData.getData();

+                int takeFlags = resultData.getFlags();
+                takeFlags &= (Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+                getContentResolver().takePersistableUriPermission(directoryUri, takeFlags);
+
                startActivity(createNextActivityIntent(directoryUri));
            }
-            finish();
        }
+        finish();
    }

-    protected void configureDirectoryChooserIntent(Intent intent) {
+    /**
+     * @return null if directory needs to be selected.
+     */
+    protected DocumentFile configureDirectoryChooserIntent(Intent intent) {
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
+        return null;
    }

    protected abstract Intent createNextActivityIntent(Uri directoryUri);

-
    public static class ImportDirectoryChooserActivity extends DirectoryChooserActivity {

        @Override
@@ -58,6 +75,14 @@ public abstract class DirectoryChooserActivity extends AppCompatActivity {

    public static class ExportDirectoryChooserActivity extends DirectoryChooserActivity {

+        @Override
+        protected DocumentFile configureDirectoryChooserIntent(Intent intent) {
+            super.configureDirectoryChooserIntent(intent);
+            intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_PERSISTABLE_URI_PERMISSION);
+
+            return PreferencesUtils.getDefaultExportDirectoryUri(this);
+        }
+
        @Override
        protected Intent createNextActivityIntent(Uri directoryUri) {
            Intent intent = IntentUtils.newIntent(this, ExportActivity.class);
@@ -65,11 +90,44 @@ public abstract class DirectoryChooserActivity extends AppCompatActivity {
            intent.putExtra(ExportActivity.EXTRA_TRACKFILEFORMAT_KEY, PreferencesUtils.getExportTrackFileFormat(this));
            return intent;
        }
+    }
+
+    public static class DefaultTrackExportDirectoryChooserActivity extends DirectoryChooserActivity {

        @Override
-        protected void configureDirectoryChooserIntent(Intent intent) {
+        protected void onActivityResultCustom(int requestCode, int resultCode, @Nullable Intent resultData) {
+            if (requestCode == DIRECTORY_PICKER_REQUEST_CODE) {
+                switch (resultCode) {
+                    case RESULT_OK:
+                        Uri directoryUri = resultData.getData();
+
+                        PreferencesUtils.setDefaultExportDirectoryUri(this, directoryUri);
+                        IntentUtils.persistDirectoryAccessPermission(getApplicationContext(), resultData, directoryUri);
+                        break;
+                    case RESULT_CANCELED:
+                        PreferencesUtils.setDefaultExportDirectoryUri(this, null);
+                        //TODO Remove stored permission contentResolver.releasePersistableUriPermission
+                        break;
+                }
+
+            }
+            finish();
+        }
+
+        @Override
+        protected DocumentFile configureDirectoryChooserIntent(Intent intent) {
            super.configureDirectoryChooserIntent(intent);
            intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+            if (PreferencesUtils.isDefaultExportDirectoryUri(this)) {
+                intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, PreferencesUtils.getDefaultExportDirectoryUri(this).getUri());
+            }
+            return null;
+        }
+
+        @Override
+        protected Intent createNextActivityIntent(Uri directoryUri) {
+            finish();
+            return null;
        }
    }
 }
@@ -135,6 +135,7 @@ public class GpxFileTrackImporter extends AbstractFileTrackImporter {
                if (content != null) {
                    speed = content.trim();
                }
+                break;
            case TAG_EXTENSION_HEARTRATE:
                if (content != null) {
                    heartrate = content.trim();
@@ -149,6 +150,7 @@ public class GpxFileTrackImporter extends AbstractFileTrackImporter {
                if (content != null) {
                    uuid = content.trim();
                }
+                break;
        }

        // Reset element content
@@ -16,59 +16,158 @@

 package de.dennisguse.opentracks.io.file.importer;

+import android.net.Uri;
 import android.os.Bundle;
+import android.os.Handler;
+import android.view.View;
+import android.widget.Toast;

 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.Toolbar;
+import androidx.documentfile.provider.DocumentFile;
 import androidx.fragment.app.FragmentActivity;
+import androidx.lifecycle.ViewModelProvider;

-import de.dennisguse.opentracks.fragments.ImportFinishedDialogFragment;
-import de.dennisguse.opentracks.fragments.ImportProgressDialogFragment;
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.databinding.ImportActivityBinding;
+import de.dennisguse.opentracks.io.file.ErrorListDialog;

 /**
 * An activity to import files from the external storage.
 *
 * @author Rodrigo Damazio
 */
-public class ImportActivity extends FragmentActivity implements ImportProgressDialogFragment.DismissCallback, ImportFinishedDialogFragment.DismissCallback {
+public class ImportActivity extends FragmentActivity {

    private static final String TAG = ImportActivity.class.getSimpleName();

    public static final String EXTRA_DIRECTORY_URI_KEY = "directory_uri";

-    private static final String BUNDLE_ACTIVITY_RECREATED = "activity_recreated";
+    private static final String BUNDLE_TOOLBAR_TITLE = "toolbar_title";
+    private static final String BUNDLE_DOCUMENT_URI = "document_uri";
+    private static final String BUNDLE_IS_DIRECTORY = "is_directory";
+
+    private ImportActivityBinding viewBinding;
+
+    boolean doubleBackToCancel = false;
+
+    private Uri documentUri;
+    private boolean isDirectory;
+    private String toolbarTitle;
+
+    private ImportViewModel viewModel;
+    private ImportViewModel.Summary summary;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
+        viewBinding = ImportActivityBinding.inflate(getLayoutInflater());
+        setContentView(viewBinding.getRoot());

-        if (savedInstanceState == null || !savedInstanceState.getBoolean(BUNDLE_ACTIVITY_RECREATED, false)) {
+        Toolbar toolbar = findViewById(R.id.toolbar);
+
+        final DocumentFile documentFile;
+        if (savedInstanceState == null) {
            if (getIntent().getData() != null) {
-                ImportProgressDialogFragment.showDialog(getSupportFragmentManager(), getIntent().getData(), false);
+                documentUri = getIntent().getData();
+                isDirectory = false;
+            } else if (getIntent().getClipData() != null && getIntent().getClipData().getItemCount() > 0) {
+                documentUri = getIntent().getClipData().getItemAt(0).getUri();
+                isDirectory = false;
            } else {
                // Started from DirectoryChooserActivity
-                ImportProgressDialogFragment.showDialog(getSupportFragmentManager(), getIntent().getParcelableExtra(EXTRA_DIRECTORY_URI_KEY), true);
+                documentUri = getIntent().getParcelableExtra(EXTRA_DIRECTORY_URI_KEY);
+                isDirectory = true;
            }
+
+            documentFile = isDirectory ? DocumentFile.fromTreeUri(this, documentUri) : DocumentFile.fromSingleUri(this, documentUri);
+            toolbarTitle = getString(R.string.import_progress_message, documentFile.getName());
+        } else {
+            documentUri = savedInstanceState.getParcelable(BUNDLE_DOCUMENT_URI);
+            toolbarTitle = savedInstanceState.getString(BUNDLE_TOOLBAR_TITLE);
+            isDirectory = savedInstanceState.getBoolean(BUNDLE_IS_DIRECTORY);
+
+            documentFile = isDirectory ? DocumentFile.fromTreeUri(this, documentUri) : DocumentFile.fromSingleUri(this, documentUri);
        }
+
+        toolbar.setTitle(toolbarTitle);
+        initViews();
+
+        viewModel = new ViewModelProvider(this).get(ImportViewModel.class);
+        viewModel.getImportData(documentFile).observe(this, data -> {
+            summary = data;
+            setProgress();
+        });
    }

    @Override
    protected void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
-        outState.putBoolean(BUNDLE_ACTIVITY_RECREATED, true);
+        outState.putParcelable(BUNDLE_DOCUMENT_URI, documentUri);
+        outState.putBoolean(BUNDLE_IS_DIRECTORY, isDirectory);
+        outState.putString(BUNDLE_TOOLBAR_TITLE, toolbarTitle);
    }

    @Override
-    public void onImportCanceled(String directoryDisplayName, int successCount, int fileCount) {
-        onImportFinished(directoryDisplayName, successCount, fileCount);
+    public void onBackPressed() {
+        if (doubleBackToCancel || getTotalDone() == summary.getTotalCount()) {
+            super.onBackPressed();
+            viewModel.cancel();
+            getViewModelStore().clear();
+            return;
+        }
+
+        this.doubleBackToCancel = true;
+        Toast.makeText(this, getString(R.string.generic_click_twice_cancel), Toast.LENGTH_SHORT).show();
+
+        new Handler().postDelayed(() -> doubleBackToCancel=false, 2000);
    }

-    @Override
-    public void onImportFinished(final String directoryDisplayName, final int successCount, final int fileCount) {
-        runOnUiThread(() -> ImportFinishedDialogFragment.showDialog(getSupportFragmentManager(), directoryDisplayName, successCount, fileCount));
+    private void initViews() {
+        viewBinding.importProgressDone.setText("0");
+        viewBinding.importProgressTotal.setText("0");
+        viewBinding.importProgressSummary.setText(getString(R.string.import_progress_review, 0, 0, 0, 0));
    }

-    @Override
-    public void onDismissed() {
-        finish();
+    private int getTotalDone() {
+        return summary.getSuccessCount() + summary.getExistsCount() + summary.getErrorCount();
+    }
+
+    private void setProgress() {
+        int done = getTotalDone();
+
+        viewBinding.importProgressDone.setText("" + done);
+        viewBinding.importProgressTotal.setText("" + summary.getTotalCount());
+
+        viewBinding.importProgressBar.setProgress((int) ((float) done / (float) summary.getTotalCount() * 100f));
+        viewBinding.importProgressSummary.setText(getString(R.string.import_progress_review, getTotalDone(), summary.getSuccessCount(), summary.getExistsCount(), summary.getErrorCount()));
+
+        if (done == summary.getTotalCount()) {
+            onImportEnded();
+        }
+    }
+
+    private void onImportEnded() {
+        viewBinding.importProgressRightButton.setVisibility(View.VISIBLE);
+        viewBinding.importProgressRightButton.setText(getString(R.string.generic_ok));
+        viewBinding.importProgressRightButton.setOnClickListener((view) -> {
+            getViewModelStore().clear();
+            finish();
+        });
+
+        viewBinding.importProgressAlertMsg.setVisibility(View.VISIBLE);
+        viewBinding.importProgressAlertIcon.setVisibility(View.VISIBLE);
+        if (summary.getErrorCount() > 0) {
+            viewBinding.importProgressLeftButton.setVisibility(View.VISIBLE);
+            viewBinding.importProgressLeftButton.setText(getString(R.string.generic_show_errors));
+            viewBinding.importProgressLeftButton.setOnClickListener((view) -> ErrorListDialog.showDialog(getSupportFragmentManager(), getString(R.string.import_error_list_dialog_title), summary.getFileErrors()));
+            viewBinding.importProgressAlertIcon.setImageDrawable(getDrawable(R.drawable.ic_report_problem_24));
+            String msg = getResources().getQuantityString(R.plurals.generic_completed_with_errors, summary.getErrorCount(), summary.getErrorCount());
+            viewBinding.importProgressAlertMsg.setText(msg);
+        } else {
+            viewBinding.importProgressLeftButton.setVisibility(View.GONE);
+            viewBinding.importProgressAlertIcon.setImageDrawable(getDrawable(R.drawable.ic_dialog_success_24dp));
+            viewBinding.importProgressAlertMsg.setText(getString(R.string.generic_completed));
+        }
    }
 }
@@ -0,0 +1,7 @@
+package de.dennisguse.opentracks.io.file.importer;
+
+class ImportAlreadyExistsException extends RuntimeException {
+    public ImportAlreadyExistsException(Exception e) {
+        super(e);
+    }
+}
@@ -0,0 +1,11 @@
+package de.dennisguse.opentracks.io.file.importer;
+
+class ImportParserException extends RuntimeException {
+    public ImportParserException(String msg) {
+        super(msg);
+    }
+
+    public ImportParserException(Exception e) {
+        super(e);
+    }
+}
@@ -0,0 +1,90 @@
+package de.dennisguse.opentracks.io.file.importer;
+
+import android.app.job.JobService;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.ResultReceiver;
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+import androidx.core.app.JobIntentService;
+import androidx.documentfile.provider.DocumentFile;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.util.FileUtils;
+
+public class ImportService extends JobIntentService {
+
+    private static final String TAG = ImportService.class.getSimpleName();
+
+    private static final int JOB_ID = 2;
+
+    private static final String EXTRA_RECEIVER = "extra_receiver";
+    private static final String EXTRA_URI = "extra_uri";
+
+    private ResultReceiver resultReceiver;
+
+    public static void enqueue(Context context, ImportServiceResultReceiver receiver, Uri uri) {
+        Intent intent = new Intent(context, JobService.class);
+        intent.putExtra(EXTRA_RECEIVER, receiver);
+        intent.putExtra(EXTRA_URI, uri);
+        enqueueWork(context, ImportService.class, JOB_ID, intent);
+    }
+
+    @Override
+    protected void onHandleWork(@NonNull Intent intent) {
+        resultReceiver = intent.getParcelableExtra(EXTRA_RECEIVER);
+        Uri uri = intent.getParcelableExtra(EXTRA_URI);
+        importFile(DocumentFile.fromSingleUri(this, uri));
+    }
+
+    private void importFile(DocumentFile file) {
+        TrackImporter trackImporter;
+        String fileExtension = FileUtils.getExtension(file);
+
+        if (TrackFileFormat.GPX.getExtension().equals(fileExtension)) {
+            trackImporter = new GpxFileTrackImporter(this);
+        } else if (TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.getExtension().equals(fileExtension)) {
+            trackImporter = new KmlFileTrackImporter(this);
+        } else if (TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES.getExtension().equals(fileExtension)) {
+            trackImporter = new KmzTrackImporter(this, file.getUri());
+        } else {
+            Log.d(TAG, "Unsupported file format.");
+            sendResult(ImportServiceResultReceiver.RESULT_CODE_ERROR, null, file.getName(), getString(R.string.import_unsupported_format));
+            return;
+        }
+
+        try (InputStream inputStream = getContentResolver().openInputStream(file.getUri())) {
+            Track.Id trackId = trackImporter.importFile(inputStream);
+            if (trackId != null) {
+                sendResult(ImportServiceResultReceiver.RESULT_CODE_IMPORTED, trackId, file.getName(), getString(R.string.import_file_imported, file.getName()));
+            } else {
+                sendResult(ImportServiceResultReceiver.RESULT_CODE_ERROR, trackId, file.getName(), getString(R.string.import_unable_to_import_file, file.getName()));
+            }
+        } catch (IOException e) {
+            Log.d(TAG, "Unable to import file", e);
+            sendResult(ImportServiceResultReceiver.RESULT_CODE_ERROR, null, file.getName(), getString(R.string.import_unable_to_import_file, e.getMessage()));
+        } catch (ImportParserException e) {
+            Log.d(TAG, "Parser error: " + e.getMessage(), e);
+            sendResult(ImportServiceResultReceiver.RESULT_CODE_ERROR, null, file.getName(), getString(R.string.import_parser_error, e.getMessage()));
+        } catch (ImportAlreadyExistsException e) {
+            Log.d(TAG, "Track already exists: " + e.getMessage(), e);
+            sendResult(ImportServiceResultReceiver.RESULT_CODE_ALREADY_EXISTS, null, file.getName(), e.getMessage());
+        }
+    }
+
+    private void sendResult(int resultCode, Track.Id trackId, String fileName, String message) {
+        Bundle bundle = new Bundle();
+        bundle.putParcelable(ImportServiceResultReceiver.RESULT_EXTRA_TRACK_ID, trackId);
+        bundle.putString(ImportServiceResultReceiver.RESULT_EXTRA_FILENAME, fileName);
+        bundle.putString(ImportServiceResultReceiver.RESULT_EXTRA_MESSAGE, message);
+        resultReceiver.send(resultCode, bundle);
+    }
+}
@@ -0,0 +1,38 @@
+package de.dennisguse.opentracks.io.file.importer;
+
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.ResultReceiver;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Create a new ResultReceive to receive results.
+ * Your {@link #onReceiveResult} method will be called from the thread running <var>handler</var> if given, or from an arbitrary thread if null.
+ */
+public class ImportServiceResultReceiver extends ResultReceiver {
+
+    public static final int RESULT_CODE_ERROR = 0;
+    public static final int RESULT_CODE_IMPORTED = 1;
+    public static final int RESULT_CODE_ALREADY_EXISTS = 2;
+
+    public static final String RESULT_EXTRA_TRACK_ID = "result_track_id";
+    public static final String RESULT_EXTRA_FILENAME = "result_extra_filename";
+    public static final String RESULT_EXTRA_MESSAGE = "result_extra_message";
+
+    private final Receiver receiver;
+
+    public ImportServiceResultReceiver(Handler handler, @NonNull Receiver receiver) {
+        super(handler);
+        this.receiver = receiver;
+    }
+
+    @Override
+    protected void onReceiveResult(int resultCode, Bundle resultData) {
+        receiver.onReceiveResult(resultCode, resultData);
+    }
+
+    public interface Receiver {
+        void onReceiveResult(int resultCode, Bundle resultData);
+    }
+}
@@ -0,0 +1,117 @@
+package de.dennisguse.opentracks.io.file.importer;
+
+import android.app.Application;
+import android.os.Bundle;
+import android.os.Handler;
+
+import androidx.annotation.NonNull;
+import androidx.documentfile.provider.DocumentFile;
+import androidx.lifecycle.AndroidViewModel;
+import androidx.lifecycle.LiveData;
+import androidx.lifecycle.MutableLiveData;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.util.FileUtils;
+
+public class ImportViewModel extends AndroidViewModel implements ImportServiceResultReceiver.Receiver {
+
+    private static final String TAG = ImportViewModel.class.getSimpleName();
+
+    private MutableLiveData<Summary> importData;
+    private final ImportServiceResultReceiver resultReceiver;
+    private final Summary summary;
+    private boolean cancel = false;
+    private final List<DocumentFile> filesToImport = new ArrayList<>();
+
+    public ImportViewModel(@NonNull Application application) {
+        super(application);
+        resultReceiver = new ImportServiceResultReceiver(new Handler(), this);
+        summary = new Summary();
+    }
+
+    public LiveData<Summary> getImportData(DocumentFile documentFile) {
+        if (importData == null) {
+            importData = new MutableLiveData<>();
+            loadData(documentFile);
+        }
+        return importData;
+    }
+
+    public void cancel() {
+        cancel = true;
+    }
+
+    private void loadData(DocumentFile documentFile) {
+        List<DocumentFile> fileList = FileUtils.getFiles(documentFile);
+        summary.totalCount = fileList.size();
+        filesToImport.addAll(fileList);
+        importNextFile();
+    }
+
+    private void importNextFile() {
+        if (cancel || filesToImport.isEmpty()) {
+            return;
+        }
+        ImportService.enqueue(getApplication(), resultReceiver, filesToImport.get(0).getUri());
+        filesToImport.remove(0);
+    }
+
+    @Override
+    public void onReceiveResult(int resultCode, Bundle resultData) {
+        if (resultData == null) {
+            throw new RuntimeException(TAG + ": onReceiveResult resultData NULL");
+        }
+
+        String fileName = resultData.getString(ImportServiceResultReceiver.RESULT_EXTRA_FILENAME);
+        String message = resultData.getString(ImportServiceResultReceiver.RESULT_EXTRA_MESSAGE);
+
+        switch (resultCode) {
+            case ImportServiceResultReceiver.RESULT_CODE_ERROR:
+                summary.errorCount++;
+                summary.fileErrors.add(getApplication().getString(R.string.import_error_info, fileName, message));
+                break;
+            case ImportServiceResultReceiver.RESULT_CODE_IMPORTED:
+                summary.successCount++;
+                break;
+            case ImportServiceResultReceiver.RESULT_CODE_ALREADY_EXISTS:
+                summary.existsCount++;
+                break;
+            default:
+                throw new RuntimeException(TAG + ": import service result code invalid: " + resultCode);
+        }
+
+        importData.postValue(summary);
+        importNextFile();
+    }
+
+    public static class Summary {
+        private int totalCount;
+        private int successCount;
+        private int existsCount;
+        private int errorCount;
+        private final ArrayList<String> fileErrors = new ArrayList<>();
+
+        public int getTotalCount() {
+            return totalCount;
+        }
+
+        public int getSuccessCount() {
+            return successCount;
+        }
+
+        public int getExistsCount() {
+            return existsCount;
+        }
+
+        public int getErrorCount() {
+            return errorCount;
+        }
+
+        public ArrayList<String> getFileErrors() {
+            return fileErrors;
+        }
+    }
+}
@@ -74,7 +74,13 @@ public class KmzTrackImporter implements TrackImporter {
            return null;
        }

-        trackId = findAndParseKmlFile(inputStream);
+        try {
+            trackId = findAndParseKmlFile(inputStream);
+        } catch (Exception e) {
+            cleanImport(context, importTrackId);
+            throw e;
+        }
+
        if (trackId == null) {
            cleanImport(context, importTrackId);
            return null;
@@ -175,7 +181,7 @@ public class KmzTrackImporter implements TrackImporter {
                String fileName = zipEntry.getName();
                if (KmzTrackExporter.KMZ_KML_FILE.equals(fileName)) {
                    trackId = parseKml(zipInputStream);
-                    if (trackId != null) {
+                    if (trackId == null) {
                        Log.d(TAG, "Unable to parse kml in kmz");
                        return null;
                    }
@@ -184,9 +190,12 @@ public class KmzTrackImporter implements TrackImporter {
                zipInputStream.closeEntry();
            }
            return trackId;
+        } catch (ImportParserException | ImportAlreadyExistsException e) {
+            Log.e(TAG, "Unable to import file", e);
+            throw e;
        } catch (IOException e) {
            Log.e(TAG, "Unable to import file", e);
-            return null;
+            throw new ImportParserException(e);
        }
    }

@@ -242,11 +251,15 @@ public class KmzTrackImporter implements TrackImporter {
     * @param zipInputStream the zip input stream
     * @return the imported track id or -1L
     */
-    private Track.Id parseKml(ZipInputStream zipInputStream) throws IOException {
+    private Track.Id parseKml(ZipInputStream zipInputStream) {
        KmlFileTrackImporter kmlFileTrackImporter = new KmlFileTrackImporter(context);

        try (ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(getKml(zipInputStream))) {
            return kmlFileTrackImporter.importFile(byteArrayInputStream);
+        } catch (ImportParserException | ImportAlreadyExistsException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new ImportParserException(e);
        }
    }

@@ -54,6 +54,7 @@ import de.dennisguse.opentracks.services.tasks.AnnouncementPeriodicTaskFactory;
 import de.dennisguse.opentracks.services.tasks.PeriodicTaskExecutor;
 import de.dennisguse.opentracks.stats.TrackStatistics;
 import de.dennisguse.opentracks.stats.TrackStatisticsUpdater;
+import de.dennisguse.opentracks.util.ExportUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.LocationUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
@@ -186,6 +187,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand

        PreferencesUtils.unregister(this, sharedPreferenceChangeListener);

+
        try {
            voiceExecutor.shutdown();
        } finally {
@@ -428,6 +430,9 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
                updateTrackTotalTime(track);
            }
        }
+
+        ExportUtils.postWorkoutExport(this, track);
+
        endRecording(true);
    }

@@ -684,7 +689,7 @@ public class TrackRecordingService extends Service implements HandlerServer.Hand
    }

    SensorDataSet getSensorDataSet() {
-        if (remoteSensorManager == null || !remoteSensorManager.isEnabled()) {
+        if (remoteSensorManager == null) {
            return null;
        }

@@ -55,6 +55,7 @@ public abstract class BluetoothConnectionManager {
            switch (newState) {
                case BluetoothProfile.STATE_CONNECTING:
                    Log.d(TAG, "Connecting to sensor: " + gatt.getDevice());
+                    break;
                case BluetoothProfile.STATE_CONNECTED:
                    Log.d(TAG, "Connected to sensor: " + gatt.getDevice());

@@ -62,9 +63,11 @@ public abstract class BluetoothConnectionManager {
                    break;
                case BluetoothProfile.STATE_DISCONNECTING:
                    Log.d(TAG, "Disconnecting from sensor: " + gatt.getDevice());
+                    break;

                case BluetoothProfile.STATE_DISCONNECTED:
                    Log.d(TAG, "Disconnected from sensor: " + gatt.getDevice());
+                    break;
            }
        }

@@ -114,8 +117,9 @@ public abstract class BluetoothConnectionManager {

        Log.d(TAG, "Connecting to: " + device);

-        bluetoothGatt = device.connectGatt(context, true, this.connectCallback);
-
+        bluetoothGatt = device.connectGatt(context, true, connectCallback);
+        SensorData sensorData = createEmptySensorData(bluetoothGatt.getDevice().getAddress());
+        observer.onChanged(sensorData);
    }

    synchronized void disconnect() {
@@ -124,6 +128,8 @@ public abstract class BluetoothConnectionManager {
            return;
        }
        bluetoothGatt.close();
+        observer.onDisconnecting(createEmptySensorData(bluetoothGatt.getDevice().getAddress()));
+
        bluetoothGatt = null;
    }

@@ -135,10 +141,12 @@ public abstract class BluetoothConnectionManager {
        return address.equals(bluetoothGatt.getDevice().getAddress());
    }

+    protected abstract SensorData createEmptySensorData(String address);
+
    /**
     * @return null if data could not be parsed.
     */
-    protected abstract de.dennisguse.opentracks.content.sensor.SensorData parsePayload(String sensorName, String address, BluetoothGattCharacteristic characteristic);
+    protected abstract SensorData parsePayload(String sensorName, String address, BluetoothGattCharacteristic characteristic);

    public static class HeartRate extends BluetoothConnectionManager {

@@ -146,6 +154,11 @@ public abstract class BluetoothConnectionManager {
            super(BluetoothUtils.HEART_RATE_SERVICE_UUID, BluetoothUtils.HEART_RATE_MEASUREMENT_CHAR_UUID, observer);
        }

+        @Override
+        protected SensorData createEmptySensorData(String address) {
+            return new SensorDataHeartRate(address);
+        }
+
        @Override
        protected SensorDataHeartRate parsePayload(String sensorName, String address, BluetoothGattCharacteristic characteristic) {
            Integer heartRate = BluetoothUtils.parseHeartRate(characteristic);
@@ -160,6 +173,11 @@ public abstract class BluetoothConnectionManager {
            super(BluetoothUtils.CYCLING_SPEED_CADENCE_SERVICE_UUID, BluetoothUtils.CYCLING_SPPED_CADENCE_MEASUREMENT_CHAR_UUID, observer);
        }

+        @Override
+        protected SensorData createEmptySensorData(String address) {
+            return new SensorDataCycling.Cadence(address);
+        }
+
        @Override
        protected SensorDataCycling.Cadence parsePayload(String sensorName, String address, BluetoothGattCharacteristic characteristic) {
            SensorDataCycling.CadenceAndSpeed cadenceAndSpeed = BluetoothUtils.parseCyclingCrankAndWheel(address, sensorName, characteristic);
@@ -186,6 +204,11 @@ public abstract class BluetoothConnectionManager {
            super(BluetoothUtils.CYCLING_SPEED_CADENCE_SERVICE_UUID, BluetoothUtils.CYCLING_SPPED_CADENCE_MEASUREMENT_CHAR_UUID, observer);
        }

+        @Override
+        protected SensorData createEmptySensorData(String address) {
+            return new SensorDataCycling.Speed(address);
+        }
+
        @Override
        protected SensorDataCycling.Speed parsePayload(String sensorName, String address, BluetoothGattCharacteristic characteristic) {
            SensorDataCycling.CadenceAndSpeed cadenceAndSpeed = BluetoothUtils.parseCyclingCrankAndWheel(address, sensorName, characteristic);
@@ -200,5 +223,6 @@ public abstract class BluetoothConnectionManager {

        void onChanged(SensorData sensorData);

+        void onDisconnecting(SensorData sensorData);
    }
 }
@@ -121,6 +121,7 @@ public class BluetoothRemoteSensorManager implements BluetoothConnectionManager.

        if (PreferencesUtils.isBluetoothSensorAddressNone(context, address)) {
            Log.w(TAG, "No Bluetooth address.");
+            connectionManager.disconnect();
            return;
        }

@@ -168,4 +169,9 @@ public class BluetoothRemoteSensorManager implements BluetoothConnectionManager.

        sensorDataSet.set(sensorData);
    }
+
+    @Override
+    public void onDisconnecting(SensorData sensorData) {
+        sensorDataSet.remove(sensorData);
+    }
 }
@@ -56,6 +56,7 @@ public class ActivityTypePreference extends DialogPreference {

    @Override
    public int getDialogLayoutResource() {
+        // TODO PreferenceActivityTypeBinding
        return R.layout.preference_activity_type;
    }

@@ -7,6 +7,7 @@ import android.widget.Toast;

 import androidx.appcompat.app.AppCompatActivity;
 import androidx.appcompat.widget.Toolbar;
+import androidx.documentfile.provider.DocumentFile;
 import androidx.fragment.app.DialogFragment;
 import androidx.preference.EditTextPreference;
 import androidx.preference.ListPreference;
@@ -88,6 +89,13 @@ public class SettingsActivity extends AppCompatActivity implements ChooseActivit

            setExportTrackFileFormatOptions();
            setWheelCircumferenceInputFilter();
+
+            Preference instantExportDirectoryPreference = findPreference(getString(R.string.settings_default_export_directory_key));
+            instantExportDirectoryPreference.setSummaryProvider(preference -> {
+                DocumentFile directory = PreferencesUtils.getDefaultExportDirectoryUri(getContext());
+                //Use same value for not set as Androidx ListPreference and EditTextPreference
+                return directory != null ? directory.getName() : getString(R.string.not_set);
+            });
        }

        @Override
@@ -97,6 +105,13 @@ public class SettingsActivity extends AppCompatActivity implements ChooseActivit
            updateUnits();
            updateReset();
            updateBluetooth();
+
+            updatePostWorkoutExport();
+        }
+
+        private void updatePostWorkoutExport() {
+            Preference instantExportEnabledPreference = findPreference(getString(R.string.post_workout_export_enabled_key));
+            instantExportEnabledPreference.setEnabled(PreferencesUtils.isDefaultExportDirectoryUri(getContext()));
        }

        @Override
@@ -206,4 +221,5 @@ public class SettingsActivity extends AppCompatActivity implements ChooseActivit
            });
        }
    }
+
 }
@@ -17,7 +17,6 @@
 package de.dennisguse.opentracks.util;

 import android.app.Dialog;
-import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.DialogInterface;

@@ -53,36 +52,4 @@ public class DialogUtils {
                .setTitle(titleId).create();
    }

-    /**
-     * Creates a horizontal progress dialog.
-     *
-     * @param context          the context
-     * @param messageId        the progress message id
-     * @param onCancelListener the cancel listener
-     * @param formatArgs       the format arguments for the messageId
-     */
-    public static ProgressDialog createHorizontalProgressDialog(Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
-        return createProgressDialog(context, messageId, onCancelListener, formatArgs);
-    }
-
-    /**
-     * Creates a progress dialog.
-     *
-     * @param context          the context
-     * @param messageId        the progress message id
-     * @param onCancelListener the cancel listener
-     * @param formatArgs       the format arguments for the message id
-     */
-    private static ProgressDialog createProgressDialog(final Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
-        final ProgressDialog progressDialog = new ProgressDialog(context, R.style.ThemeCustomNotTransparentDialog);
-        progressDialog.setCancelable(true);
-        progressDialog.setCanceledOnTouchOutside(false);
-        progressDialog.setIcon(R.drawable.ic_dialog_info_24dp);
-        progressDialog.setIndeterminate(true);
-        progressDialog.setMessage(context.getString(messageId, formatArgs));
-        progressDialog.setOnCancelListener(onCancelListener);
-        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
-        progressDialog.setTitle(R.string.generic_progress_title);
-        return progressDialog;
-    }
 }
@@ -0,0 +1,120 @@
+package de.dennisguse.opentracks.util;
+
+import android.content.ContentResolver;
+import android.content.Context;
+import android.database.Cursor;
+import android.net.Uri;
+import android.provider.DocumentsContract;
+import android.util.Log;
+
+import androidx.documentfile.provider.DocumentFile;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.util.ArrayList;
+import java.util.List;
+
+import de.dennisguse.opentracks.content.data.Track;
+import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
+
+public class ExportUtils {
+
+    private static final String TAG = ExportUtils.class.getSimpleName();
+
+    public static void postWorkoutExport(Context context, Track track) {
+        if (PreferencesUtils.shouldInstantExportAfterWorkout(context)) {
+            TrackFileFormat trackFileFormat = PreferencesUtils.getExportTrackFileFormat(context);
+            DocumentFile directory = PreferencesUtils.getDefaultExportDirectoryUri(context);
+
+            exportTrack(context, trackFileFormat, directory, track);
+        }
+    }
+
+    public static boolean exportTrack(Context context, TrackFileFormat trackFileFormat, DocumentFile directory, Track track) {
+        TrackExporter trackExporter = trackFileFormat.newTrackExporter(context);
+
+        Uri exportDocumentFileUri = getExportDocumentFileUri(context, track.getId(), trackFileFormat, directory);
+
+        try (OutputStream outputStream = context.getContentResolver().openOutputStream(exportDocumentFileUri)) {
+            if (trackExporter.writeTrack(track, outputStream)) {
+                return true;
+            } else {
+                if (!DocumentFile.fromSingleUri(context, exportDocumentFileUri).delete()) {
+                    Log.e(TAG, "Unable to delete exportDocumentFile");
+                }
+                Log.e(TAG, "Unable to export track");
+                return false;
+            }
+        } catch (FileNotFoundException e) {
+            Log.e(TAG, "Unable to open exportDocumentFile " + exportDocumentFileUri, e);
+            return false;
+        } catch (IOException e) {
+            Log.e(TAG, "Unable to close exportDocumentFile output stream", e);
+            return false;
+        }
+    }
+
+    public static boolean isExportFileExists(Track.Id trackId, String trackFileFormatExtension, List<String> filesName) {
+        return filesName.contains(getExportFileNameByTrackId(trackId, trackFileFormatExtension));
+    }
+
+    public static List<String> getAllFiles(Context context, Uri directoryUri) {
+        List<String> fileNames = new ArrayList<>();
+        final ContentResolver resolver = context.getContentResolver();
+        final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(directoryUri, DocumentsContract.getDocumentId(directoryUri));
+
+        try {
+            Cursor c = resolver.query(
+                    childrenUri,
+                    new String[] { DocumentsContract.Document.COLUMN_DISPLAY_NAME },
+                    null,null, null
+            );
+            while (c.moveToNext()) {
+                fileNames.add(c.getString(0));
+            }
+        } catch (Exception e) {
+            Log.w(TAG, "Failed query: " + e);
+        }
+
+        return fileNames;
+    }
+
+    private static Uri getExportDocumentFileUri(Context context, Track.Id trackId, TrackFileFormat trackFileFormat, DocumentFile directory) {
+        String exportFileName = getExportFileNameByTrackId(trackId, trackFileFormat.getExtension());
+        Uri exportDocumentFileUri = findFile(context, directory.getUri(), exportFileName);
+        if (exportDocumentFileUri == null) {
+            exportDocumentFileUri = directory.createFile(trackFileFormat.getMimeType(), exportFileName).getUri();
+        }
+        return exportDocumentFileUri;
+    }
+
+    private static String getExportFileNameByTrackId(Track.Id trackId, String trackFileFormatExtension) {
+        return trackId.getId() + "." + trackFileFormatExtension;
+    }
+
+    private static Uri findFile(Context context, Uri directoryUri, String exportFileName) {
+        final ContentResolver resolver = context.getContentResolver();
+        final Uri childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(directoryUri, DocumentsContract.getDocumentId(directoryUri));
+
+        try {
+            Cursor c = resolver.query(
+                    childrenUri,
+                    new String[] { DocumentsContract.Document.COLUMN_DOCUMENT_ID, DocumentsContract.Document.COLUMN_DISPLAY_NAME },
+                    null,null, null
+            );
+            while (c.moveToNext()) {
+                final String documentId = c.getString(0);
+                final String documentName = c.getString(1);
+                if (documentName.equals(exportFileName)) {
+                    return DocumentsContract.buildDocumentUriUsingTree(directoryUri, documentId);
+                }
+            }
+        } catch (Exception e) {
+            Log.w(TAG, "Find file error: failed query: " + e);
+        }
+
+        return null;
+    }
+}
@@ -16,7 +16,7 @@ public class HackUtils {
     */
    public static void invalidatePreference(@NonNull Preference preference) {
        boolean isEnabled = preference.isEnabled();
-        preference.setEnabled(!isEnabled);
-        preference.setEnabled(isEnabled);
+        preference.setVisible(!isEnabled);
+        preference.setVisible(isEnabled);
    }
 }
@@ -173,4 +173,11 @@ public class IntentUtils {
                .putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
        return new Pair<>(intent, photoUri);
    }
+
+    public static void persistDirectoryAccessPermission(Context context, Intent resultData, Uri directoryUri) {
+        final int takeFlags = resultData.getFlags()
+                & (Intent.FLAG_GRANT_READ_URI_PERMISSION
+                | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+        context.getContentResolver().takePersistableUriPermission(directoryUri, takeFlags);
+    }
 }
@@ -19,8 +19,11 @@ package de.dennisguse.opentracks.util;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
+import android.net.Uri;
+import android.util.Log;

 import androidx.annotation.VisibleForTesting;
+import androidx.documentfile.provider.DocumentFile;
 import androidx.preference.PreferenceManager;

 import de.dennisguse.opentracks.R;
@@ -34,6 +37,8 @@ import de.dennisguse.opentracks.io.file.TrackFileFormat;
 */
 public class PreferencesUtils {

+    private final static String TAG = PreferencesUtils.class.getSimpleName();
+
    private PreferencesUtils() {
    }

@@ -240,29 +245,14 @@ public class PreferencesUtils {
        return getBluetoothSensorAddressNone(context).equals(currentValue);
    }

-
-    public static boolean isBluetoothHeartRateSensorAddressNone(Context context) {
-        return isBluetoothSensorAddressNone(context, getBluetoothHeartRateSensorAddress(context));
-    }
-
    public static String getBluetoothHeartRateSensorAddress(Context context) {
        return getString(context, R.string.settings_sensor_bluetooth_heart_rate_key, getBluetoothSensorAddressNone(context));
    }

-
-    public static boolean isBluetoothCyclingCadenceSensorAddressNone(Context context) {
-        return isBluetoothSensorAddressNone(context, getBluetoothCyclingCadenceSensorAddress(context));
-    }
-
    public static String getBluetoothCyclingCadenceSensorAddress(Context context) {
        return getString(context, R.string.settings_sensor_bluetooth_cycling_cadence_key, getBluetoothSensorAddressNone(context));
    }

-
-    public static boolean isBluetoothCyclingSpeedSensorAddressNone(Context context) {
-        return isBluetoothSensorAddressNone(context, getBluetoothCyclingSpeedSensorAddress(context));
-    }
-
    public static String getBluetoothCyclingSpeedSensorAddress(Context context) {
        return getString(context, R.string.settings_sensor_bluetooth_cycling_speed_key, getBluetoothSensorAddressNone(context));
    }
@@ -337,6 +327,11 @@ public class PreferencesUtils {
        return getInt(context, R.string.recording_gps_accuracy_key, RECORDING_GPS_ACCURACY);
    }

+    public static boolean shouldInstantExportAfterWorkout(Context context) {
+        final boolean INSTANT_POST_WORKOUT_EXPORT_DEFAULT = context.getResources().getBoolean(R.bool.post_workout_export_enabled_default);
+        return getBoolean(context, R.string.post_workout_export_enabled_key, INSTANT_POST_WORKOUT_EXPORT_DEFAULT);
+    }
+
    public static TrackFileFormat getExportTrackFileFormat(Context context) {
        final String TRACKFILEFORMAT_NAME_DEFAULT = getString(context, R.string.export_trackfileformat_default, null);
        String trackFileFormatName = getString(context, R.string.export_trackfileformat_key, TRACKFILEFORMAT_NAME_DEFAULT);
@@ -383,4 +378,26 @@ public class PreferencesUtils {
        }
        PreferenceManager.setDefaultValues(context, R.xml.settings, readAgain);
    }
+
+    public static DocumentFile getDefaultExportDirectoryUri(Context context) {
+        String singleExportDirectorySettingsKey = getString(context, R.string.settings_default_export_directory_key, null);
+        if (singleExportDirectorySettingsKey == null) {
+            return null;
+        }
+        try {
+            return DocumentFile.fromTreeUri(context, Uri.parse(singleExportDirectorySettingsKey));
+        } catch (Exception e) {
+            Log.w(TAG, "Could not decode default export directory: " + e.getMessage());
+        }
+        return null;
+    }
+
+    public static void setDefaultExportDirectoryUri(Context context, Uri directoryUri) {
+        String value = directoryUri != null ? directoryUri.toString() : null;
+        setString(context, R.string.settings_default_export_directory_key, value);
+    }
+
+    public static boolean isDefaultExportDirectoryUri(Context context) {
+        return getDefaultExportDirectoryUri(context) != null;
+    }
 }
@@ -154,8 +154,8 @@ public class TrackIconUtils {
     * @param context      the context
     * @param activityType the activity type
     */
-    public static @NonNull
-    String getIconValue(Context context, String activityType) {
+    @NonNull
+    public static String getIconValue(Context context, String activityType) {
        if (activityType == null || activityType.equals("")) {
            return UNKNOWN;
        }
@@ -24,6 +24,7 @@ public class IntervalStatistics {
        }

        Interval interval = new Interval();
+        interval.gain_m += trackPointList.get(0).hasElevationGain() ? trackPointList.get(0).getElevationGain() : 0;
        for (int i = 1; i < trackPointList.size(); i++) {
            TrackPoint prevTrackPoint = trackPointList.get(i - 1);
            TrackPoint trackPoint = trackPointList.get(i);
@@ -31,6 +32,7 @@ public class IntervalStatistics {
            if (LocationUtils.isValidLocation(trackPoint.getLocation()) && LocationUtils.isValidLocation(prevTrackPoint.getLocation())) {
                interval.distance_m += prevTrackPoint.distanceTo(trackPoint);
                interval.time_ms += trackPoint.getTime() - prevTrackPoint.getTime();
+                interval.gain_m += trackPoint.hasElevationGain() ? trackPoint.getElevationGain() : 0;

                if (interval.distance_m >= distanceInterval_m) {
                    float adjustFactor = distanceInterval_m / interval.distance_m;
@@ -80,17 +82,20 @@ public class IntervalStatistics {
    public static class Interval {
        private float distance_m = 0f;
        private float time_ms = 0f;
+        private float gain_m = 0f;

        public Interval() {}

        public Interval(float distance_m, float time_ms) {
            this.distance_m = distance_m;
            this.time_ms = time_ms;
+            this.gain_m = 0f;
        }

        public Interval(Interval i) {
            distance_m = i.distance_m;
            time_ms = i.time_ms;
+            gain_m = i.gain_m;
        }

        public float getDistance_m() {
@@ -111,5 +116,9 @@ public class IntervalStatistics {
            }
            return distance_m / (float) (time_ms * UnitConversions.MS_TO_S);
        }
+
+        public float getGain_m() {
+            return gain_m;
+        }
    }
 }
@@ -1,56 +1,45 @@
 package de.dennisguse.opentracks.viewmodels;

-import android.app.Application;
-import android.content.Context;
-
-import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
-import androidx.lifecycle.AndroidViewModel;
-import androidx.lifecycle.LiveData;
-import androidx.lifecycle.MutableLiveData;

+import java.util.ArrayList;
 import java.util.List;

-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.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.UnitConversions;

 /**
- * This view model is used to load intervals for a track.
+ * This model is used to load intervals for a track.
 * It uses a default interval but it can be set from outside to manage the interval length.
 */
-public class IntervalStatisticsModel extends AndroidViewModel {
+public class IntervalStatisticsModel {

-    private MutableLiveData<IntervalStatistics> intervalStats = new MutableLiveData<>();
+    private IntervalStatistics intervalStats;
+    private final List<TrackPoint> trackPoints = new ArrayList<>();

-    public IntervalStatisticsModel(@NonNull Application application) {
-        super(application);
+    public IntervalStatistics getIntervalStats(boolean metricUnits, @Nullable IntervalOption interval) {
+        synchronized (trackPoints) {
+            if (interval == null) {
+                interval = IntervalOption.OPTION_1;
+            }
+
+            intervalStats = new IntervalStatistics();
+            float distanceInterval = metricUnits ? (float) (interval.getValue() * UnitConversions.KM_TO_M) : (float) (interval.getValue() * UnitConversions.MI_TO_M);
+            intervalStats.build(trackPoints, distanceInterval);
+            return intervalStats;
+        }
    }

-    public LiveData<IntervalStatistics> getIntervalStats(@Nullable Track.Id trackId, @Nullable IntervalOption interval) {
-        if (interval == null) {
-            interval = IntervalOption.OPTION_1;
+    public void add(TrackPoint trackPoint) {
+        synchronized (trackPoints) {
+            trackPoints.add(trackPoint);
        }
-        if (trackId != null) {
-            loadIntervalStats(trackId, interval);
-        }
-        return intervalStats;
    }

-    private void loadIntervalStats(final Track.Id trackId, IntervalOption interval) {
-        new Thread(() -> {
-            Context context = getApplication().getApplicationContext();
-            ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
-            List<TrackPoint> trackPointList = contentProviderUtils.getTrackPoints(trackId);
-
-            IntervalStatistics intervalStatistics = new IntervalStatistics();
-            float distanceInterval = PreferencesUtils.isMetricUnits(context) ? (float) (interval.getValue() * UnitConversions.KM_TO_M) : (float) (interval.getValue() * UnitConversions.MI_TO_M);
-            intervalStatistics.build(trackPointList, distanceInterval);
-
-            intervalStats.postValue(intervalStatistics);
-        }).start();
+    public void clear() {
+        synchronized (trackPoints) {
+            trackPoints.clear();
+        }
    }

    /**
@@ -66,7 +55,7 @@ public class IntervalStatisticsModel extends AndroidViewModel {
        OPTION_20(20),
        OPTION_50(50);

-        private int value;
+        private final int value;

        IntervalOption(int value) {
            this.value = value;
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
Dennis Guse	d16cbe04a5	Release: v3.12.0	2020-11-03 20:11:21 +01:00
Peter Storch	90a8fc898a	fix #491 crash export on android 11	2020-11-03 19:57:19 +01:00
Dennis Guse	8d141b1324	TrackListActivity now loads marker count via join rather than a 2nd select. Fixes #328.	2020-11-01 21:53:11 +01:00
Peter Storch	43e0f33776	optimize multiple track deletion After #480 got implemented, we can now delete multiple tracks in one go and only cause DB vacuum once.	2020-11-01 21:11:58 +01:00
Román Martínez	e4270b983a	ExportActivity bugfix: setContentView was missing.	2020-11-01 13:21:53 +01:00
Dennis Guse	0209a90e01	Code cleanup.	2020-11-01 08:38:47 +01:00
Dennis Guse	0f92a37146	Use ViewBinding for activities.	2020-11-01 08:20:26 +01:00
Dennis Guse	9cebb1013c	Implement ViewBindings for Fragments.	2020-10-31 22:21:49 +01:00
Dennis Guse	6ac0db7238	Move handling of sensor removal (from settings) in BluetoothConnectionManager.BluetoothConnectionManager.	2020-10-31 22:21:49 +01:00
Dennis Guse	3c1ab01df6	SensorData uses null internally instead of NaN.	2020-10-31 22:21:49 +01:00
Dennis Guse	b6850eb46f	BluetoothSensorManager: on initiate connect to sensor, report address to be shown on UI. Fixes #64.	2020-10-31 22:21:49 +01:00
Dennis Guse	08b9cb31fa	StatisticsRecordingFragment does not need to check GPS accuracy.	2020-10-31 21:38:57 +01:00
Dennis Guse	9541a92657	Small cleanups and improvements code.	2020-10-31 20:39:37 +01:00
Román Martínez	acc2627bde	Activity with progress and summary for import all option. Fixes #471 . ErrorListDialog shared by ExportActivity and ImportActivity.	2020-10-31 20:39:37 +01:00
Dennis Guse	48c3695b5d	Database enforces foreign key constraints incl. cascading deletes. (#480 ) * Database enforces foreign key constraints incl. cascading deletes. Fixes #317.	2020-10-30 21:26:13 +01:00
Dennis Guse	2b280f050c	SharedContentProvider now uses parent ContentProvider directly instead of ContentProviderUtils.	2020-10-30 21:25:41 +01:00
dependabot[bot]	68f34d9682	Bump constraint-layout from 2.0.3 to 2.0.4 Bumps constraint-layout from 2.0.3 to 2.0.4. Signed-off-by: dependabot[bot] <support@github.com>	2020-10-30 09:07:44 +01:00
Dennis Guse	f56820e132	Documentation: added TrackPoint descriptions regarding track segments.	2020-10-29 19:10:39 +01:00
dependabot[bot]	0f5d72f098	Bump constraint-layout from 2.0.2 to 2.0.3 Bumps constraint-layout from 2.0.2 to 2.0.3. Signed-off-by: dependabot[bot] <support@github.com>	2020-10-28 23:08:14 +01:00
dependabot[bot]	accbc5a8ac	Bump mockito-android from 3.5.15 to 3.6.0 Bumps [mockito-android](https://github.com/mockito/mockito) from 3.5.15 to 3.6.0. - [Release notes](https://github.com/mockito/mockito/releases) - [Commits](https://github.com/mockito/mockito/compare/v3.5.15...v3.6.0) Signed-off-by: dependabot[bot] <support@github.com>	2020-10-27 08:12:20 +01:00
Dennis Guse	0bc9f6a042	Update README_TESTED_SENSORS.md Fixes #468.	2020-10-26 18:24:42 +01:00
Peter Storch	bbb91fedc5	fix #470 Unable to parse kml in kmz	2020-10-22 19:22:46 +02:00
Peter Storch	433ab01ece	Track.Id.toString returns string representation of id	2020-10-22 19:17:53 +02:00
Peter Storch	88e1a95da7	fix NPE introduced in #466	2020-10-22 19:08:52 +02:00
Román Martínez	d4483819eb	ImportActivity intent filters. (#466 ) * ImportActivity intent filters. * add intent_filter to work with Locus and OsmAnd * extent intent filters Co-authored-by: Peter Storch <peter.storch@gmail.com>	2020-10-21 22:52:39 +02:00
Román	917b8f4056	Edit texts: select all on focus and capitalize by words/sentences. Fixes #461 .	2020-10-20 21:31:43 +02:00
Román	70c1379778	Export All: ask to the user when conflicts (track already exported in the selected directory) and show a summary. Fixes #451 .	2020-10-20 12:07:58 +02:00
dependabot[bot]	5a60f40308	Bump mockito-android from 3.5.13 to 3.5.15 Bumps [mockito-android](https://github.com/mockito/mockito) from 3.5.13 to 3.5.15. - [Release notes](https://github.com/mockito/mockito/releases) - [Commits](https://github.com/mockito/mockito/compare/v3.5.13...v3.5.15) Signed-off-by: dependabot[bot] <support@github.com>	2020-10-20 08:23:36 +02:00
Peter Storch	df9589697a	idea config files with android studio upgrade	2020-10-19 22:42:53 +02:00
Dennis Guse	27443cc716	Updated translations.	2020-10-17 12:45:48 +02:00
Dennis Guse	654be751a7	Theming: day/night mode is defaults to system.	2020-10-16 20:08:12 +02:00
Dennis Guse	3a8f3e46c7	Refactor post-workout export.	2020-10-16 12:23:39 +02:00
thrillfall	b270c45691	- add default export directory - add instant post workout track export	2020-10-16 12:23:39 +02:00
dependabot[bot]	257d8c1276	Bump gradle from 4.0.2 to 4.1.0 Bumps gradle from 4.0.2 to 4.1.0. Signed-off-by: dependabot[bot] <support@github.com>	2020-10-13 21:41:15 +02:00
Dennis Guse	8521b98f4b	Bitcoin addresses are lower case (Bech32).	2020-10-13 21:24:59 +02:00
Dennis Guse	eaf655f6e7	Upgrade gradle wrapper to 6.5	2020-10-13 18:15:47 +02:00
Dennis Guse	24c7f3fd7a	Add option to donate via Bitcoin.	2020-10-13 18:07:28 +02:00
Román	a4bab656e4	New screenshots.	2020-10-11 13:57:39 +02:00
Román	679c1d7e3e	Intervals: TrackDataHub instead of ContentProvider. Fixes #453 .	2020-10-11 12:12:44 +02:00
Román	0036934fb3	Intervals: added elevation gain and only shows speed or pace, depending on settings.	2020-10-11 12:12:44 +02:00
Román	c508747203	Bugfix: import gpx file added heart rate like a speed because a break missing.	2020-10-08 12:39:31 +02:00
dependabot[bot]	0f4c0079d7	Bump gradle from 4.0.1 to 4.0.2 Bumps gradle from 4.0.1 to 4.0.2. Signed-off-by: dependabot[bot] <support@github.com>	2020-10-07 12:55:35 +02:00
dependabot[bot]	9e6bb1c511	Bump constraint-layout from 2.0.1 to 2.0.2 Bumps constraint-layout from 2.0.1 to 2.0.2. Signed-off-by: dependabot[bot] <support@github.com>	2020-10-07 12:55:17 +02:00