Release: v3.2.2

Re-added actionbar (actually toolbar) to SettingsActivity.
Bugfix: export now really includes sensor data (as double) and import is done as float.
2019-10-21 23:00:13 +02:00 · 2019-10-21 22:54:23 +02:00 · 2019-10-21 22:34:33 +02:00 · 2019-10-21 22:34:28 +02:00 · 2019-10-20 18:39:31 +02:00 · 2019-10-20 17:05:09 +02:00
84 changed files with 1232 additions and 1452 deletions
@@ -8,5 +8,5 @@
 4. Create changelog (`_version code_.txt`)
 5. Create commit with all changes
 6. Push commits
-7. Tag newly create commit with _version name_
-8. Push the tagged to public repository  
+7. Tag newly create commit with _version name_ (e.g., v3.2.1)
+8. Push the tagged commit to public repository  
@@ -83,6 +83,7 @@ android {

 dependencies {
    implementation 'androidx.appcompat:appcompat:1.1.0'
+    implementation 'androidx.preference:preference:1.1.0'

    androidTestImplementation 'androidx.test:core:1.2.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
@@ -0,0 +1,9 @@
+Open Tracks – ein GPS-Tracker, der deine Daten für sich behält.
+Erfasst deine Kilometer, ohne dass es jemand anderes tut.
+
+Funktionen & Features:
+* zeichnet Sport und andere Outdooraktivitäten auf
+* unterstützt das Markieren interessanter Orte, inkl. Foto-Funktion
+* zeichnet deine Herzfrequenz auf (unterstützt Bluetooth-LE-Sensoren)
+* exportiert deine Daten als KML oder GPX
+* funktioniert ganz ohne Internet
@@ -0,0 +1 @@
+Open Tracks – ein GPS-Tracker, der deine Daten für sich behält.
@@ -1,4 +1,4 @@
-v3.2: OpenTracks
+v3.2.0: OpenTracks

 Changes:
 - Removed Widget
@@ -0,0 +1,7 @@
+v3.2.1: OpenTracks
+
+Changes:
+- Settings are now on a single page
+
+Developer:
+- Settings moved to Androidx compat (uses fragments)
@@ -0,0 +1,13 @@
+v3.2.2: OpenTracks
+
+Changes:
+- Removed aggregated stats
+- Migrated to Material Design
+
+Bugfix:
+- Fixed export of sensor data
+- Fixed import of incomplete sensor data
+
+Developer:
+- Replaced actionbar with toolbar
+- Migrated to androidx appcompat (incl. Material Design)
@@ -3,6 +3,6 @@ OpenTracks is a sport tracking application that completely respects your privacy
 Features:
 * Sport tracking: track your sport and outdoor activities
 * Photos and markers: mark interesting locations while tracking
-* Heart rate: supports bluetooth LE sensors
-* Export data: Export tracks either as KML or GPX
+* Heart rate: supports Bluetooth LE sensors
+* Export data: export tracks either as KML or GPX
 * No Internet access: Internet is not used
@@ -0,0 +1 @@
+OpenTracks
@@ -149,8 +149,7 @@ public class StringUtilsTest {
    }

    /**
-     * Tests {@link StringUtils#getTime(String)} with fractional seconds and time
-     * zone.
+     * Tests {@link StringUtils#getTime(String)} with fractional seconds and time zone.
     */
    @Test
    public void testGetTime_fractionalAndTimezone() {
@@ -183,7 +182,7 @@ public class StringUtilsTest {
     * Tests {@link StringUtils#getTimeParts(long)} with a positive number.
     */
    @Test
-    public void testGetTimeParts_postive() {
+    public void testGetTimeParts_positive() {
        int[] parts = StringUtils.getTimeParts(61000);
        Assert.assertEquals(1, parts[0]);
        Assert.assertEquals(1, parts[1]);
@@ -16,8 +16,8 @@ limitations under the License.
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="de.dennisguse.opentracks"
    android:installLocation="auto"
-    android:versionCode="3054"
-    android:versionName="v3.2.0"> <!-- For FDroid. -->
+    android:versionCode="3079"
+    android:versionName="v3.2.2"> <!-- For FDroid. -->
    <!-- Permission to initialize services -->
    <application
        android:name=".Startup"
@@ -30,10 +30,6 @@ limitations under the License.
        <!-- Activities -->
        <activity android:name=".AboutActivity" />

-        <activity
-            android:name=".AggregatedStatsActivity"
-            android:label="@string/menu_aggregated_statistics" />
-
        <activity android:name=".DeleteActivity" />

        <activity
@@ -97,12 +93,8 @@ limitations under the License.
            android:name=".io.file.exporter.ExportActivity"
            android:theme="@style/ThemeCustomTransparent" />

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

-        <activity android:name=".settings.StatsSettingsActivity" />
-
        <!-- Services -->
        <provider
            android:name=".content.ShareContentProvider"
@@ -128,7 +120,6 @@ limitations under the License.
        </receiver>

        <!-- Providers -->
-
        <service
            android:name=".services.TrackRecordingService"
            android:enabled="true"
@@ -19,12 +19,13 @@ package de.dennisguse.opentracks;
 import android.os.Bundle;
 import android.speech.tts.TextToSpeech;

-import androidx.fragment.app.FragmentActivity;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;

 /**
 * @author Jimmy Shih
 */
-public abstract class AbstractActivity extends FragmentActivity {
+public abstract class AbstractActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
@@ -34,6 +35,9 @@ public abstract class AbstractActivity extends FragmentActivity {
        setVolumeControlStream(TextToSpeech.Engine.DEFAULT_STREAM);

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

    /**
@@ -16,24 +16,7 @@

 package de.dennisguse.opentracks;

-import android.app.Activity;
-import android.app.SearchManager;
-import android.content.ComponentName;
-import android.content.Context;
 import android.content.Intent;
-import android.util.Log;
-import android.util.SparseBooleanArray;
-import android.view.ActionMode;
-import android.view.Menu;
-import android.view.MenuItem;
-import android.view.View;
-import android.widget.AbsListView;
-import android.widget.ListView;
-import android.widget.SearchView;
-
-import androidx.annotation.NonNull;
-
-import java.util.ArrayList;

 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment.ConfirmDeleteCaller;
@@ -58,115 +41,6 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
    protected static final int GPS_REQUEST_CODE = 6;
    private static final int DELETE_REQUEST_CODE = 3;

-    public static void configureListViewContextualMenu(final ListView listView, final ContextualActionModeCallback contextualActionModeCallback) {
-        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
-        listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
-
-            @Override
-            public boolean onCreateActionMode(ActionMode mode, Menu menu) {
-                mode.getMenuInflater().inflate(R.menu.list_context_menu, menu);
-                return true;
-            }
-
-            @Override
-            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
-                contextualActionModeCallback.onPrepare(menu, getCheckedPositions(listView), listView.getCheckedItemIds(), true);
-                return true;
-            }
-
-            @Override
-            public void onDestroyActionMode(ActionMode mode) {
-                // Do nothing
-            }
-
-            @Override
-            public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
-                mode.invalidate();
-            }
-
-            @Override
-            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
-                if (contextualActionModeCallback.onClick(item.getItemId(), getCheckedPositions(listView), listView.getCheckedItemIds())) {
-                    mode.finish();
-                }
-                return true;
-            }
-
-            /**
-             * Gets the checked positions in a list view.
-             *
-             * @param list the list view
-             */
-            private int[] getCheckedPositions(ListView list) {
-                SparseBooleanArray positions = list.getCheckedItemPositions();
-                ArrayList<Integer> arrayList = new ArrayList<>();
-                for (int i = 0; i < positions.size(); i++) {
-                    int key = positions.keyAt(i);
-                    if (positions.valueAt(i)) {
-                        arrayList.add(key);
-                    }
-                }
-                int[] result = new int[arrayList.size()];
-                for (int i = 0; i < arrayList.size(); i++) {
-                    result[i] = arrayList.get(i);
-                }
-                return result;
-            }
-        });
-    }
-
-    public static void configureSearchWidget(Activity activity, final MenuItem menuItem, final TrackController trackController) {
-        final SearchView searchView = (SearchView) menuItem.getActionView();
-        SearchManager searchManager = (SearchManager) activity.getSystemService(Context.SEARCH_SERVICE);
-        if (searchManager != null) {
-            //NOTE: for some reason activity.getComponentName() did not trigger the SearchListActivity
-            searchView.setSearchableInfo(searchManager.getSearchableInfo(new ComponentName(activity, SearchListActivity.class)));
-        } else {
-            Log.w(TAG, "Could not retrieve SearchManager.");
-        }
-        searchView.setQueryRefinementEnabled(true);
-        searchView.setSubmitButtonEnabled(true);
-        searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
-
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                // Hide and show trackController when searchable widget has focus/no focus
-                if (trackController != null) {
-                    if (hasFocus) {
-                        trackController.hide();
-                    } else {
-                        trackController.show();
-                    }
-                }
-            }
-        });
-
-        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
-            @Override
-            public boolean onQueryTextSubmit(String query) {
-                menuItem.collapseActionView();
-                return false;
-            }
-
-            @Override
-            public boolean onQueryTextChange(String newText) {
-                return false;
-            }
-        });
-        searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
-            @Override
-            public boolean onSuggestionSelect(int position) {
-                return false;
-            }
-
-            @Override
-            public boolean onSuggestionClick(int position) {
-                menuItem.collapseActionView();
-                return false;
-            }
-        });
-    }
-
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == DELETE_REQUEST_CODE) {
@@ -182,8 +56,7 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
     * @param trackIds the track ids
     */
    protected void deleteTracks(long[] trackIds) {
-        ConfirmDeleteDialogFragment.newInstance(trackIds)
-                .show(getSupportFragmentManager(), ConfirmDeleteDialogFragment.CONFIRM_DELETE_DIALOG_TAG);
+        ConfirmDeleteDialogFragment.showDialog(getSupportFragmentManager(), trackIds);
    }

    @Override
@@ -209,10 +82,9 @@ public abstract class AbstractListActivity extends AbstractActivity implements C
    }

    /**
-     * Gets the track recording service connection. For stopping the current
-     * recording if need to delete the current recording track.
+     * Gets the track recording service connection.
+     * For stopping the current recording if need to delete the current recording track.
     */
-    @NonNull
    abstract protected TrackRecordingServiceConnection getTrackRecordingServiceConnection();

    /**
@@ -1,62 +0,0 @@
-/*
- * Copyright 2012 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
-package de.dennisguse.opentracks;
-
-import android.os.Bundle;
-
-import java.util.List;
-
-import de.dennisguse.opentracks.content.ContentProviderUtils;
-import de.dennisguse.opentracks.content.Track;
-import de.dennisguse.opentracks.stats.TripStatistics;
-import de.dennisguse.opentracks.util.StatsUtils;
-
-/**
- * An activity to view aggregated stats from all recorded tracks.
- *
- * @author Fergus Nelson
- */
-public class AggregatedStatsActivity extends AbstractActivity {
-
-    @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        StatsUtils.setTripStatisticsValues(this, getTripStatistics(), null);
-        StatsUtils.setLocationValues(this, null, false);
-    }
-
-    @Override
-    protected int getLayoutResId() {
-        return R.layout.stats;
-    }
-
-    /**
-     * Gets the aggregated trip statistics for all the recorded tracks or null if
-     * there is no track.
-     */
-    private TripStatistics getTripStatistics() {
-        List<Track> tracks = ContentProviderUtils.Factory.get(this).getAllTracks();
-        TripStatistics tripStatistics = null;
-        if (!tracks.isEmpty()) {
-            tripStatistics = new TripStatistics(tracks.iterator().next().getTripStatistics());
-            for (int i = 1; i < tracks.size(); i++) {
-                tripStatistics.merge(tracks.get(i).getTripStatistics());
-            }
-        }
-        return tripStatistics;
-    }
-}
@@ -223,8 +223,8 @@ public class ChartView extends View {
    }

    /**
-     * Sets chart by distance. It is expected that after changing this value, data
-     * will be reloaded.
+     * Sets chart by distance.
+     * It is expected that after changing this value, data will be reloaded.
     *
     * @param value true for by distance, false for by time
     */
@@ -22,14 +22,11 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.database.Cursor;
 import android.os.Bundle;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;

@@ -46,6 +43,7 @@ import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointsColumns;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
@@ -175,7 +173,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
            }
        };
        listView.setAdapter(resourceCursorAdapter);
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);

        LoaderManager.getInstance(this).initLoader(0, null, new LoaderCallbacks<Cursor>() {
            @NonNull
@@ -234,7 +232,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
        insertMarkerMenuItem = menu.findItem(R.id.marker_list_insert_marker);

        searchMenuItem = menu.findItem(R.id.marker_list_search);
-        AbstractListActivity.configureSearchWidget(this, searchMenuItem, null);
+        ActivityUtils.configureSearchWidget(this, searchMenuItem, null);

        return super.onCreateOptionsMenu(menu);
    }
@@ -256,24 +254,6 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
        return super.onOptionsItemSelected(item);
    }

-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new long[]{info.id})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
    /**
     * Handles a context item selection.
     *
@@ -300,8 +280,7 @@ public class MarkerListActivity extends AbstractActivity implements DeleteMarker
                if (markerIds.length > 1 && markerIds.length == listView.getCount()) {
                    markerIds = new long[]{-1L};
                }
-                DeleteMarkerDialogFragment.newInstance(markerIds)
-                        .show(getSupportFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), markerIds);
                return true;
            case R.id.list_context_menu_select_all:
                int size = listView.getCount();
@@ -22,14 +22,11 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
 import android.os.Bundle;
 import android.util.Log;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.KeyEvent;
 import android.view.Menu;
 import android.view.MenuItem;
 import android.view.View;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ArrayAdapter;
 import android.widget.ListView;
@@ -55,10 +52,12 @@ import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment;
 import de.dennisguse.opentracks.fragments.DeleteMarkerDialogFragment.DeleteMarkerCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.stats.TripStatistics;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StringUtils;
+import de.dennisguse.opentracks.util.ToolbarUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;

 /**
@@ -109,28 +108,33 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
    private ContextualActionModeCallback contextualActionModeCallback = new ContextualActionModeCallback() {
        @Override
        public void onPrepare(Menu menu, int[] positions, long[] ids, boolean showSelectAll) {
-            boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+            boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
            boolean isSingleSelection = positions.length == 1;
+
            boolean isSingleSelectionTrack;
            if (isSingleSelection) {
                Map<String, Object> item = arrayAdapter.getItem(positions[0]);
-                Long trackId = (Long) item.get(TRACK_ID_FIELD);
-                Track track = contentProviderUtils.getTrack(trackId);
-
                isSingleSelectionTrack = item.get(MARKER_ID_FIELD) == null;
            } else {
                isSingleSelectionTrack = false;
            }
+
            // Not recording, one item, item is a track
-            menu.findItem(R.id.list_context_menu_share).setVisible(!isRecording && isSingleSelection && isSingleSelectionTrack);
-            //TODO Setup shareIntent.
+            MenuItem shareMenuItem = menu.findItem(R.id.list_context_menu_share);
+            if (isSingleSelectionTrack) {
+                shareMenuItem.setVisible(!isRecording);
+                Map<String, Object> item = arrayAdapter.getItem(positions[0]);
+                Long trackId = (Long) item.get(TRACK_ID_FIELD);
+
+                ToolbarUtils.setupShareActionProvider(SearchListActivity.this, shareMenuItem, new long[]{trackId});
+            }

            // One item, item is a marker
            menu.findItem(R.id.list_context_menu_show_on_map).setVisible(isSingleSelection && !isSingleSelectionTrack);
            // One item, can be a track or a marker
            menu.findItem(R.id.list_context_menu_edit).setVisible(isSingleSelection);
            // One item. If track, no restriction.
-            menu.findItem(R.id.list_context_menu_delete).setVisible(isSingleSelection && (isSingleSelectionTrack));
+            menu.findItem(R.id.list_context_menu_delete).setVisible(isSingleSelection && isSingleSelectionTrack);
            // Disable select all, no action is available for multiple selection
            menu.findItem(R.id.list_context_menu_select_all).setVisible(false);
        }
@@ -222,7 +226,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                startActivity(intent);
            }
        });
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);
        handleIntent(getIntent());
    }

@@ -259,24 +263,6 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
        handleIntent(intent);
    }

-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new int[]{info.position})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_SEARCH) {
@@ -301,10 +287,6 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
        Long markerId = (Long) item.get(MARKER_ID_FIELD);
        Intent intent;
        switch (itemId) {
-            case R.id.list_context_menu_share:
-                //TODO
-                Log.e(TAG, "Not implemented");
-                return true;
            case R.id.list_context_menu_show_on_map:
                IntentUtils.showCoordinateOnMap(this, (double) item.get(MARKER_LATITUDE_FIELD), (double) item.get(MARKER_LONGITUDE_FIELD), item.get(NAME_FIELD) + "");
                return true;
@@ -323,7 +305,7 @@ public class SearchListActivity extends AbstractListActivity implements DeleteMa
                return true;
            case R.id.list_context_menu_delete:
                if (markerId != null) {
-                    DeleteMarkerDialogFragment.newInstance(new long[]{markerId}).show(getSupportFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                    DeleteMarkerDialogFragment.showDialog(getSupportFragmentManager(), new long[]{markerId});
                } else {
                    deleteTracks(new long[]{trackId});
                }
@@ -130,11 +130,11 @@ public class TrackController {
        handlerUpdateTotalTime.removeCallbacks(updateTotalTimeRunnable);
    }

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

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

@@ -31,7 +31,6 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.WindowManager;
-import android.widget.ShareActionProvider;
 import android.widget.TabHost;
 import android.widget.TabHost.TabSpec;
 import android.widget.Toast;
@@ -48,7 +47,6 @@ import de.dennisguse.opentracks.content.Waypoint.WaypointType;
 import de.dennisguse.opentracks.content.WaypointCreationRequest;
 import de.dennisguse.opentracks.fragments.ChartFragment;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
 import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.fragments.FrequencyDialogFragment;
 import de.dennisguse.opentracks.fragments.StatsFragment;
@@ -57,6 +55,7 @@ import de.dennisguse.opentracks.settings.SettingsActivity;
 import de.dennisguse.opentracks.util.FileUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.ToolbarUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.TrackUtils;

@@ -66,7 +65,7 @@ import de.dennisguse.opentracks.util.TrackUtils;
 * @author Leif Hendrik Wilden
 * @author Rodrigo Damazio
 */
-public class TrackDetailActivity extends AbstractListActivity implements ChooseActivityTypeCaller, ConfirmDeleteDialogFragment.ConfirmDeleteCaller {
+public class TrackDetailActivity extends AbstractListActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller, ConfirmDeleteDialogFragment.ConfirmDeleteCaller {

    public static final String EXTRA_TRACK_ID = "track_id";
    public static final String EXTRA_MARKER_ID = "marker_id";
@@ -319,8 +318,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
        insertPhotoMenuItem.setVisible(new Intent(MediaStore.ACTION_IMAGE_CAPTURE).resolveActivity(getPackageManager()) != null);

        shareMenuItem = menu.findItem(R.id.track_detail_share);
-        ShareActionProvider shareActionProvider = (ShareActionProvider) shareMenuItem.getActionProvider();
-        shareActionProvider.setShareIntent(IntentUtils.newShareFileIntent(this, new long[]{trackId}));
+        ToolbarUtils.setupShareActionProviderCompat(this, shareMenuItem, new long[]{trackId});

        voiceFrequencyMenuItem = menu.findItem(R.id.track_detail_voice_frequency);
        splitFrequencyMenuItem = menu.findItem(R.id.track_detail_split_frequency);
@@ -361,12 +359,10 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
                startActivity(intent);
                return true;
            case R.id.track_detail_voice_frequency:
-                FrequencyDialogFragment.newInstance(R.string.voice_frequency_key, PreferencesUtils.VOICE_FREQUENCY_DEFAULT, R.string.menu_voice_frequency)
-                        .show(getSupportFragmentManager(), FrequencyDialogFragment.FREQUENCY_DIALOG_TAG);
+                FrequencyDialogFragment.showDialog(getSupportFragmentManager(), R.string.voice_frequency_key, PreferencesUtils.VOICE_FREQUENCY_DEFAULT, R.string.menu_voice_frequency);
                return true;
            case R.id.track_detail_split_frequency:
-                FrequencyDialogFragment.newInstance(R.string.split_frequency_key, PreferencesUtils.SPLIT_FREQUENCY_DEFAULT, R.string.menu_split_frequency)
-                        .show(getSupportFragmentManager(), FrequencyDialogFragment.FREQUENCY_DIALOG_TAG);
+                FrequencyDialogFragment.showDialog(getSupportFragmentManager(), R.string.split_frequency_key, PreferencesUtils.SPLIT_FREQUENCY_DEFAULT, R.string.menu_split_frequency);
                return true;
            case R.id.track_detail_edit:
                intent = IntentUtils.newIntent(this, TrackEditActivity.class)
@@ -395,6 +391,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
            }
            return;
        }
+
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    }

@@ -487,7 +484,7 @@ public class TrackDetailActivity extends AbstractListActivity implements ChooseA
    }

    public void chooseActivityType(String category) {
-        ChooseActivityTypeDialogFragment.newInstance(category).show(getSupportFragmentManager(), ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+        ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), category);
    }

    @Override
@@ -28,10 +28,11 @@ import android.widget.Button;
 import android.widget.EditText;
 import android.widget.Spinner;

+import androidx.annotation.NonNull;
+
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.TrackUtils;
@@ -41,7 +42,7 @@ import de.dennisguse.opentracks.util.TrackUtils;
 *
 * @author Leif Hendrik Wilden
 */
-public class TrackEditActivity extends AbstractActivity implements ChooseActivityTypeCaller {
+public class TrackEditActivity extends AbstractActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller {

    public static final String EXTRA_TRACK_ID = "track_id";
    public static final String EXTRA_NEW_TRACK = "new_track";
@@ -119,9 +120,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (event.getAction() == MotionEvent.ACTION_UP) {
-                    ChooseActivityTypeDialogFragment.newInstance(activityType.getText().toString()).show(
-                            getSupportFragmentManager(),
-                            ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
                }
                return true;
            }
@@ -130,9 +129,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
-                    ChooseActivityTypeDialogFragment.newInstance(activityType.getText().toString()).show(
-                            getSupportFragmentManager(),
-                            ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
+                    ChooseActivityTypeDialogFragment.showDialog(getSupportFragmentManager(), activityType.getText().toString());
                }
                return true;
            }
@@ -182,7 +179,7 @@ public class TrackEditActivity extends AbstractActivity implements ChooseActivit
    }

    @Override
-    public void onSaveInstanceState(Bundle outState) {
+    public void onSaveInstanceState(@NonNull Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putString(ICON_VALUE_KEY, iconValue);
    }
@@ -28,8 +28,6 @@ import android.location.LocationManager;
 import android.os.Bundle;
 import android.provider.Settings;
 import android.util.Log;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Gravity;
 import android.view.KeyEvent;
 import android.view.Menu;
@@ -37,14 +35,12 @@ import android.view.MenuItem;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.widget.AdapterView;
-import android.widget.AdapterView.AdapterContextMenuInfo;
 import android.widget.AdapterView.OnItemClickListener;
 import android.widget.ListView;
-import android.widget.SearchView;
-import android.widget.ShareActionProvider;
 import android.widget.Toast;

 import androidx.annotation.NonNull;
+import androidx.appcompat.widget.SearchView;
 import androidx.core.app.ActivityCompat;
 import androidx.cursoradapter.widget.ResourceCursorAdapter;
 import androidx.loader.app.LoaderManager;
@@ -60,10 +56,12 @@ import de.dennisguse.opentracks.fragments.ConfirmDeleteDialogFragment;
 import de.dennisguse.opentracks.services.ITrackRecordingService;
 import de.dennisguse.opentracks.services.TrackRecordingServiceConnection;
 import de.dennisguse.opentracks.settings.SettingsActivity;
+import de.dennisguse.opentracks.util.ActivityUtils;
 import de.dennisguse.opentracks.util.IntentUtils;
 import de.dennisguse.opentracks.util.ListItemUtils;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.StringUtils;
+import de.dennisguse.opentracks.util.ToolbarUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;
 import de.dennisguse.opentracks.util.TrackUtils;

@@ -118,8 +116,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
            boolean isSingleSelection = trackIds.length == 1;

            MenuItem shareMenuItem = menu.findItem(R.id.list_context_menu_share);
-            ShareActionProvider shareActionProvider = (ShareActionProvider) shareMenuItem.getActionProvider();
-            shareActionProvider.setShareIntent(trackIds.length == 0 ? null : IntentUtils.newShareFileIntent(TrackListActivity.this, trackIds));
+            ToolbarUtils.setupShareActionProvider(TrackListActivity.this, shareMenuItem, trackIds);

            menu.findItem(R.id.list_context_menu_edit).setVisible(isSingleSelection);
            menu.findItem(R.id.list_context_menu_select_all).setVisible(showSelectAll);
@@ -148,7 +145,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                    PreferencesUtils.getKey(TrackListActivity.this, R.string.recording_track_id_key))) {
                recordingTrackId = PreferencesUtils.getLong(
                        TrackListActivity.this, R.string.recording_track_id_key);
-                if (key != null && recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
+                if (key != null && PreferencesUtils.isRecording(recordingTrackId)) {
                    trackRecordingServiceConnection.startAndBind();
                }
            }
@@ -164,7 +161,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                    public void run() {
                        TrackListActivity.this.invalidateOptionsMenu();
                        LoaderManager.getInstance(TrackListActivity.this).restartLoader(0, null, loaderCallbacks);
-                        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+                        boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
                        trackController.update(isRecording, recordingTrackPaused);
                    }
                });
@@ -175,7 +172,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
    // Menu items
    private MenuItem searchMenuItem;
    private MenuItem startGpsMenuItem;
-    private MenuItem aggregatedStatisticsMenuItem;
    private MenuItem deleteAllMenuItem;

    private final OnClickListener stopListener = new OnClickListener() {
@@ -200,7 +196,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
-                    trackController.update(recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT, recordingTrackPaused);
+                    trackController.update(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused);
                }
            });

@@ -317,7 +313,8 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
            }
        };
        listView.setAdapter(resourceCursorAdapter);
-        AbstractListActivity.configureListViewContextualMenu(listView, contextualActionModeCallback);
+
+        ActivityUtils.configureListViewContextualMenu(listView, contextualActionModeCallback);

        LoaderManager.getInstance(this).initLoader(0, null, loaderCallbacks);
        showStartupDialogs();
@@ -339,8 +336,7 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
        // Update UI
        this.invalidateOptionsMenu();
        LoaderManager.getInstance(this).restartLoader(0, null, loaderCallbacks);
-        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-        trackController.onResume(isRecording, recordingTrackPaused);
+        trackController.onResume(PreferencesUtils.isRecording(recordingTrackId), recordingTrackPaused);
    }

    @Override
@@ -380,10 +376,9 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
        getMenuInflater().inflate(R.menu.track_list, menu);

        searchMenuItem = menu.findItem(R.id.track_list_search);
-        AbstractListActivity.configureSearchWidget(this, searchMenuItem, trackController);
+        ActivityUtils.configureSearchWidget(this, searchMenuItem, trackController);

        startGpsMenuItem = menu.findItem(R.id.track_list_start_gps);
-        aggregatedStatisticsMenuItem = menu.findItem(R.id.track_list_aggregated_statistics);
        deleteAllMenuItem = menu.findItem(R.id.track_list_delete_all);

        return super.onCreateOptionsMenu(menu);
@@ -392,13 +387,12 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
    @Override
    public boolean onPrepareOptionsMenu(Menu menu) {
        boolean isGpsStarted = TrackRecordingServiceConnection.isRecordingServiceRunning(this);
-        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        boolean isRecording = PreferencesUtils.isRecording(recordingTrackId);
        updateMenuItems(isGpsStarted, isRecording);

-        View searchView = searchMenuItem.getActionView();
-        if (searchView instanceof SearchView) {
-            ((SearchView) searchView).setQuery("", false);
-        }
+        SearchView searchView = (SearchView) searchMenuItem.getActionView();
+        searchView.setQuery("", false);
+
        return super.onPrepareOptionsMenu(menu);
    }

@@ -439,10 +433,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                intent = IntentUtils.newIntent(this, MarkerListActivity.class);
                startActivity(intent);
                return true;
-            case R.id.track_list_aggregated_statistics:
-                intent = IntentUtils.newIntent(this, AggregatedStatsActivity.class);
-                startActivity(intent);
-                return true;
            case R.id.track_list_delete_all:
                deleteTracks(new long[]{-1L});
                return true;
@@ -454,24 +444,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
        return super.onOptionsItemSelected(item);
    }

-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        super.onCreateContextMenu(menu, v, menuInfo);
-        getMenuInflater().inflate(R.menu.list_context_menu, menu);
-
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) menuInfo;
-        contextualActionModeCallback.onPrepare(menu, new int[]{info.position}, new long[]{info.id}, false);
-    }
-
-    @Override
-    public boolean onContextItemSelected(MenuItem item) {
-        AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
-        if (handleContextItem(item.getItemId(), new long[]{info.id})) {
-            return true;
-        }
-        return super.onContextItemSelected(item);
-    }
-
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_SEARCH && searchMenuItem != null) {
@@ -531,9 +503,6 @@ public class TrackListActivity extends AbstractListActivity implements ConfirmDe
                startGpsMenuItem.setIcon(isGpsStarted ? R.drawable.ic_gps_fixed_24dp : R.drawable.ic_gps_off_24dp);
            }
        }
-        if (aggregatedStatisticsMenuItem != null) {
-            aggregatedStatisticsMenuItem.setVisible(hasTrack);
-        }
        if (deleteAllMenuItem != null) {
            deleteAllMenuItem.setVisible(hasTrack && !isRecording);
        }
@@ -208,7 +208,7 @@ public class TrackDataHub implements DataSourceListener {
     * Returns true if the selected track is recording.
     */
    public boolean isSelectedTrackRecording() {
-        return selectedTrackId == recordingTrackId && recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        return selectedTrackId == recordingTrackId && PreferencesUtils.isRecording(recordingTrackId);
    }

    /**
@@ -2,7 +2,7 @@ package de.dennisguse.opentracks.content.sensor;

 public final class SensorDataSet {

-    public static final float DATA_UNAVAILABLE = Integer.MAX_VALUE;
+    public static final float DATA_UNAVAILABLE = Float.NaN;

    //TODO It might be necessary to consider: sensor if sensor was connected as well.
    public String sensorName;
@@ -40,7 +40,7 @@ public final class SensorDataSet {
    }

    public boolean hasHeartRate() {
-        return heartRate != DATA_UNAVAILABLE;
+        return !Float.isNaN(heartRate);
    }

    public float getHeartRate() {
@@ -48,7 +48,7 @@ public final class SensorDataSet {
    }

    public boolean hasCadence() {
-        return cadence != DATA_UNAVAILABLE;
+        return !Float.isNaN(cadence);
    }

    public float getCadence() {
@@ -56,7 +56,7 @@ public final class SensorDataSet {
    }

    public boolean hasPower() {
-        return power != DATA_UNAVAILABLE;
+        return !Float.isNaN(power);
    }

    public float getPower() {
@@ -77,7 +77,7 @@ public final class SensorDataSet {
    }

    public boolean hasBatteryLevel() {
-        return batteryLevel != DATA_UNAVAILABLE;
+        return !Float.isNaN(batteryLevel);
    }

    public float getBatteryLevel() {
@@ -352,8 +352,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    }

    /**
-     * Resumes the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Resumes the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
     */
    private synchronized void resumeTrackDataHub() {
        trackDataHub = ((TrackDetailActivity) getActivity()).getTrackDataHub();
@@ -363,8 +363,8 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    }

    /**
-     * Pauses the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Pauses the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
     */
    private synchronized void pauseTrackDataHub() {
        trackDataHub.unregisterTrackDataListener(this);
@@ -372,16 +372,16 @@ public class ChartFragment extends Fragment implements TrackDataListener {
    }

    /**
-     * Returns true if the selected track is recording. Needs to be synchronized
-     * because trackDataHub can be accessed by multiple threads.
+     * Returns true if the selected track is recording.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
     */
    private synchronized boolean isSelectedTrackRecording() {
        return trackDataHub != null && trackDataHub.isSelectedTrackRecording();
    }

    /**
-     * Reloads the trackDataHub. Needs to be synchronized because trackDataHub can
-     * be accessed by multiple threads.
+     * Reloads the trackDataHub.
+     * Needs to be synchronized because trackDataHub can be accessed by multiple threads.
     */
    private synchronized void reloadTrackDataHub() {
        if (trackDataHub != null) {
@@ -389,18 +389,12 @@ public class ChartFragment extends Fragment implements TrackDataListener {
        }
    }

-    /**
-     * To zoom in.
-     */
    private void zoomIn() {
        chartView.zoomIn();
        zoomControls.setIsZoomInEnabled(chartView.canZoomIn());
        zoomControls.setIsZoomOutEnabled(chartView.canZoomOut());
    }

-    /**
-     * To zoom out.
-     */
    private void zoomOut() {
        chartView.zoomOut();
        zoomControls.setIsZoomInEnabled(chartView.canZoomIn());
@@ -438,9 +432,6 @@ public class ChartFragment extends Fragment implements TrackDataListener {
        double elevation = Double.NaN;
        double speed = Double.NaN;
        double pace = Double.NaN;
-        double heartRate = Double.NaN;
-        double cadence = Double.NaN;
-        double power = Double.NaN;

        if (tripStatisticsUpdater != null) {
            tripStatisticsUpdater.addLocation(location, recordingDistanceInterval);
@@ -466,6 +457,10 @@ public class ChartFragment extends Fragment implements TrackDataListener {
            }
            pace = speed == 0 ? 0.0 : 60.0 / speed;
        }
+
+        double heartRate = Double.NaN;
+        double cadence = Double.NaN;
+        double power = Double.NaN;
        if (location instanceof SensorDataSetLocation && ((SensorDataSetLocation) location).getSensorDataSet() != null) {
            SensorDataSet sensorDataSet = ((SensorDataSetLocation) location).getSensorDataSet();
            if (sensorDataSet.hasHeartRate()) {
@@ -479,6 +474,7 @@ public class ChartFragment extends Fragment implements TrackDataListener {
            }
        }

+        //TODO: Is related to ChartView.ELEVATION_SERIES etc.
        if (data != null) {
            data[0] = timeOrDistance;
            data[1] = elevation;
@@ -1,34 +1,18 @@
-/*
- * Copyright 2013 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
-
 package de.dennisguse.opentracks.fragments;

-import android.app.AlertDialog;
+import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
-import android.content.DialogInterface;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.View;
+import android.view.ViewGroup;
 import android.widget.AdapterView;
-import android.widget.AdapterView.OnItemClickListener;
 import android.widget.GridView;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;

 import java.util.ArrayList;
 import java.util.List;
@@ -38,56 +22,13 @@ import de.dennisguse.opentracks.util.TrackIconUtils;

 /**
 * A DialogFragment to choose an activity type.
- *
- * @author apoorvn
 */
-public class ChooseActivityTypeDialogFragment extends DialogFragment {
+public class ChooseActivityTypeDialogFragment extends DialogFragment implements AdapterView.OnItemClickListener {

-    public static final String CHOOSE_ACTIVITY_TYPE_DIALOG_TAG = "chooseActivityType";
-    private static final String KEY_CATEGORY = "category";
-    private ChooseActivityTypeCaller caller;
+    private static final String CHOOSE_ACTIVITY_TYPE_DIALOG_TAG = "chooseActivityType";

-    public static ChooseActivityTypeDialogFragment newInstance(String category) {
-        Bundle bundle = new Bundle();
-        bundle.putString(KEY_CATEGORY, category);
-
-        ChooseActivityTypeDialogFragment fragment = new ChooseActivityTypeDialogFragment();
-        fragment.setArguments(bundle);
-        return fragment;
-    }
-
-    public static Dialog getDialog(final Context context, final String category, final ChooseActivityTypeCaller caller) {
-        View view = LayoutInflater.from(context).inflate(R.layout.choose_activity_type, null);
-        GridView gridView = view.findViewById(R.id.choose_activity_type_grid_view);
-
-        List<Integer> imageIds = new ArrayList<>();
-        for (String iconValue : TrackIconUtils.getAllIconValues()) {
-            imageIds.add(TrackIconUtils.getIconDrawable(iconValue));
-        }
-
-        final ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(imageIds);
-        gridView.setAdapter(imageAdapter);
-
-        final AlertDialog alertDialog = new AlertDialog.Builder(context).setTitle(R.string.track_edit_activity_type_hint).setView(view).create();
-        alertDialog.setOnShowListener(new DialogInterface.OnShowListener() {
-            @Override
-            public void onShow(DialogInterface dialog) {
-                int position = getPosition(context, category);
-                if (position != -1) {
-                    imageAdapter.setSelected(position);
-                    imageAdapter.notifyDataSetChanged();
-                }
-            }
-        });
-
-        gridView.setOnItemClickListener(new OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
-                caller.onChooseActivityTypeDone(TrackIconUtils.getAllIconValues().get(position));
-                alertDialog.dismiss();
-            }
-        });
-        return alertDialog;
+    public static void showDialog(FragmentManager fragmentManager, String preselectedCategory) {
+        new ChooseActivityTypeDialogFragment(preselectedCategory).show(fragmentManager, ChooseActivityTypeDialogFragment.CHOOSE_ACTIVITY_TYPE_DIALOG_TAG);
    }

    private static int getPosition(Context context, String category) {
@@ -99,32 +40,79 @@ public class ChooseActivityTypeDialogFragment extends DialogFragment {
        return TrackIconUtils.getAllIconValues().indexOf(iconValue);
    }

-    @Override
-    public void onAttach(@NonNull Context context) {
-        super.onAttach(context);
-        try {
-            caller = (ChooseActivityTypeCaller) context;
-        } catch (ClassCastException e) {
-            throw new ClassCastException(context + " must implement " + ChooseActivityTypeCaller.class.getSimpleName());
-        }
+    private String preselectedCategory;
+
+    private ChooseActivityTypeCaller chooseActivityTypeCaller;
+
+    private ChooseActivityTypeDialogFragment(String preselectedCategory) {
+        this.preselectedCategory = preselectedCategory;
    }

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        return getDialog(getActivity(), getArguments().getString(KEY_CATEGORY), caller);
+        Dialog dialog = super.onCreateDialog(savedInstanceState);
+        dialog.setTitle(R.string.track_edit_activity_type_hint);
+        return dialog;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = inflater.inflate(R.layout.choose_activity_type, container);
+        GridView gridView = view.findViewById(R.id.choose_activity_type_grid_view);
+
+        List<Integer> imageIds = new ArrayList<>();
+        for (String iconValue : TrackIconUtils.getAllIconValues()) {
+            imageIds.add(TrackIconUtils.getIconDrawable(iconValue));
+        }
+
+        final ChooseActivityTypeImageAdapter imageAdapter = new ChooseActivityTypeImageAdapter(imageIds);
+        gridView.setAdapter(imageAdapter);
+
+        int position = getPosition(getContext(), preselectedCategory);
+        if (position != -1) {
+            imageAdapter.setSelected(position);
+            imageAdapter.notifyDataSetChanged();
+        }
+
+        gridView.setOnItemClickListener(this);
+        return view;
    }

    /**
-     * Interface for caller of this dialog fragment.
-     *
-     * @author apoorvn
+     * TODO: Only used by obsolete Androidx preferences. Remove when onAttach(Context) is called.
+     */
+    @Override
+    public void onAttach(@NonNull Activity activity) {
+        super.onAttach(activity);
+        try {
+            chooseActivityTypeCaller = (ChooseActivityTypeCaller) activity;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(activity + " must implement " + ChooseActivityTypeCaller.class.getSimpleName());
+        }
+    }
+
+    public void onAttach(@NonNull Context context) {
+        super.onAttach(context);
+        try {
+            chooseActivityTypeCaller = (ChooseActivityTypeCaller) context;
+        } catch (ClassCastException e) {
+            throw new ClassCastException(context + " must implement " + ChooseActivityTypeCaller.class.getSimpleName());
+        }
+    }
+
+
+    @Override
+    public void onItemClick(AdapterView<?> adapterView, View view, int position, long id) {
+        chooseActivityTypeCaller.onChooseActivityTypeDone(TrackIconUtils.getAllIconValues().get(position));
+        dismiss();
+    }
+
+    /**
+     * Interface for chooseActivityTypeCaller of this dialog fragment.
     */
    public interface ChooseActivityTypeCaller {

-        /**
-         * Called when choose activity type is done.
-         */
        void onChooseActivityTypeDone(String iconValue);
    }
 }
@@ -23,6 +23,7 @@ import android.os.Bundle;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;

 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.util.DialogUtils;
@@ -34,22 +35,21 @@ import de.dennisguse.opentracks.util.DialogUtils;
 */
 public class ConfirmDeleteDialogFragment extends DialogFragment {

-    public static final String CONFIRM_DELETE_DIALOG_TAG = "confirmDeleteDialog";
-    private static final String KEY_TRACK_IDS = "trackIds";
+    private static final String CONFIRM_DELETE_DIALOG_TAG = "confirmDeleteDialog";
    private ConfirmDeleteCaller caller;
+    private long[] trackIds;
+
+    public ConfirmDeleteDialogFragment(long[] trackIds) {
+        this.trackIds = trackIds;
+    }

    /**
     * Create a new instance.
     *
     * @param trackIds list of track ids to delete. To delete all, set to size 1 with trackIds[0] == -1L
     */
-    public static ConfirmDeleteDialogFragment newInstance(long[] trackIds) {
-        Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_TRACK_IDS, trackIds);
-
-        ConfirmDeleteDialogFragment deleteTrackDialogFragment = new ConfirmDeleteDialogFragment();
-        deleteTrackDialogFragment.setArguments(bundle);
-        return deleteTrackDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, long[] trackIds) {
+        new ConfirmDeleteDialogFragment(trackIds).show(fragmentManager, CONFIRM_DELETE_DIALOG_TAG);
    }

    @Override
@@ -62,11 +62,9 @@ public class ConfirmDeleteDialogFragment extends DialogFragment {
        }
    }

-
    @Override
    @NonNull
    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        final long[] trackIds = getArguments().getLongArray(KEY_TRACK_IDS);
        int titleId;
        int messageId;
        titleId = trackIds.length > 1 ? R.string.generic_delete_selected_confirm_title : R.string.track_delete_one_confirm_title;
@@ -24,6 +24,7 @@ import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;

 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
@@ -37,17 +38,17 @@ import de.dennisguse.opentracks.util.DialogUtils;
 */
 public class DeleteMarkerDialogFragment extends DialogFragment {

-    public static final String DELETE_MARKER_DIALOG_TAG = "deleteMarkerDialog";
-    private static final String KEY_MARKER_IDS = "markerIds";
+    private static final String DELETE_MARKER_DIALOG_TAG = "deleteMarkerDialog";
+    private long[] markerIds;
+
    private DeleteMarkerCaller caller;

-    public static DeleteMarkerDialogFragment newInstance(long[] markerIds) {
-        Bundle bundle = new Bundle();
-        bundle.putLongArray(KEY_MARKER_IDS, markerIds);
+    public DeleteMarkerDialogFragment(long[] markerIds) {
+        this.markerIds = markerIds;
+    }

-        DeleteMarkerDialogFragment deleteMarkerDialogFragment = new DeleteMarkerDialogFragment();
-        deleteMarkerDialogFragment.setArguments(bundle);
-        return deleteMarkerDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, long[] markerIds) {
+        new DeleteMarkerDialogFragment(markerIds).show(fragmentManager, DELETE_MARKER_DIALOG_TAG);
    }

    @Override
@@ -64,7 +65,6 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
    @NonNull
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        final FragmentActivity fragmentActivity = getActivity();
-        final long[] markerIds = getArguments().getLongArray(KEY_MARKER_IDS);
        int titleId;
        int messageId;
        if (markerIds.length == 1 && markerIds[0] == -1L) {
@@ -81,8 +81,7 @@ public class DeleteMarkerDialogFragment extends DialogFragment {
                        new Thread(new Runnable() {
                            @Override
                            public void run() {
-                                ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(
-                                        fragmentActivity);
+                                ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(fragmentActivity);
                                for (long markerId : markerIds) {
                                    contentProviderUtils.deleteWaypoint(fragmentActivity,
                                            markerId, new DescriptionGeneratorImpl(fragmentActivity));
@@ -25,6 +25,7 @@ import android.os.Bundle;

 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
+import androidx.fragment.app.FragmentManager;

 import java.util.Locale;

@@ -39,19 +40,19 @@ import de.dennisguse.opentracks.util.FileUtils;
 */
 public class FileTypeDialogFragment extends DialogFragment {

-    public static final String FILE_TYPE_DIALOG_TAG = "fileType";
-    private static final String KEY_TITLE_ID = "titleId";
-    private static final String KEY_OPTION_ID = "optionId";
+    private static final String FILE_TYPE_DIALOG_TAG = "fileType";
+    private int titleId;
+
    private FileTypeCaller caller;
+    private int optionId;

-    public static FileTypeDialogFragment newInstance(int titleId, int optionId) {
-        Bundle bundle = new Bundle();
-        bundle.putInt(KEY_TITLE_ID, titleId);
-        bundle.putInt(KEY_OPTION_ID, optionId);
+    public FileTypeDialogFragment(int titleId, int optionId) {
+        this.titleId = titleId;
+        this.optionId = optionId;
+    }

-        FileTypeDialogFragment fileTypeDialogFragment = new FileTypeDialogFragment();
-        fileTypeDialogFragment.setArguments(bundle);
-        return fileTypeDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, int titleId, int optionId) {
+        new FileTypeDialogFragment(titleId, optionId).show(fragmentManager, FILE_TYPE_DIALOG_TAG);
    }

    @Override
@@ -67,8 +68,6 @@ public class FileTypeDialogFragment extends DialogFragment {
    @Override
    @NonNull
    public Dialog onCreateDialog(Bundle savedInstanceState) {
-        int optionId = getArguments().getInt(KEY_OPTION_ID);
-        final int titleId = getArguments().getInt(KEY_TITLE_ID);
        final TrackFileFormat[] trackFileFormats = {TrackFileFormat.KMZ_WITH_TRACKDETAIL_AND_SENSORDATA_AND_PICTURES, TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA, TrackFileFormat.GPX};
        String[] choices = new String[trackFileFormats.length];
        for (int i = 0; i < choices.length; i++) {
@@ -96,7 +95,7 @@ public class FileTypeDialogFragment extends DialogFragment {
    }

    @Override
-    public void onCancel(DialogInterface dialog) {
+    public void onCancel(@NonNull DialogInterface dialog) {
        onDismissed();
    }

@@ -24,6 +24,7 @@ import android.os.Bundle;
 import androidx.annotation.NonNull;
 import androidx.fragment.app.DialogFragment;
 import androidx.fragment.app.FragmentActivity;
+import androidx.fragment.app.FragmentManager;

 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.util.PreferencesUtils;
@@ -36,21 +37,19 @@ import de.dennisguse.opentracks.util.StringUtils;
 */
 public class FrequencyDialogFragment extends DialogFragment {

-    public static final String FREQUENCY_DIALOG_TAG = "frequencyDialog";
+    private static final String FREQUENCY_DIALOG_TAG = "frequencyDialog";
+    private int preferenceId;
+    private int defaultValue;
+    private int titleId;

-    private static final String KEY_PREFERENCE_ID = "preferenceId";
-    private static final String KEY_DEFAULT_VALUE = "defaultValue";
-    private static final String KEY_TITLE_ID = "titleId";
+    public FrequencyDialogFragment(int preferenceId, int defaultValue, int titleId) {
+        this.preferenceId = preferenceId;
+        this.defaultValue = defaultValue;
+        this.titleId = titleId;
+    }

-    public static FrequencyDialogFragment newInstance(int preferenceId, int defaultValue, int titleId) {
-        Bundle bundle = new Bundle();
-        bundle.putInt(KEY_PREFERENCE_ID, preferenceId);
-        bundle.putInt(KEY_DEFAULT_VALUE, defaultValue);
-        bundle.putInt(KEY_TITLE_ID, titleId);
-
-        FrequencyDialogFragment frequencyDialogFragment = new FrequencyDialogFragment();
-        frequencyDialogFragment.setArguments(bundle);
-        return frequencyDialogFragment;
+    public static void showDialog(FragmentManager fragmentManager, int preferenceId, int defaultValue, int titleId) {
+        new FrequencyDialogFragment(preferenceId, defaultValue, titleId).show(fragmentManager, FREQUENCY_DIALOG_TAG);
    }

    @Override
@@ -58,9 +57,6 @@ public class FrequencyDialogFragment extends DialogFragment {
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        FragmentActivity fragmentActivity = getActivity();

-        final int preferenceId = getArguments().getInt(KEY_PREFERENCE_ID);
-        int defaultValue = getArguments().getInt(KEY_DEFAULT_VALUE);
-        int titleId = getArguments().getInt(KEY_TITLE_ID);
        int frequencyValue = PreferencesUtils.getInt(fragmentActivity, preferenceId, defaultValue);

        return new AlertDialog.Builder(fragmentActivity).setPositiveButton(
@@ -192,8 +192,7 @@ public class MarkerDetailFragment extends Fragment {
                startActivity(intent);
                return true;
            case R.id.marker_detail_delete:
-                DeleteMarkerDialogFragment.newInstance(new long[]{markerId})
-                        .show(getChildFragmentManager(), DeleteMarkerDialogFragment.DELETE_MARKER_DIALOG_TAG);
+                DeleteMarkerDialogFragment.showDialog(getChildFragmentManager(), new long[]{markerId});
                return true;
            default:
                return super.onOptionsItemSelected(item);
@@ -84,9 +84,7 @@ public class ExportActivity extends FragmentActivity implements FileTypeDialogFr
    }

    private void fileTypeDialogStart() {
-        FileTypeDialogFragment
-                .newInstance(R.string.export_all_title, R.string.export_all_option)
-                .show(getSupportFragmentManager(), FileTypeDialogFragment.FILE_TYPE_DIALOG_TAG);
+        FileTypeDialogFragment.showDialog(getSupportFragmentManager(), R.string.export_all_title, R.string.export_all_option);
    }

    @Override
@@ -99,7 +99,7 @@ public class ExportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
    protected Boolean doInBackground(Void... params) {
        try {
            Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
-            boolean isRecording = PreferencesUtils.getLong(exportActivity, R.string.recording_track_id_key) != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+            boolean isRecording = PreferencesUtils.isRecording(exportActivity);
            boolean isPaused = PreferencesUtils.getBoolean(exportActivity, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
            // Get the wake lock if not recording or paused
            if (!isRecording || isPaused) {
@@ -49,9 +49,10 @@ public class KmlTrackWriter implements TrackWriter {
    private static final String END_STYLE = "end";
    private static final String TRACK_STYLE = "track";
    private static final String SCHEMA_ID = "schema";
-    private static final String CADENCE = "cadence";
-    private static final String HEART_RATE = "heart_rate";
-    private static final String POWER = "power";
+
+    private static final String SENSOR_TYPE_CADENCE = "cadence";
+    private static final String SENSOR_TYPE_HEART_RATE = "heart_rate";
+    private static final String SENSOR_TYPE_POWER = "power";

    private static final String WAYPOINT_ICON = "http://maps.google.com/mapfiles/kml/pushpin/blue-pushpin.png";
    private static final String STATISTICS_ICON = "http://maps.google.com/mapfiles/kml/pushpin/ylw-pushpin.png";
@@ -71,9 +72,6 @@ public class KmlTrackWriter implements TrackWriter {
    private List<Float> powerList = new ArrayList<>();
    private List<Float> cadenceList = new ArrayList<>();
    private List<Float> heartRateList = new ArrayList<>();
-    private boolean hasPower;
-    private boolean hasCadence;
-    private boolean hasHeartRate;

    private Location startLocation;

@@ -132,9 +130,9 @@ public class KmlTrackWriter implements TrackWriter {
            printWriter.println("<Schema id=\"" + SCHEMA_ID + "\">");

            if (exportSensorData) {
-                writeSensorStyle(POWER, context.getString(R.string.description_sensor_power));
-                writeSensorStyle(CADENCE, context.getString(R.string.description_sensor_cadence));
-                writeSensorStyle(HEART_RATE, context.getString(R.string.description_sensor_heart_rate));
+                writeSensorStyle(SENSOR_TYPE_POWER, context.getString(R.string.description_sensor_power));
+                writeSensorStyle(SENSOR_TYPE_CADENCE, context.getString(R.string.description_sensor_cadence));
+                writeSensorStyle(SENSOR_TYPE_HEART_RATE, context.getString(R.string.description_sensor_heart_rate));
            }
            printWriter.println("</Schema>");
        }
@@ -235,9 +233,6 @@ public class KmlTrackWriter implements TrackWriter {
    public void writeOpenSegment() {
        if (printWriter != null) {
            printWriter.println("<gx:Track>");
-            hasPower = false;
-            hasCadence = false;
-            hasHeartRate = false;
            powerList.clear();
            cadenceList.clear();
            heartRateList.clear();
@@ -250,14 +245,14 @@ public class KmlTrackWriter implements TrackWriter {
            printWriter.println("<ExtendedData>");
            printWriter.println("<SchemaData schemaUrl=\"#" + SCHEMA_ID + "\">");
            if (exportSensorData) {
-                if (hasPower) {
-                    writeSensorData(powerList, POWER);
+                if (powerList.size() > 0) {
+                    writeSensorData(powerList, SENSOR_TYPE_POWER);
                }
-                if (hasCadence) {
-                    writeSensorData(cadenceList, CADENCE);
+                if (cadenceList.size() > 0) {
+                    writeSensorData(cadenceList, SENSOR_TYPE_CADENCE);
                }
-                if (hasHeartRate) {
-                    writeSensorData(heartRateList, HEART_RATE);
+                if (heartRateList.size() > 0) {
+                    writeSensorData(heartRateList, SENSOR_TYPE_HEART_RATE);
                }
            }
            printWriter.println("</SchemaData>");
@@ -466,11 +461,11 @@ public class KmlTrackWriter implements TrackWriter {
     * Writes a sensor style.
     *
     * @param name        the name of the sesnor
-     * @param displayName the sensor display name
+     * @param sensorType the sensor display name
     */
-    private void writeSensorStyle(String name, String displayName) {
-        printWriter.println("<gx:SimpleArrayField name=\"" + name + "\" type=\"int\">");
-        printWriter.println("<displayName>" + StringUtils.formatCData(displayName) + "</displayName>");
+    private void writeSensorStyle(String name, String sensorType) {
+        printWriter.println("<gx:SimpleArrayField name=\"" + name + "\" type=\"float\">");
+        printWriter.println("<displayName>" + StringUtils.formatCData(sensorType) + "</displayName>");
        printWriter.println("</gx:SimpleArrayField>");
    }
 }
@@ -384,8 +384,7 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
     * @param message the message
     */
    protected String createErrorMessage(String message) {
-        return String.format(Locale.US, "Parsing error at line: %d column: %d. %s",
-                locator.getLineNumber(), locator.getColumnNumber(), message);
+        return String.format(Locale.US, "Parsing error at line: %d column: %d. %s", locator.getLineNumber(), locator.getColumnNumber(), message);
    }

    /**
@@ -85,9 +85,7 @@ public class ImportActivity extends FragmentActivity implements FileTypeDialogFr
    }

    private void fileTypeDialogStart() {
-        FileTypeDialogFragment
-                .newInstance(R.string.import_selection_title, R.string.import_selection_option)
-                .show(getSupportFragmentManager(), FileTypeDialogFragment.FILE_TYPE_DIALOG_TAG);
+        FileTypeDialogFragment.showDialog(getSupportFragmentManager(), R.string.import_selection_title, R.string.import_selection_option);
    }

    @Override
@@ -103,7 +103,7 @@ public class ImportAsyncTask extends AsyncTask<Void, Integer, Boolean> {
        try {
            Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
            // Get the wake lock if not recording or paused
-            boolean isRecording = PreferencesUtils.getLong(importActivity, R.string.recording_track_id_key) != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+            boolean isRecording = PreferencesUtils.isRecording(importActivity);
            boolean isPaused = PreferencesUtils.getBoolean(importActivity, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
            if (!isRecording || isPaused) {
                wakeLock = SystemUtils.acquireWakeLock(importActivity, wakeLock);
@@ -19,6 +19,7 @@ package de.dennisguse.opentracks.io.file.importer;
 import android.content.Context;
 import android.location.Location;
 import android.net.Uri;
+import android.util.Log;

 import androidx.annotation.VisibleForTesting;

@@ -39,6 +40,8 @@ import de.dennisguse.opentracks.content.sensor.SensorDataSet;
 */
 public class KmlFileTrackImporter extends AbstractFileTrackImporter {

+    private static final String TAG = KmlFileTrackImporter.class.getSimpleName();
+
    private static final String CADENCE = "cadence";
    private static final String HEART_RATE = "heart_rate";
    private static final String POWER = "power";
@@ -65,11 +68,11 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
    private static final String ATTRIBUTE_NAME = "name";

    private boolean trackStarted = false;
-    private String sensorName;
+    private String sensorType;
    private ArrayList<Location> locationList;
-    private ArrayList<Integer> cadenceList;
-    private ArrayList<Integer> heartRateList;
-    private ArrayList<Integer> powerList;
+    private ArrayList<Float> cadenceList;
+    private ArrayList<Float> heartRateList;
+    private ArrayList<Float> powerList;

    /**
     * Constructor.
@@ -229,20 +232,30 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
     */
    private void onTrackSegmentEnd() {
        // Close a track segment by inserting the segment locations
-        boolean hasHeartRate = heartRateList.size() == locationList.size();
-        boolean hasCadence = cadenceList.size() == locationList.size();
-        boolean hasPower = powerList.size() == locationList.size();
-
        for (int i = 0; i < locationList.size(); i++) {
            Location location = locationList.get(i);

-            if (!hasPower && !hasCadence && !hasHeartRate) {
+            boolean hasSensorData = false;
+            float heartrate = SensorDataSet.DATA_UNAVAILABLE;
+            float cadence = SensorDataSet.DATA_UNAVAILABLE;
+            float power = SensorDataSet.DATA_UNAVAILABLE;
+
+            if (i < heartRateList.size()) {
+                heartrate = heartRateList.get(i);
+                hasSensorData = true;
+            }
+            if (i < cadenceList.size()) {
+                cadence = cadenceList.get(i);
+                hasSensorData = true;
+            }
+            if (i < powerList.size()) {
+                power = powerList.get(i);
+                hasSensorData = true;
+            }
+
+            if (!hasSensorData) {
                insertTrackPoint(location);
            } else {
-                float heartrate = hasHeartRate ? heartRateList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-                float cadence = hasHeartRate ? cadenceList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-                float power = hasHeartRate ? powerList.get(i) : SensorDataSet.DATA_UNAVAILABLE;
-
                SensorDataSetLocation sensorDataSetLocation = new SensorDataSetLocation(location, new SensorDataSet(heartrate, cadence, power, SensorDataSet.DATA_UNAVAILABLE, location.getTime()));
                insertTrackPoint(sensorDataSetLocation);
            }
@@ -277,7 +290,7 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
     * On sensor data start. gx:SimpleArrayData start tag.
     */
    private void onSensorDataStart(Attributes attributes) {
-        sensorName = attributes.getValue(ATTRIBUTE_NAME);
+        sensorType = attributes.getValue(ATTRIBUTE_NAME);
    }

    /**
@@ -291,18 +304,24 @@ public class KmlFileTrackImporter extends AbstractFileTrackImporter {
        if (content.equals("")) {
            return;
        }
-        int value;
+        float value;
        try {
-            value = Integer.parseInt(content);
+            value = Float.valueOf(content);
        } catch (NumberFormatException e) {
            throw new SAXException(createErrorMessage("Unable to parse gx:value:" + content), e);
        }
-        if (POWER.equals(sensorName)) {
-            powerList.add(value);
-        } else if (HEART_RATE.equals(sensorName)) {
-            heartRateList.add(value);
-        } else if (CADENCE.equals(sensorName)) {
-            cadenceList.add(value);
+        switch (sensorType) {
+            case POWER:
+                powerList.add(value);
+                break;
+            case HEART_RATE:
+                heartRateList.add(value);
+                break;
+            case CADENCE:
+                cadenceList.add(value);
+                break;
+            default:
+                Log.w(TAG, "Data from sensor " + sensorType + " is not (yet) supported.");
        }
    }
 }
@@ -119,10 +119,9 @@ public class TrackRecordingService extends Service {
        @Override
        public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_id_key))) {
-                long trackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
                // Only through the TrackRecordingService can one stop a recording and set the recordingTrackId to -1L.
-                if (trackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-                    recordingTrackId = trackId;
+                if (PreferencesUtils.isRecording(context)) {
+                    recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
                }
            }
            if (key == null || key.equals(PreferencesUtils.getKey(context, R.string.recording_track_paused_key))) {
@@ -310,7 +309,7 @@ public class TrackRecordingService extends Service {
     * Returns true if the service is recording.
     */
    public boolean isRecording() {
-        return recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+        return PreferencesUtils.isRecording(recordingTrackId);
    }

    /**
@@ -854,7 +853,7 @@ public class TrackRecordingService extends Service {
     */
    private void insertLocation(Track track, Location location, Location lastValidTrackPoint) {
        if (location == null) {
-            Log.w(TAG, "Ignore insertLocation. loation is null.");
+            Log.w(TAG, "Ignore insertLocation. location is null.");
            return;
        }
        // Do not insert if inserted already
@@ -226,37 +226,14 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
        }
    }

-    /**
-     * Stops the recording.
-     *
-     * @param context    the context
-     * @param showEditor true to show the editor
-     */
-    public void stopRecording(@NonNull Context context, boolean showEditor) {
-        ITrackRecordingService trackRecordingService = getServiceIfBound();
-        if (trackRecordingService == null) {
-            resetRecordingState(context);
-        } else {
-            try {
-                if (showEditor) {
-                    // Need to remember the recordingTrackId before calling endCurrentTrack() as endCurrentTrack() sets the value to -1L.
-                    long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
-                    trackRecordingService.endCurrentTrack();
-                    if (recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-                        Intent intent = IntentUtils.newIntent(context, TrackEditActivity.class)
-                                .putExtra(TrackEditActivity.EXTRA_TRACK_ID, recordingTrackId)
-                                .putExtra(TrackEditActivity.EXTRA_NEW_TRACK, true);
-                        context.startActivity(intent);
-                    }
-                } else {
-                    trackRecordingService.endCurrentTrack();
-                }
-            } catch (Exception e) {
-                //TODO What exception are we catching here? Should be removed...
-                Log.e(TAG, "Unable to stop recording.", e);
-            }
+    private static void resetRecordingState(Context context) {
+        if (PreferencesUtils.isRecording(context)) {
+            PreferencesUtils.setLong(context, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
+        }
+        boolean recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+        if (!recordingTrackPaused) {
+            PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
        }
-        unbindAndStop();
    }

    /**
@@ -284,14 +261,36 @@ public class TrackRecordingServiceConnection implements ServiceConnection, Death
        return -1L;
    }

-    private static void resetRecordingState(Context context) {
-        long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
-        if (recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT) {
-            PreferencesUtils.setLong(context, R.string.recording_track_id_key, PreferencesUtils.RECORDING_TRACK_ID_DEFAULT);
-        }
-        boolean recordingTrackPaused = PreferencesUtils.getBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
-        if (!recordingTrackPaused) {
-            PreferencesUtils.setBoolean(context, R.string.recording_track_paused_key, PreferencesUtils.RECORDING_TRACK_PAUSED_DEFAULT);
+    /**
+     * Stops the recording.
+     *
+     * @param context    the context
+     * @param showEditor true to show the editor
+     */
+    public void stopRecording(@NonNull Context context, boolean showEditor) {
+        ITrackRecordingService trackRecordingService = getServiceIfBound();
+        if (trackRecordingService == null) {
+            resetRecordingState(context);
+        } else {
+            try {
+                if (showEditor) {
+                    // Need to remember the recordingTrackId before calling endCurrentTrack() as endCurrentTrack() sets the value to -1L.
+                    long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
+                    trackRecordingService.endCurrentTrack();
+                    if (PreferencesUtils.isRecording(context)) {
+                        Intent intent = IntentUtils.newIntent(context, TrackEditActivity.class)
+                                .putExtra(TrackEditActivity.EXTRA_TRACK_ID, recordingTrackId)
+                                .putExtra(TrackEditActivity.EXTRA_NEW_TRACK, true);
+                        context.startActivity(intent);
+                    }
+                } else {
+                    trackRecordingService.endCurrentTrack();
+                }
+            } catch (Exception e) {
+                //TODO What exception are we catching here? Should be removed...
+                Log.e(TAG, "Unable to stop recording.", e);
+            }
        }
+        unbindAndStop();
    }
 }
@@ -17,8 +17,7 @@
 package de.dennisguse.opentracks.settings;

 import android.content.Context;
-import android.os.Parcelable;
-import android.preference.DialogPreference;
+import android.os.Bundle;
 import android.util.AttributeSet;
 import android.view.KeyEvent;
 import android.view.MotionEvent;
@@ -28,7 +27,11 @@ import android.widget.ArrayAdapter;
 import android.widget.AutoCompleteTextView;
 import android.widget.Spinner;

+import androidx.preference.DialogPreference;
+import androidx.preference.PreferenceDialogFragmentCompat;
+
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.util.PreferencesUtils;
 import de.dennisguse.opentracks.util.TrackIconUtils;

@@ -39,106 +42,119 @@ import de.dennisguse.opentracks.util.TrackIconUtils;
 */
 public class ActivityTypePreference extends DialogPreference {

-    private RecordingSettingsActivity recordingSettingsActivity;
-    private AutoCompleteTextView textView;
-    private Spinner spinner;
+    private SummaryProvider<DialogPreference> summaryProvider = new SummaryProvider<DialogPreference>() {
+        @Override
+        public CharSequence provideSummary(DialogPreference preference) {
+            String defaultActivity = PreferencesUtils.getString(ActivityTypePreference.this.getContext(), R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
+            return defaultActivity != null && !defaultActivity.equals(PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT) ? defaultActivity : getContext().getString(R.string.value_unknown);
+        }
+    };

    public ActivityTypePreference(Context context, AttributeSet attrs) {
        super(context, attrs);
-        setDialogLayoutResource(R.layout.activity_type_preference);
+        setDialogLayoutResource(R.layout.preference_activity_type);
        setPositiveButtonText(android.R.string.ok);
        setNegativeButtonText(android.R.string.cancel);
        setDialogIcon(null);
-        setPersistent(false);
+        setPersistent(true);
+        //TODO: for some reason the summary is not updated; after changing it. Enable summaryprovider, when fixed.
+//        setSummaryProvider(summaryProvider);
    }

    @Override
-    protected View onCreateDialogView() {
-        View view = super.onCreateDialogView();
-        textView = view.findViewById(R.id.activity_type_preference_text_view);
-        spinner = view.findViewById(R.id.activity_type_preference_spinner);
+    public int getDialogLayoutResource() {
+        return R.layout.preference_activity_type;
+    }

-        String category = PreferencesUtils.getString(
-                getContext(), R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
-        textView.setText(category);
+    public static class ActivityPreferenceDialog extends PreferenceDialogFragmentCompat {

-        ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(getContext(), R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
-        textView.setAdapter(adapter);
-        textView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
-            @Override
-            public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
-                String iconValue = TrackIconUtils.getIconValue(getContext(), (String) textView.getAdapter().getItem(position));
-                TrackIconUtils.setIconSpinner(spinner, iconValue);
-            }
-        });
-        textView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
-            @Override
-            public void onFocusChange(View v, boolean hasFocus) {
-                if (!hasFocus) {
-                    String iconValue = TrackIconUtils.getIconValue(getContext(), textView.getText().toString());
+        private AutoCompleteTextView textView;
+        private Spinner spinner;
+
+        static ActivityPreferenceDialog newInstance(String preferenceKey) {
+            ActivityTypePreference.ActivityPreferenceDialog dialog = new ActivityTypePreference.ActivityPreferenceDialog();
+            final Bundle bundle = new Bundle(1);
+            bundle.putString(PreferenceDialogFragmentCompat.ARG_KEY, preferenceKey);
+            dialog.setArguments(bundle);
+
+            return dialog;
+        }
+
+        @Override
+        protected void onBindDialogView(View view) {
+            super.onBindDialogView(view);
+
+            final Context context = getActivity();
+
+            textView = view.findViewById(R.id.activity_type_preference_text_view);
+            String category = PreferencesUtils.getString(context, R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
+            textView.setText(category);
+            ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(context, R.array.activity_types, android.R.layout.simple_dropdown_item_1line);
+            textView.setAdapter(adapter);
+            textView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
+                @Override
+                public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
+                    String iconValue = TrackIconUtils.getIconValue(context, (String) textView.getAdapter().getItem(position));
                    TrackIconUtils.setIconSpinner(spinner, iconValue);
                }
-            }
-        });
-
-        String iconValue = TrackIconUtils.getIconValue(getContext(), category);
-        spinner.setAdapter(TrackIconUtils.getIconSpinnerAdapter(getContext(), iconValue));
-        spinner.setOnTouchListener(new View.OnTouchListener() {
-            @Override
-            public boolean onTouch(View v, MotionEvent event) {
-                if (event.getAction() == MotionEvent.ACTION_UP) {
-                    recordingSettingsActivity.showChooseActivityTypeDialog();
+            });
+            textView.setOnFocusChangeListener(new View.OnFocusChangeListener() {
+                @Override
+                public void onFocusChange(View v, boolean hasFocus) {
+                    if (!hasFocus) {
+                        String iconValue = TrackIconUtils.getIconValue(context, textView.getText().toString());
+                        TrackIconUtils.setIconSpinner(spinner, iconValue);
+                    }
                }
-                return true;
-            }
-        });
-        spinner.setOnKeyListener(new View.OnKeyListener() {
-            @Override
-            public boolean onKey(View v, int keyCode, KeyEvent event) {
-                if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
-                    recordingSettingsActivity.showChooseActivityTypeDialog();
-                }
-                return true;
-            }
-        });
-        return view;
-    }
+            });

-    @Override
-    protected void onDialogClosed(boolean positiveResult) {
-        if (positiveResult) {
-            String value = textView.getText().toString();
-            if (callChangeListener(value)) {
-                PreferencesUtils.setString(getContext(), R.string.default_activity_key, value);
+            String iconValue = TrackIconUtils.getIconValue(context, category);
+            spinner = view.findViewById(R.id.activity_type_preference_spinner);
+            spinner.setAdapter(TrackIconUtils.getIconSpinnerAdapter(context, iconValue));
+            spinner.setOnTouchListener(new View.OnTouchListener() {
+                @Override
+                public boolean onTouch(View v, MotionEvent event) {
+                    if (event.getAction() == MotionEvent.ACTION_UP) {
+                        showIconSelectDialog();
+                    }
+                    return true;
+                }
+            });
+            spinner.setOnKeyListener(new View.OnKeyListener() {
+                @Override
+                public boolean onKey(View v, int keyCode, KeyEvent event) {
+                    if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
+                        showIconSelectDialog();
+                    }
+                    return true;
+                }
+            });
+        }
+
+        private void showIconSelectDialog() {
+            String category = PreferencesUtils.getString(getActivity(), R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
+            ChooseActivityTypeDialogFragment.showDialog(getActivity().getSupportFragmentManager(), category);
+        }
+
+        @Override
+        public void onDialogClosed(boolean positiveResult) {
+            if (positiveResult) {
+                String newDefaultActivity = textView.getText().toString();
+                if (getPreference().callChangeListener(newDefaultActivity)) {
+                    PreferencesUtils.setString(getActivity(), R.string.default_activity_key, newDefaultActivity);
+                }
            }
        }
-    }

-    @Override
-    protected void onRestoreInstanceState(Parcelable state) {
-        super.onRestoreInstanceState(state);
-        String iconValue = TrackIconUtils.getIconValue(getContext(), textView.getText().toString());
-        TrackIconUtils.setIconSpinner(spinner, iconValue);
-        textView.clearFocus();
-    }
-
-    /**
-     * Sets the recording settings activity.
-     *
-     * @param activity the activity
-     */
-    void setRecordingSettingsActivity(RecordingSettingsActivity activity) {
-        recordingSettingsActivity = activity;
-    }
-
-    /**
-     * Updates the value of the dialog.
-     *
-     * @param iconValue the icon value
-     */
-    void updateValue(String iconValue) {
-        TrackIconUtils.setIconSpinner(spinner, iconValue);
-        textView.setText(recordingSettingsActivity.getString(TrackIconUtils.getIconActivityType(iconValue)));
-        textView.clearFocus();
+        /**
+         * Updates the value of the dialog.
+         *
+         * @param iconValue the icon value
+         */
+        public void updateUI(String iconValue) {
+            TrackIconUtils.setIconSpinner(spinner, iconValue);
+            textView.setText(getActivity().getString(TrackIconUtils.getIconActivityType(iconValue)));
+            textView.clearFocus();
+        }
    }
 }
@@ -0,0 +1,213 @@
+package de.dennisguse.opentracks.settings;
+
+import android.bluetooth.BluetoothAdapter;
+import android.content.Context;
+
+import androidx.preference.ListPreference;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.util.BluetoothDeviceUtils;
+import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.UnitConversions;
+
+final class PreferenceHelper {
+
+    /**
+     * Sets the min recording interval options.
+     *
+     * @param options the options
+     * @param values  the values
+     */
+    static void setMinRecordingIntervalOptions(Context context, String[] options, String[] values) {
+        for (int i = 0; i < values.length; i++) {
+            int value = Integer.parseInt(values[i]);
+            switch (value) {
+                case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_BATTERY_LIFE:
+                    options[i] = context.getString(R.string.value_adapt_battery_life);
+                    break;
+                case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_ACCURACY:
+                    options[i] = context.getString(R.string.value_adapt_accuracy);
+                    break;
+                case PreferencesUtils.MIN_RECORDING_INTERVAL_DEFAULT:
+                    options[i] = context.getString(R.string.value_smallest_recommended);
+                    break;
+                default:
+                    options[i] = value < 60 ? context.getString(R.string.value_integer_second, value) : context.getString(R.string.value_integer_minute, value / 60);
+            }
+        }
+    }
+
+    /**
+     * Sets the recording distance interval options.
+     *
+     * @param options     the options
+     * @param values      the values
+     * @param metricUnits true for metric units
+     */
+    static void setRecordingDistanceIntervalOptions(Context context, String[] options, String[] values, boolean metricUnits) {
+        for (int i = 0; i < values.length; i++) {
+            int value = Integer.parseInt(values[i]);
+            String displayValue;
+            if (metricUnits) {
+                displayValue = context.getString(R.string.value_integer_meter, value);
+                if (value == PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT) {
+                    options[i] = context.getString(R.string.value_integer_meter_recommended, value);
+                } else {
+                    options[i] = displayValue;
+                }
+            } else {
+                int feet = (int) (value * UnitConversions.M_TO_FT);
+                displayValue = context.getString(R.string.value_integer_feet, feet);
+                if (value == PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT) {
+                    options[i] = context.getString(R.string.value_integer_feet_recommended, feet);
+                } else {
+                    options[i] = displayValue;
+                }
+            }
+        }
+    }
+
+    /**
+     * Sets the max recording distance options.
+     *
+     * @param options     the options
+     * @param values      the values
+     * @param metricUnits true for metric units
+     */
+    static void setMaxRecordingDistanceOptions(Context context, String[] options, String[] values, boolean metricUnits) {
+        for (int i = 0; i < values.length; i++) {
+            int value = Integer.parseInt(values[i]);
+            String displayValue;
+            if (metricUnits) {
+                displayValue = context.getString(R.string.value_integer_meter, value);
+                if (value == PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT) {
+                    options[i] = context.getString(R.string.value_integer_meter_recommended, value);
+                } else {
+                    options[i] = displayValue;
+                }
+            } else {
+                int feet = (int) (value * UnitConversions.M_TO_FT);
+                if (feet < 2000) {
+                    displayValue = context.getString(R.string.value_integer_feet, feet);
+                    if (value == PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT) {
+                        options[i] = context.getString(R.string.value_integer_feet_recommended, feet);
+                    } else {
+                        options[i] = displayValue;
+                    }
+                } else {
+                    double mile = feet * UnitConversions.FT_TO_MI;
+                    displayValue = context.getString(R.string.value_float_mile, mile);
+                    options[i] = displayValue;
+                }
+            }
+        }
+    }
+
+    /**
+     * Sets the recording gps accuracy options.
+     *
+     * @param options     the options
+     * @param values      the values
+     * @param metricUnits true for metric units
+     */
+    static void setRecordingGpsAccuracyOptions(Context context, String[] options, String[] values, boolean metricUnits) {
+        for (int i = 0; i < values.length; i++) {
+            int value = Integer.parseInt(values[i]);
+            String displayValue;
+            if (metricUnits) {
+                displayValue = context.getString(R.string.value_integer_meter, value);
+                switch (value) {
+                    case PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT:
+                        options[i] = context.getString(R.string.value_integer_meter_recommended, value);
+                        break;
+                    case PreferencesUtils.RECORDING_GPS_ACCURACY_EXCELLENT:
+                        options[i] = context.getString(R.string.value_integer_meter_excellent_gps, value);
+                        break;
+                    case PreferencesUtils.RECORDING_GPS_ACCURACY_POOR:
+                        options[i] = context.getString(R.string.value_integer_meter_poor_gps, value);
+                        break;
+                    default:
+                        options[i] = displayValue;
+                }
+            } else {
+                int feet = (int) (value * UnitConversions.M_TO_FT);
+                if (feet < 2000) {
+                    displayValue = context.getString(R.string.value_integer_feet, feet);
+                    switch (value) {
+                        case PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT:
+                            options[i] = context.getString(R.string.value_integer_feet_recommended, feet);
+                            break;
+                        case PreferencesUtils.RECORDING_GPS_ACCURACY_EXCELLENT:
+                            options[i] = context.getString(R.string.value_integer_feet_excellent_gps, feet);
+                            break;
+                        default:
+                            options[i] = displayValue;
+                    }
+                } else {
+                    double mile = feet * UnitConversions.FT_TO_MI;
+                    displayValue = context.getString(R.string.value_float_mile, mile);
+                    if (value == PreferencesUtils.RECORDING_GPS_ACCURACY_POOR) {
+                        options[i] = context.getString(R.string.value_float_mile_poor_gps, mile);
+                    } else {
+                        options[i] = displayValue;
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Sets the auto resume track timeout options.
+     *
+     * @param options the options
+     * @param values  the values
+     */
+    static void setAutoResumeTrackTimeoutOptions(Context context, String[] options, String[] values) {
+        for (int i = 0; i < values.length; i++) {
+            int value = Integer.parseInt(values[i]);
+            switch (value) {
+                case PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_NEVER:
+                    options[i] = context.getString(R.string.value_never);
+                    break;
+                case PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_ALWAYS:
+                    options[i] = context.getString(R.string.value_always);
+                    break;
+                default:
+                    options[i] = context.getString(R.string.value_integer_minute, value);
+            }
+        }
+    }
+
+    /**
+     * Configures the bluetooth sensor.
+     */
+    static void configureBluetoothSensorList(ListPreference preference) {
+        Context context = preference.getContext();
+
+        String value = PreferencesUtils.getString(context, R.string.bluetooth_sensor_key, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
+        List<String> devicesNameList = new ArrayList<>();
+        List<String> devicesAddressList = new ArrayList<>();
+        BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+        if (bluetoothAdapter != null) {
+            BluetoothDeviceUtils.populateDeviceLists(bluetoothAdapter, devicesNameList, devicesAddressList);
+        }
+
+        // Was the previously configured device unpaired? Then forget it.
+        if (!devicesAddressList.contains(value)) {
+            value = PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT;
+            PreferencesUtils.setString(context, R.string.bluetooth_sensor_key, value);
+        }
+
+        devicesNameList.add(0, context.getString(R.string.value_none));
+        devicesAddressList.add(0, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
+
+        String[] values = devicesAddressList.toArray(new String[0]);
+        preference.setEntryValues(values);
+
+        String[] options = devicesNameList.toArray(new String[0]);
+        preference.setEntries(options);
+    }
+}
@@ -1,303 +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.settings;
-
-import android.app.Dialog;
-import android.os.Bundle;
-import android.preference.ListPreference;
-import android.preference.Preference;
-import android.preference.PreferenceActivity;
-
-import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
-import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller;
-import de.dennisguse.opentracks.util.PreferencesUtils;
-import de.dennisguse.opentracks.util.StringUtils;
-import de.dennisguse.opentracks.util.UnitConversions;
-
-/**
- * An activity for accessing recording settings.
- *
- * @author Jimmy Shih
- */
-public class RecordingSettingsActivity extends PreferenceActivity implements ChooseActivityTypeCaller {
-
-    private static final int DIALOG_CHOOSE_ACTIVITY = 0;
-
-    private ActivityTypePreference activityTypePreference;
-
-    @Override
-    protected void onCreate(Bundle bundle) {
-        super.onCreate(bundle);
-        addPreferencesFromResource(R.xml.settings_recording);
-
-        boolean metricUnits = PreferencesUtils.isMetricUnits(this);
-
-        configFrequencyPreference(R.string.voice_frequency_key, metricUnits);
-        configFrequencyPreference(R.string.split_frequency_key, metricUnits);
-        configDefaultActivity();
-        configListPreference(R.string.min_recording_interval_key, R.array.min_recording_interval_values, metricUnits);
-        configListPreference(R.string.recording_distance_interval_key, R.array.recording_distance_interval_values, metricUnits);
-        configListPreference(R.string.max_recording_distance_key, R.array.max_recording_distance_values, metricUnits);
-        configListPreference(R.string.recording_gps_accuracy_key, R.array.recording_gps_accuracy_values, metricUnits);
-        configListPreference(R.string.auto_resume_track_timeout_key, R.array.auto_resume_track_timeout_values, metricUnits);
-    }
-
-    @Override
-    protected Dialog onCreateDialog(int id, Bundle bundle) {
-        if (id != DIALOG_CHOOSE_ACTIVITY) {
-            return null;
-        }
-
-        String category = PreferencesUtils.getString(
-                this, R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
-        return ChooseActivityTypeDialogFragment.getDialog(this, category, this);
-    }
-
-    private void configFrequencyPreference(int key, boolean metricUnits) {
-        ListPreference preference = (ListPreference) findPreference(getString(key));
-
-        String[] options = StringUtils.getFrequencyOptions(this, metricUnits);
-        preference.setEntries(options);
-    }
-
-    private void configDefaultActivity() {
-        activityTypePreference = (ActivityTypePreference) findPreference(getString(R.string.default_activity_key));
-        String defaultActivity = PreferencesUtils.getString(
-                this, R.string.default_activity_key, PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT);
-        activityTypePreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
-            @Override
-            public boolean onPreferenceChange(Preference pref, Object newValue) {
-                String stringValue = (String) newValue;
-                pref.setSummary(stringValue != null && !stringValue.equals(PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT) ? stringValue : getString(R.string.value_unknown));
-                return true;
-            }
-        });
-        activityTypePreference.setSummary(defaultActivity != null && !defaultActivity.equals(PreferencesUtils.DEFAULT_ACTIVITY_DEFAULT) ? defaultActivity : getString(R.string.value_unknown));
-        activityTypePreference.setRecordingSettingsActivity(this);
-    }
-
-    private void configListPreference(int key, int valueArray, boolean metricUnits) {
-        ListPreference preference = (ListPreference) findPreference(getString(key));
-
-        @Deprecated //TODO Can we make values an int array?
-        String[] values = getResources().getStringArray(valueArray);
-        String[] options = new String[values.length];
-        switch (key) {
-            case R.string.min_recording_interval_key:
-                setMinRecordingIntervalOptions(options, values);
-                break;
-            case R.string.recording_distance_interval_key:
-                setRecordingDistanceIntervalOptions(options, values, metricUnits);
-                break;
-            case R.string.max_recording_distance_key:
-                setMaxRecordingDistanceOptions(options, values, metricUnits);
-                break;
-            case R.string.recording_gps_accuracy_key:
-                setRecordingGpsAccuracyOptions(options, values, metricUnits);
-                break;
-            case R.string.auto_resume_track_timeout_key:
-                setAutoResumeTrackTimeoutOptions(options, values);
-                break;
-            default:
-                return;
-        }
-
-        preference.setEntries(options);
-    }
-
-    /**
-     * Sets the min recording interval options.
-     *
-     * @param options the options
-     * @param values  the values
-     */
-    private void setMinRecordingIntervalOptions(String[] options, String[] values) {
-        for (int i = 0; i < values.length; i++) {
-            int value = Integer.parseInt(values[i]);
-            switch (value) {
-                case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_BATTERY_LIFE:
-                    options[i] = getString(R.string.value_adapt_battery_life);
-                    break;
-                case PreferencesUtils.MIN_RECORDING_INTERVAL_ADAPT_ACCURACY:
-                    options[i] = getString(R.string.value_adapt_accuracy);
-                    break;
-                case PreferencesUtils.MIN_RECORDING_INTERVAL_DEFAULT:
-                    options[i] = getString(R.string.value_smallest_recommended);
-                    break;
-                default:
-                    options[i] = value < 60 ? getString(R.string.value_integer_second, value)
-                            : getString(R.string.value_integer_minute, value / 60);
-            }
-        }
-    }
-
-    /**
-     * Sets the recording distance interval options.
-     *
-     * @param options     the options
-     * @param values      the values
-     * @param metricUnits true for metric units
-     */
-    private void setRecordingDistanceIntervalOptions(String[] options, String[] values, boolean metricUnits) {
-        for (int i = 0; i < values.length; i++) {
-            int value = Integer.parseInt(values[i]);
-            String displayValue;
-            if (metricUnits) {
-                displayValue = getString(R.string.value_integer_meter, value);
-                if (value == PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT) {
-                    options[i] = getString(R.string.value_integer_meter_recommended, value);
-                } else {
-                    options[i] = displayValue;
-                }
-            } else {
-                int feet = (int) (value * UnitConversions.M_TO_FT);
-                displayValue = getString(R.string.value_integer_feet, feet);
-                if (value == PreferencesUtils.RECORDING_DISTANCE_INTERVAL_DEFAULT) {
-                    options[i] = getString(R.string.value_integer_feet_recommended, feet);
-                } else {
-                    options[i] = displayValue;
-                }
-            }
-        }
-    }
-
-    /**
-     * Sets the max recording distance options.
-     *
-     * @param options     the options
-     * @param values      the values
-     * @param metricUnits true for metric units
-     */
-    private void setMaxRecordingDistanceOptions(String[] options, String[] values, boolean metricUnits) {
-        for (int i = 0; i < values.length; i++) {
-            int value = Integer.parseInt(values[i]);
-            String displayValue;
-            if (metricUnits) {
-                displayValue = getString(R.string.value_integer_meter, value);
-                if (value == PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT) {
-                    options[i] = getString(R.string.value_integer_meter_recommended, value);
-                } else {
-                    options[i] = displayValue;
-                }
-            } else {
-                int feet = (int) (value * UnitConversions.M_TO_FT);
-                if (feet < 2000) {
-                    displayValue = getString(R.string.value_integer_feet, feet);
-                    if (value == PreferencesUtils.MAX_RECORDING_DISTANCE_DEFAULT) {
-                        options[i] = getString(R.string.value_integer_feet_recommended, feet);
-                    } else {
-                        options[i] = displayValue;
-                    }
-                } else {
-                    double mile = feet * UnitConversions.FT_TO_MI;
-                    displayValue = getString(R.string.value_float_mile, mile);
-                    options[i] = displayValue;
-                }
-            }
-        }
-    }
-
-    /**
-     * Sets the recording gps accuracy options.
-     *
-     * @param options     the options
-     * @param values      the values
-     * @param metricUnits true for metric units
-     */
-    private void setRecordingGpsAccuracyOptions(String[] options, String[] values, boolean metricUnits) {
-        for (int i = 0; i < values.length; i++) {
-            int value = Integer.parseInt(values[i]);
-            String displayValue;
-            if (metricUnits) {
-                displayValue = getString(R.string.value_integer_meter, value);
-                switch (value) {
-                    case PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT:
-                        options[i] = getString(R.string.value_integer_meter_recommended, value);
-                        break;
-                    case PreferencesUtils.RECORDING_GPS_ACCURACY_EXCELLENT:
-                        options[i] = getString(R.string.value_integer_meter_excellent_gps, value);
-                        break;
-                    case PreferencesUtils.RECORDING_GPS_ACCURACY_POOR:
-                        options[i] = getString(R.string.value_integer_meter_poor_gps, value);
-                        break;
-                    default:
-                        options[i] = displayValue;
-                }
-            } else {
-                int feet = (int) (value * UnitConversions.M_TO_FT);
-                if (feet < 2000) {
-                    displayValue = getString(R.string.value_integer_feet, feet);
-                    switch (value) {
-                        case PreferencesUtils.RECORDING_GPS_ACCURACY_DEFAULT:
-                            options[i] = getString(R.string.value_integer_feet_recommended, feet);
-                            break;
-                        case PreferencesUtils.RECORDING_GPS_ACCURACY_EXCELLENT:
-                            options[i] = getString(R.string.value_integer_feet_excellent_gps, feet);
-                            break;
-                        default:
-                            options[i] = displayValue;
-                    }
-                } else {
-                    double mile = feet * UnitConversions.FT_TO_MI;
-                    displayValue = getString(R.string.value_float_mile, mile);
-                    if (value == PreferencesUtils.RECORDING_GPS_ACCURACY_POOR) {
-                        options[i] = getString(R.string.value_float_mile_poor_gps, mile);
-                    } else {
-                        options[i] = displayValue;
-                    }
-                }
-            }
-        }
-    }
-
-    /**
-     * Sets the auto resume track timeout options.
-     *
-     * @param options the options
-     * @param values  the values
-     */
-    private void setAutoResumeTrackTimeoutOptions(String[] options, String[] values) {
-        for (int i = 0; i < values.length; i++) {
-            int value = Integer.parseInt(values[i]);
-            switch (value) {
-                case PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_NEVER:
-                    options[i] = getString(R.string.value_never);
-                    break;
-                case PreferencesUtils.AUTO_RESUME_TRACK_TIMEOUT_ALWAYS:
-                    options[i] = getString(R.string.value_always);
-                    break;
-                default:
-                    options[i] = getString(R.string.value_integer_minute, value);
-            }
-        }
-    }
-
-    public void showChooseActivityTypeDialog() {
-        try {
-            removeDialog(DIALOG_CHOOSE_ACTIVITY);
-        } catch (Exception e) {
-            // Can safely ignore.
-        }
-        showDialog(DIALOG_CHOOSE_ACTIVITY);
-    }
-
-    @Override
-    public void onChooseActivityTypeDone(String iconValue) {
-        activityTypePreference.updateValue(iconValue);
-    }
-}
@@ -1,11 +1,13 @@
 package de.dennisguse.opentracks.settings;

 import android.content.Context;
-import android.content.DialogInterface;
-import android.preference.DialogPreference;
+import android.os.Bundle;
 import android.util.AttributeSet;
 import android.widget.Toast;

+import androidx.preference.DialogPreference;
+import androidx.preference.PreferenceDialogFragmentCompat;
+
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.util.PreferencesUtils;

@@ -15,13 +17,24 @@ public class ResetDialogPreference extends DialogPreference {
        super(context, attrs);
    }

-    @Override
-    public void onClick(DialogInterface dialog, int which) {
-        super.onClick(dialog, which);
-        if (which == DialogInterface.BUTTON_POSITIVE) {
-            PreferencesUtils.resetPreferences(getContext(), true);
+    public static class ResetPreferenceDialog extends PreferenceDialogFragmentCompat {

-            Toast.makeText(getContext(), R.string.settings_reset_done, Toast.LENGTH_SHORT).show();
+        static PreferenceDialogFragmentCompat newInstance(String preferenceKey) {
+            ResetPreferenceDialog dialog = new ResetPreferenceDialog();
+            final Bundle bundle = new Bundle(1);
+            bundle.putString(PreferenceDialogFragmentCompat.ARG_KEY, preferenceKey);
+            dialog.setArguments(bundle);
+
+            return dialog;
+        }
+
+        @Override
+        public void onDialogClosed(boolean positiveResult) {
+            if (positiveResult) {
+                PreferencesUtils.resetPreferences(getActivity(), true);
+
+                Toast.makeText(getActivity(), R.string.settings_reset_done, Toast.LENGTH_SHORT).show();
+            }
        }
    }
 }
@@ -1,159 +1,182 @@
-/*
- * Copyright 2008 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.settings;

-import android.bluetooth.BluetoothAdapter;
-import android.content.Intent;
 import android.content.SharedPreferences;
 import android.os.Bundle;
-import android.preference.ListPreference;
-import android.preference.Preference;
-import android.preference.Preference.OnPreferenceClickListener;
-import android.preference.PreferenceActivity;
-import android.provider.Settings;

-import java.util.ArrayList;
-import java.util.List;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.fragment.app.DialogFragment;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceFragmentCompat;

 import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.util.BluetoothDeviceUtils;
-import de.dennisguse.opentracks.util.IntentUtils;
+import de.dennisguse.opentracks.fragments.ChooseActivityTypeDialogFragment;
 import de.dennisguse.opentracks.util.PreferencesUtils;
+import de.dennisguse.opentracks.util.StringUtils;

-/**
- * An activity for accessing settings.
- *
- * @author Jimmy Shih
- */
-public class SettingsActivity extends PreferenceActivity {
+public class SettingsActivity extends AppCompatActivity implements ChooseActivityTypeDialogFragment.ChooseActivityTypeCaller {

-    private long recordingTrackId = PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-
-    /*
-     * Note that sharedPreferenceChangeListenr cannot be an anonymous inner class.
-     * Anonymous inner class will get garbage collected.
-     */
-    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
-        @Override
-        public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (key != null && key.equals(PreferencesUtils.getKey(SettingsActivity.this, R.string.recording_track_id_key))) {
-                recordingTrackId = PreferencesUtils.getLong(SettingsActivity.this, R.string.recording_track_id_key);
-            }
-
-            //TODO Should only be called if something meaningful happens.
-            runOnUiThread(new Runnable() {
-                @Override
-                public void run() {
-                    updateUI();
-                }
-            });
-        }
-    };
+    private PrefsFragment prefsFragment = new PrefsFragment();

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

-        addPreferencesFromResource(R.xml.settings);
+        setContentView(R.layout.settings);

-        configPreference(R.string.settings_stats_key, StatsSettingsActivity.class);
-        configPreference(R.string.settings_recording_key, RecordingSettingsActivity.class);
+        Toolbar toolbar = findViewById(R.id.toolbar);
+        toolbar.setTitle(R.string.menu_settings);
+        setSupportActionBar(toolbar);

-        findPreference(getString(R.string.settings_sensor_bluetooth_pairing_key))
-                .setOnPreferenceClickListener(new OnPreferenceClickListener() {
-                    public boolean onPreferenceClick(Preference preference) {
-                        Intent settingsIntent = new Intent(Settings.ACTION_BLUETOOTH_SETTINGS);
-                        startActivity(settingsIntent);
-                        return true;
+        getSupportFragmentManager().beginTransaction().replace(R.id.settings_fragment, prefsFragment).commit();
+    }
+
+    @Override
+    public void onChooseActivityTypeDone(String iconValue) {
+        prefsFragment.setDefaultActivity(iconValue);
+    }
+
+    public static class PrefsFragment extends PreferenceFragmentCompat {
+
+        /*
+         * Note that sharedPreferenceChangeListener cannot be an anonymous inner class.
+         * Anonymous inner class will get garbage collected.
+         */
+        private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
+            @Override
+            public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
+                getActivity().runOnUiThread(new Runnable() {
+                    @Override
+                    public void run() {
+                        updateUI();
                    }
                });
-    }

-    @Override
-    protected void onResume() {
-        super.onResume();
-        PreferencesUtils.getSharedPreferences(this).registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
-        recordingTrackId = PreferencesUtils.getLong(this, R.string.recording_track_id_key);
-        updateUI();
-
-        configBluetoothSensor();
-    }
-
-    @Override
-    protected void onPause() {
-        super.onPause();
-        PreferencesUtils.getSharedPreferences(this).unregisterOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
-    }
-
-    /**
-     * Configures a preference by starting a new activity when it is clicked.
-     *
-     * @param key the preference key
-     * @param cl  the class to start the new activity
-     */
-    private void configPreference(int key, final Class<?> cl) {
-        Preference preference = findPreference(getString(key));
-        preference.setOnPreferenceClickListener(new OnPreferenceClickListener() {
-            @Override
-            public boolean onPreferenceClick(Preference pref) {
-                Intent intent = IntentUtils.newIntent(SettingsActivity.this, cl);
-                startActivity(intent);
-                return true;
+                if (key == null || key.equals(PreferencesUtils.getKey(getActivity(), R.string.stats_units_key))) {
+                    getActivity().runOnUiThread(new Runnable() {
+                        @Override
+                        public void run() {
+                            updateUnits();
+                        }
+                    });
+                }
            }
-        });
-    }
+        };

-    /**
-     * Configures the bluetooth sensor.
-     */
-    private void configBluetoothSensor() {
-        ListPreference preference = (ListPreference) findPreference(getString(R.string.bluetooth_sensor_key));
-        String value = PreferencesUtils.getString(this, R.string.bluetooth_sensor_key, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
-        List<String> devicesNameList = new ArrayList<>();
-        List<String> devicesAddressList = new ArrayList<>();
-        BluetoothAdapter bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
-        if (bluetoothAdapter != null) {
-            BluetoothDeviceUtils.populateDeviceLists(bluetoothAdapter, devicesNameList, devicesAddressList);
+        // Used to forward update from ChooseActivityTypeDialogFragment; TODO Could be replaced with LiveData.
+        private ActivityTypePreference.ActivityPreferenceDialog activityPreferenceDialog;
+
+        @Override
+        public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+            setPreferencesFromResource(R.xml.settings, rootKey);
+            updateUnits();
        }

-        // Was the previously configured device unpaired? Then forget it.
-        if (!devicesAddressList.contains(value)) {
-            value = PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT;
-            PreferencesUtils.setString(this, R.string.bluetooth_sensor_key, value);
+        @Override
+        public void onResume() {
+            super.onResume();
+            PreferencesUtils.getSharedPreferences(getActivity()).registerOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
+            updateUI();
        }

-        devicesNameList.add(0, getString(R.string.value_none));
-        devicesAddressList.add(0, PreferencesUtils.BLUETOOTH_SENSOR_DEFAULT);
+        @Override
+        public void onPause() {
+            super.onPause();
+            PreferencesUtils.getSharedPreferences(getActivity()).unregisterOnSharedPreferenceChangeListener(sharedPreferenceChangeListener);
+        }

-        String[] values = devicesAddressList.toArray(new String[0]);
-        preference.setEntryValues(values);
+        private void configFrequencyPreference(int key, boolean metricUnits) {
+            ListPreference preference = findPreference(getString(key));

-        String[] options = devicesNameList.toArray(new String[0]);
-        preference.setEntries(options);
-    }
+            String[] options = StringUtils.getFrequencyOptions(getActivity(), metricUnits);
+            preference.setEntries(options);
+        }

-    private void updateUI() {
-        //TODO Remove the following if recordingTrackId is replaced by direct communication rather than via preferences.
-        boolean isRecording = recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
-        Preference resetPreference = findPreference(getString(R.string.settings_reset_key));
-        resetPreference.setSummary(isRecording ? getString(R.string.settings_not_while_recording) : "");
-        resetPreference.setEnabled(!isRecording);
+        private void configListPreference(int key, int valueArray, boolean metricUnits) {
+            //TODO Can we make values an int array?
+            String[] values = getResources().getStringArray(valueArray);
+            final String[] options = new String[values.length];
+            switch (key) {
+                case R.string.min_recording_interval_key:
+                    PreferenceHelper.setMinRecordingIntervalOptions(getActivity(), options, values);
+                    break;
+                case R.string.recording_distance_interval_key:
+                    PreferenceHelper.setRecordingDistanceIntervalOptions(getActivity(), options, values, metricUnits);
+                    break;
+                case R.string.max_recording_distance_key:
+                    PreferenceHelper.setMaxRecordingDistanceOptions(getActivity(), options, values, metricUnits);
+                    break;
+                case R.string.recording_gps_accuracy_key:
+                    PreferenceHelper.setRecordingGpsAccuracyOptions(getActivity(), options, values, metricUnits);
+                    break;
+                case R.string.auto_resume_track_timeout_key:
+                    PreferenceHelper.setAutoResumeTrackTimeoutOptions(getActivity(), options, values);
+                    break;
+                default:
+                    return;
+            }

-        Preference speedCheckBoxPreference = findPreference(getString(R.string.chart_show_speed_key));
-        speedCheckBoxPreference.setTitle(PreferencesUtils.isReportSpeed(this) ? R.string.stats_speed : R.string.stats_pace);
+            final ListPreference listPreference = findPreference(getString(key));
+            listPreference.setEntries(options);
+        }
+
+        @Override
+        public void onDisplayPreferenceDialog(Preference preference) {
+            DialogFragment dialogFragment = null;
+            if (preference instanceof ResetDialogPreference) {
+                dialogFragment = ResetDialogPreference.ResetPreferenceDialog.newInstance(preference.getKey());
+            } else if (preference instanceof ActivityTypePreference) {
+                activityPreferenceDialog = ActivityTypePreference.ActivityPreferenceDialog.newInstance(preference.getKey());
+                dialogFragment = activityPreferenceDialog;
+            }
+
+            if (dialogFragment != null) {
+                dialogFragment.setTargetFragment(this, 0);
+                dialogFragment.show(getFragmentManager(), getClass().getSimpleName());
+                return;
+            }
+
+            super.onDisplayPreferenceDialog(preference);
+        }
+
+        public void setDefaultActivity(String iconValue) {
+            if (activityPreferenceDialog != null) {
+                activityPreferenceDialog.updateUI(iconValue);
+            }
+        }
+
+        private void updateUI() {
+            final boolean isRecording = PreferencesUtils.isRecording(getActivity());
+            Preference resetPreference = findPreference(getString(R.string.settings_reset_key));
+            resetPreference.setSummary(isRecording ? getString(R.string.settings_not_while_recording) : "");
+            resetPreference.setEnabled(!isRecording);
+
+            Preference speedCheckBoxPreference = findPreference(getString(R.string.chart_show_speed_key));
+            speedCheckBoxPreference.setTitle(PreferencesUtils.isReportSpeed(getActivity()) ? R.string.stats_speed : R.string.stats_pace);
+
+            ListPreference bluetoothPreference = findPreference(getString(R.string.bluetooth_sensor_key));
+            PreferenceHelper.configureBluetoothSensorList(bluetoothPreference);
+        }
+
+        private void updateUnits() {
+            boolean metricUnits = PreferencesUtils.isMetricUnits(getActivity());
+
+            configFrequencyPreference(R.string.voice_frequency_key, metricUnits);
+            configFrequencyPreference(R.string.split_frequency_key, metricUnits);
+            configListPreference(R.string.min_recording_interval_key, R.array.min_recording_interval_values, metricUnits);
+            configListPreference(R.string.recording_distance_interval_key, R.array.recording_distance_interval_values, metricUnits);
+            configListPreference(R.string.max_recording_distance_key, R.array.max_recording_distance_values, metricUnits);
+            configListPreference(R.string.recording_gps_accuracy_key, R.array.recording_gps_accuracy_values, metricUnits);
+            configListPreference(R.string.auto_resume_track_timeout_key, R.array.auto_resume_track_timeout_values, metricUnits);
+            configListPreference(R.string.auto_resume_track_timeout_key, R.array.auto_resume_track_timeout_values, metricUnits);
+
+            final ListPreference statsRatePreferences = findPreference(getString(R.string.stats_rate_key));
+            String[] options = getResources().getStringArray(metricUnits ? R.array.stats_rate_metric_options : R.array.stats_rate_imperial_options);
+            statsRatePreferences.setEntries(options);
+            //TODO This is a hack!!! Need to manually updated the summary as otherwise it will only be updated after scrolling down and up again (bring the object out of view).
+            //Check if this is still needed after upgraded PreferenceFragment.
+            statsRatePreferences.setSummary(statsRatePreferences.getEntry());
+        }
    }
 }
@@ -1,78 +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.settings;
-
-import android.os.Bundle;
-import android.preference.ListPreference;
-import android.preference.Preference;
-import android.preference.Preference.OnPreferenceChangeListener;
-import android.preference.PreferenceActivity;
-
-import de.dennisguse.opentracks.R;
-import de.dennisguse.opentracks.util.PreferencesUtils;
-
-/**
- * An activity for accessing stats settings.
- *
- * @author Jimmy Shih
- */
-public class StatsSettingsActivity extends PreferenceActivity {
-
-    @Override
-    protected void onCreate(Bundle bundle) {
-        super.onCreate(bundle);
-        addPreferencesFromResource(R.xml.settings_statistics);
-
-        configUnitsListPreference();
-        boolean metricUnits = PreferencesUtils.STATS_UNITS_DEFAULT.equals(PreferencesUtils.getString(this, R.string.stats_units_key, ""));
-        configRateListPreference(metricUnits);
-    }
-
-    /**
-     * Configures the preferred units list preference.
-     */
-    private void configUnitsListPreference() {
-        ListPreference listPreference = (ListPreference) findPreference(getString(R.string.stats_units_key));
-        final OnPreferenceChangeListener listener = new OnPreferenceChangeListener() {
-
-            @Override
-            public boolean onPreferenceChange(Preference pref, Object newValue) {
-                boolean metricUnits = PreferencesUtils.STATS_UNITS_DEFAULT.equals(newValue);
-                configRateListPreference(metricUnits);
-                return true;
-            }
-        };
-        listPreference.setOnPreferenceChangeListener(new Preference.OnPreferenceChangeListener() {
-            @Override
-            public boolean onPreferenceChange(Preference pref, Object newValue) {
-                return listener.onPreferenceChange(pref, newValue);
-            }
-        });
-    }
-
-    /**
-     * Configures the preferred rate list preference.
-     *
-     * @param metricUnits true if metric units
-     */
-    private void configRateListPreference(boolean metricUnits) {
-        ListPreference listPreference = (ListPreference) findPreference(getString(R.string.stats_rate_key));
-        String[] options = getResources().getStringArray(metricUnits ? R.array.stats_rate_metric_options : R.array.stats_rate_imperial_options);
-
-        listPreference.setEntries(options);
-    }
-}
@@ -0,0 +1,137 @@
+package de.dennisguse.opentracks.util;
+
+import android.app.Activity;
+import android.app.SearchManager;
+import android.content.ComponentName;
+import android.content.Context;
+import android.util.Log;
+import android.util.SparseBooleanArray;
+import android.view.ActionMode;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.AbsListView;
+import android.widget.ListView;
+
+import androidx.appcompat.widget.SearchView;
+
+import java.util.ArrayList;
+
+import de.dennisguse.opentracks.ContextualActionModeCallback;
+import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.SearchListActivity;
+import de.dennisguse.opentracks.TrackController;
+
+public class ActivityUtils {
+
+    private static final String TAG = ActivityUtils.class.getSimpleName();
+
+    public static void configureListViewContextualMenu(final ListView listView, final ContextualActionModeCallback contextualActionModeCallback) {
+        listView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
+        listView.setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
+
+            @Override
+            public boolean onCreateActionMode(ActionMode mode, Menu menu) {
+                mode.getMenuInflater().inflate(R.menu.list_context_menu, menu);
+                return true;
+            }
+
+            @Override
+            public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
+                contextualActionModeCallback.onPrepare(menu, getCheckedPositions(listView), listView.getCheckedItemIds(), true);
+                return true;
+            }
+
+            @Override
+            public void onDestroyActionMode(ActionMode mode) {
+                // Do nothing
+            }
+
+            @Override
+            public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
+                mode.invalidate();
+            }
+
+            @Override
+            public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
+                if (contextualActionModeCallback.onClick(item.getItemId(), getCheckedPositions(listView), listView.getCheckedItemIds())) {
+                    mode.finish();
+                }
+                return true;
+            }
+
+            /**
+             * Gets the checked positions in a list view.
+             *
+             * @param list the list view
+             */
+            private int[] getCheckedPositions(ListView list) {
+                SparseBooleanArray positions = list.getCheckedItemPositions();
+                ArrayList<Integer> arrayList = new ArrayList<>();
+                for (int i = 0; i < positions.size(); i++) {
+                    int key = positions.keyAt(i);
+                    if (positions.valueAt(i)) {
+                        arrayList.add(key);
+                    }
+                }
+                int[] result = new int[arrayList.size()];
+                for (int i = 0; i < arrayList.size(); i++) {
+                    result[i] = arrayList.get(i);
+                }
+                return result;
+            }
+        });
+    }
+
+    public static void configureSearchWidget(Activity activity, final MenuItem menuItem, final TrackController trackController) {
+        final SearchView searchView = (SearchView) menuItem.getActionView();
+        SearchManager searchManager = (SearchManager) activity.getSystemService(Context.SEARCH_SERVICE);
+        if (searchManager != null) {
+            //NOTE: for some reason activity.getComponentName() did not trigger the SearchListActivity
+            searchView.setSearchableInfo(searchManager.getSearchableInfo(new ComponentName(activity, SearchListActivity.class)));
+        } else {
+            Log.w(TAG, "Could not retrieve SearchManager.");
+        }
+        searchView.setQueryRefinementEnabled(true);
+        searchView.setSubmitButtonEnabled(true);
+        searchView.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {
+
+            @Override
+            public void onFocusChange(View v, boolean hasFocus) {
+                // Hide and show trackController when searchable widget has focus/no focus
+                if (trackController != null) {
+                    if (hasFocus) {
+                        trackController.hide();
+                    } else {
+                        trackController.show();
+                    }
+                }
+            }
+        });
+
+        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
+            @Override
+            public boolean onQueryTextSubmit(String query) {
+                menuItem.collapseActionView();
+                return false;
+            }
+
+            @Override
+            public boolean onQueryTextChange(String newText) {
+                return false;
+            }
+        });
+        searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
+            @Override
+            public boolean onSuggestionSelect(int position) {
+                return false;
+            }
+
+            @Override
+            public boolean onSuggestionClick(int position) {
+                menuItem.collapseActionView();
+                return false;
+            }
+        });
+    }
+}
@@ -19,7 +19,8 @@ package de.dennisguse.opentracks.util;
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
-import android.preference.PreferenceManager;
+
+import androidx.preference.PreferenceManager;

 import de.dennisguse.opentracks.R;

@@ -252,9 +253,16 @@ public class PreferencesUtils {
        return CHART_X_AXIS_DEFAULT.equals(getString(context, R.string.chart_x_axis_key, CHART_X_AXIS_DEFAULT));
    }

+    public static boolean isRecording(Context context) {
+        long recordingTrackId = PreferencesUtils.getLong(context, R.string.recording_track_id_key);
+        return recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    }
+
+    public static boolean isRecording(long recordingTrackId) {
+        return recordingTrackId != PreferencesUtils.RECORDING_TRACK_ID_DEFAULT;
+    }
+
    public static void resetPreferences(Context context, boolean readAgain) {
        PreferenceManager.setDefaultValues(context, R.xml.settings, readAgain);
-        PreferenceManager.setDefaultValues(context, R.xml.settings_recording, readAgain);
-        PreferenceManager.setDefaultValues(context, R.xml.settings_statistics, readAgain);
    }
 }
@@ -0,0 +1,32 @@
+package de.dennisguse.opentracks.util;
+
+import android.content.Context;
+import android.view.MenuItem;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.widget.ShareActionProvider;
+import androidx.core.internal.view.SupportMenuItem;
+import androidx.core.view.MenuItemCompat;
+
+public class ToolbarUtils {
+
+    private ToolbarUtils() {
+    }
+
+    //TODO Compat is not working as the AbsListView.MultiChoiceModeListener; instantiating it manually using the non-compat is a workaround.
+    @Deprecated
+    public static void setupShareActionProvider(@NonNull Context context, @NonNull MenuItem shareMenuItem, @NonNull long[] trackIds) {
+        android.widget.ShareActionProvider shareActionProvider = new android.widget.ShareActionProvider(context);
+        shareActionProvider.setShareIntent(trackIds.length == 0 ? null : IntentUtils.newShareFileIntent(context, trackIds));
+        shareMenuItem.setActionProvider(shareActionProvider);
+    }
+
+    /**
+     * @param shareMenuItem Should be a {@link SupportMenuItem}.
+     */
+    public static void setupShareActionProviderCompat(@NonNull Context context, @NonNull MenuItem shareMenuItem, @NonNull long[] trackIds) {
+        ShareActionProvider shareActionProvider = (ShareActionProvider) MenuItemCompat.getActionProvider(shareMenuItem);
+        shareActionProvider.setShareIntent(trackIds.length == 0 ? null : IntentUtils.newShareFileIntent(context, trackIds));
+        MenuItemCompat.setActionProvider(shareMenuItem, shareActionProvider);
+    }
+}
@@ -62,7 +62,7 @@ public class TrackIconUtils {
    private static final LinkedHashMap<String, Pair<Integer, Integer>> MAP = new LinkedHashMap<>();

    static {
-        //Reflects order in ChooseActivityTypeDialogFragment
+        //Reflects order in ChooseActivityTypeDialogFragmentActivity
        MAP.put(UNKNOWN, new Pair<>(R.string.activity_type_unknown, ACTIVITY_UNKNOWN_LOGO));
        MAP.put(RUN, new Pair<>(R.string.activity_type_running, R.drawable.ic_activity_run_24dp));
        MAP.put(WALK, new Pair<>(R.string.activity_type_walking, R.drawable.ic_activity_walk_24dp));
@@ -16,7 +16,10 @@ limitations under the License.
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
-    android:baselineAligned="false">
+    android:baselineAligned="false"
+    android:orientation="horizontal">
+
+    <include layout="@layout/toolbar" />

    <include layout="@layout/track_controller" />

@@ -4,6 +4,8 @@
    android:layout_height="match_parent"
    android:orientation="vertical">

+    <include layout="@layout/toolbar" />
+
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="match_parent"
@@ -17,6 +17,8 @@ limitations under the License.
    android:layout_width="match_parent"
    android:layout_height="match_parent">

+    <include layout="@layout/toolbar" />
+
    <androidx.viewpager.widget.ViewPager
        android:id="@+id/maker_detail_activity_view_pager"
        android:layout_width="match_parent"
@@ -18,6 +18,8 @@ limitations under the License.
    android:layout_height="match_parent"
    android:orientation="vertical">

+    <include layout="@layout/toolbar" />
+
    <ScrollView style="@style/ScrollView.WithBottomButtons">

        <LinearLayout
@@ -13,9 +13,12 @@ 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.
 -->
-<merge xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <include layout="@layout/toolbar" />

    <ListView
        android:id="@+id/marker_list"
@@ -26,4 +29,4 @@ limitations under the License.
        android:id="@+id/marker_list_empty"
        style="@style/ListEmptyTextView"
        android:text="@string/marker_list_empty_message" />
-</merge>
+</LinearLayout>
@@ -13,9 +13,12 @@ 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.
 -->
-<merge xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <include layout="@layout/toolbar" />

    <ListView
        android:id="@+id/search_list"
@@ -26,4 +29,4 @@ limitations under the License.
        android:id="@+id/search_list_empty"
        style="@style/ListEmptyTextView"
        android:text="@string/search_list_empty_message" />
-</merge>
+</LinearLayout>
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <include layout="@layout/toolbar" />
+
+    <FrameLayout
+        android:id="@+id/settings_fragment"
+        android:layout_width="fill_parent"
+        android:layout_height="wrap_content" />
+
+</LinearLayout>
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/toolbar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="?attr/colorPrimary"
+        android:minHeight="?attr/actionBarSize"
+        app:navigationIcon="@drawable/ic_logo_color_24dp" />
+</merge>
@@ -18,6 +18,8 @@ limitations under the License.
    android:layout_height="match_parent"
    android:orientation="vertical">

+    <include layout="@layout/toolbar" />
+
    <TabHost
        android:id="@+id/tackdetail_tabhost"
        android:layout_width="match_parent"
@@ -18,6 +18,8 @@ limitations under the License.
    android:layout_height="match_parent"
    android:orientation="vertical">

+    <include layout="@layout/toolbar" />
+
    <ScrollView style="@style/ScrollView.WithBottomButtons">

        <LinearLayout
@@ -18,6 +18,8 @@ limitations under the License.
    android:layout_height="match_parent"
    android:orientation="vertical">

+    <include layout="@layout/toolbar" />
+
    <ListView
        android:id="@+id/track_list"
        android:layout_width="match_parent"
@@ -13,30 +13,31 @@ 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.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/list_context_menu_share"
-        android:actionProviderClass="android.widget.ShareActionProvider"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_share" />
+        android:title="@string/menu_share"
+        app:actionProviderClass="androidx.appcompat.widget.ShareActionProvider"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/list_context_menu_show_on_map"
        android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_show_on_map" />
+        android:title="@string/menu_show_on_map"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/list_context_menu_edit"
        android:icon="@drawable/ic_edit_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_edit" />
+        android:title="@string/menu_edit"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/list_context_menu_delete"
        android:icon="@drawable/ic_delete_forever_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_delete" />
+        android:title="@string/menu_delete"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/list_context_menu_select_all"
        android:icon="@drawable/ic_select_all_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_select_all" />
+        android:title="@string/menu_select_all"
+        app:showAsAction="ifRoom" />
 </menu>
@@ -13,20 +13,21 @@ 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.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/marker_detail_show_on_map"
        android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_show_on_map" />
+        android:title="@string/menu_show_on_map"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/marker_detail_edit"
        android:icon="@drawable/ic_edit_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_edit" />
+        android:title="@string/menu_edit"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/marker_detail_delete"
        android:icon="@drawable/ic_delete_forever_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_delete" />
+        android:title="@string/menu_delete"
+        app:showAsAction="ifRoom" />
 </menu>
@@ -13,15 +13,16 @@ 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.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/marker_list_insert_marker"
        android:icon="@drawable/ic_marker_show_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_insert_marker" />
+        android:title="@string/menu_insert_marker"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/marker_list_search"
-        android:actionViewClass="android.widget.SearchView"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_search" />
+        android:title="@string/menu_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="ifRoom" />
 </menu>
@@ -13,29 +13,30 @@ 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.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/track_detail_insert_marker"
        android:icon="@drawable/ic_marker_add_24dp"
        android:orderInCategory="1"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
        android:title="@string/menu_insert_marker" />
    <item
        android:id="@+id/track_detail_insert_photo"
        android:icon="@drawable/ic_camera_24dp"
        android:orderInCategory="2"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
        android:title="@string/menu_insert_photo" />
    <item
        android:id="@+id/track_detail_menu_show_on_map"
        android:icon="@drawable/ic_map_24dp"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
        android:title="@string/menu_show_on_map" />
    <item
        android:id="@+id/track_detail_share"
-        android:actionProviderClass="android.widget.ShareActionProvider"
+        app:actionProviderClass="androidx.appcompat.widget.ShareActionProvider"
        android:orderInCategory="4"
-        android:showAsAction="ifRoom"
+        app:showAsAction="ifRoom"
        android:title="@string/menu_share" />
    <item
        android:id="@+id/track_detail_markers"
@@ -13,27 +13,24 @@ 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.
 -->
-<menu xmlns:android="http://schemas.android.com/apk/res/android">
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
    <item
        android:id="@+id/track_list_search"
-        android:actionViewClass="android.widget.SearchView"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_search" />
+        android:title="@string/menu_search"
+        app:actionViewClass="androidx.appcompat.widget.SearchView"
+        app:showAsAction="ifRoom" />
    <!-- Icon and title is overwritten by TrackListActivity -->
    <item
        android:id="@+id/track_list_start_gps"
        android:icon="@drawable/ic_gps_off_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_start_gps" />
+        android:title="@string/menu_start_gps"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/track_list_markers"
        android:icon="@drawable/ic_marker_show_24dp"
-        android:showAsAction="ifRoom"
-        android:title="@string/menu_markers" />
-    <item
-        android:id="@+id/track_list_aggregated_statistics"
-        android:icon="@drawable/ic_statistics_24dp"
-        android:title="@string/menu_aggregated_statistics" />
+        android:title="@string/menu_markers"
+        app:showAsAction="ifRoom" />
    <item
        android:id="@+id/track_list_delete_all"
        android:icon="@drawable/ic_delete_forever_24dp"
@@ -15,11 +15,6 @@ limitations under the License.
 -->
 <resources xmlns:android="http://schemas.android.com/apk/res/android">

-    <style name="ActionBarStyleCustom" parent="@android:style/Widget.Holo.ActionBar">
-        <!-- Same image as the source except using a grey line instead of a blue line -->
-        <item name="android:background">@drawable/ab_transparent_dark_holo</item>
-    </style>
-
    <style name="BottomButton" parent="@android:style/Widget.Holo.Button.Borderless">
        <!-- Same as BottomButton in values/styles.xml except inheriting from Widget.Holo.Button.Borderles. -->
        <item name="android:layout_height">wrap_content</item>
@@ -15,7 +15,8 @@ limitations under the License.
 -->
 <resources xmlns:android="http://schemas.android.com/apk/res/android">

-    <style name="ThemeCustom" parent="android:Theme.Holo">
+    <style name="ThemeCustom" parent="Theme.AppCompat.NoActionBar">
+        <!-- TODO Cleanup necessary due to change to appcompat -->
        <!-- Auto generated -->
        <item name="android:activatedBackgroundIndicator">@drawable/activated_background_holo_dark
        </item>
@@ -26,10 +27,12 @@ limitations under the License.
        <item name="android:listChoiceIndicatorMultiple">@drawable/btn_check_holo_dark</item>
        <item name="android:listChoiceIndicatorSingle">@drawable/btn_radio_holo_dark</item>
        <item name="android:progressBarStyleHorizontal">@style/ProgressBarCustom</item>
-        <!-- Manually added -->
-        <item name="android:actionBarStyle">@style/ActionBarStyleCustom</item>
-        <item name="android:actionModeBackground">@drawable/custom_action_mode_background</item>
-        <item name="android:alertDialogTheme">@style/CustomAlertDialogTheme</item>
+
+        <!--        <item name="colorPrimary">TODO</item>-->
+        <!--        <item name="colorPrimaryDark">TODO</item>-->
+
+        <item name="android:colorAccent">@color/holo_orange_dark</item>
+        <item name="windowActionModeOverlay">true</item>
    </style>

    <style name="ThemeCustomTransparent" parent="ThemeCustom">
@@ -41,23 +44,4 @@ limitations under the License.
        <item name="android:windowIsFloating">true</item>
        <item name="android:backgroundDimEnabled">false</item>
    </style>
-
-    <style name="CustomAlertDialogTheme" parent="@android:style/Theme.Holo.Dialog">
-        <!-- From auto generated -->
-        <item name="android:activatedBackgroundIndicator">@drawable/activated_background_holo_dark
-        </item>
-        <item name="android:autoCompleteTextViewStyle">@style/AutoCompleteTextViewCustom</item>
-        <item name="android:dropDownSpinnerStyle">@style/SpinnerCustom</item>
-        <item name="android:editTextBackground">@drawable/edit_text_holo_dark</item>
-        <item name="android:listChoiceBackgroundIndicator">@drawable/list_selector_holo_dark</item>
-        <item name="android:listChoiceIndicatorMultiple">@drawable/btn_check_holo_dark</item>
-        <item name="android:listChoiceIndicatorSingle">@drawable/btn_radio_holo_dark</item>
-        <item name="android:progressBarStyleHorizontal">@style/ProgressBarCustom</item>
-        <!-- From Theme.Holo.Dialog.Alert -->
-        <item name="android:textColor">@color/holo_orange_dark</item>
-        <item name="android:windowBackground">@android:color/transparent</item>
-        <item name="android:windowContentOverlay">@null</item>
-        <item name="android:windowMinWidthMajor">@android:dimen/dialog_min_width_major</item>
-        <item name="android:windowMinWidthMinor">@android:dimen/dialog_min_width_minor</item>
-    </style>
 </resources>
@@ -15,7 +15,36 @@ limitations under the License.
 -->
 <PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
    android:title="@string/menu_settings">
-    <PreferenceScreen android:title="@string/track_detail_chart_tab">
+
+    <PreferenceCategory android:title="@string/track_detail_stats_tab">
+        <ListPreference
+            android:defaultValue="@string/stats_units_metric"
+            android:entries="@array/stats_units_options"
+            android:entryValues="@array/stats_units_values"
+            android:key="@string/stats_units_key"
+            android:summary="%s"
+            android:title="@string/settings_stats_units_title" />
+        <ListPreference
+            android:defaultValue="@string/stats_rate_speed"
+            android:entries="@array/stats_rate_metric_options"
+            android:entryValues="@array/stats_rate_values"
+            android:key="@string/stats_rate_key"
+            android:summary="%s"
+            android:title="@string/settings_stats_rate_title" />
+    </PreferenceCategory>
+
+    <PreferenceCategory android:title="@string/settings_show">
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="@string/stats_show_grade_elevation_key"
+            android:title="@string/settings_stats_grade_elevation" />
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="@string/stats_show_coordinate_key"
+            android:title="@string/settings_stats_coordinate" />
+    </PreferenceCategory>
+
+    <PreferenceCategory android:title="@string/track_detail_chart_tab">
        <ListPreference
            android:defaultValue="@string/chart_x_axis_distance"
            android:entries="@array/chart_x_axis_options"
@@ -23,57 +52,97 @@ limitations under the License.
            android:key="@string/chart_x_axis_key"
            android:summary="%s"
            android:title="@string/settings_chart_x_axis" />
-        <PreferenceCategory android:title="@string/settings_show">
-            <CheckBoxPreference
-                android:defaultValue="true"
-                android:key="@string/chart_show_elevation_key"
-                android:title="@string/stats_elevation" />
-            <CheckBoxPreference
-                android:defaultValue="true"
-                android:key="@string/chart_show_speed_key" />
-            <CheckBoxPreference
-                android:defaultValue="true"
-                android:key="@string/chart_show_heart_rate_key"
-                android:title="@string/sensor_state_heart_rate" />
-            <!--
-            TODO: Sensors are not implemented.
-                <CheckBoxPreference
-                  android:defaultValue="true"
-                  android:key="@string/chart_show_cadence_key"
-                  android:title="@string/sensor_state_cadence" />
-                <CheckBoxPreference
-                  android:defaultValue="true"
-                  android:key="@string/chart_show_power_key"
-                  android:title="@string/sensor_state_power" />
-            -->
-        </PreferenceCategory>
-    </PreferenceScreen>
+        <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="@string/chart_show_elevation_key"
+            android:title="@string/stats_elevation" />
+        <!-- title set in code -->
+        <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="@string/chart_show_speed_key" />
+        <CheckBoxPreference
+            android:defaultValue="true"
+            android:key="@string/chart_show_heart_rate_key"
+            android:title="@string/sensor_state_heart_rate" />
+    </PreferenceCategory>

-    <Preference
-        android:key="@string/settings_stats_key"
-        android:persistent="false"
-        android:title="@string/track_detail_stats_tab" />
-    <Preference
-        android:key="@string/settings_recording_key"
-        android:persistent="false"
-        android:title="@string/settings_recording" />
+    <PreferenceCategory android:title="@string/settings_recording">
+        <CheckBoxPreference
+            android:defaultValue="false"
+            android:key="@string/trackdetail_show_on_lockscreen_while_recording_key"
+            android:summary="@string/settings_recording_show_on_lockscreen_while_recording_summary"
+            android:title="@string/settings_recording_show_on_lockscreen_while_recording_title" />
+        <ListPreference
+            android:defaultValue="0"
+            android:entryValues="@array/frequency_values"
+            android:key="@string/voice_frequency_key"
+            android:summary="%s"
+            android:title="@string/menu_voice_frequency" />
+        <ListPreference
+            android:defaultValue="0"
+            android:entryValues="@array/frequency_values"
+            android:key="@string/split_frequency_key"
+            android:summary="%s"
+            android:title="@string/menu_split_frequency" />
+        <ListPreference
+            android:defaultValue="@string/settings_recording_track_name_date_iso_8601_value"
+            android:entries="@array/track_name_options"
+            android:entryValues="@array/track_name_values"
+            android:key="@string/track_name_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_track_name_title" />
+        <ListPreference
+            android:defaultValue="0"
+            android:entryValues="@array/min_recording_interval_values"
+            android:key="@string/min_recording_interval_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_min_recording_interval_title" />
+        <ListPreference
+            android:defaultValue="10"
+            android:entryValues="@array/recording_distance_interval_values"
+            android:key="@string/recording_distance_interval_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_min_recording_distance_title" />
+        <ListPreference
+            android:defaultValue="200"
+            android:entryValues="@array/max_recording_distance_values"
+            android:key="@string/max_recording_distance_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_max_recording_distance_title" />
+        <ListPreference
+            android:defaultValue="50"
+            android:entryValues="@array/recording_gps_accuracy_values"
+            android:key="@string/recording_gps_accuracy_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_min_required_accuracy_title" />
+        <ListPreference
+            android:defaultValue="10"
+            android:entries="@array/auto_resume_track_timeout_values"
+            android:entryValues="@array/auto_resume_track_timeout_values"
+            android:key="@string/auto_resume_track_timeout_key"
+            android:summary="%s"
+            android:title="@string/settings_recording_auto_resume_track_timeout_title" />
+        <de.dennisguse.opentracks.settings.ActivityTypePreference
+            android:defaultValue="@string/activity_type_running"
+            android:key="@string/default_activity_key"
+            android:title="@string/settings_recording_default_activity_title" />
+    </PreferenceCategory>

-    <PreferenceScreen
+    <PreferenceCategory
        android:title="@string/settings_sensor">
-        <PreferenceCategory
-            android:title="@string/settings_sensor_bluetooth">
-            <Preference
-                android:key="@string/settings_sensor_bluetooth_pairing_key"
-                android:persistent="false"
-                android:summary="@string/settings_sensor_bluetooth_pairing_summary"
-                android:title="@string/settings_sensor_bluetooth_pairing" />
-            <ListPreference
-                android:defaultValue="@string/sensor_type_value_none"
-                android:key="@string/bluetooth_sensor_key"
-                android:summary="%s"
-                android:title="@string/settings_sensor_bluetooth_sensor" />
-        </PreferenceCategory>
-    </PreferenceScreen>
+        <ListPreference
+            android:defaultValue="@string/sensor_type_value_none"
+            android:key="@string/bluetooth_sensor_key"
+            android:summary="%s"
+            android:title="@string/settings_sensor_bluetooth_sensor" />
+        <Preference
+            android:key="@string/settings_sensor_bluetooth_pairing_key"
+            android:persistent="false"
+            android:summary="@string/settings_sensor_bluetooth_pairing_summary"
+            android:title="@string/settings_sensor_bluetooth_pairing">
+            <intent android:action="android.settings.BLUETOOTH_SETTINGS" />
+        </Preference>
+    </PreferenceCategory>

    <PreferenceCategory android:title="@string/generic_tracks">
        <Preference android:title="@string/menu_import_all">
@@ -90,14 +159,15 @@ limitations under the License.

    <PreferenceCategory android:title="@string/settings_reset">
        <de.dennisguse.opentracks.settings.ResetDialogPreference
-            android:dialogMessage="@string/settings_reset_confirm_message"
            android:dialogTitle="@string/settings_reset_confirm_title"
+            android:dialogMessage="@string/settings_reset_confirm_message"
            android:key="@string/settings_reset_key"
            android:negativeButtonText="@string/generic_cancel"
            android:persistent="false"
            android:positiveButtonText="@string/generic_yes"
            android:title="@string/settings_reset" />
    </PreferenceCategory>
+
    <PreferenceCategory android:title="@string/about_preference_title">
        <Preference android:title="@string/about_preference_title">
            <intent
@@ -1,78 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-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.
-->
-
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    android:title="@string/settings_recording">
-    <ListPreference
-        android:defaultValue="0"
-        android:entryValues="@array/frequency_values"
-        android:key="@string/voice_frequency_key"
-        android:summary="%s"
-        android:title="@string/menu_voice_frequency" />
-    <ListPreference
-        android:defaultValue="0"
-        android:entryValues="@array/frequency_values"
-        android:key="@string/split_frequency_key"
-        android:summary="%s"
-        android:title="@string/menu_split_frequency" />
-    <ListPreference
-        android:defaultValue="@string/settings_recording_track_name_date_iso_8601_value"
-        android:entries="@array/track_name_options"
-        android:entryValues="@array/track_name_values"
-        android:key="@string/track_name_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_track_name_title" />
-    <ListPreference
-        android:defaultValue="0"
-        android:entryValues="@array/min_recording_interval_values"
-        android:key="@string/min_recording_interval_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_min_recording_interval_title" />
-    <ListPreference
-        android:defaultValue="10"
-        android:entryValues="@array/recording_distance_interval_values"
-        android:key="@string/recording_distance_interval_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_min_recording_distance_title" />
-    <ListPreference
-        android:defaultValue="200"
-        android:entryValues="@array/max_recording_distance_values"
-        android:key="@string/max_recording_distance_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_max_recording_distance_title" />
-    <ListPreference
-        android:defaultValue="50"
-        android:entryValues="@array/recording_gps_accuracy_values"
-        android:key="@string/recording_gps_accuracy_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_min_required_accuracy_title" />
-    <ListPreference
-        android:defaultValue="10"
-        android:entryValues="@array/auto_resume_track_timeout_values"
-        android:key="@string/auto_resume_track_timeout_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_auto_resume_track_timeout_title" />
-    <CheckBoxPreference
-        android:defaultValue="false"
-        android:key="@string/trackdetail_show_on_lockscreen_while_recording_key"
-        android:summary="@string/settings_recording_show_on_lockscreen_while_recording_summary"
-        android:title="@string/settings_recording_show_on_lockscreen_while_recording_title" />
-    <de.dennisguse.opentracks.settings.ActivityTypePreference
-        android:defaultValue="@string/activity_type_running"
-        android:key="@string/default_activity_key"
-        android:summary="%s"
-        android:title="@string/settings_recording_default_activity_title" />
-</PreferenceScreen>
@@ -1,42 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?><!--
-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.
-->
-<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"
-    android:title="@string/track_detail_stats_tab">
-    <ListPreference
-        android:defaultValue="@string/stats_units_metric"
-        android:entries="@array/stats_units_options"
-        android:entryValues="@array/stats_units_values"
-        android:key="@string/stats_units_key"
-        android:summary="%s"
-        android:title="@string/settings_stats_units_title" />
-    <ListPreference
-        android:defaultValue="@string/stats_rate_speed"
-        android:entries="@array/stats_rate_metric_options"
-        android:entryValues="@array/stats_rate_values"
-        android:key="@string/stats_rate_key"
-        android:summary="%s"
-        android:title="@string/settings_stats_rate_title" />
-    <PreferenceCategory android:title="@string/settings_show">
-        <CheckBoxPreference
-            android:defaultValue="false"
-            android:key="@string/stats_show_grade_elevation_key"
-            android:title="@string/settings_stats_grade_elevation" />
-        <CheckBoxPreference
-            android:defaultValue="false"
-            android:key="@string/stats_show_coordinate_key"
-            android:title="@string/settings_stats_coordinate" />
-    </PreferenceCategory>
-</PreferenceScreen>
Author	SHA1	Message	Date
Dennis Guse	9bd4ba489c	Release: v3.2.2	2019-10-21 23:00:13 +02:00
Dennis Guse	dd55b50dad	Re-added actionbar (actually toolbar) to SettingsActivity.	2019-10-21 22:54:23 +02:00
Dennis Guse	1719d21a5b	Bugfix: export now really includes sensor data (as double) and import is done as float.	2019-10-21 22:34:33 +02:00
Dennis Guse	75ef8d99d4	SensorDataSet: data unavailable is now NaN.	2019-10-21 22:34:28 +02:00
Dennis Guse	ae06fd1680	Bugfix: export sensor data if available and allowed.	2019-10-20 18:39:31 +02:00
Dennis Guse	2b03f7dea8	Use LinearLayout for SearchActivity (show toolbar correctly).	2019-10-20 17:05:09 +02:00
Dennis Guse	7591b012b4	Extracted ShareActionProvider setup code into a separate class.	2019-10-20 16:55:28 +02:00
Dennis Guse	0e089f49f3	Re-added application logo to material design toolbar.	2019-10-19 12:27:11 +02:00
Dennis Guse	5ad1856b13	Removed context menu from ListActivities.	2019-10-17 21:32:55 +02:00
Dennis Guse	965dbbe829	Removed custom action bar style.	2019-10-17 21:26:31 +02:00
Dennis Guse	262c9886df	Removed aggregated stats activity.	2019-10-17 21:22:07 +02:00
Dennis Guse	ac5a9ea65d	Use Androidx compat's toolbar instead of actionbars. ListView's multiselect still uses actionbar.	2019-10-17 21:19:14 +02:00
Dennis Guse	ed9b4c8f3d	Add workaround for Compat's ShareActionProvider, which is not available when inflating in a AbsListView.MultiChoiceModeListener.	2019-10-17 18:33:45 +02:00
Dennis Guse	209aa6a8a5	Hide share action from SearchActivity as it is not (yet) functional.	2019-10-17 07:58:11 +02:00
Dennis Guse	81ee6ac1fa	Do not use custom style for AlertDialogs, so PreferenceDialogs and AlertDialogs look the same.	2019-10-17 06:38:05 +02:00
Dennis Guse	024dd603cb	Migration to Androidx PreferenceCompat.	2019-10-17 06:00:47 +02:00
Dennis Guse	50654c6baf	Release v3.2.1	2019-10-15 18:36:40 +02:00
Dennis Guse	8c9bf60fc6	Update Settings if the units (metric/imperial) are changed.	2019-10-15 17:29:59 +02:00
Dennis Guse	a83eb0b983	Added de-DE description.	2019-10-13 12:19:27 +02:00
Dennis Guse	ab3cbfea0f	Metadata: adjust to fastlane layout.	2019-10-13 12:19:27 +02:00
Dennis Guse	c93e5ca1a6	Settings: moved to Androidx Compat and use one screen only.	2019-10-12 18:00:51 +02:00
Dennis Guse	c2841092da	Settings: moved setup into helper.	2019-09-19 22:30:28 +02:00
Dennis Guse	8b11e1d611	DialogFragments: do not save state.	2019-09-19 22:30:28 +02:00
Dennis Guse	6375a851b2	Moved ChooseActivityTypeDialog to be a real DialogFragment. Note: This breaks RecordingsSettingsActivity.	2019-09-19 22:28:04 +02:00
				`@@ -0,0 +1 @@`
				`Open Tracks – ein GPS-Tracker, der deine Daten für sich behält.`