Merge pull request #1318 from OpenTracksApp/exportOne#448

Export all tracks into one file

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

@@ -208,7 +208,7 @@ public class ExportImportTest {
 
         // when
         // 1. export
-        trackExporter.writeTrack(track, context.getContentResolver().openOutputStream(tmpFileUri));
+        trackExporter.writeTrack(List.of(track), context.getContentResolver().openOutputStream(tmpFileUri));
         contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
@@ -290,7 +290,7 @@ public class ExportImportTest {
         TrackExporter trackExporter = TrackFileFormat.KML_WITH_TRACKDETAIL_AND_SENSORDATA.createTrackExporter(context, contentProviderUtils);
 
         // when
-        trackExporter.writeTrack(track, context.getContentResolver().openOutputStream(tmpFileUri));
+        trackExporter.writeTrack(List.of(track), context.getContentResolver().openOutputStream(tmpFileUri));
 
         // 2. import
         InputStream inputStream = context.getContentResolver().openInputStream(tmpFileUri);
@@ -314,7 +314,7 @@ public class ExportImportTest {
 
         // when
         // 1. export
-        trackExporter.writeTrack(track, context.getContentResolver().openOutputStream(tmpFileUri));
+        trackExporter.writeTrack(List.of(track), context.getContentResolver().openOutputStream(tmpFileUri));
         contentProviderUtils.deleteTrack(context, trackId);
 
         // 2. import
@@ -432,7 +432,7 @@ public class ExportImportTest {
 
         // when
         // 1. export
-        trackExporter.writeTrack(track, context.getContentResolver().openOutputStream(tmpFileUri));
+        trackExporter.writeTrack(List.of(track), context.getContentResolver().openOutputStream(tmpFileUri));
 
         // 2. import
         InputStream inputStream = context.getContentResolver().openInputStream(tmpFileUri);
@@ -457,7 +457,7 @@ public class ExportImportTest {
 
         // when
         // 1. export
-        trackExporter.writeTrack(track, context.getContentResolver().openOutputStream(tmpFileUri));
+        trackExporter.writeTrack(List.of(track), context.getContentResolver().openOutputStream(tmpFileUri));
         contentProviderUtils.deleteTrack(context, trackId);
 
         // then

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

@@ -232,7 +232,7 @@ public class GPXTrackImporterTest {
         Track importedTrack = contentProviderUtils.getTrack(importTrackId);
 
         TrackExporter trackExporter = TrackFileFormat.GPX.createTrackExporter(context, contentProviderUtils);
-        trackExporter.writeTrack(importedTrack, outputStream);
+        trackExporter.writeTrack(List.of(importedTrack), outputStream);
 
         // then
         String expected = new BufferedReader(

src/main/AndroidManifest.xml

@@ -349,6 +349,7 @@ limitations under the License.
         <activity android:name=".ui.aggregatedStatistics.AggregatedStatisticsActivity" />
 
         <activity android:name=".io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserActivity" />
+        <activity android:name=".io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserOneFileActivity" />
         <activity android:name=".io.file.importer.DirectoryChooserActivity$DefaultTrackExportDirectoryChooserActivity" />
 
         <activity android:name=".io.file.exporter.ExportActivity" />

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

@@ -213,7 +213,7 @@ public class ShareContentProvider extends CustomContentProvider {
         PipeDataWriter<String> pipeDataWriter = (output, uri1, mimeType, opts, args) -> {
             try (FileOutputStream fileOutputStream = new FileOutputStream(output.getFileDescriptor())) {
                 // TODO handle failure (i.e., do not export an empty file)
-                trackExporter.writeTrack(tracks.toArray(new Track[0]), fileOutputStream);
+                trackExporter.writeTrack(tracks, fileOutputStream);
             } catch (IOException e) {
                 Log.w(TAG, "there occurred an error while sharing a file: " + e);
             }

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

@@ -29,6 +29,10 @@ public class TrackFilenameGenerator {
                 .collect(Collectors.joining(", "));
     }
 
+    public static String format(@NonNull String name, @NonNull TrackFileFormat trackFileFormat) {
+        return FileUtils.sanitizeFileName(name + "." + trackFileFormat.getExtension());
+    }
+
     private final String template;
 
     public TrackFilenameGenerator(@NonNull String template) {
@@ -44,7 +48,7 @@ public class TrackFilenameGenerator {
         values.put(STARTTIME_TIME_KEY, track.getStartTime().toLocalTime().toString());
         values.put(STARTTIME_DATE_KEY, track.getStartTime().toLocalDate().toString());
 
-        return FileUtils.sanitizeFileName(format(template, values)) + "." + trackFileFormat.getExtension();
+        return format(format(template, values), trackFileFormat);
     }
 
     private static String format(String template, Map<String, String> values) {
@@ -77,10 +81,6 @@ public class TrackFilenameGenerator {
         return String.format(templateCompiled, valueList.toArray());
     }
 
-    public String getTemplate() {
-        return template;
-    }
-
     public boolean isValid() {
         try {
             getExample();

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

@@ -23,8 +23,6 @@ import androidx.annotation.NonNull;
 import java.io.OutputStream;
 import java.io.PrintWriter;
 import java.text.NumberFormat;
-import java.util.Arrays;
-import java.util.Collections;
 import java.util.List;
 import java.util.Locale;
 import java.util.function.Function;
@@ -87,15 +85,23 @@ public class CSVTrackExporter implements TrackExporter {
     }
 
     @Override
-    public boolean writeTrack(Track track, @NonNull OutputStream outputStream) {
+    public boolean writeTrack(@NonNull List<Track> tracks, @NonNull OutputStream outputStream) {
-        return writeTrack(new Track[]{track}, outputStream);
+        List<Column> columns = List.of(
-    }
+                new Column("time", null),
+                new Column("trackpoint_type", t -> quote(t.getType().name())),
+                new Column("latitude", t -> t.hasLocation() ? COORDINATE_FORMAT.format(t.getLatitude()) : ""),
+                new Column("longitude", t -> t.hasLocation() ? COORDINATE_FORMAT.format(t.getLongitude()) : ""),
+                new Column("altitude", t -> t.hasAltitude() ? COORDINATE_FORMAT.format(t.getAltitude().toM()) : ""),
+                new Column("accuracy_horizontal", t -> t.hasHorizontalAccuracy() ? DISTANCE_FORMAT.format(t.getHorizontalAccuracy().toM()) : ""),
+                new Column("accuracy_vertical", t -> t.hasVerticalAccuracy() ? DISTANCE_FORMAT.format(t.getVerticalAccuracy().toM()) : ""),
 
-    @Override
+                new Column("speed", t -> t.hasSpeed() ? SPEED_FORMAT.format(t.getSpeed().toKMH()) : ""),
-    public boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream) {
+                new Column("altitude_gain", t -> t.hasAltitudeGain() ? DISTANCE_FORMAT.format(t.getAltitudeGain()) : ""),
-        List<Column> columns = Collections.unmodifiableList(Arrays.asList(new Column("time", null), new Column("trackpoint_type", t -> quote(t.getType().name())), new Column("latitude", t -> t.hasLocation() ? COORDINATE_FORMAT.format(t.getLatitude()) : ""), new Column("longitude", t -> t.hasLocation() ? COORDINATE_FORMAT.format(t.getLongitude()) : ""), new Column("altitude", t -> t.hasAltitude() ? COORDINATE_FORMAT.format(t.getAltitude().toM()) : ""), new Column("accuracy_horizontal", t -> t.hasHorizontalAccuracy() ? DISTANCE_FORMAT.format(t.getHorizontalAccuracy().toM()) : ""), new Column("accuracy_vertical", t -> t.hasVerticalAccuracy() ? DISTANCE_FORMAT.format(t.getVerticalAccuracy().toM()) : ""),
+                new Column("altitude_loss", t -> t.hasAltitudeLoss() ? DISTANCE_FORMAT.format(t.getAltitudeLoss()) : ""),
-
+                new Column("sensor_distance", t -> t.hasSensorDistance() ? DISTANCE_FORMAT.format(t.getSensorDistance().toM()) : ""),
-                new Column("speed", t -> t.hasSpeed() ? SPEED_FORMAT.format(t.getSpeed().toKMH()) : ""), new Column("altitude_gain", t -> t.hasAltitudeGain() ? DISTANCE_FORMAT.format(t.getAltitudeGain()) : ""), new Column("altitude_loss", t -> t.hasAltitudeLoss() ? DISTANCE_FORMAT.format(t.getAltitudeLoss()) : ""), new Column("sensor_distance", t -> t.hasSensorDistance() ? DISTANCE_FORMAT.format(t.getSensorDistance().toM()) : ""), new Column("heartrate", t -> t.hasHeartRate() ? HEARTRATE_FORMAT.format(t.getHeartRate().getBPM()) : ""), new Column("cadence", t -> t.hasCadence() ? CADENCE_FORMAT.format(t.getCadence().getRPM()) : ""), new Column("power", t -> t.hasPower() ? ALTITUDE_FORMAT.format(t.getPower().getW()) : "")));
+                new Column("heartrate", t -> t.hasHeartRate() ? HEARTRATE_FORMAT.format(t.getHeartRate().getBPM()) : ""),
+                new Column("cadence", t -> t.hasCadence() ? CADENCE_FORMAT.format(t.getCadence().getRPM()) : ""),
+                new Column("power", t -> t.hasPower() ? ALTITUDE_FORMAT.format(t.getPower().getW()) : ""));
 
         try {
             prepare(outputStream);

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

@@ -16,7 +16,6 @@
 
 package de.dennisguse.opentracks.io.file.exporter;
 
-import android.database.Cursor;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Handler;
@@ -24,6 +23,7 @@ import android.view.View;
 import android.widget.Toast;
 
 import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
 import androidx.core.content.ContextCompat;
 import androidx.documentfile.provider.DocumentFile;
 import androidx.fragment.app.FragmentActivity;
@@ -31,14 +31,15 @@ import androidx.fragment.app.FragmentActivity;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.concurrent.LinkedBlockingQueue;
+import java.util.stream.Collectors;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.data.ContentProviderUtils;
 import de.dennisguse.opentracks.data.models.Track;
-import de.dennisguse.opentracks.data.tables.TracksColumns;
 import de.dennisguse.opentracks.databinding.ExportActivityBinding;
 import de.dennisguse.opentracks.io.file.ErrorListDialog;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.io.file.TrackFilenameGenerator;
 import de.dennisguse.opentracks.settings.PreferencesUtils;
 import de.dennisguse.opentracks.util.ExportUtils;
 import de.dennisguse.opentracks.util.FileUtils;
@@ -47,12 +48,20 @@ import de.dennisguse.opentracks.util.FileUtils;
  * An activity for saving tracks to the external storage.
  *
  * @author Rodrigo Damazio
+ * TODO: This class needs some refactoring.
+ * * It pushes each export job (usually one Track) for export; although export could be run in parallel.
+ *   Also this requires that the ExportActivity stays in foreground, so the user has to activily wait.
+ *   It would be better to let the ExportService handle this and let it report progress / conflicts to ExportActivity
+ * * File name conflicts are checked in this class instead of the ExportService.
+ *    So, for this check actually a different file name might be used than in the ExportService.
+ * * Saved state as an object instead of individual values.
  */
 public class ExportActivity extends FragmentActivity implements ExportServiceResultReceiver.Receiver {
 
     private static final String TAG = ExportActivity.class.getSimpleName();
 
     public static final String EXTRA_DIRECTORY_URI_KEY = "directory_uri";
+    public static final String EXTRA_ONE_FILE_KEY = "one_file";
     public static final String EXTRA_TRACKFILEFORMAT_KEY = "trackfileformat";
 
     private static final String BUNDLE_AUTO_CONFLICT = "auto_conflict";
@@ -64,9 +73,13 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
     private static final String BUNDLE_DIRECTORY_FILES = "track_directory_files";
     private static final String BUNDLE_TRACK_ERRORS = "track_errors";
 
-    private static final int CONFLICT_NONE = 0;
+    private static final String BUNDLE_EXPORT_TASKS = "export_tasks";
-    private static final int CONFLICT_OVERWRITE = 1;
+
-    private static final int CONFLICT_SKIP = 2;
+    private enum ConflictResolutionStrategy {
+        CONFLICT_NONE,
+        CONFLICT_OVERWRITE,
+        CONFLICT_SKIP;
+    }
 
     private TrackFileFormat trackFileFormat;
     private Uri directoryUri;
@@ -87,12 +100,12 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
 
     private ArrayList<String> trackErrors = new ArrayList<>();
 
-    private int autoConflict;
+    private ConflictResolutionStrategy autoConflict;
 
     private ContentProviderUtils contentProviderUtils;
 
     // List of tracks to be exported.
-    private final ArrayList<Track> tracks = new ArrayList<>();
+    private ArrayList<ExportTask> exportTasks;
 
     private final LinkedBlockingQueue<PendingConflict> conflictsQueue = new LinkedBlockingQueue<>();
     private final Handler conflictsHandler = new Handler();
@@ -100,34 +113,36 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
     private final Runnable conflictsRunnable = new Runnable() {
         @Override
         public void run() {
-            if (conflictsQueue.size() > 0) {
+            if (conflictsQueue.isEmpty()) {
-                PendingConflict conflict = conflictsQueue.peek();
+                return;
-                if (conflict.resolve()) {
-                    conflictsQueue.remove(conflict);
-                    if (!conflictsQueue.isEmpty()) {
-                        conflictsHandler.post(conflictsRunnable);
-                    }
-                    return;
-                }
-
-                viewBinding.exportProgressLeftButton.setOnClickListener((view) -> {
-                    setConflictVisibility(View.GONE);
-                    conflict.skip();
-                    conflictsQueue.remove(conflict);
-                    if (!conflictsQueue.isEmpty()) {
-                        conflictsHandler.post(conflictsRunnable);
-                    }
-                });
-
-                viewBinding.exportProgressRightButton.setOnClickListener((view) -> {
-                    setConflictVisibility(View.GONE);
-                    conflict.overwrite();
-                    conflictsQueue.remove(conflict);
-                    if (!conflictsQueue.isEmpty()) {
-                        conflictsHandler.post(conflictsRunnable);
-                    }
-                });
             }
+
+            PendingConflict conflict = conflictsQueue.peek();
+            if (conflict.resolve()) {
+                conflictsQueue.remove(conflict);
+                if (!conflictsQueue.isEmpty()) {
+                    conflictsHandler.post(conflictsRunnable);
+                }
+                return;
+            }
+
+            viewBinding.exportProgressLeftButton.setOnClickListener((view) -> {
+                setConflictVisibility(View.GONE);
+                conflict.skip();
+                conflictsQueue.remove(conflict);
+                if (!conflictsQueue.isEmpty()) {
+                    conflictsHandler.post(conflictsRunnable);
+                }
+            });
+
+            viewBinding.exportProgressRightButton.setOnClickListener((view) -> {
+                setConflictVisibility(View.GONE);
+                conflict.overwrite();
+                conflictsQueue.remove(conflict);
+                if (!conflictsQueue.isEmpty()) {
+                    conflictsHandler.post(conflictsRunnable);
+                }
+            });
         }
     };
 
@@ -139,6 +154,7 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
 
         directoryUri = getIntent().getParcelableExtra(EXTRA_DIRECTORY_URI_KEY);
         trackFileFormat = (TrackFileFormat) getIntent().getSerializableExtra(EXTRA_TRACKFILEFORMAT_KEY);
+        boolean allInOneFile = getIntent().getBooleanExtra(EXTRA_ONE_FILE_KEY, false);
 
         contentProviderUtils = new ContentProviderUtils(this);
 
@@ -148,14 +164,17 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
         resultReceiver = new ExportServiceResultReceiver(new Handler(), this);
 
         if (savedInstanceState == null) {
-            autoConflict = CONFLICT_NONE;
+            autoConflict = ConflictResolutionStrategy.CONFLICT_NONE;
             setProgress();
             new Thread(() -> {
                 directoryFiles = ExportUtils.getAllFiles(ExportActivity.this, documentFile.getUri());
-                runOnUiThread(() -> initExport(0));
+                runOnUiThread(() -> {
+                    createExportTasks(allInOneFile);
+                    nextExport(null);
+                });
             }).start();
         } else {
-            autoConflict = savedInstanceState.getInt(BUNDLE_AUTO_CONFLICT);
+            autoConflict = ConflictResolutionStrategy.valueOf(savedInstanceState.getString(BUNDLE_AUTO_CONFLICT));
             trackExportSuccessCount = savedInstanceState.getInt(BUNDLE_SUCCESS_COUNT);
             trackExportErrorCount = savedInstanceState.getInt(BUNDLE_ERROR_COUNT);
             trackExportOverwrittenCount = savedInstanceState.getInt(BUNDLE_OVERWRITTEN_COUNT);
@@ -163,9 +182,9 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
             trackExportTotalCount = savedInstanceState.getInt(BUNDLE_TOTAL_COUNT);
             directoryFiles = savedInstanceState.getStringArrayList(BUNDLE_DIRECTORY_FILES);
             trackErrors = savedInstanceState.getStringArrayList(BUNDLE_TRACK_ERRORS);
-
+            exportTasks = new ArrayList<>(savedInstanceState.getParcelableArrayList(BUNDLE_EXPORT_TASKS));
             setProgress();
-            initExport(getTotalDone());
+            nextExport(null);
         }
 
         viewBinding.bottomAppBarLayout.bottomAppBarTitle.setText(getString(R.string.export_progress_message, directoryDisplayName));
@@ -175,7 +194,7 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
     @Override
     protected void onSaveInstanceState(@NonNull Bundle outState) {
         super.onSaveInstanceState(outState);
-        outState.putInt(BUNDLE_AUTO_CONFLICT, autoConflict);
+        outState.putString(BUNDLE_AUTO_CONFLICT, autoConflict.name());
         outState.putInt(BUNDLE_SUCCESS_COUNT, trackExportSuccessCount);
         outState.putInt(BUNDLE_ERROR_COUNT, trackExportErrorCount);
         outState.putInt(BUNDLE_OVERWRITTEN_COUNT, trackExportOverwrittenCount);
@@ -183,13 +202,14 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
         outState.putInt(BUNDLE_TOTAL_COUNT, trackExportTotalCount);
         outState.putStringArrayList(BUNDLE_DIRECTORY_FILES, (ArrayList<String>) directoryFiles);
         outState.putStringArrayList(BUNDLE_TRACK_ERRORS, trackErrors);
+        outState.putParcelableArrayList(BUNDLE_EXPORT_TASKS, exportTasks);
     }
 
     @Override
     protected void onDestroy() {
         super.onDestroy();
         conflictsQueue.clear();
-        tracks.clear();
+        exportTasks.clear();
     }
 
     @Override
@@ -202,57 +222,50 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
         this.doubleBackToCancel = true;
         Toast.makeText(this, getString(R.string.generic_click_twice_cancel), Toast.LENGTH_SHORT).show();
 
-        new Handler().postDelayed(() -> doubleBackToCancel=false, 2000);
+        new Handler().postDelayed(() -> doubleBackToCancel = false, 2000);
     }
 
-    private void initExport(int from) {
+    private void createExportTasks(boolean allInOneFile) {
-        try (Cursor cursor = contentProviderUtils.getTrackCursor(null, null, TracksColumns._ID)) {
+        List<Track> tracks = contentProviderUtils.getTracks();
-            if (cursor == null) {
+        exportTasks = new ArrayList<>();
-                onExportEnded();
+        if (allInOneFile) {
-                return;
+            String filename = "OpenTracks-Backup";
-            }
+            exportTasks.add(new ExportTask(filename, trackFileFormat, tracks.stream().map(Track::getId).collect(Collectors.toList())));
-
+        } else {
-            trackExportTotalCount = cursor.getCount();
+            exportTasks.addAll(tracks.stream().map(it -> new ExportTask(null, trackFileFormat, List.of(it.getId()))).collect(Collectors.toList()));
-            viewBinding.exportProgressTotal.setText("" + trackExportTotalCount);
-            for (int i = from; i < trackExportTotalCount; i++) {
-                cursor.moveToPosition(i);
-                Track track = ContentProviderUtils.createTrack(cursor);
-                tracks.add(track);
-            }
-
-            if (!tracks.isEmpty()) {
-                export(tracks.get(0));
-            } else {
-                onExportEnded();
-            }
         }
+        trackExportTotalCount = exportTasks.size();
     }
 
     /**
      * Enqueue track identified by UUID to be exported if not exported already or there is a conflict resolution.
-     *
-     * @param track              Track object.
-     * @param conflictResolution conflict resolution to be applied if needed.
      */
-    private void export(Track track, int conflictResolution) {
+    private void export(ExportTask exportTask, ConflictResolutionStrategy conflictResolution) {
-        boolean fileExists = exportFileExists(track);
+        boolean fileExists = exportFileExists(exportTask);
 
-        if (fileExists && conflictResolution == CONFLICT_NONE) {
+        if (fileExists && conflictResolution == ConflictResolutionStrategy.CONFLICT_NONE) {
-            conflict(track);
+            conflict(exportTask);
-        } else if (fileExists && conflictResolution == CONFLICT_SKIP) {
+        } else if (fileExists && conflictResolution == ConflictResolutionStrategy.CONFLICT_SKIP) {
             trackExportSkippedCount++;
-            onExportCompleted(track);
+            nextExport(exportTask);
         } else {
-            ExportService.enqueue(this, resultReceiver, track.getId(), trackFileFormat, directoryUri);
+            ExportService.enqueue(this, resultReceiver, exportTask, directoryUri);
         }
     }
 
-    private void export(Track track) {
+    private void export(ExportTask exportTask) {
-        export(track, autoConflict);
+        export(exportTask, autoConflict);
     }
 
-    private boolean exportFileExists(Track track) {
+    @Deprecated //TODO Check should be done in ExportService
-        String filename = PreferencesUtils.getTrackFileformatGenerator().format(track, trackFileFormat);
+    private boolean exportFileExists(ExportTask exportTask) {
+        String filename;
+        if (exportTask.isMultiExport()) {
+            filename = TrackFilenameGenerator.format(exportTask.getFilename(), exportTask.getTrackFileFormat());
+        } else {
+            Track track = contentProviderUtils.getTrack(exportTask.getTrackIds().get(0));
+            filename = PreferencesUtils.getTrackFileformatGenerator().format(track, trackFileFormat);
+        }
         return directoryFiles.stream().anyMatch(filename::equals);
     }
 
@@ -269,31 +282,29 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
     }
 
     private void setProgress() {
-        int done = getTotalDone();
+        viewBinding.exportProgressDone.setText("" + getTotalDone());
-
-        viewBinding.exportProgressDone.setText("" + done);
         viewBinding.exportProgressTotal.setText("" + trackExportTotalCount);
 
-        viewBinding.exportProgressBar.setProgress((int) ((float) done / (float) trackExportTotalCount * 100f));
+        viewBinding.exportProgressBar.setProgress((int) ((float) getTotalDone() / (float) trackExportTotalCount * 100f));
-        viewBinding.exportProgressSummaryNew.setText(String.valueOf(trackExportSuccessCount));
+        viewBinding.exportProgressSummaryNew.setText("" + trackExportSuccessCount);
-        viewBinding.exportProgressSummaryOverwrite.setText(String.valueOf(trackExportOverwrittenCount));
+        viewBinding.exportProgressSummaryOverwrite.setText("" + trackExportOverwrittenCount);
-        viewBinding.exportProgressSummarySkip.setText(String.valueOf(trackExportSkippedCount));
+        viewBinding.exportProgressSummarySkip.setText("" + trackExportSkippedCount);
-        viewBinding.exportProgressSummaryErrors.setText(String.valueOf(trackExportErrorCount));
+        viewBinding.exportProgressSummaryErrors.setText("" + trackExportErrorCount);
         viewBinding.exportProgressSummaryNewGroup.setVisibility(trackExportSuccessCount > 0 ? View.VISIBLE : View.GONE);
         viewBinding.exportProgressSummaryOverwriteGroup.setVisibility(trackExportOverwrittenCount > 0 ? View.VISIBLE : View.GONE);
         viewBinding.exportProgressSummarySkipGroup.setVisibility(trackExportSkippedCount > 0 ? View.VISIBLE : View.GONE);
         viewBinding.exportProgressSummaryErrorsGroup.setVisibility(trackExportErrorCount > 0 ? View.VISIBLE : View.GONE);
     }
 
-    private void onExportCompleted(Track track) {
+    private void nextExport(@Nullable ExportTask exportTask) {
-        tracks.remove(track);
+        exportTasks.remove(exportTask);
 
         setProgress();
-        if (tracks.isEmpty()) {
+        if (exportTasks.isEmpty()) {
             onExportEnded();
             return;
         }
-        export(tracks.get(0));
+        export(exportTasks.get(0));
     }
 
     private void onExportEnded() {
@@ -318,30 +329,32 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
     }
 
     @Override
-    public void onExportSuccess(Track.Id trackId) {
+    public void onExportSuccess(ExportTask exportTask) {
-        Track track = contentProviderUtils.getTrack(trackId);
+        if (exportFileExists(exportTask)) {
-
-        if (exportFileExists(track)) {
             trackExportOverwrittenCount++;
         } else {
             trackExportSuccessCount++;
         }
 
-        onExportCompleted(track);
+        nextExport(exportTask);
     }
 
     @Override
-    public void onExportError(Track.Id trackId) {
+    public void onExportError(ExportTask exportTask) {
-        Track track = contentProviderUtils.getTrack(trackId);
-
         trackExportErrorCount++;
-        trackErrors.add(track.getName());
+        String name;
+        if (exportTask.isMultiExport()) {
+            name = exportTask.getFilename();
+        } else {
+            name = contentProviderUtils.getTrack(exportTask.getTrackIds().get(0)).getName();
+        }
+        trackErrors.add(name);
 
-        onExportCompleted(track);
+        nextExport(exportTask);
     }
 
-    private void conflict(Track track) {
+    private void conflict(ExportTask exportTask) {
-        PendingConflict newConflict = new PendingConflict(track);
+        PendingConflict newConflict = new PendingConflict(exportTask);
         conflictsQueue.add(newConflict);
 
         if (conflictsQueue.size() == 1) {
@@ -353,10 +366,10 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
      * Handle conflicts (exporting file already exists).
      */
     private class PendingConflict {
-        private final Track track;
+        private final ExportTask exportTask;
 
-        public PendingConflict(Track track) {
+        public PendingConflict(ExportTask exportTask) {
-            this.track = track;
+            this.exportTask = exportTask;
         }
 
         /**
@@ -366,14 +379,20 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
          * @return true if it could resolve the conflict or false otherwise.
          */
         public boolean resolve() {
-            if (autoConflict == CONFLICT_NONE) {
+            if (autoConflict == ConflictResolutionStrategy.CONFLICT_NONE) {
                 viewBinding.exportProgressAlertIcon.setImageDrawable(ContextCompat.getDrawable(ExportActivity.this, R.drawable.ic_report_problem_24));
-                viewBinding.exportProgressAlertMsg.setText(getString(R.string.export_track_already_exists_msg, track.getName()));
+                String name;
+                if (exportTask.isMultiExport()) {
+                    name = exportTask.getFilename();
+                } else {
+                    name = contentProviderUtils.getTrack(exportTask.getTrackIds().get(0)).getName();
+                }
+                viewBinding.exportProgressAlertMsg.setText(getString(R.string.export_track_already_exists_msg, name));
                 setConflictVisibility(View.VISIBLE);
                 return false;
             }
 
-            export(track);
+            export(exportTask);
             return true;
         }
 
@@ -381,10 +400,10 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
          * Overwrite the export file and set the autoConflict if user set the "do it for all" switch button.
          */
         public void overwrite() {
-            export(track, CONFLICT_OVERWRITE);
+            export(exportTask, ConflictResolutionStrategy.CONFLICT_OVERWRITE);
 
             if (viewBinding.exportProgressApplyToAll.isChecked()) {
-                autoConflict = CONFLICT_OVERWRITE;
+                autoConflict = ConflictResolutionStrategy.CONFLICT_OVERWRITE;
             }
         }
 
@@ -392,10 +411,10 @@ public class ExportActivity extends FragmentActivity implements ExportServiceRes
          * Skip the export file and set the autoConflict if user set the "do it for all" switch button.
          */
         public void skip() {
-            export(track, CONFLICT_SKIP);
+            export(exportTask, ConflictResolutionStrategy.CONFLICT_SKIP);
 
             if (viewBinding.exportProgressApplyToAll.isChecked()) {
-                autoConflict = CONFLICT_SKIP;
+                autoConflict = ConflictResolutionStrategy.CONFLICT_SKIP;
             }
         }
     }

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

@@ -12,6 +12,9 @@ import androidx.annotation.NonNull;
 import androidx.core.app.JobIntentService;
 import androidx.documentfile.provider.DocumentFile;
 
+import java.util.List;
+import java.util.stream.Collectors;
+
 import de.dennisguse.opentracks.data.ContentProviderUtils;
 import de.dennisguse.opentracks.data.models.Track;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
@@ -22,16 +25,14 @@ public class ExportService extends JobIntentService {
     private static final int JOB_ID = 1;
 
     private static final String EXTRA_RECEIVER = "extra_receiver";
-    private static final String EXTRA_TRACK_ID = "extra_track_id";
+    private static final String EXTRA_EXPORT_TASK = "export_task";
-    private static final String EXTRA_TRACK_FILE_FORMAT = "extra_track_file_format";
     private static final String EXTRA_DIRECTORY_URI = "extra_directory_uri";
     private static final String TAG = ExportService.class.getSimpleName();
 
-    public static void enqueue(Context context, ExportServiceResultReceiver receiver, Track.Id trackId, TrackFileFormat trackFileFormat, Uri directoryUri) {
+    public static void enqueue(Context context, ExportServiceResultReceiver receiver, ExportTask exportTask, Uri directoryUri) {
         Intent intent = new Intent(context, JobService.class);
         intent.putExtra(EXTRA_RECEIVER, receiver);
-        intent.putExtra(EXTRA_TRACK_ID, trackId);
+        intent.putExtra(EXTRA_EXPORT_TASK, exportTask);
-        intent.putExtra(EXTRA_TRACK_FILE_FORMAT, trackFileFormat);
         intent.putExtra(EXTRA_DIRECTORY_URI, directoryUri);
         enqueueWork(context, ExportService.class, JOB_ID, intent);
     }
@@ -40,13 +41,12 @@ public class ExportService extends JobIntentService {
     protected void onHandleWork(@NonNull Intent intent) {
         // Get all data.
         ResultReceiver resultReceiver = intent.getParcelableExtra(EXTRA_RECEIVER);
-        Track.Id trackId = intent.getParcelableExtra(EXTRA_TRACK_ID);
+        ExportTask exportTask = intent.getParcelableExtra(EXTRA_EXPORT_TASK);
-        TrackFileFormat trackFileFormat = (TrackFileFormat) intent.getSerializableExtra(EXTRA_TRACK_FILE_FORMAT);
         Uri directoryUri = intent.getParcelableExtra(EXTRA_DIRECTORY_URI);
 
         // Prepare resultCode and bundle to send to the receiver.
         Bundle bundle = new Bundle();
-        bundle.putParcelable(ExportServiceResultReceiver.RESULT_EXTRA_TRACK_ID, trackId);
+        bundle.putParcelable(ExportServiceResultReceiver.RESULT_EXTRA_EXPORT_TASK, exportTask);
 
         // Build directory file.
         DocumentFile directoryFile = DocumentFile.fromTreeUri(this, directoryUri);
@@ -57,9 +57,7 @@ public class ExportService extends JobIntentService {
         }
 
         // Export.
-        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(this);
+        boolean success = ExportUtils.exportTrack(this, directoryFile, exportTask);
-        Track track = contentProviderUtils.getTrack(trackId);
-        boolean success = ExportUtils.exportTrack(this, trackFileFormat, directoryFile, track);
 
         // Send result to the receiver.
         int resultCode = success ? ExportServiceResultReceiver.RESULT_CODE_SUCCESS : ExportServiceResultReceiver.RESULT_CODE_ERROR;

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

@@ -17,7 +17,7 @@ public class ExportServiceResultReceiver extends ResultReceiver {
     public static final int RESULT_CODE_SUCCESS = 1;
     public static final int RESULT_CODE_ERROR = 0;
 
-    public static final String RESULT_EXTRA_TRACK_ID = "result_extra_track_id";
+    public static final String RESULT_EXTRA_EXPORT_TASK = "result_extra_export_task";
 
     private final Receiver receiver;
 
@@ -28,19 +28,19 @@ public class ExportServiceResultReceiver extends ResultReceiver {
 
     @Override
     protected void onReceiveResult(int resultCode, Bundle resultData) {
-        Track.Id trackId = resultData.getParcelable(ExportServiceResultReceiver.RESULT_EXTRA_TRACK_ID);
+        ExportTask exportTask = resultData.getParcelable(ExportServiceResultReceiver.RESULT_EXTRA_EXPORT_TASK);
         switch (resultCode) {
-            case RESULT_CODE_SUCCESS -> receiver.onExportSuccess(trackId);
+            case RESULT_CODE_SUCCESS -> receiver.onExportSuccess(exportTask);
-            case RESULT_CODE_ERROR -> receiver.onExportError(trackId);
+            case RESULT_CODE_ERROR -> receiver.onExportError(exportTask);
             default -> throw new RuntimeException("Unknown resultCode.");
         }
     }
 
     public interface Receiver {
-        default void onExportSuccess(Track.Id trackId) {
+        default void onExportSuccess(ExportTask exportTask) {
         }
 
-        default void onExportError(Track.Id trackId) {
+        default void onExportError(ExportTask exportTask) {
         }
     }
 }

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

@@ -0,0 +1,87 @@
+package de.dennisguse.opentracks.io.file.exporter;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.List;
+import java.util.Objects;
+
+import de.dennisguse.opentracks.data.models.Track;
+import de.dennisguse.opentracks.io.file.TrackFileFormat;
+
+public class ExportTask implements Parcelable {
+
+    private final String filename; //TODO Name will only be used when exporting multiple tracks
+
+    private final TrackFileFormat trackFileFormat;
+
+    private final List<Track.Id> trackIds;
+
+    public ExportTask(@Nullable String filename, @NonNull TrackFileFormat trackFileFormat, @NonNull List<Track.Id> trackIds) {
+        this.filename = filename;
+        this.trackFileFormat = trackFileFormat;
+        this.trackIds = trackIds;
+    }
+
+    protected ExportTask(Parcel in) {
+        filename = in.readString();
+        trackFileFormat = TrackFileFormat.valueOf(in.readString());
+        trackIds = in.createTypedArrayList(Track.Id.CREATOR);
+    }
+
+    public String getFilename() {
+        return filename;
+    }
+
+    public TrackFileFormat getTrackFileFormat() {
+        return trackFileFormat;
+    }
+
+    public List<Track.Id> getTrackIds() {
+        return trackIds;
+    }
+
+    public boolean isMultiExport() {
+        return trackIds.size() > 1;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        ExportTask that = (ExportTask) o;
+        return Objects.equals(filename, that.filename) && trackFileFormat == that.trackFileFormat && Objects.equals(trackIds, that.trackIds);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(filename, trackFileFormat, trackIds);
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(filename);
+        dest.writeString(trackFileFormat.name());
+        dest.writeTypedList(trackIds);
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    public static final Creator<ExportTask> CREATOR = new Creator<>() {
+        @Override
+        public ExportTask createFromParcel(Parcel in) {
+            return new ExportTask(in);
+        }
+
+        @Override
+        public ExportTask[] newArray(int size) {
+            return new ExportTask[size];
+        }
+    };
+}

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

@@ -98,12 +98,7 @@ public class GPXTrackExporter implements TrackExporter {
     }
 
     @Override
-    public boolean writeTrack(Track track, @NonNull OutputStream outputStream) {
+    public boolean writeTrack(List<Track> tracks, @NonNull OutputStream outputStream) {
-        return writeTrack(new Track[]{track}, outputStream);
-    }
-
-    @Override
-    public boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream) {
         try {
             prepare(outputStream);
             writeHeader();

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

@@ -99,18 +99,14 @@ public class KMLTrackExporter implements TrackExporter {
         this.contentProviderUtils = contentProviderUtils;
     }
 
-    public boolean writeTrack(Track track, @NonNull OutputStream outputStream) {
+    public boolean writeTrack(List<Track> tracks, @NonNull OutputStream outputStream) {
-        return writeTrack(new Track[]{track}, outputStream);
-    }
-
-    public boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream) {
         try {
             prepare(outputStream);
             writeHeader(tracks);
             for (Track track : tracks) {
                 writeMarkers(track);
             }
-            boolean hasMultipleTracks = tracks.length > 1;
+            boolean hasMultipleTracks = tracks.size() > 1;
             if (hasMultipleTracks) {
                 writeMultiTrackBegin();
             }
@@ -222,7 +218,7 @@ public class KMLTrackExporter implements TrackExporter {
         }
     }
 
-    private void writeHeader(Track[] tracks) {
+    private void writeHeader(List<Track> tracks) {
         if (printWriter != null) {
             printWriter.println(
                     """
@@ -241,7 +237,7 @@ public class KMLTrackExporter implements TrackExporter {
             printWriter.println("<open>1</open>");
             printWriter.println("<visibility>1</visibility>");
 
-            Track track = tracks[0];
+            Track track = tracks.get(0);
             printWriter.println("<name>" + StringUtils.formatCData(track.getName()) + "</name>");
             printWriter.println("<atom:generator>" + StringUtils.formatCData(context.getString(R.string.app_name)) + "</atom:generator>");
 
@@ -293,7 +289,7 @@ public class KMLTrackExporter implements TrackExporter {
 
     private void writeMultiTrackBegin() {
         if (printWriter != null) {
-            printWriter.println("<Folder id=tour>");
+            printWriter.println("<Folder id=\"tracks\">");
             printWriter.println("<name>" + context.getString(R.string.generic_tracks) + "</name>");
             printWriter.println("<open>1</open>");
         }

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

@@ -28,6 +28,7 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.util.List;
 import java.util.zip.ZipEntry;
 import java.util.zip.ZipOutputStream;
 
@@ -64,12 +65,7 @@ public class KmzTrackExporter implements TrackExporter {
     }
 
     @Override
-    public boolean writeTrack(Track track, @NonNull OutputStream outputStream) {
+    public boolean writeTrack(List<Track> tracks, @NonNull OutputStream outputStream) {
-        return writeTrack(new Track[]{track}, outputStream);
-    }
-
-    @Override
-    public boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream) {
         try (ZipOutputStream zipOutputStream = new ZipOutputStream(outputStream)) {
             // Add kml file
             ZipEntry zipEntry = new ZipEntry(KMZ_KML_FILE);
@@ -91,7 +87,7 @@ public class KmzTrackExporter implements TrackExporter {
         }
     }
 
-    private void addImages(Context context, Track[] tracks, ZipOutputStream zipOutputStream) throws InterruptedException, IOException {
+    private void addImages(Context context, List<Track> tracks, ZipOutputStream zipOutputStream) throws InterruptedException, IOException {
         for (Track track : tracks) {
             try (Cursor cursor = contentProviderUtils.getMarkerCursor(track.getId(), null, -1)) {
                 if (cursor != null && cursor.moveToFirst()) {

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

@@ -19,6 +19,7 @@ package de.dennisguse.opentracks.io.file.exporter;
 import androidx.annotation.NonNull;
 
 import java.io.OutputStream;
+import java.util.List;
 
 import de.dennisguse.opentracks.data.models.Track;
 
@@ -29,7 +30,5 @@ import de.dennisguse.opentracks.data.models.Track;
  */
 public interface TrackExporter {
 
-    boolean writeTrack(Track[] tracks, @NonNull OutputStream outputStream);
+    boolean writeTrack(List<Track> tracks, @NonNull OutputStream outputStream);
-
-    boolean writeTrack(Track track, @NonNull OutputStream outputStream);
 }

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

@@ -101,6 +101,30 @@ public abstract class DirectoryChooserActivity extends AppCompatActivity {
         }
     }
 
+    public static class ExportDirectoryChooserOneFileActivity extends DirectoryChooserActivity {
+
+        @Override
+        protected DocumentFile configureDirectoryChooserIntent(Intent intent) {
+            super.configureDirectoryChooserIntent(intent);
+            intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
+            return IntentUtils.toDocumentFile(this, PreferencesUtils.getDefaultExportDirectoryUri());
+        }
+
+        @Override
+        protected boolean isDirectoryValid(final DocumentFile directoryUri) {
+            return super.isDirectoryValid(directoryUri) && directoryUri.canWrite();
+        }
+
+        @Override
+        protected Intent createNextActivityIntent(Uri directoryUri) {
+            Intent intent = IntentUtils.newIntent(this, ExportActivity.class);
+            intent.putExtra(ExportActivity.EXTRA_DIRECTORY_URI_KEY, directoryUri);
+            intent.putExtra(ExportActivity.EXTRA_ONE_FILE_KEY, true);
+            intent.putExtra(ExportActivity.EXTRA_TRACKFILEFORMAT_KEY, PreferencesUtils.getExportTrackFileFormat());
+            return intent;
+        }
+    }
+
     public static class DefaultTrackExportDirectoryChooserActivity extends DirectoryChooserActivity {
 
         @Override

src/main/java/de/dennisguse/opentracks/util/ExportUtils.java

@@ -17,13 +17,16 @@ import java.io.IOException;
 import java.io.OutputStream;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.stream.Collectors;
 
 import de.dennisguse.opentracks.R;
 import de.dennisguse.opentracks.data.ContentProviderUtils;
 import de.dennisguse.opentracks.data.models.Track;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
+import de.dennisguse.opentracks.io.file.TrackFilenameGenerator;
 import de.dennisguse.opentracks.io.file.exporter.ExportService;
 import de.dennisguse.opentracks.io.file.exporter.ExportServiceResultReceiver;
+import de.dennisguse.opentracks.io.file.exporter.ExportTask;
 import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
 import de.dennisguse.opentracks.settings.PreferencesUtils;
 import de.dennisguse.opentracks.settings.SettingsActivity;
@@ -44,7 +47,7 @@ public class ExportUtils {
 
             ExportServiceResultReceiver resultReceiver = new ExportServiceResultReceiver(new Handler(), new ExportServiceResultReceiver.Receiver() {
                 @Override
-                public void onExportError(Track.Id trackId) {
+                public void onExportError(ExportTask unused) {
                     Intent intent = new Intent(context, SettingsActivity.class);
                     intent.putExtra(SettingsActivity.EXTRAS_CHECK_EXPORT_DIRECTORY, true);
                     intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
@@ -52,21 +55,29 @@ public class ExportUtils {
                 }
             });
 
-            ExportService.enqueue(context, resultReceiver, trackId, trackFileFormat, directory.getUri());
+            ExportService.enqueue(context, resultReceiver, new ExportTask(null, trackFileFormat, List.of(trackId)), directory.getUri());
         }
     }
 
-    public static boolean exportTrack(Context context, TrackFileFormat trackFileFormat, DocumentFile directory, Track track) {
+    public static boolean exportTrack(Context context, DocumentFile directory, ExportTask exportTask) {
-        TrackExporter trackExporter = trackFileFormat.createTrackExporter(context, new ContentProviderUtils(context));
+        ContentProviderUtils contentProviderUtils = new ContentProviderUtils(context);
+        List<Track> tracks = exportTask.getTrackIds().stream().map(contentProviderUtils::getTrack).collect(Collectors.toList());
+        Uri exportDocumentFileUri;
+        if (tracks.size() == 1) {
+            exportDocumentFileUri = getExportDocumentFileUri(context, tracks.get(0), exportTask.getTrackFileFormat(), directory);
+        } else {
+            String filename = TrackFilenameGenerator.format(exportTask.getFilename(), exportTask.getTrackFileFormat());
+            exportDocumentFileUri = getExportDocumentFileUri(context, filename, exportTask.getTrackFileFormat(), directory);
+        }
 
-        Uri exportDocumentFileUri = getExportDocumentFileUri(context, track, trackFileFormat, directory);
         if (exportDocumentFileUri == null) {
             Log.e(TAG, "Couldn't create document file for export");
             return false;
         }
 
+        TrackExporter trackExporter = exportTask.getTrackFileFormat().createTrackExporter(context, contentProviderUtils);
         try (OutputStream outputStream = context.getContentResolver().openOutputStream(exportDocumentFileUri)) {
-            if (trackExporter.writeTrack(track, outputStream)) {
+            if (trackExporter.writeTrack(tracks, outputStream)) {
                 return true;
             } else {
                 if (!DocumentFile.fromSingleUri(context, exportDocumentFileUri).delete()) {
@@ -102,6 +113,10 @@ public class ExportUtils {
 
     private static Uri getExportDocumentFileUri(Context context, Track track, TrackFileFormat trackFileFormat, DocumentFile directory) {
         String exportFileName = PreferencesUtils.getTrackFileformatGenerator().format(track, trackFileFormat);
+        return getExportDocumentFileUri(context, exportFileName, trackFileFormat, directory);
+    }
+
+    private static Uri getExportDocumentFileUri(Context context, String exportFileName, TrackFileFormat trackFileFormat, DocumentFile directory) {
         Uri exportDocumentFileUri = findFile(context, directory.getUri(), exportFileName);
         if (exportDocumentFileUri == null) {
             final DocumentFile file = directory.createFile(trackFileFormat.getMimeType(), exportFileName);

src/main/res/values/strings.xml

@@ -210,12 +210,12 @@ limitations under the License.
     <string name="export_cannot_write_to_dir">Cannot write to export directory.</string>
     <string name="export_dir_not_writable">" (not writable!)"</string>
     <string name="export_progress_message">Exporting to %1$s&#8230;</string>
-    <string name="export_track_already_exists_msg">The track %1$s already exists at the destination directory.</string>
+    <string name="export_track_already_exists_msg">The file %1$s already exists at the destination directory.</string>
     <string name="export_all_do_it_for_all">do it for all conflicts</string>
-    <string name="export_track_errors">Tracks not exported</string>
+    <string name="export_track_errors">Files not exported</string>
-    <string name="export_progress_summary_new_msg">New tracks exported</string>
+    <string name="export_progress_summary_new_msg">New files exported</string>
-    <string name="export_progress_summary_overwrite_msg">Tracks overwritten</string>
+    <string name="export_progress_summary_overwrite_msg">Files overwritten</string>
-    <string name="export_progress_summary_skip_msg">Tracks skipped</string>
+    <string name="export_progress_summary_skip_msg">Files skipped</string>
     <string name="export_progress_summary_errors_msg">Errors</string>
     <!-- External Storage -->
     <!-- Generic -->
@@ -297,7 +297,8 @@ limitations under the License.
     <string name="menu_aggregated_statistics">Aggregated stats</string>
     <string name="menu_delete">Delete</string>
     <string name="menu_edit">Edit</string>
-    <string name="menu_export_all">Export all</string>
+    <string name="menu_export_all">Export all (one file per track)</string>
+    <string name="menu_export_all_one_file">Export all (one file for all tracks)</string>
     <string name="menu_help">Help</string>
     <string name="menu_import_all">Import all</string>
     <string name="menu_insert_marker">Insert marker</string>

src/main/res/xml/settings_import_export.xml

@@ -26,6 +26,13 @@
                 android:targetClass="de.dennisguse.opentracks.io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserActivity"
                 android:targetPackage="@string/applicationId" />
         </Preference>
+        <Preference
+            android:key="@string/settings_export"
+            android:title="@string/menu_export_all_one_file">
+            <intent
+                android:targetClass="de.dennisguse.opentracks.io.file.importer.DirectoryChooserActivity$ExportDirectoryChooserOneFileActivity"
+                android:targetPackage="@string/applicationId" />
+        </Preference>
         <Preference
             android:key="@string/settings_default_export_directory_key"
             android:title="@string/settings_default_export_uri_title">
@@ -48,5 +55,4 @@
             android:title="@string/settings_export_filename_title"
             android:defaultValue="@string/export_filename_format_default" />
     </PreferenceCategory>
-
 </PreferenceScreen>