Refactored TrackWriter instantiation.

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

@@ -22,8 +22,7 @@ import java.util.Arrays;
 
 import de.dennisguse.opentracks.android.IContentResolver;
 import de.dennisguse.opentracks.io.file.TrackFileFormat;
-import de.dennisguse.opentracks.io.file.exporter.FileTrackExporter;
+import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
-import de.dennisguse.opentracks.io.file.exporter.TrackWriter;
 
 /**
  * A content provider that mimics the behavior of {@link androidx.core.content.FileProvider}, which shares virtual (non-existing) KML-files.
@@ -176,14 +175,13 @@ public class ShareContentProvider extends CustomContentProvider implements ICont
             tracks[i] = contentProviderUtils.getTrack(trackIds[i]);
         }
 
-        TrackWriter kmlTrackWriter = TrackFileFormat.KML.newTrackWriter(getContext(), false);
+        final TrackExporter trackExporter = getTrackFileFormat(uri).newTrackExporter(getContext(), tracks, null);
-        final FileTrackExporter fileTrackExporter = new FileTrackExporter(contentProviderUtils, tracks, kmlTrackWriter, null);
 
         PipeDataWriter pipeDataWriter = new PipeDataWriter<String>() {
             @Override
             public void writeDataToPipe(@NonNull ParcelFileDescriptor output, @NonNull Uri uri, @NonNull String mimeType, @Nullable Bundle opts, @Nullable String args) {
                 try (FileOutputStream fileOutputStream = new FileOutputStream(output.getFileDescriptor())) {
-                    fileTrackExporter.writeTrack(fileOutputStream);
+                    trackExporter.writeTrack(fileOutputStream);
                 } catch (IOException e) {
                     Log.w(TAG, "there occurred an error while sharing a file: " + e);
                 }

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

@@ -7,8 +7,14 @@ import android.os.Parcelable;
 import java.util.Locale;
 
 import de.dennisguse.opentracks.R;
+import de.dennisguse.opentracks.content.ContentProviderUtils;
+import de.dennisguse.opentracks.content.Track;
+import de.dennisguse.opentracks.io.file.exporter.FileTrackExporter;
 import de.dennisguse.opentracks.io.file.exporter.GpxTrackWriter;
 import de.dennisguse.opentracks.io.file.exporter.KmlTrackWriter;
+import de.dennisguse.opentracks.io.file.exporter.KmzTrackExporter;
+import de.dennisguse.opentracks.io.file.exporter.TrackExporter;
+import de.dennisguse.opentracks.io.file.exporter.TrackExporterListener;
 import de.dennisguse.opentracks.io.file.exporter.TrackWriter;
 
 /**
@@ -36,6 +42,15 @@ public enum TrackFileFormat implements Parcelable {
         public String getMimeType() {
             return "application/vnd.google-earth.kmz";
         }
+
+        public TrackExporter newTrackExporter(Context context, Track[] tracks, TrackExporterListener trackExporterListener) {
+            ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
+            TrackWriter trackWriter = this.newTrackWriter(context, tracks.length > 1);
+
+            FileTrackExporter fileTrackExporter = new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
+
+            return new KmzTrackExporter(contentProviderUtils, fileTrackExporter, tracks);
+        }
     },
     GPX {
         @Override
@@ -79,6 +94,12 @@ public enum TrackFileFormat implements Parcelable {
      */
     public abstract TrackWriter newTrackWriter(Context context, boolean multiple);
 
+    public TrackExporter newTrackExporter(Context context, Track[] tracks, TrackExporterListener trackExporterListener) {
+        ContentProviderUtils contentProviderUtils = ContentProviderUtils.Factory.get(context);
+        TrackWriter trackWriter = this.newTrackWriter(context, tracks.length > 1);
+        return new FileTrackExporter(contentProviderUtils, trackWriter, tracks, trackExporterListener);
+    }
+
     /**
      * Returns the mime type for each format.
      */

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

@@ -20,6 +20,8 @@ import android.database.Cursor;
 import android.location.Location;
 import android.util.Log;
 
+import java.io.OutputStream;
+
 import de.dennisguse.opentracks.Constants;
 import de.dennisguse.opentracks.content.ContentProviderUtils;
 import de.dennisguse.opentracks.content.ContentProviderUtils.LocationIterator;
@@ -28,8 +30,6 @@ import de.dennisguse.opentracks.content.Track;
 import de.dennisguse.opentracks.content.Waypoint;
 import de.dennisguse.opentracks.util.LocationUtils;
 
-import java.io.OutputStream;
-
 /**
  * Track Writer for writing tracks to an {@link OutputStream}.
  *
@@ -49,11 +49,11 @@ public class FileTrackExporter implements TrackExporter {
      * Constructor.
      *
      * @param contentProviderUtils  the content provider utils
-     * @param tracks                the tracks
      * @param trackWriter           the track writer
+     * @param tracks                the tracks
      * @param trackExporterListener the track export listener
      */
-    public FileTrackExporter(ContentProviderUtils contentProviderUtils, Track[] tracks, TrackWriter trackWriter, TrackExporterListener trackExporterListener) {
+    public FileTrackExporter(ContentProviderUtils contentProviderUtils, TrackWriter trackWriter, Track[] tracks, TrackExporterListener trackExporterListener) {
         this.contentProviderUtils = contentProviderUtils;
         this.tracks = tracks;
         this.trackWriter = trackWriter;

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

@@ -67,7 +67,7 @@ public class SaveAsyncTask extends AsyncTask<Void, Integer, Boolean> {
     /**
      * Creates an AsyncTask.
      *
-     * @param exportActivity    the activity currently associated with this task
+     * @param exportActivity  the activity currently associated with this task
      * @param trackFileFormat the track file format
      * @param directory       the directory to write the file
      */
@@ -154,23 +154,20 @@ public class SaveAsyncTask extends AsyncTask<Void, Integer, Boolean> {
             return false;
         }
 
-        FileTrackExporter fileTrackExporter = new FileTrackExporter(contentProviderUtils, tracks,
+        TrackExporterListener trackExporterListener = new TrackExporterListener() {
-                trackFileFormat.newTrackWriter(context, tracks.length > 1),
+            @Override
-                new TrackExporterListener() {
+            public void onProgressUpdate(int number, int max) {
-                    @Override
+                //Update the progress dialog once every 500 points.
-                    public void onProgressUpdate(int number, int max) {
+                if (number % 500 == 0) {
-                        //Update the progress dialog once every 500 points.
+                    publishProgress(number, max);
-                        if (number % 500 == 0) {
+                }
-                            publishProgress(number, max);
+            }
-                        }
+        };
-                    }
+
-                });
+        TrackExporter trackExporter = trackFileFormat.newTrackExporter(context, tracks, trackExporterListener);
-        boolean useKmz = trackFileFormat == TrackFileFormat.KMZ;
-        String extension = useKmz ? KmzTrackExporter.KMZ_EXTENSION : trackFileFormat.getExtension();
-        TrackExporter trackExporter = useKmz ? new KmzTrackExporter(contentProviderUtils, fileTrackExporter, tracks) : fileTrackExporter;
 
         Track track = tracks[0];
-        String fileName = FileUtils.buildUniqueFileName(directory, track.getName(), extension);
+        String fileName = FileUtils.buildUniqueFileName(directory, track.getName(), trackFileFormat.getExtension());
         File file = new File(directory, fileName);
 
         try (FileOutputStream fileOutputStream = new FileOutputStream(file)) {