Bugfix: crash when using number as default track name.

Fixes #2229.

src/main/java/de/dennisguse/opentracks/services/TrackRecordingManager.java

@@ -75,18 +75,25 @@ public class TrackRecordingManager implements SharedPreferences.OnSharedPreferen
 
         Statistics initialStatistics = trackStatisticsUpdater.getTrackStatistics();
         String activityTypeLocalized = PreferencesUtils.getDefaultActivityTypeLocalized();
-        Track track = new Track(
+
-                null,
+        trackId = contentProviderUtils.insertTrack(
-                UUID.randomUUID(), //TODO This is not really cool: should happen in ContentProviderUtils?
+                new Track(
-                TrackNameUtils.getTrackName(context, trackId, initialStatistics.startTime().atOffset(zoneOffset)),
+                        null,
-                "",
+                        UUID.randomUUID(), //TODO This is not really cool: should happen in ContentProviderUtils?
-                activityTypeLocalized,
+                        "",
-                ActivityType.findByLocalizedString(context, activityTypeLocalized),
+                        "",
-                zoneOffset,
+                        activityTypeLocalized,
-                initialStatistics
+                        ActivityType.findByLocalizedString(context, activityTypeLocalized),
+                        zoneOffset,
+                        initialStatistics
+                )
         );
 
-        trackId = contentProviderUtils.insertTrack(track);
+        //TODO Move this into ContentProviderUtils?
+        // Generating the name requires already the track.id (generated by the database).
+        TrackBuilder track = new TrackBuilder(contentProviderUtils.getTrack(trackId));
+        track.setName(TrackNameUtils.getTrackName(context, trackId, initialStatistics.startTime().atOffset(zoneOffset)));
+        contentProviderUtils.updateTrack(track.getTrack());
 
         onNewTrackPoint(segmentStartTrackPoint);