Make track import behavior on duplicate UUID configurable (default: import with a new UUID).

src/main/java/de/dennisguse/opentracks/content/provider/ContentProviderUtils.java

@@ -30,7 +30,6 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
-import java.util.UUID;
 
 import de.dennisguse.opentracks.BuildConfig;
 import de.dennisguse.opentracks.android.ContentResolverWrapper;
@@ -245,18 +244,6 @@ public class ContentProviderUtils {
         return null;
     }
 
-    /**
-     * @param uuid the UUID of a track.
-     */
-    public Track getTrack(UUID uuid) {
-        try (Cursor cursor = getTrackCursor(TracksColumns.UUID + "=?", new String[]{uuid.toString()}, TracksColumns._ID)) {
-            if (cursor != null && cursor.moveToNext()) {
-                return createTrack(cursor);
-            }
-        }
-        return null;
-    }
-
     /**
      * Gets a track cursor.
      * The caller owns the returned cursor and is responsible for closing it.

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

@@ -273,7 +273,18 @@ abstract class AbstractFileTrackImporter extends DefaultHandler implements Track
             trackData.trackStatisticsUpdater.updateTime(trackData.importTime);
         }
         trackData.track.setTrackStatistics(trackData.trackStatisticsUpdater.getTrackStatistics());
-        contentProviderUtils.updateTrack(trackData.track);
+
+        try {
+            contentProviderUtils.updateTrack(trackData.track);
+        } catch (SQLiteConstraintException e) {
+            if (PreferencesUtils.getPreventReimportTracks(context)) {
+                throw e;
+            }
+
+            //TODO This is a workaround until we have proper UI.
+            trackData.track.setUuid(UUID.randomUUID());
+            contentProviderUtils.updateTrack(trackData.track);
+        }
     }
 
     /**

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

@@ -340,6 +340,11 @@ public class PreferencesUtils {
         }
     }
 
+    public static boolean getPreventReimportTracks(Context context) {
+        final boolean defaultValue = getBoolean(context, R.bool.import_prevent_reimport_title_default, false);
+        return getBoolean(context, R.string.import_prevent_reimport_title_key, defaultValue);
+    }
+
     @Deprecated //Use TrackRecordingService
     public static boolean isRecording(Context context) {
         long recordingTrackId = getRecordingTrackId(context);