Cleanup.

src/main/java/de/dennisguse/opentracks/AbstractTrackDeleteActivity.java

@@ -22,7 +22,6 @@ import androidx.annotation.Nullable;
 
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.Collections;
 import java.util.stream.Collectors;
 
 import de.dennisguse.opentracks.content.data.Track;

src/main/java/de/dennisguse/opentracks/ShowOnMapProxyActivity.java

@@ -42,7 +42,7 @@ public abstract class ShowOnMapProxyActivity extends AppCompatActivity {
      * @param trackIds the track ids
      */
     private static void showTrackfileFormat(Context context, TrackFileFormat trackFileFormat, Set<Track.Id> trackIds) {
-        if (trackIds.size() == 0) {
+        if (trackIds.isEmpty()) {
             return;
         }
 

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

@@ -416,21 +416,6 @@ public class ContentProviderUtils {
         return markers;
     }
 
-    //TODO Move to testing package
-    @Deprecated
-    public int getMarkerCount(Track.Id trackId) {
-        String[] projection = new String[]{"count(*) AS count"};
-        String selection = MarkerColumns.TRACKID + "=?";
-        String[] selectionArgs = new String[]{Long.toString(trackId.getId())};
-        try (Cursor cursor = contentResolver.query(MarkerColumns.CONTENT_URI, projection, selection, selectionArgs, MarkerColumns._ID)) {
-            if (cursor == null) {
-                return 0;
-            }
-            cursor.moveToFirst();
-            return cursor.getInt(0);
-        }
-    }
-
     /**
      * @return the content provider URI of the inserted marker.
      */

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

@@ -77,7 +77,7 @@ public class ShareContentProvider extends CustomContentProvider {
     }
 
     public static Pair<Uri, String> createURI(Set<Track.Id> trackIds, String trackName, @NonNull TrackFileFormat trackFileFormat) {
-        if (trackIds.size() == 0) {
+        if (trackIds.isEmpty()) {
             throw new UnsupportedOperationException();
         }
 

src/main/java/de/dennisguse/opentracks/fragments/IntervalsFragment.java

@@ -64,7 +64,6 @@ public class IntervalsFragment extends Fragment {
     /**
      * Creates an instance of this class.
      *
-     * @param trackId
      * @param  fromTopToBottom If true then the intervals are shown from top to bottom (the first interval on top). Otherwise the intervals are shown from bottom to top.
      * @return IntervalsFragment instance.
      */

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

@@ -136,7 +136,7 @@ public class IntentUtils {
             uris.add(marker.getPhotoURI());
         }
 
-        if (uris.size() == 0) {
+        if (uris.isEmpty()) {
             return null;
         }
 

src/main/java/de/dennisguse/opentracks/viewmodels/IntervalStatistics.java

@@ -37,7 +37,6 @@ public class IntervalStatistics {
     /**
      * Complete intervals with the tracks points from the iterator.
      *
-     * @param trackPointIterator
      * @return the last track point's id used to compute the intervals.
      */
     public TrackPoint.Id addTrackPoints(TrackPointIterator trackPointIterator) {