Code cleanup.

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

@@ -209,7 +209,7 @@ public class IntervalsFragment extends Fragment implements TrackDataListener {
     @Override
     public void onNewTrackPointsDone() {
         if (isResumed()) {
-            runOnUiThread(() -> loadIntervals());
+            runOnUiThread(this::loadIntervals);
         }
     }
 

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

@@ -64,17 +64,14 @@ public class StatisticsRecordingFragment extends Fragment implements TrackDataLi
         return new StatisticsRecordingFragment();
     }
 
-    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = new SharedPreferences.OnSharedPreferenceChangeListener() {
-        @Override
-        public void onSharedPreferenceChanged(SharedPreferences preferences, String key) {
-            if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
-                if (isResumed()) {
-                    getActivity().runOnUiThread(() -> {
-                        if (isResumed()) {
-                            updateUI();
-                        }
-                    });
-                }
+    private final SharedPreferences.OnSharedPreferenceChangeListener sharedPreferenceChangeListener = (preferences, key) -> {
+        if (PreferencesUtils.isKey(getContext(), R.string.stats_units_key, key) || PreferencesUtils.isKey(getContext(), R.string.stats_rate_key, key)) {
+            if (isResumed()) {
+                getActivity().runOnUiThread(() -> {
+                    if (isResumed()) {
+                        updateUI();
+                    }
+                });
             }
         }
     };

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

@@ -21,10 +21,10 @@ public class ImportViewModel extends AndroidViewModel implements ImportServiceRe
     private static final String TAG = ImportViewModel.class.getSimpleName();
 
     private MutableLiveData<Summary> importData;
-    private ImportServiceResultReceiver resultReceiver;
-    private Summary summary;
+    private final ImportServiceResultReceiver resultReceiver;
+    private final Summary summary;
     private boolean cancel = false;
-    private List<DocumentFile> filesToImport = new ArrayList<>();
+    private final List<DocumentFile> filesToImport = new ArrayList<>();
 
     public ImportViewModel(@NonNull Application application) {
         super(application);
@@ -47,9 +47,7 @@ public class ImportViewModel extends AndroidViewModel implements ImportServiceRe
     private void loadData(DocumentFile documentFile) {
         List<DocumentFile> fileList = FileUtils.getFiles(documentFile);
         summary.totalCount = fileList.size();
-        for (DocumentFile df : fileList) {
-            filesToImport.add(df);
-        }
+        filesToImport.addAll(fileList);
         importNextFile();
     }
 
@@ -89,12 +87,12 @@ public class ImportViewModel extends AndroidViewModel implements ImportServiceRe
         importNextFile();
     }
 
-    public class Summary {
+    public static class Summary {
         private int totalCount;
         private int successCount;
         private int existsCount;
         private int errorCount;
-        private ArrayList<String> fileErrors = new ArrayList<>();
+        private final ArrayList<String> fileErrors = new ArrayList<>();
 
         public int getTotalCount() {
             return totalCount;

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

@@ -190,10 +190,7 @@ public class KmzTrackImporter implements TrackImporter {
                 zipInputStream.closeEntry();
             }
             return trackId;
-        } catch (ImportParserException e) {
-            Log.e(TAG, "Unable to import file", e);
-            throw e;
-        } catch (ImportAlreadyExistsException e) {
+        } catch (ImportParserException | ImportAlreadyExistsException e) {
             Log.e(TAG, "Unable to import file", e);
             throw e;
         } catch (IOException e) {
@@ -259,9 +256,7 @@ public class KmzTrackImporter implements TrackImporter {
 
         try (ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(getKml(zipInputStream))) {
             return kmlFileTrackImporter.importFile(byteArrayInputStream);
-        } catch (ImportParserException e) {
-            throw e;
-        } catch (ImportAlreadyExistsException e) {
+        } catch (ImportParserException | ImportAlreadyExistsException e) {
             throw e;
         } catch (Exception e) {
             throw new ImportParserException(e);

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

@@ -17,7 +17,6 @@
 package de.dennisguse.opentracks.util;
 
 import android.app.Dialog;
-import android.app.ProgressDialog;
 import android.content.Context;
 import android.content.DialogInterface;
 
@@ -53,36 +52,4 @@ public class DialogUtils {
                 .setTitle(titleId).create();
     }
 
-    /**
-     * Creates a horizontal progress dialog.
-     *
-     * @param context          the context
-     * @param messageId        the progress message id
-     * @param onCancelListener the cancel listener
-     * @param formatArgs       the format arguments for the messageId
-     */
-    public static ProgressDialog createHorizontalProgressDialog(Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
-        return createProgressDialog(context, messageId, onCancelListener, formatArgs);
-    }
-
-    /**
-     * Creates a progress dialog.
-     *
-     * @param context          the context
-     * @param messageId        the progress message id
-     * @param onCancelListener the cancel listener
-     * @param formatArgs       the format arguments for the message id
-     */
-    private static ProgressDialog createProgressDialog(final Context context, int messageId, DialogInterface.OnCancelListener onCancelListener, Object... formatArgs) {
-        final ProgressDialog progressDialog = new ProgressDialog(context, R.style.ThemeCustomNotTransparentDialog);
-        progressDialog.setCancelable(true);
-        progressDialog.setCanceledOnTouchOutside(false);
-        progressDialog.setIcon(R.drawable.ic_dialog_info_24dp);
-        progressDialog.setIndeterminate(true);
-        progressDialog.setMessage(context.getString(messageId, formatArgs));
-        progressDialog.setOnCancelListener(onCancelListener);
-        progressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
-        progressDialog.setTitle(R.string.generic_progress_title);
-        return progressDialog;
-    }
 }

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

@@ -15,7 +15,7 @@ import de.dennisguse.opentracks.util.UnitConversions;
 public class IntervalStatisticsModel {
 
     private IntervalStatistics intervalStats;
-    private List<TrackPoint> trackPoints = new ArrayList<>();
+    private final List<TrackPoint> trackPoints = new ArrayList<>();
 
     public IntervalStatistics getIntervalStats(boolean metricUnits, @Nullable IntervalOption interval) {
         synchronized (trackPoints) {
@@ -55,7 +55,7 @@ public class IntervalStatisticsModel {
         OPTION_20(20),
         OPTION_50(50);
 
-        private int value;
+        private final int value;
 
         IntervalOption(int value) {
             this.value = value;