Trackbook got a notification. Double tracking while showing the map removed. While recording the track is now red. Bug fixes.

app/src/main/java/org/y20k/trackbook/MainActivity.java

@@ -18,13 +18,18 @@ package org.y20k.trackbook;
 
 import android.Manifest;
 import android.annotation.TargetApi;
+import android.content.BroadcastReceiver;
+import android.content.Context;
 import android.content.Intent;
+import android.content.IntentFilter;
 import android.content.pm.PackageManager;
+import android.location.Location;
 import android.os.Build;
 import android.os.Bundle;
 import android.support.design.widget.FloatingActionButton;
 import android.support.design.widget.Snackbar;
 import android.support.v4.content.ContextCompat;
+import android.support.v4.content.LocalBroadcastManager;
 import android.support.v7.app.AppCompatActivity;
 import android.support.v7.widget.Toolbar;
 import android.view.Menu;
@@ -55,8 +60,10 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
     private boolean mTracking;
     private boolean mPermissionsGranted;
     private List<String> mMissingPermissions;
+    private View mRootView;
     private FloatingActionButton mFloatingActionButton;
     private MainActivityFragment mMainActivityFragment;
+    private BroadcastReceiver mTrackingStoppedReceiver;
 
 
     @Override
@@ -66,7 +73,7 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
         // set state of tracking
         mTracking = false;
         if (savedInstanceState != null) {
-            mTracking = savedInstanceState.getBoolean(INSTANCE_TRACKING_STARTED, false);
+            mTracking = savedInstanceState.getBoolean(INSTANCE_TRACKING_STATE, false);
         }
 
         // check permissions on Android 6 and higher
@@ -85,6 +92,11 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
         // set up main layout
         setupLayout();
 
+        // register broadcast receiver for stopped tracking
+        mTrackingStoppedReceiver = createTrackingStoppedReceiver();
+        IntentFilter trackingStoppedIntentFilter = new IntentFilter(ACTION_TRACKING_STOPPED);
+        LocalBroadcastManager.getInstance(this).registerReceiver(mTrackingStoppedReceiver, trackingStoppedIntentFilter);
+
     }
 
 
@@ -102,9 +114,9 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
         // handle action bar options menu selection
         switch (item.getItemId()) {
 
-            // CASE SETTINGS
+            // CASE ABOUT
-            case R.id.action_settings:
+            case R.id.action_bar_about:
-                LogHelper.v(LOG_TAG, "Settings was selected");
+                LogHelper.v(LOG_TAG, "About was selected"); // TODO remove
                 return true;
 
             // CASE DEFAULT
@@ -116,7 +128,7 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
 
     @Override
     protected void onSaveInstanceState(Bundle outState) {
-        outState.putBoolean(INSTANCE_TRACKING_STARTED, mTracking);
+        outState.putBoolean(INSTANCE_TRACKING_STATE, mTracking);
         super.onSaveInstanceState(outState);
     }
 
@@ -132,6 +144,15 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
     }
 
 
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+
+        // disable  broadcast receiver
+        LocalBroadcastManager.getInstance(this).unregisterReceiver(mTrackingStoppedReceiver);
+    }
+
+
     @Override
     public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
         switch (requestCode) {
@@ -213,31 +234,33 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
     /* Handles tap on the record button */
     private void handleFloatingActionButtonClick(View view) {
         if (mTracking) {
+            // show snackbar
             Snackbar.make(view, R.string.snackbar_message_tracking_stopped, Snackbar.LENGTH_SHORT).setAction("Action", null).show();
 
             // change state
-            mFloatingActionButton.setImageResource(R.drawable.ic_fiber_manual_record_white_24dp);
+            // --> is handled by broadcast receiver
-            mTracking = false;
 
             // stop tracker service
             Intent intent = new Intent(this, TrackerService.class);
             intent.setAction(ACTION_STOP);
             startService(intent);
-            LogHelper.v(LOG_TAG, "Stopping tracker service.");
-
 
         } else {
+            // show snackbar
             Snackbar.make(view, R.string.snackbar_message_tracking_started, Snackbar.LENGTH_SHORT).setAction("Action", null).show();
 
             // change state
-            mFloatingActionButton.setImageResource(R.drawable.ic_fiber_manual_record_red_24dp);
             mTracking = true;
+            setFloatingActionButtonState();
+
+            // get last location from MainActivity Fragment
+            Location lastLocation = mMainActivityFragment.getCurrentBestLocation();
 
             // start tracker service
             Intent intent = new Intent(this, TrackerService.class);
             intent.setAction(ACTION_START);
+            intent.putExtra(EXTRA_LAST_LOCATION, lastLocation);
             startService(intent);
-            LogHelper.v(LOG_TAG, "Starting tracker service.");
         }
 
         // update tracking state in MainActivityFragment
@@ -274,4 +297,20 @@ public class MainActivity extends AppCompatActivity implements TrackbookKeys {
         return permissions;
     }
 
+
+    /* Creates receiver for stopped tracking */
+    private BroadcastReceiver createTrackingStoppedReceiver() {
+        return new BroadcastReceiver() {
+            @Override
+            public void onReceive(Context context, Intent intent) {
+                // change state
+                mTracking = false;
+                setFloatingActionButtonState();
+
+                // pass tracking state to MainActivityFragment
+                mMainActivityFragment.setTrackingState(false);
+            }
+        };
+    }
+
 }

app/src/main/java/org/y20k/trackbook/MainActivityFragment.java

@@ -74,7 +74,8 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     private ItemizedIconOverlay mMyLocationOverlay;
     private ItemizedIconOverlay mTrackOverlay;
     private Location mCurrentBestLocation;
-    private boolean mTacking;
+    private boolean mTrackerServiceRunning;
+    private boolean mLocalTrackerRunning;
 
 
     /* Constructor (default) */
@@ -99,16 +100,11 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         }
 
         // restore tracking state
-        mTacking = false;
+        mTrackerServiceRunning = false;
         if (savedInstanceState != null) {
-            mTacking = savedInstanceState.getBoolean(INSTANCE_TRACKING_STARTED, false);
+            mTrackerServiceRunning = savedInstanceState.getBoolean(INSTANCE_TRACKING_STATE, false);
         }
 
-        // register broadcast receiver for new WayPoints
-        mTrackUpdatedReceiver = createTrackUpdatedReceiver();
-        IntentFilter trackUpdatedIntentFilter = new IntentFilter(ACTION_TRACK_UPDATED);
-        LocalBroadcastManager.getInstance(mActivity).registerReceiver(mTrackUpdatedReceiver, trackUpdatedIntentFilter);
-
         // acquire reference to Location Manager
         mLocationManager = (LocationManager) mActivity.getSystemService(Context.LOCATION_SERVICE);
 
@@ -134,6 +130,11 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
             mCurrentBestLocation = LocationHelper.determineLastKnownLocation(mLocationManager);
         }
 
+        // register broadcast receiver for new WayPoints
+        mTrackUpdatedReceiver = createTrackUpdatedReceiver();
+        IntentFilter trackUpdatedIntentFilter = new IntentFilter(ACTION_TRACK_UPDATED);
+        LocalBroadcastManager.getInstance(mActivity).registerReceiver(mTrackUpdatedReceiver, trackUpdatedIntentFilter);
+
     }
 
 
@@ -165,7 +166,7 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
             mCurrentBestLocation = savedInstanceState.getParcelable(INSTANCE_CURRENT_LOCATION);
         } else if (mCurrentBestLocation != null) {
             // fallback or first run: set map to current position
-            GeoPoint position = new GeoPoint(mCurrentBestLocation.getLatitude(), mCurrentBestLocation.getLongitude());
+            GeoPoint position = convertToGeoPoint(mCurrentBestLocation);
             mController.setCenter(position);
             mController.setZoom(16);
         }
@@ -184,8 +185,8 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         mMapView.getOverlays().add(compassOverlay);
 
         // mark user's location on map
-        if (mCurrentBestLocation != null) {
+        if (mCurrentBestLocation != null && !mTrackerServiceRunning) {
-            mMyLocationOverlay = MapHelper.createMyLocationOverlay(mActivity, mCurrentBestLocation, LocationHelper.isNewLocation(mCurrentBestLocation), mTacking);
+            mMyLocationOverlay = MapHelper.createMyLocationOverlay(mActivity, mCurrentBestLocation, LocationHelper.isNewLocation(mCurrentBestLocation));
             mMapView.getOverlays().add(mMyLocationOverlay);
         }
 
@@ -197,8 +198,21 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     public void onResume() {
         super.onResume();
 
-        // start tracking position
+        // start preliminary tracking - if no TrackerService is running
-        startFindingLocation();
+        if (!mTrackerServiceRunning) {
+            startPreliminaryTracking();
+        }
+
+        // center map on current position - if TrackerService is running
+        if (mTrackerServiceRunning) {
+            mController.setCenter(convertToGeoPoint(mCurrentBestLocation));
+        }
+
+        // draw track on map - if available
+        if (mTrack != null) {
+            drawTrackOverlay(mTrack);
+        }
+
     }
 
 
@@ -206,8 +220,8 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     public void onPause() {
         super.onPause();
 
-        // disable location listeners
+        // disable preliminary location listeners
-        LocationHelper.removeLocationListeners(mLocationManager, mGPSListener, mNetworkListener);
+        stopPreliminaryTracking();
     }
 
 
@@ -215,9 +229,6 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     public void onDestroyView(){
         super.onDestroyView();
 
-        // unregister broadcast receiver
-        LocalBroadcastManager.getInstance(mActivity).unregisterReceiver(mTrackUpdatedReceiver);
-
         // deactivate map
         mMapView.onDetach();
     }
@@ -228,6 +239,9 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         // reset first start state
         mFirstStart = true;
 
+        // disable  broadcast receivers
+        LocalBroadcastManager.getInstance(mActivity).unregisterReceiver(mTrackUpdatedReceiver);
+
         super.onDestroy();
     }
 
@@ -239,7 +253,7 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         switch (item.getItemId()) {
 
             // CASE MY LOCATION
-            case R.id.action_my_location:
+            case R.id.action_bar_my_location:
 
                 Toast.makeText(mActivity, mActivity.getString(R.string.toast_message_my_location), Toast.LENGTH_LONG).show();
 
@@ -253,12 +267,11 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
                 GeoPoint position;
                 if (mCurrentBestLocation != null) {
                     // app has a current best estimate location
-                    position = new GeoPoint(mCurrentBestLocation.getLatitude(), mCurrentBestLocation.getLongitude());
                 } else {
                     // app does not have any location fix
                     mCurrentBestLocation = LocationHelper.determineLastKnownLocation(mLocationManager);
-                    position = new GeoPoint(mCurrentBestLocation.getLatitude(), mCurrentBestLocation.getLongitude());
                 }
+                position = convertToGeoPoint(mCurrentBestLocation);
 
                 // center map on current position
                 mController.setCenter(position);
@@ -284,26 +297,45 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         outState.putInt(INSTANCE_ZOOM_LEVEL, mMapView.getZoomLevel());
         outState.putParcelable(INSTANCE_CURRENT_LOCATION, mCurrentBestLocation);
         outState.putParcelable(INSTANCE_TRACK, mTrack);
-        outState.putBoolean(INSTANCE_TRACKING_STARTED, mTacking);
+        outState.putBoolean(INSTANCE_TRACKING_STATE, mTrackerServiceRunning);
         super.onSaveInstanceState(outState);
     }
 
 
-    /* Sets tracking state */
+    /* Setter for tracking state */
-    public void setTrackingState (boolean trackingStarted) {
+    public void setTrackingState (boolean trackingState) {
-        mTacking = trackingStarted;
+        mTrackerServiceRunning = trackingState;
+
+        // turn on/off tracking for MainActivity Fragment - prevent double tracking
+        if (mTrackerServiceRunning) {
+            stopPreliminaryTracking();
+        } else if (!mLocalTrackerRunning){
+            startPreliminaryTracking();
+            if (mTrack != null) {
+                drawTrackOverlay(mTrack);
+            }
+        }
+
+        // update marker
         updateMyLocationMarker();
+        LogHelper.v(LOG_TAG, "TrackingState: " + trackingState);
     }
 
 
-    /* Start finding location for map */
+    /* Getter for current best location */
-    private void startFindingLocation() {
+    public Location getCurrentBestLocation() {
+        return mCurrentBestLocation;
+    }
+
+
+    /* Start preliminary tracking for map */
+    private void startPreliminaryTracking() {
+        mLocalTrackerRunning = true;
         // create location listeners
         List locationProviders = mLocationManager.getProviders(true);
         if (locationProviders.contains(LocationManager.GPS_PROVIDER)) {
             mGPSListener = createLocationListener();
         }
-
         if (locationProviders.contains(LocationManager.NETWORK_PROVIDER)) {
             mNetworkListener = createLocationListener();
         }
@@ -313,6 +345,14 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     }
 
 
+    /* Removes gps and network location listeners */
+    private void stopPreliminaryTracking() {
+        mLocalTrackerRunning = false;
+        // remove listeners
+        LocationHelper.removeLocationListeners(mLocationManager, mGPSListener, mNetworkListener);
+    }
+
+
     /* Creates listener for changes in location status */
     private LocationListener createLocationListener() {
         return new LocationListener() {
@@ -321,7 +361,6 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
                 if (LocationHelper.isBetterLocation(location, mCurrentBestLocation)) {
                     // save location
                     mCurrentBestLocation = location;
-                    LogHelper.v(LOG_TAG, "Location isBetterLocation(!): " + location.getProvider()); // TODO remove
                     // mark user's new location on map and remove last marker
                     updateMyLocationMarker();
                 }
@@ -345,15 +384,18 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
     /* Updates marker for current user location  */
     private void updateMyLocationMarker() {
         mMapView.getOverlays().remove(mMyLocationOverlay);
-        mMyLocationOverlay = MapHelper.createMyLocationOverlay(mActivity, mCurrentBestLocation, LocationHelper.isNewLocation(mCurrentBestLocation),mTacking);
+        // only update while not tracking
-        mMapView.getOverlays().add(mMyLocationOverlay);
+        if (!mTrackerServiceRunning) {
+            mMyLocationOverlay = MapHelper.createMyLocationOverlay(mActivity, mCurrentBestLocation, LocationHelper.isNewLocation(mCurrentBestLocation));
+            mMapView.getOverlays().add(mMyLocationOverlay);
+        }
     }
 
 
     /* Draws track onto overlay */
     private void drawTrackOverlay(Track track) {
         mMapView.getOverlays().remove(mTrackOverlay);
-        mTrackOverlay = MapHelper.createTrackOverlay(mActivity, track);
+        mTrackOverlay = MapHelper.createTrackOverlay(mActivity, track, mTrackerServiceRunning);
         mMapView.getOverlays().add(mTrackOverlay);
     }
 
@@ -370,16 +412,29 @@ public class MainActivityFragment extends Fragment implements TrackbookKeys {
         return new BroadcastReceiver() {
             @Override
             public void onReceive(Context context, Intent intent) {
-                if (intent.hasExtra(EXTRA_TRACK)) {
+                if (intent.hasExtra(EXTRA_TRACK) && intent.hasExtra(EXTRA_LAST_LOCATION)) {
+                    // draw track on map
                     mTrack = intent.getParcelableExtra(EXTRA_TRACK);
                     drawTrackOverlay(mTrack);
                     Toast.makeText(mActivity, "New WayPoint.", Toast.LENGTH_LONG).show(); // TODO Remove
+                    // center map over last location
+                    mCurrentBestLocation = intent.getParcelableExtra(EXTRA_LAST_LOCATION);
+                    mController.setCenter(convertToGeoPoint(mCurrentBestLocation));
+                    // clear intent
+                    intent.removeExtra(EXTRA_TRACK);
+                    intent.removeExtra(EXTRA_LAST_LOCATION);
                 }
             }
         };
     }
 
 
+    /* Converts Location to GeoPoint */
+    private GeoPoint convertToGeoPoint (Location location) {
+        return new GeoPoint(location.getLatitude(), location.getLongitude());
+    }
+
+
     /* Saves state of map */
     private void saveMaoState(Context context) {
         SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);

app/src/main/java/org/y20k/trackbook/TrackerService.java

@@ -32,6 +32,7 @@ import org.y20k.trackbook.core.Track;
 import org.y20k.trackbook.core.WayPoint;
 import org.y20k.trackbook.helpers.LocationHelper;
 import org.y20k.trackbook.helpers.LogHelper;
+import org.y20k.trackbook.helpers.NotificationHelper;
 import org.y20k.trackbook.helpers.TrackbookKeys;
 
 import java.util.List;
@@ -73,27 +74,40 @@ public class TrackerService extends Service implements TrackbookKeys {
             // create a new track
             mTrack = new Track();
 
-            // add first location to track
+            // get last location
-            mCurrentBestLocation = LocationHelper.determineLastKnownLocation(mLocationManager);
+            if (intent.hasExtra(EXTRA_LAST_LOCATION)) {
+                mCurrentBestLocation = intent.getParcelableExtra(EXTRA_LAST_LOCATION);
+            }
+            //  get last location - fallback
+            if (mCurrentBestLocation == null) {
+                mCurrentBestLocation = LocationHelper.determineLastKnownLocation(mLocationManager);
+            }
+
+            // add last location as waypoint to track
             addWayPointToTrack();
 
             // set timer to retrieve new locations and to prevent endless tracking
-            mTimer = new CountDownTimer(CONSTANT_MAXIMAL_DURATION, CONSTANT_TRACKING_INTERVAL) {
+            mTimer = new CountDownTimer(EIGHT_HOURS_IN_MILLISECONDS, FIFTEEN_SECONDS_IN_MILLISECONDS) {
                 @Override
-                public void onTick(long l) {
+                public void onTick(long millisUntilFinished) {
+                    // update track duration
+                    mTrack.setTrackDuration(EIGHT_HOURS_IN_MILLISECONDS - millisUntilFinished);
+                    // try to add WayPoint to Track
                     addWayPointToTrack();
+                    // update notification
+                    NotificationHelper.update(mTrack, true);
                 }
 
                 @Override
                 public void onFinish() {
-                    // TODO
+                    // remove listeners
+                    stopFindingLocation();
                 }
             };
             mTimer.start();
 
             // create gps and network location listeners
             startFindingLocation();
-
         }
 
         // ACTION STOP
@@ -104,7 +118,7 @@ public class TrackerService extends Service implements TrackbookKeys {
             mTimer.cancel();
 
             // remove listeners
-            LocationHelper.removeLocationListeners(mLocationManager, mGPSListener, mNetworkListener);
+            stopFindingLocation();
         }
 
         // START_STICKY is used for services that are explicitly started and stopped as needed
@@ -124,7 +138,7 @@ public class TrackerService extends Service implements TrackbookKeys {
         LogHelper.v(LOG_TAG, "onDestroy called.");
 
         // remove listeners
-        LocationHelper.removeLocationListeners(mLocationManager, mGPSListener, mNetworkListener);
+        stopFindingLocation();
 
         // cancel notification
         stopForeground(true);
@@ -162,6 +176,7 @@ public class TrackerService extends Service implements TrackbookKeys {
             Intent i = new Intent();
             i.setAction(ACTION_TRACK_UPDATED);
             i.putExtra(EXTRA_TRACK, mTrack);
+            i.putExtra(EXTRA_LAST_LOCATION, mCurrentBestLocation);
             LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(i);
         }
 
@@ -185,11 +200,11 @@ public class TrackerService extends Service implements TrackbookKeys {
             }
 
             public void onProviderEnabled(String provider) {
-                // TODO do something
+                LogHelper.v(LOG_TAG, "Location provider enabled: " +  provider);
             }
 
             public void onProviderDisabled(String provider) {
-                // TODO do something
+                LogHelper.v(LOG_TAG, "Location provider disabled: " +  provider);
             }
         };
     }
@@ -197,7 +212,9 @@ public class TrackerService extends Service implements TrackbookKeys {
 
     /* Creates gps and network location listeners */
     private void startFindingLocation() {
-        LogHelper.v(LOG_TAG, "Setting up location listeners.");
+        LogHelper.v(LOG_TAG, "startFindingLocation"); // TODO remove
+        // put up notification
+        NotificationHelper.show(this,mTrack);
 
         // register location listeners and request updates
         List locationProviders = mLocationManager.getProviders(true);
@@ -210,4 +227,24 @@ public class TrackerService extends Service implements TrackbookKeys {
     }
 
 
+    /* Removes gps and network location listeners */
+    private void stopFindingLocation() {
+        LogHelper.v(LOG_TAG, "stopFindingLocation"); // TODO remove
+        // remove listeners
+        LocationHelper.removeLocationListeners(mLocationManager, mGPSListener, mNetworkListener);
+
+        // notify MainActivityFragment
+        Intent i = new Intent();
+        i.setAction(ACTION_TRACKING_STOPPED);
+        i.putExtra(EXTRA_TRACK, mTrack);
+        i.putExtra(EXTRA_LAST_LOCATION, mCurrentBestLocation);
+        LocalBroadcastManager.getInstance(getApplicationContext()).sendBroadcast(i);
+
+//        // cancel notification
+//        NotificationHelper.stop();
+        // change notification
+        NotificationHelper.update(mTrack, false);
+    }
+
+
 }

app/src/main/java/org/y20k/trackbook/core/Track.java

@@ -16,7 +16,6 @@
 
 package org.y20k.trackbook.core;
 
-import android.content.Context;
 import android.location.Location;
 import android.os.Parcel;
 import android.os.Parcelable;
@@ -27,6 +26,7 @@ import org.y20k.trackbook.helpers.TrackbookKeys;
 
 import java.util.ArrayList;
 import java.util.List;
+import java.util.concurrent.TimeUnit;
 
 
 /**
@@ -39,9 +39,9 @@ public class Track implements TrackbookKeys, Parcelable {
 
 
     /* Main class variables */
-    private Context mContext;
     private List<WayPoint> mWayPoints;
     private float mTrackLength;
+    private long mTrackDuration;
 
 
     /* Constructor */
@@ -72,12 +72,6 @@ public class Track implements TrackbookKeys, Parcelable {
     };
 
 
-    /* Set mContext needed by  */
-    public void setContext(Context context) {
-        mContext = context;
-    }
-
-
     /* Adds new waypoint */
     public WayPoint addWayPoint(Location location) {
         // add up distance
@@ -105,6 +99,12 @@ public class Track implements TrackbookKeys, Parcelable {
     }
 
 
+    /* Setter for duration of track */
+    public void setTrackDuration(long trackDuration) {
+        mTrackDuration = trackDuration;
+    }
+
+
     /* Getter for mWayPoints */
     public List<WayPoint> getWayPoints() {
         return mWayPoints;
@@ -117,12 +117,25 @@ public class Track implements TrackbookKeys, Parcelable {
     }
 
 
+    /* Getter for duration of track */
+    public String getTrackDuration() {
+        return convertToReadableTime(mTrackDuration);
+    }
+
+
+    /* Getter for distance of track */
+    public String getTrackDistance() {
+        float trackDistance = mWayPoints.get(mWayPoints.size()-1).getDistanceToStartingPoint();
+
+        return String.format ("%.0f", trackDistance)  + "m";
+    }
+
+
     /* Getter for location of specific WayPoint */
     public Location getWayPointLocation(int index) {
         return mWayPoints.get(index).getLocation();
     }
 
-
     /* Adds distance to given location to length of track */
     private float addDistanceToTrack(Location location) {
         // get number of previously recorded waypoints
@@ -139,6 +152,14 @@ public class Track implements TrackbookKeys, Parcelable {
     }
 
 
+    /* Converts milliseconds to hh:mm:ss */
+    private String convertToReadableTime(long milliseconds) {
+        return String.format("%02d:%02d:%02d", TimeUnit.MILLISECONDS.toHours(milliseconds),
+                TimeUnit.MILLISECONDS.toMinutes(milliseconds) % TimeUnit.HOURS.toMinutes(1),
+                TimeUnit.MILLISECONDS.toSeconds(milliseconds) % TimeUnit.MINUTES.toSeconds(1));
+    }
+
+
     @Override
     public int describeContents() {
         return 0;

app/src/main/java/org/y20k/trackbook/helpers/LocationHelper.java

@@ -27,19 +27,12 @@ import java.util.List;
 /**
  * LocationHelper class
  */
-public final class LocationHelper {
+public final class LocationHelper implements TrackbookKeys {
 
     /* Define log tag */
     private static final String LOG_TAG = LocationHelper.class.getSimpleName();
 
 
-    /* Main class variables */
-//    private static final int TWO_MINUTES = 1000 * 1000 * 60 * 2;
-    private static final long FIVE_MINUTES = 5L * 60000000000L; // 2 minutes
-    private static final long TWO_MINUTES = 2L * 60000000000L; // 2 minutes
-    private static final long TWENTY_SECONDS = 20000000000L; // 20 seconds
-
-
     /* Determines last known location  */
     public static Location determineLastKnownLocation(LocationManager locationManager) {
         // define variables
@@ -72,13 +65,14 @@ public final class LocationHelper {
             }
         }
 
-        // return best estimate location
+        if (gpsLocation == null) {
-        if (isBetterLocation(networkLocation, gpsLocation)) {
-            LogHelper.v(LOG_TAG, "Best last known location came from: " + networkLocation.getProvider()); // TODO remove
             return networkLocation;
-        } else {
+        } else if (networkLocation == null) {
-            LogHelper.v(LOG_TAG, "Best last known location came from: " + gpsLocation.getProvider()); // TODO remove
             return gpsLocation;
+        } else if (isBetterLocation(gpsLocation, networkLocation)) {
+            return gpsLocation;
+        } else {
+            return networkLocation;
         }
     }
 
@@ -94,8 +88,8 @@ public final class LocationHelper {
 
         // check whether the new location fix is newer or older
         long timeDelta = location.getElapsedRealtimeNanos() - currentBestLocation.getElapsedRealtimeNanos();
-        boolean isSignificantlyNewer = timeDelta > TWO_MINUTES;
+        boolean isSignificantlyNewer = timeDelta > TWO_MINUTES_IN_NANOSECONDS;
-        boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES;
+        boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES_IN_NANOSECONDS;
         boolean isNewer = timeDelta > 0;
 
         // if it's been more than two minutes since the current location, use the new location because the user has likely moved
@@ -118,16 +112,12 @@ public final class LocationHelper {
 
         // determine location quality using a combination of timeliness and accuracy
         if (isMoreAccurate) {
-            LogHelper.v(LOG_TAG, "Location isMoreAccurate: " + location.getProvider()); // TODO remove
             return true;
         } else if (isNewer && !isLessAccurate) {
-            LogHelper.v(LOG_TAG, "Location isNewer && !isLessAccurate: " + location.getProvider()); // TODO remove
             return true;
         } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) {
-            LogHelper.v(LOG_TAG, "Location isNewer && !isSignificantlyLessAccurate && isFromSameProvider: " + location.getProvider()); // TODO remove
             return true;
         }
-        LogHelper.v(LOG_TAG, "Location is not better: " + location.getProvider()); // TODO remove
         return false;
     }
 
@@ -138,7 +128,7 @@ public final class LocationHelper {
             return false;
         } else {
             long locationTime = SystemClock.elapsedRealtimeNanos() - location.getElapsedRealtimeNanos();
-            return locationTime < TWO_MINUTES;
+            return locationTime < TWO_MINUTES_IN_NANOSECONDS;
         }
     }
 
@@ -148,15 +138,15 @@ public final class LocationHelper {
         float distance = newLocation.distanceTo(lastLocation);
         long timeDifference = newLocation.getElapsedRealtimeNanos() - lastLocation.getElapsedRealtimeNanos();
 
-        // distance is bigger than 10 meters and time difference bigger than 20 seconds
+        // distance is bigger than 10 meters and time difference bigger than 12 seconds
-        return distance > 10 && timeDifference >= TWENTY_SECONDS;
+        return distance > 10 && timeDifference >= TWELVE_SECONDS_IN_NANOSECONDS;
     }
 
 
     /* Checks if given location is a stop over */
     public static boolean isStopOver(Location lastLocation, Location newLocation) {
         long timeDifference =  newLocation.getElapsedRealtimeNanos() - lastLocation.getElapsedRealtimeNanos();
-        return timeDifference >= FIVE_MINUTES;
+        return timeDifference >= FIVE_MINUTES_IN_NANOSECONDS;
     }
 
 

app/src/main/java/org/y20k/trackbook/helpers/MapHelper.java

@@ -21,6 +21,7 @@ import android.graphics.drawable.Drawable;
 import android.location.Location;
 import android.support.v7.widget.AppCompatDrawableManager;
 import android.text.format.DateFormat;
+import android.widget.Toast;
 
 import org.osmdroid.util.GeoPoint;
 import org.osmdroid.views.overlay.ItemizedIconOverlay;
@@ -42,17 +43,14 @@ public final class MapHelper {
     private static final String LOG_TAG = MapHelper.class.getSimpleName();
 
 
-    /* Creates icon overlay for current position */
+    /* Creates icon overlay for current position (used in MainActivity Fragment) */
-    public static ItemizedIconOverlay createMyLocationOverlay(Context context, Location currentBestLocation, boolean locationIsNew, boolean trackingStarted) {
+    public static ItemizedIconOverlay createMyLocationOverlay(Context context, Location currentBestLocation, boolean locationIsNew) {
 
         final ArrayList<OverlayItem> overlayItems = new ArrayList<>();
-        LogHelper.v(LOG_TAG, "Location is new? " + locationIsNew + " Provider: " + currentBestLocation.getProvider()); // TODO remove
 
         // create marker
         Drawable newMarker;
-        if (trackingStarted) {
+        if (locationIsNew) {
-            newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_dot_red_24dp);
-        } else if (locationIsNew) {
             newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_dot_blue_24dp);
         } else {
             newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_dot_grey_24dp);
@@ -83,20 +81,62 @@ public final class MapHelper {
 
 
     /* Creates icon overlay for track */
-    public static ItemizedIconOverlay createTrackOverlay(Context context, Track track){
+    public static ItemizedIconOverlay createTrackOverlay(final Context context, Track track, boolean trackingActive){
 
+        WayPoint wayPoint;
+        boolean currentPosition;
+        final int trackSize = track.getSize();
         final List<WayPoint> wayPoints = track.getWayPoints();
         final ArrayList<OverlayItem> overlayItems = new ArrayList<>();
 
-        for (WayPoint wayPoint : wayPoints) {
+        for (int i = 0 ; i < track.getSize() ; i++) {
+            // get waypoint and check if it is current position
+            wayPoint = wayPoints.get(i);
+            currentPosition = i == trackSize - 1;
+
             // create marker
             Drawable newMarker;
-            if (wayPoint.getIsStopOver()) {
+
-                newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_grey_24dp);
+            // CASE 1: Tracking active and waypoint is not current position
-            } else {
+            if (trackingActive && !currentPosition) {
+                if (wayPoint.getIsStopOver()) {
+                    // stop over marker
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_grey_24dp);
+                } else {
+                    // default marker for this case
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_red_24dp);
+                }
+            }
+
+            // CASE 2: Tracking active and waypoint is current position
+            else if (trackingActive && currentPosition) {
+                if (wayPoint.getIsStopOver()) {
+                    // stop over marker
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_dot_grey_24dp);
+                } else {
+                    // default marker for this case
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_dot_red_24dp);
+                }
+            }
+
+            // CASE 3: Tracking not active and waypoint is not current position
+            else if (!trackingActive && !currentPosition) {
+                if (wayPoint.getIsStopOver()) {
+                    // stop over marker
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_grey_24dp);
+                } else {
+                    // default marker for this case
+                    newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_blue_24dp);
+                }
+            }
+
+            // CASE 4: Tracking not active and waypoint is current position
+            else {
+                // default marker
                 newMarker = AppCompatDrawableManager.get().getDrawable(context, R.drawable.ic_my_location_crumb_blue_24dp);
             }
-            final String title = Float.toString(wayPoint.getDistanceToStartingPoint());
+
+            final String title = Float.toString(wayPoint.getDistanceToStartingPoint()) + " (" + wayPoint.getLocation().getProvider() + ")";
             final String description = DateFormat.getDateFormat(context).format(wayPoint.getLocation().getTime());
             final GeoPoint position = new GeoPoint(wayPoint.getLocation().getLatitude(), wayPoint.getLocation().getLongitude());
             OverlayItem overlayItem = new OverlayItem(title, description, position);
@@ -111,6 +151,7 @@ public final class MapHelper {
                 new ItemizedIconOverlay.OnItemGestureListener<OverlayItem>() {
                     @Override
                     public boolean onItemSingleTapUp(final int index, final OverlayItem item) {
+                        Toast.makeText(context, "Measured distance: " + item.getTitle(), Toast.LENGTH_LONG).show(); // TODO make string
                         LogHelper.v(LOG_TAG, "Tap on a track crumb icon detected. Measured distance: " + item.getTitle());
                         return true;
                     }
@@ -125,6 +166,4 @@ public final class MapHelper {
     }
 
 
-
-
 }

app/src/main/java/org/y20k/trackbook/helpers/NotificationHelper.java

@@ -1,7 +1,177 @@
+/**
+ * NotificationHelper.java
+ * Implements the NotificationHelper class
+ * A NotificationHelper creates and configures a notification
+ *
+ * This file is part of
+ * TRACKBOOK - Movement Recorder for Android
+ *
+ * Copyright (c) 2016 - Y20K.org
+ * Licensed under the MIT-License
+ * http://opensource.org/licenses/MIT
+ *
+ * Trackbook uses osmdroid - OpenStreetMap-Tools for Android
+ * https://github.com/osmdroid/osmdroid
+ */
+
 package org.y20k.trackbook.helpers;
 
+import android.app.Notification;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.support.graphics.drawable.VectorDrawableCompat;
+import android.support.v4.app.TaskStackBuilder;
+import android.support.v7.app.NotificationCompat;
+
+import org.y20k.trackbook.MainActivity;
+import org.y20k.trackbook.R;
+import org.y20k.trackbook.TrackerService;
+import org.y20k.trackbook.core.Track;
+
+
 /**
- * Created by solaris on 29/07/16.
+ * NotificationHelper class
  */
-public class NotificationHelper {
+public class NotificationHelper implements TrackbookKeys {
+
+    /* Define log tag */
+    private static final String LOG_TAG = NotificationHelper.class.getSimpleName();
+
+
+    /* Main class variables */
+    private static Notification mNotification;
+    private static Service mService;
+
+    /* Create and put up notification */
+    public static void show(final Service service, Track track) {
+        // save service
+        mService = service;
+
+        // build notification
+        mNotification = getNotificationBuilder(track, true).build();
+
+        // display notification
+        mService.startForeground(TRACKER_SERVICE_NOTIFICATION_ID, mNotification);
+    }
+
+
+    /* Updates the notification */
+    public static void update(Track track, boolean tracking) {
+
+        // build notification
+        mNotification = getNotificationBuilder(track, tracking).build();
+
+        // display updated notification
+        NotificationManager notificationManager = (NotificationManager) mService.getSystemService(Context.NOTIFICATION_SERVICE);
+        notificationManager.notify(TRACKER_SERVICE_NOTIFICATION_ID, mNotification);
+
+        if (!tracking) {
+            // make notification swipe-able
+            mService.stopForeground(false);
+        }
+
+
+    }
+
+
+    /* Stop displaying notification */
+    public static void stop() {
+        if (mService != null) {
+            mService.stopForeground(true);
+        }
+    }
+
+
+    /* Creates a notification builder */
+    private static NotificationCompat.Builder getNotificationBuilder(Track track, boolean tracking) {
+
+        String contentText = mService.getString(R.string.notification_content_distance) + ": " + track.getTrackDistance() + " | " +
+                mService.getString(R.string.notification_content_duration) + " : " +  track.getTrackDuration();
+
+        // explicit intent for notification tap
+        Intent tapActionIntent = new Intent(mService, MainActivity.class);
+
+        // explicit intent for stopping playback
+        Intent stopActionIntent = new Intent(mService, TrackerService.class);
+        stopActionIntent.setAction(ACTION_STOP);
+
+        // artificial back stack for started Activity.
+        // -> navigating backward from the Activity leads to Home screen.
+        TaskStackBuilder stackBuilder = TaskStackBuilder.create(mService);
+//        // backstack: adds back stack for Intent (but not the Intent itself)
+//        stackBuilder.addParentStack(MainActivity.class);
+        // backstack: add explicit intent for notification tap
+        stackBuilder.addNextIntent(tapActionIntent);
+
+        // pending intent wrapper for notification tap
+        PendingIntent tapActionPendingIntent = stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
+        // pending intent wrapper for notification stop action
+        PendingIntent stopActionPendingIntent = PendingIntent.getService(mService, 0, stopActionIntent, 0);
+
+        // construct notification in builder
+        NotificationCompat.Builder builder;
+        builder = new NotificationCompat.Builder(mService);
+        builder.setVisibility(NotificationCompat.VISIBILITY_PUBLIC);
+        builder.setShowWhen(false);
+        builder.setContentIntent(tapActionPendingIntent);
+        builder.setSmallIcon(R.drawable.ic_notification_small_24dp);
+        builder.setLargeIcon(getNotificationIconLarge(tracking));
+        if (tracking) {
+            builder.addAction(R.drawable.ic_stop_white_36dp, mService.getString(R.string.notification_stop), stopActionPendingIntent);
+            builder.setContentTitle(mService.getString(R.string.notification_title_trackbook_running));
+            builder.setContentText(contentText);
+            // third line of text - only appears in expanded view
+            // builder.setSubText();
+        } else {
+            builder.setContentTitle(mService.getString(R.string.notification_title_trackbook_not_running));
+            builder.setContentText(contentText);
+            // third line of text - only appears in expanded view
+            // builder.setSubText();
+        }
+
+        return builder;
+    }
+
+
+    /* Get station image for notification's large icon */
+    private static Bitmap getNotificationIconLarge(boolean tracking) {
+
+        // get dimensions
+        Resources resources = mService.getResources();
+        int height = (int) resources.getDimension(android.R.dimen.notification_large_icon_height);
+        int width = (int) resources.getDimension(android.R.dimen.notification_large_icon_width);
+
+        Bitmap bitmap;
+         if (tracking) {
+             bitmap = getBitmap(R.drawable.ic_notification_large_tracking_48dp);
+         } else {
+             bitmap = getBitmap(R.drawable.ic_notification_large_not_tracking_48dp);
+         }
+
+        return Bitmap.createScaledBitmap(bitmap, width, height, false);
+    }
+
+
+    /* Return a bitmap for a given resource id of a vector drawable */
+    private static Bitmap getBitmap(int resource) {
+        VectorDrawableCompat drawable = VectorDrawableCompat.create(mService.getResources(), resource, null);
+        if (drawable != null) {
+            Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
+            Canvas canvas = new Canvas(bitmap);
+            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
+            drawable.draw(canvas);
+            return bitmap;
+        } else {
+            return null;
+        }
+    }
+
+
+
 }

app/src/main/java/org/y20k/trackbook/helpers/TrackbookKeys.java

@@ -26,9 +26,11 @@ public interface TrackbookKeys {
     public static final String ACTION_START = "org.y20k.transistor.action.START";
     public static final String ACTION_STOP = "org.y20k.transistor.action.STOP";
     public static final String ACTION_TRACK_UPDATED = "TRACK_UPDATED";
+    public static final String ACTION_TRACKING_STOPPED = "TRACKING_STOPPED";
 
     /* EXTRAS */
     public static final String EXTRA_TRACK = "TRACK";
+    public static final String EXTRA_LAST_LOCATION = "LAST_LOCATION";
 
     /* ARGS */
     public static final String ARG_PERMISSIONS_GRANTED = "ArgPermissionsGranted";
@@ -48,21 +50,21 @@ public interface TrackbookKeys {
     public static final String INSTANCE_LONGITUDE = "longitude";
     public static final String INSTANCE_ZOOM_LEVEL = "zoomLevel";
     public static final String INSTANCE_CURRENT_LOCATION = "currentLocation";
-    public static final String INSTANCE_TRACKING_STARTED = "trackingStarted";
+    public static final String INSTANCE_TRACKING_STATE = "trackingState";
     public static final String INSTANCE_TRACK = "track";
 
     /* RESULTS */
 
     /* CONSTANTS */
-    public static final int CONSTANT_MINIMAL_STOP_TIME = 300000; // equals 5 minutes
+    public static final long EIGHT_HOURS_IN_MILLISECONDS = 43200000; // maximum tracking duration
-    public static final long CONSTANT_MAXIMAL_DURATION = 43200000; // equals 8 hours
+    public static final long FIFTEEN_SECONDS_IN_MILLISECONDS = 15000; // timer interval for tracking
-    public static final long CONSTANT_TRACKING_INTERVAL = 15000; // equals 15 seconds
+    public static final long FIVE_MINUTES_IN_NANOSECONDS = 5L * 60000000000L; // determines a stop over
+    public static final long TWO_MINUTES_IN_NANOSECONDS = 2L * 60000000000L; // defines an old location
+    public static final long TWELVE_SECONDS_IN_NANOSECONDS = 12000000000L; // defines a new location
+
 
     /* MISC */
     public static final int REQUEST_CODE_ASK_MULTIPLE_PERMISSIONS = 124;
-    public static final int LOCATION_STATUS_OFFLINE = 0;
+    public static final int TRACKER_SERVICE_NOTIFICATION_ID = 1;
-    public static final int LOCATION_STATUS_OK = 1;
-    public static final int LOCATION_STATUS_GPS_ONLY = 2;
-    public static final int LOCATION_STATUS_NETWORK_ONLY = 3;
 
 }

app/src/main/res/drawable/ic_my_location_crumb_red_24dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="24dp"
+        android:viewportHeight="96.0"
+        android:viewportWidth="96.0"
+        android:width="24dp">
+
+    <path
+        android:fillColor="@color/trackbook_red"
+        android:pathData="M48,48m-24,0a24,24 0,1 1,48 0a24,24 0,1 1,-48 0"/>
+</vector>

app/src/main/res/drawable/ic_my_location_crumb_transparent_24dp.xml

@@ -0,0 +1,5 @@
+<vector android:alpha="0.01" android:height="24dp"
+    android:viewportHeight="24.0" android:viewportWidth="24.0"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="#FF000000" android:pathData="M6,6h12v12H6z"/>
+</vector>

app/src/main/res/drawable/ic_my_location_white_24dp.xml

@@ -4,6 +4,6 @@
         android:viewportWidth="24.0"
         android:viewportHeight="24.0">
     <path
-        android:fillColor="#FFFFFFFF"
+        android:fillColor="@color/trackbook_white"
         android:pathData="M12,8c-2.21,0 -4,1.79 -4,4s1.79,4 4,4 4,-1.79 4,-4 -1.79,-4 -4,-4zM20.94,11c-0.46,-4.17 -3.77,-7.48 -7.94,-7.94L13,1h-2v2.06C6.83,3.52 3.52,6.83 3.06,11L1,11v2h2.06c0.46,4.17 3.77,7.48 7.94,7.94L11,23h2v-2.06c4.17,-0.46 7.48,-3.77 7.94,-7.94L23,13v-2h-2.06zM12,19c-3.87,0 -7,-3.13 -7,-7s3.13,-7 7,-7 7,3.13 7,7 -3.13,7 -7,7z"/>
 </vector>

app/src/main/res/drawable/ic_notification_large_not_tracking_48dp.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="48dp"
+    android:viewportHeight="192.0"
+    android:viewportWidth="192.0"
+    android:width="48dp" >
+    <path
+        android:fillColor="@color/trackbook_blue"
+        android:pathData="M96,96m-96,0a96,96 0,1 1,192 0a96,96 0,1 1,-192 0"/>
+    <path
+        android:fillColor="@color/trackbook_white"
+        android:pathData="M48,96a48,46.5 0,1 0,96 0a48,46.5 0,1 0,-96 0z"/>
+</vector>

app/src/main/res/drawable/ic_notification_large_tracking_48dp.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="48dp"
+    android:viewportHeight="192.0"
+    android:viewportWidth="192.0"
+    android:width="48dp" >
+    <path
+        android:fillColor="@color/trackbook_blue"
+        android:pathData="M96,96m-96,0a96,96 0,1 1,192 0a96,96 0,1 1,-192 0"/>
+    <path
+        android:fillColor="@color/trackbook_red_dark"
+        android:pathData="M48,96a48,46.5 0,1 0,96 0a48,46.5 0,1 0,-96 0z"/>
+</vector>

app/src/main/res/drawable/ic_notification_small_24dp.xml

@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:viewportHeight="96.0"
+    android:viewportWidth="96.0"
+    android:height="24dp"
+    android:width="24dp">
+    <path
+        android:fillColor="@color/trackbook_white"
+        android:pathData="M44,12.99L20.69,8.74L5.12,5.89C2.29,5.38 0,7.44 0,10.49v67.38c0,3.06 2.29,5.96 5.12,6.47l15.57,2.85l22.19,4.05L44,91.46V12.99z"/>
+    <path
+        android:fillColor="@color/trackbook_white"
+        android:pathData="M90.88,5.89L75.31,8.74L53.12,12.79L52,12.99v78.46l23.31,-4.26l15.57,-2.85c2.83,-0.52 5.12,-3.41 5.12,-6.47V10.49C96,7.44 93.71,5.38 90.88,5.89z"/>
+</vector>

app/src/main/res/drawable/ic_stop_white_36dp.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:height="36dp"
+    android:viewportHeight="24.0"
+    android:viewportWidth="24.0"
+    android:width="36dp">
+
+    <path
+        android:fillColor="@color/trackbook_white"
+        android:pathData="M6,6h12v12H6z"/>
+</vector>

app/src/main/res/menu/menu_main.xml

@@ -4,16 +4,16 @@
     tools:context="org.y20k.trackbook.MainActivity">
 
     <item
-        android:id="@+id/action_my_location"
+        android:id="@+id/action_bar_my_location"
         android:icon="@drawable/ic_my_location_white_24dp"
         android:title="@string/menu_my_location"
         android:visible="true"
         app:showAsAction="ifRoom" />
 
     <item
-        android:id="@+id/action_settings"
+        android:id="@+id/action_bar_about"
         android:orderInCategory="100"
-        android:title="@string/menu_settings"
+        android:title="@string/menu_about"
         app:showAsAction="never" />
 
 </menu>

app/src/main/res/values/strings.xml

@@ -3,8 +3,16 @@
     <string name="app_name">Trackbook</string>
 
     <!-- menu entries -->
-    <string name="menu_settings">Settings</string>
     <string name="menu_my_location">My Location</string>
+    <string name="menu_about">About</string>
+
+
+    <!-- notification -->
+    <string name="notification_title_trackbook_running">Trackbook running</string>
+    <string name="notification_title_trackbook_not_running">Trackbook not running</string>
+    <string name="notification_stop">Stop</string>
+    <string name="notification_content_duration">Duration</string>
+    <string name="notification_content_distance">Distance</string>
 
     <!-- snackbar messages -->
     <string name="snackbar_message_tracking_stopped">Tracking stopped</string>