Idle: TrackRecordingManager creates IDLE TrackPoints.

Fixes of #1187.

src/main/java/de/dennisguse/opentracks/services/handlers/TrackPointCreator.java

@@ -36,16 +36,11 @@ public class TrackPointCreator implements SharedPreferences.OnSharedPreferenceCh
     private Clock clock = new MonotonicClock();
     private SensorManager sensorManager;
 
-    public TrackPointCreator(Callback service, Context context, Handler handler) {
+    public TrackPointCreator(Callback service) {
         this.service = service;
         this.sensorManager = new SensorManager(this);
     }
 
-    @VisibleForTesting
-    TrackPointCreator(Callback service) {
-        this.service = service;
-    }
-
     public synchronized void start(@NonNull Context context, @NonNull Handler handler) {
         this.context = context;
 
@@ -106,6 +101,13 @@ public class TrackPointCreator implements SharedPreferences.OnSharedPreferenceCh
         return segmentEnd;
     }
 
+    public synchronized TrackPoint createIdle() {
+        TrackPoint idle = new TrackPoint(TrackPoint.Type.IDLE, createNow());
+        addSensorData(idle);
+        reset();
+        return idle;
+    }
+
     public Pair<TrackPoint, SensorDataSet> createCurrentTrackPoint(@Nullable TrackPoint lastTrackPointUISpeed, @Nullable TrackPoint lastTrackPointUIAltitude, @Nullable TrackPoint lastStoredTrackPointWithLocation) {
         TrackPoint currentTrackPoint = new TrackPoint(TrackPoint.Type.TRACKPOINT, createNow());