InformingEventsToBus.java

/**
Begin of the journey when index of LatLng in list will be 0.
**/
if (index == 0) {
  BeginJourneyEvent beginJourneyEvent = new BeginJourneyEvent();
  beginJourneyEvent.setBeginLatLng(startPosition);
  JourneyEventBus.getInstance().setOnJourneyBegin(beginJourneyEvent);
}
/**
End of the journey when index of LatLng in list will be last that is size()-1.
**/
 if (index == polyLineList.size() - 1) {
 EndJourneyEvent endJourneyEvent = new EndJourneyEvent();
 endJourneyEvent.setEndJourneyLatLng(
      new LatLng(polyLineList.get(index).latitude,
                 polyLineList.get(index).longitude));
 JourneyEventBus.getInstance().setOnJourneyEnd(endJourneyEvent);
}

/**
In CallBack of ValueAnimator we can get current location as
**/
CurrentJourneyEvent currentJourneyEvent = new CurrentJourneyEvent();
currentJourneyEvent.setCurrentLatLng(newPos);
JourneyEventBus.getInstance().setOnJourneyUpdate(currentJourneyEvent);