Rotate a map marker when screen rotates?

Question

I'm unable to make my custom marker in an Android App Rotate when using Google Maps API v2. I want to show the rotation like it occurs in the Uber App. I've set the flat property on the Marker, but it doesn't help. Following is the snippet

Marker marker = map.addMarker(new MarkerOptions().position(latLng).icon(BitmapDescriptorFactory.fromResource(R.drawable.vehicle_marker)).flat(true).anchor(0.5f,0.5f));

Answer 1

You can do it by using devices bearing or follow this tutorial.

Create a marker which is is perfect for bearing updates.

private Marker marker;

// Create this marker only once; probably in your onMapReady() method
marker = mGoogleMap.addMarker(new MarkerOptions()
        .position(new LatLng(myLatitude, myLongitude))
        .flat(true));

Get the bearing updates by using getBearing() method from Location object

  if (mLastLocation.hasBearing()) {
     marker.setRotation(mLocation.getBearing());
    }
     //if following the linked tutorial
    // marker.setRotation((float) azimuth);

Aware about this also when you using it.

Answer 2

You could try like this

Marker marker = map.addMarker(new MarkerOptions().position(latLng).icon(BitmapDescriptorFactory.fromResource(R.drawable.vehicle_marker)).flat(true).anchor(0.5f,0.5f).rotation(180));