How to change the position of a Marker on a Android Map v2

Question

I need to do the following: I have a Marker on the map and I need to change the position of it. So I tried the following:

MarkerOptions a = new MarkerOptions         


        

Answer 1

Define "marker" outside the function. for the first time, it will be null and "if" condition will be executed. for the second time "else" will be executed.

        Marker marker = null;    
        protected void onPostExecute(Coordinates coordinates) {
        LatLng latLong = new LatLng("lat", "long");
        if (marker == null) {
            MarkerOptions options = new MarkerOptions().position(latLong)
                    .title("Marker Title");
            marker = mMap.addMarker(options);
        }
        else {
            marker.setPosition(latLong);
        }
     mMap.moveCamera(CameraUpdateFactory.newLatLng(latLong));
     mMap.animateCamera(CameraUpdateFactory.zoomTo(16f));
    }