title: Xamarin-Forms | Android - Reference image in GroundOverlayOptions
body: <p>I am using the <code>Android.gms.maps</code> class to create a custom renderer google map in my Xamarin Forms app, for android phones. I am looking to add an image to my map using <code>GroundOverlayOptions</code></p>
  
  <pre><code>    GroundOverlayOptions newarkMap = new GroundOverlayOptions()
      .InvokeImage(BitmapDescriptorFactory.FromResource(/*My image?*/))
      .position(e.Point, 8600f, 6500f);
       map.AddGroundOverlay(newarkMap);
  </code></pre>
  
  <p>I need the images resource ID in the commented section of my code. How do I find out an images' resource ID? Is there an alternative way to do it?</p>