Those ones I had already seen. Very good exemple, by the way.
I have only one problem with my app.
I create a Marker, update its position and it doesn't refresh the map. I keep both.
The problem is that My app, connects to a flight sim to collect the position of aircrafts in flight, continously updating ther position.
And the solution to do a quick change of zoom to update, works if the user is not himself zooming in a marker.
Sometimes it couses the map to drift to other area. A self updating window, would solve the problem