I created a simple MapActivity on my android and discovered that its MapView can\'t be zoomed in to more than level 19. The zoom-in button just greys out. Calling the zoomIn
The maximum zoom level depends on the area of the map you are in.
You can get the maximum zoom level available by calling #getMaxZoomLevel() in your MapView. That's the closest zoom you will be able to get, no matter what happens in the official Google Maps application.