onMapClick
Called when the user makes a tap gesture on the map, but only if none of the overlays of the map handled the gesture.
Implementations of this method are NOT invoked on Android's Main thread
Return
true if the listener has consumed the event (i.e., the default behavior should not occur); false otherwise (i.e., the default behavior should occur).
Parameters
point
The point on the ground (projected from the screen point) that was tapped.
locationList
list of MPLocation found at clicked point