Listener that gets notified when MapView is fully initialized and ready to handle all operations, which means that map scene is loaded and drawing surface is ready to render a map.

Whenever there is a need to call any map view related functions directly after the Activity resumes, onMapViewReady() should be used for this purpose, as it guarantees that those operations will work. It is not recommended to call map view functionality directly from Activity's onResume().

There are few typical moments in the lifecycle where it's useful to execute map view related operations:

• After map is shown for the very first time - use MapScene.LoadSceneCallback that is passed to MapScene.loadScene(MapScheme, MapScene.LoadSceneCallback).
• After the Activity is resumed - use OnReadyListener that is registered from within MapScene.LoadSceneCallback the first time map scene is loaded.
• Every time the Activity is resumed, including after the map scene is first loaded - this combines previous two cases. Use OnReadyListener that is registered right after MapView is created, but before map scene is loaded.