In memory cache of tiles
The Tile Pre Cache goal is to: - list the tiles that are near the ones that are currently displayed (border, zoom+-1, ...) - try to find their bitmap using a list of providers - pre-cache those bitmaps into memory cache Doing so you get smoother when panning the map or zooming in/out as the bitmaps are already in memory.
This top-level tile provider allows a consumer to provide an array of modular asynchronous tile providers to be used to obtain map tiles.
This is an abstract class.
To be used by some kind of