how to detect when TileOverlay has completed downloading tiles?

问题

I'm using multiple TileOverlay objects as "frames" for my map animation. When an TileOverlay is made visible (via TileOverlay.setVisible(true)), it will start downloading the tiles. How can I detect when the tiles for the overlay have been downloaded and displayed?

回答1:

It's not possible to know from the API if all visible Tiles are downloaded and displayed.

If you want to know when a single Tile is downloaded, you may put some code before return in TileProvider.getTile. This way you can count downloaded tiles and have some estimates on your original question.

回答2:

You should use OnMapLoadedCallback

mMap.setOnMapLoadedCallback(new GoogleMap.OnMapLoadedCallback() {
        @Override
        public void onMapLoaded() {
            //Your code
        }
    });

来源：https://stackoverflow.com/questions/16380546/how-to-detect-when-tileoverlay-has-completed-downloading-tiles