TileProvider

AI-generated Key Takeaways

• TileProvider is an interface for a class that provides tile images for a TileOverlay.

• Implementations of TileProvider must be threadsafe as method calls might come from multiple threads.

• The NO_TILE field is a stub used to indicate that no tile exists for a specific coordinate.

• The getTile method returns the Tile to be used for a given tile coordinate, with parameters for x, y, and zoom.

public interface TileProvider

Known Indirect Subclasses UrlTileProvider UrlTileProvider A partial implementation of TileProvider that only requires a URL that points to an image to be provided.

An interface for a class that provides the tile images for a TileOverlay. For information about the tile coordinate system, see TileOverlay.

Calls to methods in this interface might be made from multiple threads so implementations of this interface must be threadsafe.

Field Summary

public static final Tile

NO_TILE

Stub tile that is used to indicate that no tile exists for a specific tile coordinate.

Public Method Summary

abstract Tile

getTile(int x, int y, int zoom) Returns the tile to be used for this tile coordinate.

Fields

public static final Tile NO_TILE

Stub tile that is used to indicate that no tile exists for a specific tile coordinate.

Public Methods

public abstract Tile getTile (int x, int y, int zoom)

Returns the tile to be used for this tile coordinate.

Parameters

x	The x coordinate of the tile. This will be in the range [0, 2^zoom - 1] inclusive.
y	The y coordinate of the tile. This will be in the range [0, 2^zoom - 1] inclusive.
zoom	The zoom level of the tile. This will be in the range [ GoogleMap.getMinZoomLevel, GoogleMap.getMaxZoomLevel] inclusive.

Returns

• the Tile to be used for this tile coordinate. If you do not wish to provide a tile for this tile coordinate, return NO_TILE. If the tile could not be found at this point in time, return null and further requests might be made with an exponential backoff.