org.osmdroid.tileprovider.modules

Class TileWriter

java.lang.Object

org.osmdroid.tileprovider.modules.TileWriter

All Implemented Interfaces:

IFilesystemCache

public class TileWriter
extends Object
implements IFilesystemCache

An implementation of IFilesystemCache. It writes tiles to the file system cache. If the cache exceeds 600 Mb then it will be trimmed to 500 Mb.

See Also:

OpenStreetMapTileProviderConstants

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static boolean	hasInited
(package private) Thread	initThread

Constructor Summary

Constructors

Constructor and Description
TileWriter()

Method Summary

Modifier and Type	Method and Description
boolean	exists(ITileSource pTileSource, MapTile pTile) return true if the map file for download already exists
static long	getUsedCacheSpace() Get the amount of disk space used by the tile cache.
void	onDetach() Used when the map engine is shutdown, use it to perform any clean up activities and to terminate any background threads
boolean	remove(ITileSource pTileSource, MapTile pTile) Removes a tile from the cache, see issue https://github.com/osmdroid/osmdroid/issues/426
boolean	saveFile(ITileSource pTileSource, MapTile pTile, InputStream pStream) Save an InputStream as the specified tile in the file system cache for the specified tile source.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

hasInited

static boolean hasInited

initThread

Thread initThread

Constructor Detail

TileWriter

public TileWriter()

Method Detail

getUsedCacheSpace

public static long getUsedCacheSpace()

Get the amount of disk space used by the tile cache. This will initially be zero since the used space is calculated in the background.

Returns:

size in bytes

saveFile

public boolean saveFile(ITileSource pTileSource,
                        MapTile pTile,
                        InputStream pStream)

Description copied from interface: IFilesystemCache

Save an InputStream as the specified tile in the file system cache for the specified tile source.

Specified by:

saveFile in interface IFilesystemCache

Parameters:

pTileSource - a tile source

pTile - a tile

pStream - an InputStream

Returns:

onDetach

public void onDetach()

Description copied from interface: IFilesystemCache

Used when the map engine is shutdown, use it to perform any clean up activities and to terminate any background threads

Specified by:

onDetach in interface IFilesystemCache

remove

public boolean remove(ITileSource pTileSource,
                      MapTile pTile)

Description copied from interface: IFilesystemCache

Removes a tile from the cache, see issue https://github.com/osmdroid/osmdroid/issues/426

Specified by:

remove in interface IFilesystemCache

Returns:

true if it was removed, false otherwise

exists

public boolean exists(ITileSource pTileSource,
                      MapTile pTile)

Description copied from interface: IFilesystemCache

return true if the map file for download already exists

Specified by:

exists in interface IFilesystemCache

Returns: