org.osmdroid.tileprovider.modules

Class MapTileModuleProviderBase.TileLoader

java.lang.Object

org.osmdroid.tileprovider.modules.MapTileModuleProviderBase.TileLoader

All Implemented Interfaces:

Runnable

Direct Known Subclasses:

MapTileDownloader.TileLoader, MapTileFileArchiveProvider.TileLoader, MapTileFilesystemProvider.TileLoader

Enclosing class:

MapTileModuleProviderBase

protected abstract class MapTileModuleProviderBase.TileLoader
extends Object
implements Runnable

Load the requested tile. An abstract internal class whose objects are used by worker threads to acquire tiles from servers. It processes tiles from the 'pending' set to the 'working' set as they become available. The key unimplemented method is 'loadTile'.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MapTileModuleProviderBase.TileLoader()

Method Summary

Methods

Modifier and Type	Method and Description
protected abstract android.graphics.drawable.Drawable	loadTile(MapTileRequestState pState) Load the requested tile.
protected MapTileRequestState	nextTile()
protected void	onTileLoaderInit()
protected void	onTileLoaderShutdown()
void	run() This is a functor class of type Runnable.
protected void	tileLoaded(MapTileRequestState pState, android.graphics.drawable.Drawable pDrawable) A tile has loaded.
protected void	tileLoadedExpired(MapTileRequestState pState, android.graphics.drawable.Drawable pDrawable) A tile has loaded but it's expired.
protected void	tileLoadedFailed(MapTileRequestState pState)

Methods inherited from class java.lang.Object

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

Constructor Detail

MapTileModuleProviderBase.TileLoader

protected MapTileModuleProviderBase.TileLoader()

Method Detail

loadTile

protected abstract android.graphics.drawable.Drawable loadTile(MapTileRequestState pState)
                                                        throws MapTileModuleProviderBase.CantContinueException

Load the requested tile.

Parameters:

pState -

Returns:

the tile if it was loaded successfully, or null if failed to load and other tile providers need to be called

Throws:

MapTileModuleProviderBase.CantContinueException

onTileLoaderInit

protected void onTileLoaderInit()

onTileLoaderShutdown

protected void onTileLoaderShutdown()

nextTile

protected MapTileRequestState nextTile()

tileLoaded

protected void tileLoaded(MapTileRequestState pState,
              android.graphics.drawable.Drawable pDrawable)

A tile has loaded.

tileLoadedExpired

protected void tileLoadedExpired(MapTileRequestState pState,
                     android.graphics.drawable.Drawable pDrawable)

A tile has loaded but it's expired. Return it and send request to next provider.

tileLoadedFailed

protected void tileLoadedFailed(MapTileRequestState pState)

run

public final void run()

This is a functor class of type Runnable. The run method is the encapsulated function.

Specified by:

run in interface Runnable