Java OpenStreetMapTileProviderConstants.DEBUGMODE属性代码示例

private boolean createFolderAndCheckIfExists(final File pFile) {
	if (pFile.mkdirs()) {
		return true;
	}
	if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
		Log.d(IMapView.LOGTAG,"Failed to create " + pFile + " - wait and check again");
	}

	// if create failed, wait a bit in case another thread created it
	try {
		Thread.sleep(500);
	} catch (final InterruptedException ignore) {
	}
	// and then check again
	if (pFile.exists()) {
		if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
			Log.d(IMapView.LOGTAG,"Seems like another thread created " + pFile);
		}
		return true;
	} else {
		if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
			Log.d(IMapView.LOGTAG,"File still doesn't exist: " + pFile);
		}
		return false;
	}
}
 

public SafeTileWriter(Context context) {

		if (context.checkCallingOrSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) {
			safeTilePathBase = OpenStreetMapTileProviderConstants.TILE_PATH_BASE;
		} else {
			safeTilePathBase = new File(context.getExternalCacheDir(), "tiles");
		}

		// do this in the background because it takes a long time
		final Thread t = new Thread() {
			@Override
			public void run() {
				mUsedCacheSpace = 0; // because it's static

				calculateDirectorySize(safeTilePathBase);

				if (mUsedCacheSpace > OpenStreetMapTileProviderConstants.TILE_MAX_CACHE_SIZE_BYTES) {
					cutCurrentCache();
				}
				if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
					Log.d(IMapView.LOGTAG,"Finished init thread");
				}
			}
		};
		t.setPriority(Thread.MIN_PRIORITY);
		t.start();
	}
 

@Override
public Drawable loadTile(final MapTileRequestState pState) throws CantContinueException {

	ITileSource tileSource = mTileSource.get();
	if (tileSource == null) {
		return null;
	}

	final MapTile tile = pState.getMapTile();

	// if there's no sdcard then don't do anything
	if (!getSdCardAvailable()) {
		if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
			Log.d(IMapView.LOGTAG,"No sdcard - do nothing for tile: " + tile);
		}
		return null;
	}

	// Check the tile source to see if its file is available and if so, then render the
	// drawable and return the tile
	final File file = new File(safeTilePathBase,
			tileSource.getTileRelativeFilenameString(tile) + OpenStreetMapTileProviderConstants.TILE_PATH_EXTENSION);
	if (file.exists()) {

		try {
			final Drawable drawable = tileSource.getDrawable(file.getPath());

			// Check to see if file has expired
			final long now = System.currentTimeMillis();
			final long lastModified = file.lastModified();
			final boolean fileExpired = lastModified < now - mMaximumCachedFileAge;

			if (fileExpired && drawable != null) {
				if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
					Log.d(IMapView.LOGTAG,"Tile expired: " + tile);
				}
				ExpirableBitmapDrawable.setDrawableExpired(drawable);
			}

			return drawable;
		} catch (final LowMemoryException e) {
			// low memory so empty the queue
			Log.w(IMapView.LOGTAG,"LowMemoryException downloading MapTile: " + tile + " : " + e);
			throw new CantContinueException(e);
		}
	}

	// If we get here then there is no file in the file cache
	return null;
}