@Override
public Drawable loadTile(final MapTileRequestState pState) {
if (mTileSource == null) {
return null;
}
final MapTile pTile = pState.getMapTile();
// if there's no sdcard then don't do anything
if (!getSdCardAvailable()) {
if (DEBUGMODE) {
logger.debug("No sdcard - do nothing for tile: " + pTile);
}
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(
TILE_PATH_BASE,
mTileSource.getTileRelativeFilenameString(pTile) + TILE_PATH_EXTENSION);
if (file.exists()) {
// 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) {
// If the file has not expired, then render it and return it!
final Drawable drawable = mTileSource.getDrawable(file.getPath());
return drawable;
} else {
// If the file has expired then we render it, but we return it as a candidate
// and then fail on the request. This allows the tile to be loaded, but also
// allows other tile providers to do a better job.
final Drawable drawable = mTileSource.getDrawable(file.getPath());
tileCandidateLoaded(pState, drawable);
return null;
}
}
// If we get here then there is no file in the file cache
return null;
}
@Override
public Drawable loadTile(final MapTileRequestState pState) {
ITileSource tileSource = mTileSource.get();
if (tileSource == null) {
return null;
}
final MapTile pTile = 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: " + pTile);
}
return null;
}
InputStream inputStream = null;
try {
if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
Log.d(IMapView.LOGTAG, "Tile doesn't exist: " + pTile);
}
inputStream = getInputStream(pTile, tileSource);
if (inputStream != null) {
if (OpenStreetMapTileProviderConstants.DEBUGMODE) {
Log.d(IMapView.LOGTAG, "Use tile from archive: " + pTile);
}
final Drawable drawable = tileSource.getDrawable(inputStream);
return drawable;
}
} catch (final Throwable e) {
Log.e(IMapView.LOGTAG, "Error loading tile", e);
} finally {
if (inputStream != null) {
StreamUtils.closeStream(inputStream);
}
}
return null;
}