/// On low memory method ///
public void onLowMemory() {
log.info("On low memory : cleaning tiles - size = " + cacheOfImages.size()); // $NON-NLS-1$
clearTiles();
for (RegionAddressRepository r : addressMap.values()) {
r.clearCache();
}
renderer.clearCache();
System.gc();
}
protected Bitmap getRequestedImageTile(TileLoadDownloadRequest req) {
if (req.tileId == null || req.dirWithTiles == null) {
return null;
}
Bitmap cacheBmp = cacheOfImages.get(req.tileId);
if (cacheBmp != null) {
return cacheBmp;
}
if (cacheOfImages.size() > maxImgCacheSize) {
clearTiles();
}
if (req.dirWithTiles.canRead()
&& !asyncLoadingThread.isFileCurrentlyDownloaded(req.fileToSave)
&& !asyncLoadingThread.isFilePendingToDownload(req.fileToSave)) {
long time = System.currentTimeMillis();
if (log.isDebugEnabled()) {
log.debug(
"Start loaded file : "
+ req.tileId
+ " "
+ Thread.currentThread().getName()); // $NON-NLS-1$ //$NON-NLS-2$
}
Bitmap bmp = null;
if (req.tileSource instanceof SQLiteTileSource) {
try {
long[] tm = new long[1];
bmp = ((SQLiteTileSource) req.tileSource).getImage(req.xTile, req.yTile, req.zoom, tm);
if (tm[0] != 0) {
int ts = req.tileSource.getExpirationTimeMillis();
if (ts != -1 && req.url != null && time - tm[0] > ts) {
asyncLoadingThread.requestToDownload(req);
}
}
} catch (OutOfMemoryError e) {
log.error("Out of memory error", e); // $NON-NLS-1$
clearTiles();
}
} else {
File en = new File(req.dirWithTiles, req.tileId);
if (en.exists()) {
try {
bmp = BitmapFactory.decodeFile(en.getAbsolutePath());
int ts = req.tileSource.getExpirationTimeMillis();
if (ts != -1 && req.url != null && time - en.lastModified() > ts) {
asyncLoadingThread.requestToDownload(req);
}
} catch (OutOfMemoryError e) {
log.error("Out of memory error", e); // $NON-NLS-1$
clearTiles();
}
}
}
if (bmp != null) {
cacheOfImages.put(req.tileId, bmp);
if (log.isDebugEnabled()) {
log.debug(
"Loaded file : "
+ req.tileId
+ " "
+ -(time - System.currentTimeMillis())
+ " ms "
+ cacheOfImages.size()); // $NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
}
if (cacheOfImages.get(req.tileId) == null && req.url != null) {
asyncLoadingThread.requestToDownload(req);
}
}
return cacheOfImages.get(req.tileId);
}