private void load(String fileDir) {
		Log.e(TAG, "StorageManager load -  fileDir:" + fileDir);

		File parentPath = new File(fileDir);
		File[] filelist = parentPath.listFiles();
		for (File f : filelist) {
			if(f.isFile() && f.getName().startsWith(CHACHE_PREFIX)){
				String key = f.getAbsolutePath()
						      .substring(app_data_dir.length()+1);
				Log.e(TAG, "cache.put key:" + key);
/*				synchronized (cache) {
					cache.put(key, new StorageValue(key, (int) f.length()));
				}*/

			}else if(f.isDirectory()){
				//load(f.getPath()) ; 
			}
			
		}
	}