private static void removeExpiredCache(
final AbstractCache<String, ?> cache, final String urlPrefix) {
final File cacheDir = new File(cache.getDiskCacheDirectory());
if (!cacheDir.exists()) {
return;
}
File[] list =
cacheDir.listFiles(
new FilenameFilter() {
@Override
public boolean accept(File dir, String filename) {
return dir.equals(cacheDir)
&& filename.startsWith(cache.getFileNameForKey(urlPrefix));
}
});
if (list == null || list.length == 0) {
return;
}
for (File file : list) {
file.delete();
}
}
