@Override
 public void onLoadFinished(final Loader<List<File>> loader, final List<File> data) {
   final File currentDir = getCurrentDirectory();
   if (currentDir != null) {
     mAdapter.setData(currentDir, data);
     if (currentDir.getParent() == null) {
       setTitle("/");
     } else {
       setTitle(currentDir.getName());
     }
   }
 }
 @Override
 public void onLoaderReset(final Loader<List<File>> loader) {
   mAdapter.setData(null, null);
 }