@Override
  public void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
      case REQUEST_CODE_FILE:
        {
          if (resultCode == Activity.RESULT_OK && data != null) {

            // load data
            mImportActivity.loadCallback(null, data.getData(), null, null, null);
          }

          break;
        }

      default:
        super.onActivityResult(requestCode, resultCode, data);

        break;
    }
  }
 private void search(String query, String keyserver) {
   mImportActivity.loadCallback(new ImportKeysListFragment.KeyserverLoaderState(query, keyserver));
 }