public void showProgressDialog() {
   if (mProgressDialog == null) {
     mProgressDialog = new USUProgressDialog(getActivity(), R.color.progress_dialog_yellow);
     mProgressDialog.setCancelable(false);
     mProgressDialog.show();
   }
 }
 public void hideProgressDialog() {
   if (mProgressDialog != null && mProgressDialog.isShowing()) {
     mProgressDialog.dismiss();
   }
 }