@Override
 public void onDialogClosed(boolean positiveResult) {
   if (positiveResult) {
     SharedPreferences sharedPreferences =
         PreferenceManager.getDefaultSharedPreferences(getContext());
     sharedPreferences
         .edit()
         .putString("col_count", widthPicker.getValue() + "")
         .putString("row_count", heightPicker.getValue() + "")
         .commit();
   }
 }