docs: public void setSelection(int position) {
          DropDownListView list = mDropDownList;
          if (isShowing() && list != null) {
              list.mListSelectionHidden = false;
              list.setSelection(position);
  
              if (Build.VERSION.SDK_INT >= 11) {
                  if (list.getChoiceMode() != ListView.CHOICE_MODE_NONE) {
                      list.setItemChecked(position, true);
                  }
              }
          }
      }