@Override
  public boolean onGroupClick(ExpandableListView parent, View v,
                int groupPosition, long id) {


    if(parent.getItemAtPosition(groupPosition).equals("Hero Comedy")){

        new DownloadXmlTask().execute("RSSXMLFile");

    }

      return false;

    }
    });

@Override
protected void onPostExecute(List<SaxMessage> result) {

    listDataChild.put(listDataHeader.get(0),result);

}