public View getView(int position, View convertView, ViewGroup parent) {
   // TODO
   CommentView cv = null;
   if (convertView == null) {
     convertView = mInflater.inflate(R.layout.comments_item, null);
     cv = new CommentView();
     cv.txtContent = (TextView) convertView.findViewById(R.id.txtContent);
     cv.txtGenTime = (TextView) convertView.findViewById(R.id.txtGenTime);
     cv.txtUName = (TextView) convertView.findViewById(R.id.txtUName);
     convertView.setTag(cv);
   } else {
     cv = (CommentView) convertView.getTag();
   }
   NewsComment nc = (NewsComment) getItem(position);
   cv.txtContent.setText(nc.getContent());
   cv.txtGenTime.setText(nc.getGen_time().toLocaleString());
   cv.txtUName.setText(nc.getUser_id() + "");
   return convertView;
 }