 Conference conference = (Conference)getItem(position);          if (convertView == null) {             convertView = mInflater.inflate(R.layout.item_conference_fragment, parent, false);              holder = new ViewHolder();                        holder.btnOverflow = (ImageButton)convertView.findViewById(R.id.btn_overflow);             ...             convertView.setTag(holder);         } else {             holder = (ViewHolder)convertView.getTag();         }          