public void updateItem(int position,Object o){
  if (!isDataListEmpty() && position >= 0 && position < mDataList.size()) {
    mDataList.set(position,o);
    notifyItemChanged(position);
  }
}

public void updateItem ( int position , Object o ) { if ( ! isDataListEmpty ( ) && position >= 0 && position < mDataList . size ( ) ) { mDataList . set ( position , o ) ; notifyItemChanged ( position ) ; } }
update an exit item
