public void expandParent(int parentIndex){
  if (mDataList != null && !mDataList.isEmpty() && parentIndex >= 0 && parentIndex < mDataList.size()) {
    Object o=mDataList.get(parentIndex);
    if (o instanceof ExpandableListItem) {
      expandParentListItem((ExpandableListItem)o,parentIndex,false,false);
    }
  }
}

public void expandParent ( int parentIndex ) { if ( mDataList != null && ! mDataList . isEmpty ( ) && parentIndex >= 0 && parentIndex < mDataList . size ( ) ) { Object o = mDataList . get ( parentIndex ) ; if ( o instanceof ExpandableListItem ) { expandParentListItem ( ( ExpandableListItem ) o , parentIndex , false , false ) ; } } }
expand specified parent item
