Programmatically collapse a group in ExpandableListView

Question

When I expand a new group, can I collapse the last one expanded?

Answer 1

Very helpful, but as Anh Tuan mentions in the comments above, I was having problems with the ExpandableListView not then scrolling back to the top of the currently selected group (it would stay at the currently scrolled position, in the middle of the group somewhere). You also need to add an onGroupClickListener() to scroll to the correct position:

@Override
public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition,
        long id) {
    // Implement this method to scroll to the correct position as this doesn't
    // happen automatically if we override onGroupExpand() as above
    parent.smoothScrollToPosition(groupPosition);

    // Need default behaviour here otherwise group does not get expanded/collapsed
    // on click
    if (parent.isGroupExpanded(groupPosition)) {
        parent.collapseGroup(groupPosition);
    } else {
        parent.expandGroup(groupPosition);
    }

    return true;
}