Collapse all group except selected group in expandable listview android

Question

I'm developing android application using expandable list view. Actually what I need is, I'm listing group, which contains child.

If I select an unexpandable group, it should expand, after I ll select second group at that time the first group should be collapsed. I did Google, but I couldn't find what I want. Please help me out.

Answer 1

Have the current expanded group position stored in a variable. In onGroupExpanded do the following.

private int lastExpandedPosition = -1; private ExpandableListView lv; //your expandable listview ...  lv.setOnGroupExpandListener(new OnGroupExpandListener() {      @Override     public void onGroupExpand(int groupPosition) {             if (lastExpandedPosition != -1                     && groupPosition != lastExpandedPosition) {                 lv.collapseGroup(lastExpandedPosition);             }             lastExpandedPosition = groupPosition;     } });