expandablelistview - Collapse all group except selected group in expandable listview android -

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i'm developing android application using expandable list view. need is, i'm listing group, contains child.

if select unexpandable group, should expand, after ll select second group @ time first group should collapsed. did google, couldn't find want. please me out.

have current expanded group position stored in variable. in ongroupexpanded 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;     } });

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