title: ExpandableListView Group View Expand Default
body: <p>I have develop ExpandableListView perfectly.</p>
  
  <p>In My ExpandableListView five groups are there. load first time then collapse all five group. it is default.</p>
  
  <p>now my question is load first time expandablelistview at that time 2 groups are expand and other 3 groups are collapse.</p>
  
  <p>so please guide me how to do?</p>