title: Add an onClickListener on Default GroupIndicator in ExpandableListView
body: <p>I'm using Expandable List view. In my app both the group and child have content. So I need to start activity on groupClicked as well as on Child clicked. As the default action (given in android) when I click on a group the group expands. </p>
  
  <p>I want to add a action on the group indicator button. So that, when the group is clicked the activity will start and when the group indicator button is clicked the child will be shown. </p>
  
  <pre><code> &gt; a group 
       child 1
       child 2...
  </code></pre>
  
  <p>How can I do that ?</p>
  
  <p>Thank You</p>