title: Adding a button to the ExpandableListView Group item
body: <p>I am customizing an ExapndableListView,, I am trying to add a Button to the Group Item,, </p>
  
  <p>The problem is that if the button is focussable  the group does't expand on click. I want the group to expand normally and the button to be clicked normally.</p>
  
  <p>Anybody knows how I could accomplish that?</p>