When click on child of Listitem of Listview then open view in listitem like expandable listview ( expandable listview make from simple listview )

1) set view as a tag object for child which will click
       ex.
           Button b = findviewbyId(R.id.btn1);
           b.settag(convertview);


 2) when click on button
 
          b.setonclickListener(new OnclickListener()
          {
                 @Override

          public void onClick(View vl)
          {

                 View v = (View)vl.gettag();

                 LinearLayout lt = (LinearLayout) temp.findViewById(R.id.idoflayout);

                 lt.setVisibility(View.VISIBLE);

          }

      }