title: Close Android popup window with back press
body: <p>I have created a android application where I have created a popup screen. But when I am pressing the back button, popup is not getting closed. </p>
  
  <p>I have tried with onBackPressed(). It is not working.</p>
  
  <p>Can someone tell me what to do.</p>
  
  <p>Regards,</p>
  
  <p>Shankar</p>