title: Showing a POPUP Window in background in Android
body: <p>I am creating an app in which I have to show list of messages like this one
  <img src="https://imgur.com/yDcr3at.png" alt="whatsapp popup"></p>
  
  <p>The problem is that when I receive a broadcast receiver I am not able to show a Popup Window while,if I start an Dialog activity than due to the context of receiver,the old activity is shown behind the dialog activity.</p>
  
  <p>Any example of such type will be a pleasure...</p>