title: show activity inside popup window android
body: <p>I have a task to make an activity that look like facebook notification screen
  please see the attached image</p>
  
  <p><img src="https://i.stack.imgur.com/sH4TB.jpg" alt="enter image description here"></p>
  
  <p>can any one please help me with tutorial or example that will help me to make activity looks like this ?</p>