title: Implement non blocking progress dialog like playstore and facebook
body: <p>I am implementing custom <code>progressDialog</code> in my app where I am using <code>animation-list</code> to display a moving image but what I want to do is, embed my <code>progressDialog</code> in my activity such that it doesn't overlap on the screen and when the task is completed, view get updated whereas on back click activity finishes.</p>