title: Drawing circle gradually in android
body: <p>I want to show a circle being drawn in android gradually like this:</p>
  
  <p><a href="https://i.stack.imgur.com/QXAA9.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/QXAA9.jpg" alt="enter image description here"></a></p>
  
  <p>How should i start? 
  What needs to be done? </p>