title: How to put media controller button on notification bar?
body: <p>I am creating a music player application. I want to show the media controller on notification bar while my application is running in background. It looks like Google player.</p>
  
  <p><img src="https://i.stack.imgur.com/B5qh7.jpg" alt="enter image description here"></p>
  
  <p>How to do this?</p>