title: Pin notification icon with Ionic V4
body: <p>I'm currently working on a <code>Ionic V4</code> ( <code>Angular</code> ) project that includes Video conversation.</p>
  
  <p>My purpose right now is to display a small Icon on the device's toolbar (where you can swipe down to view notificaitons) when the app is active. So that if someone leaves the app, they have a way of knowing they're still in a video conversation.</p>
  
  <p>I used Notifications plugin, and when I push a notification it does display as intended, but if you clear the notification - the Icon goes away.</p>
  
  <p>I've seen this feature in the <code>Waze</code> app (When you navigate somewhere and leave the app, you still have a badge on your toolbar) </p>
  
  <p>Any idea how to obtain that kind of behavior?</p>