title: In Notification Badge icon not showing in Vivo,oppo custom OS but in Samsung showing in flutter
body: <p>In <strong>Flutter</strong> android i implemented Notification and that works for all devices. but I'm getting problem in <strong>Badge icon</strong> count when multiple notifications arrives. That needs to show count on icon, in my Samsung device its works like charm but in vivo, oppo, Mi that badge count is not showing.</p>
  <p><a href="https://i.stack.imgur.com/aedAD.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/aedAD.png" alt="enter image description here" /></a></p>
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