title: How to clear one signal Push Notification programmatically in Android?
body: <p>I used push notification in my app using One signal. I added an action button name: Clear id: clearNotific . I want when user click on this clear button in notification then this notification will remove. I can collect notification id and I am trying to use <code>notificationManager.cancel(not_id);</code>
  But this is not worked.</p>