Regarding removing the Notification from Notification bar

Hi Team,

I need to show one notification while User is locking the device. I am using PlayerNotificationManager and MediaSessionConnector for showing the notification and setting the controls like seekbar, play/pause. Everything is working fine. I need to remove the notification from the notificationbar when User is coming back from that fragment as I don't want to display it to user anymore.

I have tried to cancel the Notification with following ways:
notificationManager.setPlayer(null)
cancel (Notification_id)

Nothing seems to work, can you please suggest something?

Regards,
Rohit Garg