*Deleting a notification channel*
- delete notification channels by calling `deleteNotificationChannel()`
- Notification settings displays the number of deleted channels, as a spam prevention mechanism. You can clear test channels on development devices: either by reinstalling the app, or by clearing the data associated with your copy of the app.
- The following sample code demonstrates how to delete a notification channel:
``` {code: java }
NotificationManager mNotificationManager =
(NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
// The id of the channel.
String id = "my_channel_01";
NotificationChannel mChannel = mNotificationManager.getNotificationChannel(id);
mNotificationManager.deleteNotificationChannel(mChannel);
``` {code}
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