Android: remove notification from notification bar

You can also call cancelAll on the notification manager, so you don't even have to worry about the notification ids.

NotificationManager notifManager= (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
notifManager.cancelAll();

EDIT : I was downvoted so maybe I should specify that this will only remove the notification from your application.

this will help:

NotificationManager mNotificationManager = (NotificationManager)
            getSystemService(NOTIFICATION_SERVICE);
mNotificationManager.cancelAll();

this should remove all notifications made by the app

and if you create a notification by calling

startForeground();

inside a Service.you may have to call

stopForeground(false);

first,then cancel the notification.

This is quite simple. You have to call cancel or cancelAll on your NotificationManager. The parameter of the cancel method is the ID of the notification that should be canceled.

See the API: http://developer.android.com/reference/android/app/NotificationManager.html#cancel(int)

You can try this quick code

public static void cancelNotification(Context ctx, int notifyId) {
    String ns = Context.NOTIFICATION_SERVICE;
    NotificationManager nMgr = (NotificationManager) ctx.getSystemService(ns);
    nMgr.cancel(notifyId);
}