Sorting active notifications on android

sort_active_notifications.java

// METHOD TO SORT
sort() {
        activeNotifications = notificationManager.getActiveNotifications();

        Arrays.sort(activeNotifications, PushNotificationUtil.postTimeComparator);
        while (activeNotifications.size() > 6) { // You can change this to any number. This defines the limit on notifications
            StatusBarNotification notification = activeNotifications.remove(0);
            notificationManager.cancel(notification.getId());
        }
}

// COMPARATOR FOR SORTING NOTIFICATION LIST
public static Comparator < StatusBarNotification > postTimeComparator = new Comparator < StatusBarNotification > () {
        @Override
        public int compare(StatusBarNotification sbn1, StatusBarNotification sbn2) {
            // compare the post times
            return Long.compare(sbn1.getPostTime(), sbn2.getPostTime());
        }
};