Re triggering a notification on Android

retrigger.java

    @SuppressLint("NotificationTrampoline")
    void reTriggerNotification(Context context, Bundle extras, StatusBarNotification notification, String channelId, NotificationManager nm) {
        NotificationCompat.Builder nb = new NotificationCompat.Builder(context, channelId);
        Notification n = notification.getNotification();
        // ...
        // Set all attributes you want on your notification.
        // Set unique group IDs if you're disabling Notification bundling
        // Set custom layouts, stale notification etc
        // ...

        // Now you have to create a new ID for this notification
        // If you push it to the old ID then Android will de-prioritize it
        // Moving this notification down in the tray
        nb.setPriority(NotificationCompat.PRIORITY_MAX);
        try {
            int notificationId = (int)(Math.random() * 100);
            Notification notif = nb.build();
            nm.cancel(notification.getId());
            nm.notify(notificationId, notif);
        } catch (Exception e) {
            // Handle exception
        }
    }