private void showNotification()
    {
            CharSequence title = "Hello";
            CharSequence message = "Notification Demo";

            NotificationManager notificationManager = (NotificationManager)getSystemService(NOTIFICATION_SERVICE);
            Notification notification = new Notification(R.drawable.icon,"A Notification",System.currentTimeMillis());
            Intent notificationIntent = new Intent(this,Main_Activity.class);
            PendingIntent pendingIntent = PendingIntent.getActivity(this,notificationIntent,0);

            notification.setLatestEventInfo(Main_Activity.this,title,message,pendingIntent);
            notificationManager.notify(NOTIFICATION_ID,notification);
    }

它的工作正常,但是即使用户按通知栏中的“清除”通知按钮,我们还能以什么方式将通知保持在通知栏？

请查看“雅虎”应用程序的通知栏.

我已经通过这个SDK文章：http://developer.android.com/guide/topics/ui/notifiers/notifications.html#Updating,但没有找到.