protected void onMessage(Context context, Intent intent) {
        Log.i(TAG, "Received message");
        String message = intent.getExtras().getString("message");
        String ids = intent.getExtras().getString("registration_ids");
        takedata=message;
            WindowManager window = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
            Display display = window.getDefaultDisplay();
            int width = display.getWidth();
            height = display.getHeight();

        displayMessage(context, message);
        // notifies user
        generateNotification(context, message);
    }


///原本用的方法
//    private void generateNotification(Context context, String message) {
//        int  icon=R.drawable.icon_notification;
//        //顯示在狀態列的文字
//        long when = System.currentTimeMillis();
//        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
//        Notification notification = new Notification(icon, message, when);
//        Intent notificationIntent = new Intent(context, Activity_login.class);
//        Log.w("START","WYH");
//        // set intent so it does not start a new activity
//        notificationIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP
//                | Intent.FLAG_ACTIVITY_SINGLE_TOP);
//        PendingIntent intent = PendingIntent.getActivity(context, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
//        notification.setLatestEventInfo(context, "你有新的資訊", "點我查看", intent);
//        // Play default notification sound
//        notification.defaults |= Notification.DEFAULT_SOUND;
//        // Vibrate if vibrate is enabled
//        notification.defaults |= Notification.DEFAULT_VIBRATE;
//        notification.flags |= Notification.FLAG_AUTO_CANCEL;
//        notificationManager.notify(0, notification);
//    }


private void generateNotification(Context context, String message) {
        int  icon=R.drawable.icon_notification;
        //顯示在狀態列的文字
        long when = System.currentTimeMillis();
        NotificationManager nManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
        Notification notification = new Notification(icon, message, when);
        PendingIntent pIntent = PendingIntent.getActivity(this,0,new Intent(this, over.class),PendingIntent.FLAG_UPDATE_CURRENT);
        // Play default notification sound
        notification.defaults |= Notification.DEFAULT_SOUND;
        // Vibrate if vibrate is enabled
        notification.defaults |= Notification.DEFAULT_VIBRATE;
        notification.flags |= Notification.FLAG_AUTO_CANCEL;
        notification.setLatestEventInfo(this,"你有新資訊", "點我查看",pIntent);
        nManager.notify(0, notification);
    }