我喜欢有一个stck类型的通知我的消息应用程序，这是一个网络应用程序。我的通知正在工作..但每次新的通知来之前的通知消失，新的来。当我在谷歌上搜索时，我发现可以使用setGroup。但是当我使用它的时候，它显示了
类型NotificationCompat.Builder的setGroup（）未定义。
我的通知功能是：

public void CreateNotification(String msg)
    {
        Bitmap largeIcon = BitmapFactory.decodeResource(getResources(),
                R.drawable.icon);

    Intent notificationIntent = new Intent(AndroidMobileAppSampleActivity.this, AndroidMobileAppSampleActivity.class);
    PendingIntent contentIntent = PendingIntent.getActivity(AndroidMobileAppSampleActivity.this, 0, notificationIntent, 0);
     NotificationManager notificationManager = (NotificationManager) AndroidMobileAppSampleActivity.this
                .getSystemService(Context.NOTIFICATION_SERVICE);
    Notification noti = new NotificationCompat.Builder(AndroidMobileAppSampleActivity.this)
                        .setSmallIcon(R.drawable.icon)
                        .setTicker("New message from "+msg)

                        .setWhen(System.currentTimeMillis())
                        .setContentTitle("Mybuzzin")

                        .setContentText(msg)
                        .setContentIntent(contentIntent)
                        //At most three action buttons can be added
                        .setAutoCancel(true).build();    
     noti.defaults |= Notification.DEFAULT_SOUND;
     noti.defaults |= Notification.DEFAULT_VIBRATE;
     noti.flags |=Notification.FLAG_SHOW_LIGHTS| Notification.FLAG_AUTO_CANCEL;    
     notificationManager.notify(notifyID, noti);
}