Notification怎么用呀

Question

在service里面加了这几行代码就出错了
Notification notification=new Notification();
notification.icon=android.R.id.icon;
notification.tickerText=downloadmessageString;
notification.flags=Notification.FLAG_AUTO_CANCEL;
NotificationManager notificationManager= (NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0, notification);//这行报告
11-17 13:50:42.963: E/AndroidRuntime(417): java.lang.IllegalArgumentException: contentIntent required: pkg=zxy.study.Mp3Player id=0 notification=Notification(vibrate=null,sound=null,defaults=0x0)这是什么意思呀？

Answer 1

好像是Notification notification=new Notification();
这个定义错了吧。