请告知通知工作？

Question

当我打电话

NotificationManager mNotificationManager =
                                (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

我收到错误

The method getSystemService(String) is undefined for the type new BroadcastReceiver(){}

我不确定我搞砸了哪里...... TIA

Answer 1

使用

NotificationManager mNotificationManager =
            (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

Answer 2

据我所知，调用某些涉及来自BroadcastReceiver的Context的方法并不安全，如Context.bindService() in this answer所述。