Swift：为什么在后台推送通知didReceive改为didReceiveRemoteNotification

Question

为什么当我从服务器发送推送通知且应用程序处于后台时，调用了class CustomWidget extends StatelessWidget { CustomWiget(){ // Access the config in the constructor GlobalConfiguration cfg = new GlobalConfiguration(); print(cfg.getAppConfig("key1"); // prints value1 } @override Widget build(BuildContext context) { // Access the config in the build method GlobalConfiguration cfg = new GlobalConfiguration(); return new Text(cfg.getAppConfig("key2")); } } 而不是didReceive？

当我的应用打开或被didReceiveRemoteNotification终止推送通知传递时，只有当应用处于后台时，它才能通过didReceiveRemoteNotification

为什么？