Flutter 当应用程序处于后台或终止时，不显示用于颤振IOS通知的FCM

我使用Firebase云消息传递实现了颤振。所有这些在Android中都运行良好，但iOS推送通知只在应用程序处于前台时显示

请帮助我在后台显示通知应用程序并终止

这些就是我迄今为止所做的步骤

创建了firbase项目

将GoogleService-Info.plist添加到xcode

将firebase消息：^6.0.13和颤振本地通知：^1.3.0添加到pubspec.yaml中

飘飘然

FirebaseMessaging firebaseMessaging = new FirebaseMessaging();
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
new FlutterLocalNotificationsPlugin();



@override
void initState() {
super.initState();
var android = new 
AndroidInitializationSettings('mipmap/ic_launcher');
var ios = new IOSInitializationSettings();
var platform = new InitializationSettings(android, ios);
flutterLocalNotificationsPlugin.initialize(platform);

firebaseMessaging.configure(
onLaunch: (Map<String, dynamic> msg) async{
print(" onLaunch called ${(msg)}");
},

onResume: (Map<String, dynamic> msg) async{
print(" onResume called ${(msg)}");
},
onMessage: (Map<String, dynamic> msg) async{
showNotification(msg);
print(" onMessage called ${(msg)}");
},
);
firebaseMessaging.requestNotificationPermissions(
const IosNotificationSettings(sound: true, alert: true, badge: 
true));
firebaseMessaging.onIosSettingsRegistered
.listen((IosNotificationSettings setting) {
print('IOS Setting Registed');
});
firebaseMessaging.getToken().then((token) {
update(token);
});
getCashedInfo();
}



showNotification(Map<String, dynamic> msg) async {
var android = new AndroidNotificationDetails(
'sdffds dsffds',
"CHANNLE NAME",
"channelDescription",
);
var iOS = new IOSNotificationDetails();
var platform = new NotificationDetails(android, iOS);
await flutterLocalNotificationsPlugin.show(
 0, "This is title", "this is demo", platform);
}

update(String token) {
print(token);

}

---

那么，你找到答案了吗？喂？你找到答案了吗？我也有同样的问题。我猜没有。这个问题上有几十个线程，没有记录在案的、可重复的更正。有解决方案吗？我被这个困住了。。。。

if #available(iOS 10.0, *) {
  UNUserNotificationCenter.current().delegate = self as? 
UNUserNotificationCenterDelegate
}