dart – 如何在flutter中实现推送通知

概述嗨,我正在尝试实施推送通知,如何显示为通知可以任何一个帮助,我能听,因为我收到通知但我无法看到消息,它出现作为警报,但我想作为通知可以任何一个帮助,在 Android或iOS中我们应该在清单文件和应用程序委托文件中如何在颤动 我的代码看起来像这样 class PushMessagingExample extends StatefulWidget { @override _PushMessagi 嗨,我正在尝试实施推送通知,如何显示为通知可以任何一个帮助,我能听,因为我收到通知但我无法看到消息,它出现作为警报,但我想作为通知可以任何一个帮助,在 Android或iOS中我们应该在清单文件和应用程序委托文件中如何在颤动

我的代码看起来像这样

class PushMessagingExample extends StatefulWidget { @overrIDe _PushMessagingExampleState createState() => new _PushMessagingExampleState(); }class _PushMessagingExampleState extends State<PushMessagingExample> {String _homeScreenText = "Waiting for token...";bool _topicbuttonsDisabled = false;final FirebaseMessaging _firebaseMessaging = new FirebaseMessaging();final TextEditingController _topicController =new TextEditingController(text: 'topic');Future<Null> _showItemDialog(Map<String,dynamic> message) async {final Item item = _itemForMessage(message);showDialog<Null>(    context: context,child: new AlertDialog(      content: new Text("Item ${message} has been updated"),actions: <Widget>[        new Flatbutton(            child: const Text('CLOSE'),on@R_403_4848@: () {              Navigator.pop(context,false);            }),new Flatbutton(            child: const Text('SHOW'),true);            }),],)).then((bool shouldNavigate) {  if (shouldNavigate == true) {    _navigatetoItemDetail(message);  }});} Future<Null> _navigatetoItemDetail(Map<String,dynamic> message) async     {final Item item = _itemForMessage(message);// Clear away dialogsNavigator.popUntil(context,(Route<dynamic> route) => route is PageRoute);if (!item.route.isCurrent) {  Navigator.push(context,item.route);}}  @overrIDe voID initState() {  super.initState();_firebaseMessaging.configure(  onMessage: (Map<String,dynamic> message) {    print("onMessage: $message");    print(message);    _showItemDialog(message);  },onLaunch: (Map<String,dynamic> message) {    print("onLaunch: $message");    print(message);    _navigatetoItemDetail(message);  },onResume: (Map<String,dynamic> message) {    print("onResume: $message");    print(message);    _navigatetoItemDetail(message);  },);_firebaseMessaging.requestNotificationPermissions(    const IosNotificationSettings(sound: true,badge: true,alert: true));_firebaseMessaging.onIosSettingsRegistered    .Listen((IosNotificationSettings settings) {  print("Settings registered: $settings");});_firebaseMessaging.getToken().then((String token) {  assert(token != null);  setState(() {    _homeScreenText = "Push Messaging token: $token";  });  print(_homeScreenText);});}@overrIDeWidget build(BuildContext context) {return new Scaffold(    body: new Material(      child: new Column(        children: <Widget>[          new Center(            child: new Text(_homeScreenText),),));  }  }

解决方法 如果您尝试将消息放在锁定屏幕上,请确保您发送的是“通知”消息类型,而不是将传递给正在运行的应用程序的“数据”消息.您可以在Firebase开发人员指南中了解有关 different types of Firebase messages的更多信息. 总结

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