问题描述
所以我更新了 firebase_messaging 并且我不得不更改我的代码,因为 onChange
已被弃用,现在当我收到通知并点击通知时,它不会打开另一个屏幕。
这是我实现通知的方式:
FirebaseMessagin.configure()
但是当我点击通知时没有调用 Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
await Firebase.initializeApp();
print('Handling a background message ${message.messageId}');
}
const AndroidNotificationChannel channel = AndroidNotificationChannel(
'high_importance_channel',// id
'High Importance Notifications',// title
'This channel is used for important notifications.',// description
importance: Importance.high,);
final FlutterlocalnotificationsPlugin FlutterlocalnotificationsPlugin =
FlutterlocalnotificationsPlugin();
Future<void> main() async {
WidgetsFlutterBinding.ensureInitialized();
FirebaseMessaging.onBackgroundMessage(_firebaseMessagingBackgroundHandler);
runApp(MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'e-Rădăuți',debugShowCheckedModeBanner: false,initialRoute: '/',routes: {
'/': (_) => MenuScreen(),'/events': (BuildContext context) => EventsScreen(),},);
}
}
class MenuScreen extends StatefulWidget {
@override
_MyAppState createState() => new _MyAppState();
}
Widget build(BuildContext context) {
return Scaffold();
}
@override
void initState() {
super.initState();
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
RemoteNotification notification = message.notification;
AndroidNotification android = message.notification?.android;
if (notification != null && android != null) {
FlutterlocalnotificationsPlugin.show(
notification.hashCode,notification.title,notification.body,NotificationDetails(
android: AndroidNotificationDetails(
channel.id,channel.name,channel.description,icon: 'launch_background',),));
}
});
FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
debugPrint('A new onMessageOpenedApp event was published!');
Navigator.pushNamed(context,'/events');
});
}
}
,因为我在我的控制台 (VSCode) 中没有收到 .onMessageOpenedApp
消息并且我收到以下错误:
debugPrint
我使用 D/FLTFireMsgReceiver( 4799): broadcast received for message
W/civic.e_radaut( 4799): Accessing hidden method Landroid/os/WorkSource;->add(I)Z (greylist,test-api,reflection,allowed)
W/civic.e_radaut( 4799): Accessing hidden method Landroid/os/WorkSource;->add(ILjava/lang/String;)Z (greylist,allowed)
W/civic.e_radaut( 4799): Accessing hidden method Landroid/os/WorkSource;->get(I)I (greylist,allowed)
W/civic.e_radaut( 4799): Accessing hidden method Landroid/os/WorkSource;->getName(I)Ljava/lang/String; (greylist,allowed)
W/FirebaseMessaging( 4799): Notification Channel set in AndroidManifest.xml has not been created by the app. Default value will be used.
I/Flutter ( 4799): Handling a background message 0:1617783965733220%2ebdcc762ebdcc76
从 Firebase 发送了我的通知,并在我的清单中添加了
click_action: FlutteR_NOTIFICATION_CLICK
我的 <intent-filter>
<action android:name="FlutteR_NOTIFICATION_CLICK" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
版本是 firebase_messaging
所以我不知道我错过了什么或者为什么它不起作用。如果您需要更多详细信息,请随时询问。
解决方法
我使用 .getInitialMessaging()
函数解决了这个问题(这是应用终止时的回调。当应用处于后台但未终止时,我的通知有效。
为了解决这个问题,我只是将它添加到我的代码中:
FirebaseMessaging.instance
.getInitialMessage()
.then((RemoteMessage message) {
if (message != null) {
Navigator.pushNamed(context,message.data['view']);
}
});
我制作了一个工作演示here
,如果您想在应用启动前点击通知时转到任何页面或午餐链接,则必须使用
getInitialMessage()
示例:
FirebaseMessaging.instance
.getInitialMessage()
.then((RemoteMessage message) {
if (message != null) {
//to do your operation
launch('https://google.com');
}
});
,
当应用程序在后台时它应该可以工作,但是当它被终止时你应该使用 getInitialMessage
。
onMessageOpenedApp
:如果应用程序从后台状态打开(未终止),则将发送 Stream 事件。
如果您的应用在应用终止时通过通知打开,请参阅getInitialMessage
。