我需要在我的 Flutter 應用程式中實作云訊息傳遞。
目前，應用程式可以根據應用程式狀態接收和顯示推送通知，如下所示：
應用程式狀態：已啟動并在前臺
安卓：好的
iOS：不好
應用狀態：已啟動并在后臺
安卓：好的
iOS：好的
應用狀態：關閉
安卓：不行
iOS：好的
我將把我當前的應用程式代碼放在這里：
main.dart
///STREAM QUE CONTROLA LA RECEPCION DE MENSAJES CUANDO LA APP ESTA CERRADA O EN BACKGROUND
Future<void> backgroundHandler(RemoteMessage message) async{
//INICIALIZAMOS FIREBASE
await Firebase.initializeApp();
print(message.data.toString());
print(message.notification!.title);
}
Future<void> main() async {
//PERMITIR EL USO DE LIBRERIAS EXTERNAS QUE NECESITEN INTERACTUAR CON EL ARBOL DE WIDGETS
WidgetsFlutterBinding.ensureInitialized();
//INICIALIZACION DE EASYLOCALIZATION (TRADUCCION DE LA UI A EN, CA, ES)
await EasyLocalization.ensureInitialized();
//INICIALIZAMOS FIREBASE
await Firebase.initializeApp();
//INICIALIZAMOS EL STREAM PARA PODER RECIBIR MENSAJES CUANDO LA APP ESTE CERRADA O EN BACKGROUND
FirebaseMessaging.onBackgroundMessage(backgroundHandler);
DarkThemeProvider themeChangeProvider = DarkThemeProvider();
runApp(EasyLocalization(
path: "idiomas",
fallbackLocale: Locale("es", "ES"),
saveLocale: true,
supportedLocales: [
Locale("en", "EN"),
Locale("es", "ES"),
Locale("ca", "CA")
],
child: MultiProvider(
providers: [
ChangeNotifierProvider(create: (_) {
return themeChangeProvider;
}),
ChangeNotifierProvider(create: (_) => UsuarioProvider()),
ChangeNotifierProvider(create: (_) => EmpresaProvider()),
ChangeNotifierProvider(create: (context) => ApplicationBloc())
],
child: Consumer<DarkThemeProvider>(builder: (context, themeData, child) {
return MaterialApp(
theme: Styles.themeData(themeChangeProvider.darkTheme, context),
routes: {
"noticias": (_) => MyHomePage(currentIndex: 0,),
"avisos": (_) => MyHomePage(currentIndex: 1,),
"tareas": (_) => MyHomePage(currentIndex: 2,),
"perfil": (_) => MyHomePage(currentIndex: 3,),
},
home: MyApp());
}),
)));
}
class MyApp extends StatefulWidget {
const MyApp({Key? key}) : super(key: key);
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String? token = " ";
DarkThemeProvider themeChangeProvider = DarkThemeProvider();
void getCurrentAppTheme() async {
themeChangeProvider.darkTheme =
await themeChangeProvider.darkThemePreferences.getTheme();
}
Future<void>_init() async{
if(Platform.isIOS){
final settings = await FirebaseMessaging.instance.requestPermission();
if(settings.authorizationStatus == AuthorizationStatus.authorized){}
}
else
{}
}
@override
void initState() {
getCurrentAppTheme();
super.initState();
//COMPROBAMOS LA PLATAFORMA
if(Platform.isIOS){
//SOLICITAMOS PERMISOS A IOS PARA RECIBIR PUSH
_init();
}
//INICIALIZAMOS LOCAL NOTIFICATION SERVICE
LocalNotificationService.initialize(context);
//DEJAMOS PREPARADA LA APP PARA RECIBIR UNA PUSH Y ABRIRLA EN EK CASO DE QUE LA APP ESTE CERRADA
FirebaseMessaging.instance.getInitialMessage().then((message) {
if(message != null){
final routeFromMessage = message.data["route"];
Navigator.of(context).pushNamed(routeFromMessage);
}
});
///CON LA APP ACTIVA SE EJECUTA ESTA STREAM PARA OBTENER LOS DATOS DE LA PUSH
FirebaseMessaging.onMessage.listen((message) {
if(message.notification != null){
print(message.notification!.body);
print(message.notification!.title);
}
LocalNotificationService.display(message);
});
///CON LA APP ABIERTA PERO EN SEGUNDO PLANO Y EL USUARIO HACE CLICK
///SOBRE LA PUSH, LA APP SE REABRE ABRIENDO LA PANTALLA INDICADA EN ROUTES
FirebaseMessaging.onMessageOpenedApp.listen((message) {
final routeFromMessage = message.data["route"];
print("ruta recibida en la push ${routeFromMessage}");
Navigator.of(context).pushNamed(routeFromMessage);
});
}
@override
Widget build(BuildContext context) {
return
Consumer<DarkThemeProvider>(builder: (context, themeData, child) {
return MaterialApp(
localizationsDelegates: context.localizationDelegates,
supportedLocales: context.supportedLocales,
locale: context.locale,
title: 'Evan.zero',
theme: Styles.themeData(themeChangeProvider.darkTheme, context),
home: MyHomePage(currentIndex: 0,),
);
});
}
}
local_notification_service.dart
class LocalNotificationService {
static final FlutterLocalNotificationsPlugin _notificationsPlugin =
FlutterLocalNotificationsPlugin();
static void initialize(BuildContext context) {
final InitializationSettings initializationSettings =
InitializationSettings(
android: AndroidInitializationSettings("@drawable/ic_stat_zf"));
_notificationsPlugin.initialize(initializationSettings,onSelectNotification: (String? route) async{
if(route != null){
Navigator.of(context).pushNamed(route);
}
});
}
static void display(RemoteMessage message) async {
try {
final id = DateTime.now().millisecondsSinceEpoch ~/1000;
const NotificationDetails notificationDetails = const NotificationDetails(
android: AndroidNotificationDetails(
"evanzero",
"evanzero channel",
importance: Importance.max,
priority: Priority.high,
)
);
await _notificationsPlugin.show(
id,
message.notification!.title,
message.notification!.body,
notificationDetails,
payload: message.data["route"],
);
} on Exception catch (e) {
print(e);
}
}
}
我要求您檢查代碼并告訴我應該添加或洗掉什么才能在兩個平臺和三種可能的狀態下接收推送通知
uj5u.com熱心網友回復：
Android 關閉應用程式并在前臺和后臺運行我的作業示例：
@override
void initState() {
super.initState();
var initializationSettingsAndroid = new AndroidInitializationSettings('app_icon');
var initializationSettingsIOS = new IOSInitializationSettings();
var initializationSettings = new InitializationSettings(android: initializationSettingsAndroid, iOS: initializationSettingsIOS);
flutterNotificationPlugin = FlutterLocalNotificationsPlugin();
flutterNotificationPlugin.initialize(initializationSettings, onSelectNotification : onNotificationInForegroundPressed);
FirebaseMessaging.instance
.getInitialMessage()
.then((RemoteMessage? message) {
if (message != null) {
Beamer.of(context).beamToNamed(
'/myroot/${message.data["id"].toString()}/myroot2');
notifications.setNotificationOpened(message.data["id"]);
}
});
FirebaseMessaging.onMessage.listen(
(RemoteMessage message) async {
RemoteNotification? notification = message.notification;
AndroidNotification? android = message.notification?.android;
notifications.setNotificationReceived(message.data['id'].toString());
var requestId = message.data['requestId'].toString();
var messageId = message.data['messageId'].toString();
FCMPayload fcmPayload = FCMPayload(id: '$id', messageId : '$messageId');
String fcmPayloadJsonString = fcmPayload.toJsonString();
if (notification != null && android != null && !kIsWeb) {
flutterLocalNotificationsPlugin.show(
notification.hashCode,
notification.title,
notification.body.toString(),
NotificationDetails(
android: AndroidNotificationDetails(
channel.id,
channel.name,
icon: 'launch_background',
),
),
payload: fcmPayloadJsonString
);
}
},
);
FirebaseMessaging.onMessageOpenedApp.listen((RemoteMessage message) {
Beamer.of(context).beamToNamed(
'/myroot/${message.data["id"].toString()}/myroot2');
notifications.setNotificationOpened(message.data["messageId"]);
});
}
void Function()? onNotificationInForegroundPressed(String? payload) {
FCMPayload fcmpayload = FCMPayload.fromJsonString(payload!);
Beamer.of(context).beamToNamed(
'/myroot/${fcmpayload.requestId}/myroot');
notifications.setNotificationOpened(fcmpayload.messageId);
}
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標籤：扑 镖 firebase-云消息传递