fix(firebase_messaging): getInitialMessage returns notification onc…

…e & only if pressed for `iOS`. (#7634)

packages/firebase_messaging/firebase_messaging/example/lib/firebase_options.dart

@@ -0,0 +1,73 @@
+// File generated by FlutterFire CLI.
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      return web;
+    }
+    // ignore: missing_enum_constant_in_switch
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        return macos;
+    }
+
+    throw UnsupportedError(
+      'DefaultFirebaseOptions are not supported for this platform.',
+    );
+  }
+
+  static const FirebaseOptions web = FirebaseOptions(
+    apiKey: 'AIzaSyAgUhHU8wSJgO5MVNy95tMT07NEjzMOfz0',
+    appId: '1:448618578101:web:a8ebc6ab724e6baaac3efc',
+    messagingSenderId: '448618578101',
+    projectId: 'react-native-firebase-testing',
+    authDomain: 'react-native-firebase-testing.firebaseapp.com',
+    databaseURL: 'https://react-native-firebase-testing.firebaseio.com',
+    storageBucket: 'react-native-firebase-testing.appspot.com',
+    measurementId: 'G-RF9GF9MQ1F',
+  );
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: 'AIzaSyCuu4tbv9CwwTudNOweMNstzZHIDBhgJxA',
+    appId: '1:448618578101:android:0568e76dc62e89bcac3efc',
+    messagingSenderId: '448618578101',
+    projectId: 'react-native-firebase-testing',
+    databaseURL: 'https://react-native-firebase-testing.firebaseio.com',
+    storageBucket: 'react-native-firebase-testing.appspot.com',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: 'AIzaSyAHAsf51D0A407EklG1bs-5wA7EbyfNFg0',
+    appId: '1:448618578101:ios:0b11ed8263232715ac3efc',
+    messagingSenderId: '448618578101',
+    projectId: 'react-native-firebase-testing',
+    databaseURL: 'https://react-native-firebase-testing.firebaseio.com',
+    storageBucket: 'react-native-firebase-testing.appspot.com',
+    androidClientId:
+        '448618578101-a9p7bj5jlakabp22fo3cbkj7nsmag24e.apps.googleusercontent.com',
+    iosClientId:
+        '448618578101-evbjdqq9co9v29pi8jcua8bm7kr4smuu.apps.googleusercontent.com',
+    iosBundleId: 'io.flutter.plugins.firebase.messaging',
+  );
+
+  static const FirebaseOptions macos = FirebaseOptions(
+    apiKey: 'AIzaSyAHAsf51D0A407EklG1bs-5wA7EbyfNFg0',
+    appId: '1:448618578101:ios:0b11ed8263232715ac3efc',
+    messagingSenderId: '448618578101',
+    projectId: 'react-native-firebase-testing',
+    databaseURL: 'https://react-native-firebase-testing.firebaseio.com',
+    storageBucket: 'react-native-firebase-testing.appspot.com',
+    androidClientId:
+        '448618578101-a9p7bj5jlakabp22fo3cbkj7nsmag24e.apps.googleusercontent.com',
+    iosClientId:
+        '448618578101-evbjdqq9co9v29pi8jcua8bm7kr4smuu.apps.googleusercontent.com',
+    iosBundleId: 'io.flutter.plugins.firebase.messaging',
+  );
+}

packages/firebase_messaging/firebase_messaging/example/lib/main.dart

@@ -7,7 +7,6 @@ import 'dart:convert';
 
 import 'package:firebase_core/firebase_core.dart';
 import 'package:firebase_messaging/firebase_messaging.dart';
-import 'package:firebase_messaging_example/firebase_config.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
@@ -17,6 +16,7 @@ import 'message.dart';
 import 'message_list.dart';
 import 'permissions.dart';
 import 'token_monitor.dart';
+import 'firebase_options.dart';
 
 /// Define a top-level named handler which background/terminated messages will
 /// call.
@@ -25,7 +25,7 @@ import 'token_monitor.dart';
 Future<void> _firebaseMessagingBackgroundHandler(RemoteMessage message) async {
   // If you're going to use other Firebase services in the background, such as Firestore,
   // make sure you call `initializeApp` before using other Firebase services.
-  await Firebase.initializeApp(options: DefaultFirebaseConfig.platformOptions);
+  await Firebase.initializeApp(options: DefaultFirebaseOptions.currentPlatform);
   print('Handling a background message ${message.messageId}');
 }
 
@@ -38,12 +38,7 @@ late FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
 Future<void> main() async {
   WidgetsFlutterBinding.ensureInitialized();
   await Firebase.initializeApp(
-    options: const FirebaseOptions(
-      apiKey: 'AIzaSyAHAsf51D0A407EklG1bs-5wA7EbyfNFg0',
-      appId: '1:448618578101:ios:0b11ed8263232715ac3efc',
-      messagingSenderId: '448618578101',
-      projectId: 'react-native-firebase-testing',
-    ),
+    options: DefaultFirebaseOptions.currentPlatform,
   );
 
   // Set the background messaging handler early on, as a named top-level function

packages/firebase_messaging/firebase_messaging/ios/Classes/FLTFirebaseMessagingPlugin.m

@@ -194,6 +194,14 @@ - (void)messaging:(nonnull FIRMessaging *)messaging
 
 - (void)application_onDidFinishLaunchingNotification:(nonnull NSNotification *)notification {
   // Setup UIApplicationDelegate.
+  NSDictionary *remoteNotification =
+      notification.userInfo[UIApplicationLaunchOptionsRemoteNotificationKey];
+  if (remoteNotification != nil) {
+    // If remoteNotification exists, it is the notification that opened the app.
+    _initialNotification =
+        [FLTFirebaseMessagingPlugin remoteMessageUserInfoToDict:remoteNotification];
+  }
+
 #if TARGET_OS_OSX
   // For macOS we use swizzling to intercept as addApplicationDelegate does not exist on the macOS
   // registrar Flutter implementation.
@@ -333,9 +341,6 @@ - (void)userNotificationCenter:(UNUserNotificationCenter *)center
     NSDictionary *notificationDict =
         [FLTFirebaseMessagingPlugin remoteMessageUserInfoToDict:remoteNotification];
     [_channel invokeMethod:@"Messaging#onMessageOpenedApp" arguments:notificationDict];
-    @synchronized(self) {
-      _initialNotification = notificationDict;
-    }
   }
 
   // Forward on to any other delegates.