firebase_messaging onResume和onLaunch无法正常工作

Question

我在应用程序处于前台时收到通知，但在应用程序处于后台时却未收到通知。此外，我有google-ed / StackOverflow-ed大约2个小时或更长时间，但能够解决此问题。

我的配置是：

  firebase_auth: ^0.10.0
  firebase_messaging: ^5.0.0

清单是这样的：

代码是这样的：

final notifications = new FirebaseMessaging();

class AppNotifications {
  static String fcmToken = '';

  static Future<Null> init() async {
    appLogs("AppNotifications init");

    notifications.requestNotificationPermissions(const IosNotificationSettings(sound: true, badge: true, alert: true));

    await configure();

    fcmToken = await notifications.getToken();
    appLogs("FCM TOKEN : " + fcmToken);

    notifications.onTokenRefresh.listen((newToken) {
      fcmToken = newToken;
      appLogs("FCM TOKEN onTokenRefresh: " + fcmToken);
    });

    await updateFCMToken();
  }

  static Future<Null> configure() async {
    appLogs("AppNotifications Configure");

    notifications.configure(onMessage: (msg) {
      appLogs('FCM onMessage: ' + msg.toString());
    }, onLaunch: (lun) {
      appLogs('FCM onLaunch: ' + lun.toString());
    }, onResume: (res) {
      appLogs('FCM onResume: ' + res.toString());
    });
  }

  static Future<Null> updateFCMToken() async {
    auth.currentUser.fcmToken = fcmToken;
    await updateUserInSharedPreference();
  }
}

我正在这样调用函数：

class HomeScreenState extends State<HomeScreen> {


  @override
  void initState() {
    super.initState();

    Future.delayed(Duration(milliseconds: 100), () async {
      await AppNotifications.init();
    });
  }

..... ....

我正在使用邮递员发送通知：

我的日志：

**(App is Foreground)**  I/flutter (31888): APPLOGS : FCM onMessage: {notification: {title: Test notification title, body: Test notification body}, data: {status: done, id: 1, foo: bar, click_action: FLUTTER_NOTIFICATION_CLICK}}
  **(App is Background)**  W/FirebaseMessaging(31888): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.

扑医生：

[?] Flutter (Channel stable, v1.2.1, on Mac OS X 10.14.4 18E226, locale en-GB)
    • Flutter version 1.2.1 at /Users/Ajay/SDK/flutter
    • Framework revision 8661d8aecd (3 months ago), 2019-02-14 19:19:53 -0800
    • Engine revision 3757390fa4
    • Dart version 2.1.2 (build 2.1.2-dev.0.0 0a7dcf17eb)

[?] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /Users/Ajay/Library/Android/sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)
    • All Android licenses accepted.

[?] iOS toolchain - develop for iOS devices (Xcode 10.2.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Xcode 10.2.1, Build version 10E1001
    • ios-deploy 1.9.4
    • CocoaPods version 1.6.0

[?] Android Studio (version 3.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin version 34.0.1
    • Dart plugin version 182.5215
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1248-b01)

[!] VS Code (version 1.33.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    ? Flutter extension not installed; install from
      https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[?] Connected device (1 available)
    • ONEPLUS A5000 • b47e8396 • android-arm64 • Android 9 (API 28)

Answer 1

我花了2天的时间解决此问题，可能对您有所帮助。 通知标签仅用于显示通知。您只能在onResume / onLaunch上访问数据内容。

如果要在onResume / onLaunch内处理通知消息，请将这些消息也添加到data标签中，那么您可以做任何您想做的事情。

请参阅此链接的更多详细信息

发送此通知消息

{
       "notification": {
          "body": "body",
          "title": "title"
       },
       "priority": "high",
       "data": {
        "body": "body",
          "title": "title"
          "click_action": "FLUTTER_NOTIFICATION_CLICK",
          "id": "1",
          "status": "done",
          "image": "https://ibin.co/2t1lLdpfS06F.png",
       },
       "to": <your token>
    }

您将收到有关onResume或onLaunch的以下信息，您的通知标签此处为空

{notification: {}, data: {image: https://ibin.co/2t1lLdpfS06F.png, google.original_priority: high, google.sent_time: 1560858283888, google.delivered_priority: high, body: body , title: title, click_action: FLUTTER_NOTIFICATION_CLICK, google.message_id: 0:1560858283908500%eefdc741eefdc741, collapse_key: <package>, google.ttl: 2419200, from: <from>, id: 1, status: done}}

您可以使用数据标签中添加的标题和正文。

Answer 2

在我的情况，onResume并onLoad没有开火，因为我错过click_action: 'FLUTTER_NOTIFICATION_CLICK'了下notification财产，没有的data特性。

一旦将有效载荷更改为以下格式，onResume并onLoad开始为我射击。

{
    notification: {
        title: 'Title',
        body: 'Body',
        click_action: 'FLUTTER_NOTIFICATION_CLICK'
    }
}

我发现这个记录在这里。

Answer 3

您可能在 AndroidManifest 中丢失了一些元数据（正如您的日志告诉您的那样）。您需要将以下内容添加到清单中：

<meta-data
    android:name="com.google.firebase.messaging.default_notification_channel_id"
    android:value="@string/default_notification_channel_id"/>

看起来像是重复的