Firebase iOS 推送通知在首次安装时不起作用

Question

当我第一次安装并打开应用程序并接受来自 Apple 的通知权限警告时，我从 Firebase 得到了这个日志：

5.16.0 - [Firebase/InstanceID][I-IID023004] Could not update attributes of the key pair to be accessible after first unlock. update status: -25300

之后，如果我关闭应用程序或将应用程序发送到后台，我将不会收到任何通知。如果我再次打开该应用程序，通知将开始正常工作。

这是我当前的设置：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    setupPushNotificationsHandling(application)
    return true
}

private func setupPushNotificationsHandling(_ application: UIApplication) {
    UNUserNotificationCenter.current().delegate = self
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound]) { (granted, _) in
        guard granted else { return }

        DispatchQueue.main.async {
            application.registerForRemoteNotifications()

            FirebaseApp.configure()
            InstanceID.instanceID().instanceID { (result, _) in
                // Receive notifications from the "all" topic
                Messaging.messaging().subscribe(toTopic: "all")
            }
        }
    }
}

func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
    print("response \(response)")
    completionHandler()
}

Answer 1

我就是这样解决的。

在尝试订阅通知主题之前，我等到委托方法 application:didRegisterForRemoteNotificationsWithDeviceToken: 被调用。
我重试，直到调用 InstanceID.instanceID().instanceID returns 一个有效的设备令牌。

完成设置：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
    setupPushNotificationsHandling(application)
    return true
}

private func setupPushNotificationsHandling(_ application: UIApplication) {
    FirebaseApp.configure()

    application.registerForRemoteNotifications()

    UNUserNotificationCenter.current().delegate = self
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound]) { (_, _) in }
}

func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
    // Receive notifications from the "all" topic
    subscribeToNotificationsTopic(topic: "all")
}

func subscribeToNotificationsTopic(topic: String) {
    // Retry until the notifications subscription is successful
    DispatchQueue.global().async {
        var subscribed = false
        while !subscribed {
            let semaphore = DispatchSemaphore(value: 0)

            InstanceID.instanceID().instanceID { (result, error) in
                if let result = result {
                    // Device token can be used to send notifications exclusively to this device
                    print("Device token \(result.token)")

                    // Subscribe
                    Messaging.messaging().subscribe(toTopic: topic)

                    // Notify semaphore
                    subscribed = true
                    semaphore.signal()
                }
            }

            // Set a 3 seconds timeout
            let dispatchTime = DispatchTime.now() + DispatchTimeInterval.seconds(3)
            _ = semaphore.wait(timeout: dispatchTime)
        }
    }
}

Answer 2

我遇到了同样的问题并使用@AlejandroCotilla 的回答解决了。请注意，在 Firebase 8.10.0 版本中，“InstanceID.instanceID().instanceID ..”已重命名为“Installations.installations().installationID ..”.

Firebase iOS 推送通知在首次安装时不起作用

Firebase iOS Push Notifications not working on first install

apple-push-notifications

ios

firebase

swift

firebase-cloud-messaging