Question

我正在使用Firebase和云消息传递。

问题是我需要在FirebaseApp.configure（）之前调用application.registerForRemoteNotifications（）。我读过它应该可以解决我的问题。

我使用从雇主处获得的项目，FirebaseApp.configure（）以这种方式调用：

override init() {
    super.init()
    FirebaseApp.configure()
}

我不知道为什么会这样。

在application（didFinishLaunchingWithOptions）中调用application.registerForRemoteNotifications（）。我在这里：

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    //        FirebaseApp.configure()
    GMSPlacesClient.provideAPIKey("AIzaSyCWMU53OSR4zO28i9e2BsASnda3X1TAS2Y")
    GMSServices.provideAPIKey("AIzaSyCWMU53OSR4zO28i9e2BsASnda3X1TAS2Y")
    UIApplication.shared.setStatusBarStyle(UIStatusBarStyle.lightContent, animated: true)


    UITabBarItem.appearance().setTitleTextAttributes([NSAttributedStringKey.foregroundColor:UIColor.clear], for: .normal)
    UITabBarItem.appearance().setTitleTextAttributes([NSAttributedStringKey.foregroundColor:UIColor.clear], for: .selected)




    print("Token is ", Messaging.messaging().fcmToken)


    Thread.sleep(forTimeInterval: 1.0)

    if #available(iOS 10, *) {
        UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate

        Messaging.messaging().delegate = self

        UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert], completionHandler: { (granted, err) in
            //                application.registerForRemoteNotifications()
        })
    } else {
        let notificationSettings = UIUserNotificationSettings(types: [.badge, .alert, .sound], categories: nil)
        UIApplication.shared.registerUserNotificationSettings(notificationSettings)
        UIApplication.shared.registerForRemoteNotifications()
    }

    application.registerForRemoteNotifications()

    return true
}

当我尝试将FirebaseApp.configure()放在application(didFinishLaunchingWithOptions)的开头时问题是

线程1：发出SIGABRT信号错误。

来自控制台我：

由于未捕获的异常而终止应用 'NSInternalInconsistencyException'，原因：'默认的FIRApp 必须在默认FIRAuthinstance之前配置实例初始化。确保这一点的一种方法是致电[FIRApp configure]; 在application:didFinishLaunchingWithOptions:中调用。

我无法理解原因。

Answer 1

首先， FirebaseApp.configure（）必须位于 didFinishLaunchingWithOptions

的第一行

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    FirebaseApp.configure()
    ...

之后，您将完成所有注册事项。

    ...
    // Thread.sleep(forTimeInterval: 1.0) // why do you need a sleep here?
    if #available(iOS 10, *) {
        UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate
        Messaging.messaging().delegate = self
        UNUserNotificationCenter.current().requestAuthorization(options: [.badge, .sound, .alert], completionHandler: { (granted, err) in
           application.registerForRemoteNotifications()
        })
    } else {
        let notificationSettings = UIUserNotificationSettings(types: [.badge, .alert, .sound], categories: nil)
        UIApplication.shared.registerUserNotificationSettings(notificationSettings)
        UIApplication.shared.registerForRemoteNotifications()
    }
    return true
}

FirebaseApp.configure（）线程1：信号SIGBART

1 个答案: