Question

我的iOS应用程序使用firebase时出现问题。我使用以下代码退出：

     @IBAction func logoutDidTap(_ sender: Any) {
            try! FIRAuth.auth()?.signOut()

虽然app UI反映了signOut，但我收到以下控制台消息： [Firebase /数据库] [I-RDB03812] / media的监听器失败：permission_denied 此外，当我使用不同的用户凭据登录时，该应用程序将以旧用户身份登录。

    override func viewDidAppear(_ animated: Bool) {        

    //user logged in?
    FIRAuth.auth()?.addStateDidChangeListener({ (auth, user) in
        if let user = user {    //signed in
            DatabaseReference.users(uid: user.uid).reference().observeSingleEvent(of: .value, with: { (snapshot) in
                if let userDict = snapshot.value as? [String: Any] {
                    self.currentUser = User(dictionary: userDict)
                }
            })
        }else {
            self.performSegue(withIdentifier: Storyboard.showWelcome, sender: nil)
        }
    })

有什么想法吗？

Answer 1

我不知道它是否有帮助，但我所做的是在AppDelegate中添加addStateDidChangeListener以检查当前用户是否已登录。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    FIRApp.configure()
    handle = FIRAuth.auth()?.addStateDidChangeListener({ (auth, user) in
        if FIRAuth.auth()?.currentUser != nil{
           // go to main screen if there is a user logged in

        }else{

           //go to login screen

        }

    })


    return true
}

Answer 2

我在didFinishLaunchingWithOptions下将此代码添加到AppDelegate中。如果用户已登录，它会跳过viewcontroller。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

        FIRApp.configure()

// MARK: Skip splash screen and login, if user is logged in
        storyboard =  UIStoryboard(name: "Main", bundle: Bundle.main)
        let currentUser = FIRAuth.auth()?.currentUser
        if currentUser != currentUser
        {
            self.window?.rootViewController = self.storyboard?.instantiateViewController(withIdentifier: "LoginViewController")
        }
        else
        {
            self.window?.rootViewController = self.storyboard?.instantiateViewController(withIdentifier: "ViewController")
        }
        return true
}

Firebase signOut未按预期执行

2 个答案: