Firebase iOS-类型"LoginViewController"不符合协议"FUIAuthDelegate" [英] Firebase iOS - Type 'LoginViewController' does not conform to protocol 'FUIAuthDelegate'

问题描述

我正在将Firebase Auth UI集成到我的应用程序中，由于某种原因，我一直收到此错误:

I'm in the process of integrating the Firebase Auth UI to my app, and for some reason I keep getting this error:

Type 'LoginViewController' does not conform to protocol 'FUIAuthDelegate'

在您开始不屑一顾我之前，我保证我不是白痴. FUIAuthDelegate仅具有一个必需的功能，该功能在问题检查器的更下方列出:

Before you start downvoting me into oblivion, I promise that I'm not an idiot. The FUIAuthDelegate only has one required function, which is listed farther down in the issue inspector:

Protocol requires function 'authUI(_:didSignInWith:error:)' with type '(FUIAuth, User?, Error?) -> Void'; do you want to add a stub?

然后这个:

Candidate has non-matching type '(FUIAuth, User?, Error?) -> ()'

问题是，我的类中已经包含了该函数，而且我相当确定自己遵守了协议……这是ViewController的代码:

The thing is, I've got that function in my class, and I'm fairly certain that I'm conforming to the protocol... here's my ViewController's code:

import UIKit
import FirebaseAuth
import FirebaseAuthUI


typealias FIRUser = FirebaseAuth.User

class LoginViewController: UIViewController {

    @IBOutlet weak var loginButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func loginButtonTapped(_ sender: Any) {
        print("Login Button Tapped")

        guard let authUI = FUIAuth.defaultAuthUI()
            else { return }

        authUI.delegate = self

        let authViewController = authUI.authViewController()
        present(authViewController, animated: true)    
    }
}
extension LoginViewController: FUIAuthDelegate {
    func authUI(_ authUI: FUIAuth, didSignInWith user: User?, error: Error?) {
        print("")
    }
}

我疯了吗?有人可以告诉我我在这里想念什么吗?

Am I insane? Can someone tell me what I'm missing here?

推荐答案

从LoginViewController扩展中删除FUIAuthDelegate协议:

Remove the FUIAuthDelegate protocol from the LoginViewController extension:

extension LoginViewController {
func authUI(_ authUI: FUIAuth, didSignInWith user: User?, error: Error?) {
    print("")
}

}

我刚刚确认，当我在自己的应用程序中添加FUIAuthProtocol时，遇到了与您看到的相同的错误.没有它，它运行良好.

I just confirmed that when I added FUIAuthProtocol to my own app, I got the same error you saw. Without it, it runs fine.

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