iOS firebase:未调用FIRAuthUIDelegate.authUI

Question

我试图从AppDelegate.swift启动谷歌登录,然后在登录成功后启动我的应用程序的主屏幕.

我能够

1. 显示google登录按钮,如上所示

2. 用户被发送到谷歌登录

3. 用户被送回原件(步骤1)

在第3步之后.我想将用户发送到我应用的主页面.

我的代码如下.我遇到的问题authUI是没有被调用.

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, FIRAuthUIDelegate {
    var window: UIWindow?
    var authUI: FIRAuthUI?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        FIRApp.configure()

        authUI = FIRAuthUI.defaultAuthUI()
        authUI?.delegate = self
        let providers: [FIRAuthProviderUI] = [FIRGoogleAuthUI()]
        authUI?.providers = providers

       // show google login button
       let authViewController = authUI?.authViewController()
       self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
       self.window?.rootViewController = authViewController
       self.window?.makeKeyAndVisible()
       return true
    }

    func application(application: UIApplication, openURL url: NSURL, options: [String: AnyObject]) -> Bool {
       return GIDSignIn.sharedInstance().handleURL(url, sourceApplication: options[UIApplicationOpenURLOptionsSourceApplicationKey] as? String, annotation: options[UIApplicationOpenURLOptionsAnnotationKey])
    }

    func authUI(authUI: FIRAuthUI, didSignInWithUser user: FIRUser?, error: NSError?) {
        // launch main view controller
    }
}

编辑:这似乎是另一个问题的重复.另一个问题的标题非常笼统,只能深入细节.无论如何,我相信克里斯的答案比那里的答案更彻底.我认为这里的问题和答案都更清晰,更尖锐,更彻底,因此如果将此标记为重复,那么将此处的人员引导到那里是错误的.

Answer 1

我觉得你的问题就出在这里,在- (void)signInWithProviderUI:(id<FIRAuthProviderUI>)providerUI方法.

委托方法在dismissViewControllerAnimated:completion:完成块中调用.

[self.navigationController dismissViewControllerAnimated:YES completion:^{
        [self.authUI invokeResultCallbackWithUser:user error:error];
      }];

正如您从Apple文档中看到的那样,期望在模态呈现的viewController上调用此方法.您将其显示为根视图控制器.尝试用a的模态显示它UIViewController,事情应该解决.要调试此尝试并在第193行设置断点,以确保它不会被命中.如果在模态显示authController时这不起作用,我会非常惊讶.

为您的问题提出可能的解决方案(我假设您希望确保用户在使用您的应用程序之前已登录).以下是我目前在应用程序中使用的简化.

编辑:已更新为新的1.0.0 FirebaseUI语法.

class MainTabController: UITabBarController, FIRAuthUIDelegate {

    let authUI: FUIAuth? = FUIAuth.defaultAuthUI()

    override func viewDidLoad() {
        super.viewDidLoad()
        var authProviders =  [FUIFacebookAuth(), FUIGoogleAuth()]
        authUI.delegate = self
        authUI.providers = authProviders

        //I use this method for signing out when I'm developing  
        //try! FIRAuth.auth()?.signOut()

    }

    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)

        if !isUserSignedIn() {
            showLoginView()
        }
    }

    private func isUserSignedIn() -> Bool {
      guard FIRAuth.auth()?.currentUser != nil else { return false }
      return true
    }

    private func showLoginView() {
      if let authVC = FUIAuth.defaultAuthUI()?.authViewController() {
        present(authVC, animated: true, completion: nil)
      }
   }
    func authUI(_ authUI: FUIAuth, didSignInWith user: FIRUser?, error: Error?) {
        guard let user = user else {
            print(error)
            return
        }

        ...
    }