如何在Swift中的iOS上使用FirebaseUI进行Google身份验证？

问题描述

我遵循）进行身份验证。

用户界面显示成功，我可以点击使用Google登录，然后完成网络登录流程。该应用程序重新打开身份验证网址，但authUI功能永远不会触发。什么是错的？

  func application（application：UIApplication，didFinishLaunchingWithOptions launchOptions：[NSObject：AnyObject]？） - > Bool {
 //在应用程序启动后替代自定义点。 
 FIRApp.configure（）
 
 let authUI = FIRAuthUI.authUI（）!; 
 NSLog（建立委托）; 
 authUI.delegate = self; 
 
 let googleAuthUI = FIRGoogleAuthUI.init（clientID：FIRApp.defaultApp（）!. options.clientID）; 
 
 authUI.signInProviders = [googleAuthUI！]; 
 
 
 mSplitViewController = self.window！.rootViewController as！ UISplitViewController 
 
 
 self.window！.rootViewController = authUI.authViewController（）; 
 
返回true 
 
 
 func authUI（authUI：FIRAuthUI，didSignInWithUser用户：FIRUser ?,错误：NSError？）{
 //实现这个方法处理登录用户或错误，如果有的话。 
 NSLog（登录）; 
 
 self.window！.rootViewController = mSplitViewController 
 let navigationController = mSplitViewController！.viewControllers [mSplitViewController！.viewControllers.count-1] as！ UINavigationController 
 $ b $ navigationController.topViewController！.navigationItem.leftBarButtonItem = mSplitViewController！.displayModeButtonItem（）
 mSplitViewController！.delegate = self 
 
 let masterNavigationController = mSplitViewController！ 
 .viewControllers [0] as！ UINavigationController 
让controller = masterNavigationController.topViewController as！ MasterViewController 
 controller.managedObjectContext = self.managedObjectContext 
 
 
 $ b func application（application：UIApplication，
 openURL url：NSURL，options：[String： AnyObject]） - > Bool {
 NSLog（用url \（url）打开）; 
 FIRAuthUI.authUI（）!. delegate = self; 
返回FIRAuthUI.authUI（）!. handleOpenURL（url，sourceApplication：options [UIApplicationOpenURLOptionsSourceApplicationKey] as！String）; 
 
  

解决方案

解决方案，但这个StackOverflow的问题已经链接到FirebaseUI仓库的问题部分和有人在那里回应;

Obj-C：
有一个错误，防止 [[FIRAuthUI authUI] authViewController] 被用作应用程序的根视图控制器。解决方法是使用占位符视图控制器作为应用程序的根视图控制器，然后将<$ c

对于Swift用户：
有一个bug防止将 FIRAuthUI.authUI（）。authViewController（）用作应用程序的根视图控制器。解决方法是使用占位符视图控制器作为应用程序的根视图控制器，然后在它上面显示 FIRAuthUI.authUI（）。authViewController（）。 b
$ b

链接：

I'm following https://firebase.google.com/docs/auth/ and want to use FirebaseUI (https://github.com/firebase/FirebaseUI-iOS/tree/master/FirebaseUI) for authentication.

The UI shows successfully and I'm able to click "sign in with google" and then complete the web sign in flow. The app re-opens with the auth url, but the authUI function never fires. What's wrong?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    FIRApp.configure()

    let authUI = FIRAuthUI.authUI()!;
    NSLog("setting up delegate");
    authUI.delegate = self;

    let googleAuthUI = FIRGoogleAuthUI.init(clientID:FIRApp.defaultApp()!.options.clientID);

    authUI.signInProviders = [googleAuthUI!];


    mSplitViewController = self.window!.rootViewController as! UISplitViewController


    self.window!.rootViewController = authUI.authViewController();

    return true
}

    func authUI(authUI: FIRAuthUI, didSignInWithUser user: FIRUser?, error:NSError?) {
    // Implement this method to handle signed in user or error if any.
    NSLog("logged in");

    self.window!.rootViewController = mSplitViewController
    let navigationController = mSplitViewController!.viewControllers[mSplitViewController!.viewControllers.count-1] as! UINavigationController

    navigationController.topViewController!.navigationItem.leftBarButtonItem = mSplitViewController!.displayModeButtonItem()
    mSplitViewController!.delegate = self

    let masterNavigationController = mSplitViewController!
        .viewControllers[0] as! UINavigationController
    let controller = masterNavigationController.topViewController as! MasterViewController
    controller.managedObjectContext = self.managedObjectContext
}


func application(application: UIApplication,
    openURL url: NSURL, options: [String: AnyObject]) -> Bool {
        NSLog("opened with url \(url)");
        FIRAuthUI.authUI()!.delegate = self;
        return FIRAuthUI.authUI()!.handleOpenURL(url, sourceApplication:options[UIApplicationOpenURLOptionsSourceApplicationKey] as! String);
}

解决方案

I haven't tried this solution but this StackOverflow problem was linked to the FirebaseUI repo's issues section and someone there responded;

Obj-C:"There's a bug that prevents [[FIRAuthUI authUI] authViewController] from being used as the root view controller of your app. The workaround is to use a placeholder view controller as your app's root view controller, then present [[FIRAuthUI authUI] authViewController] on top of it."

for Swift users:There's a bug that prevents FIRAuthUI.authUI().authViewController() from being used as the root view controller of your app. The workaround is to use a placeholder view controller as your app's root view controller, then present FIRAuthUI.authUI().authViewController() on top of it.

Link: https://github.com/firebase/FirebaseUI-iOS/issues/65

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