Question

在swift中，我添加了Facebook登录信息。这些是我的代表：

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {
    return FBSDKApplicationDelegate.sharedInstance().application(app,open: url,sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String, annotation: options[UIApplicationOpenURLOptionsKey.annotation])
}

func applicationDidBecomeActive(_ application: UIApplication) {
    FBSDKAppEvents.activateApp()
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    FIRApp.configure()
    IQKeyboardManager.sharedManager().enable = true
     FBSDKApplicationDelegate.sharedInstance().application(application, didFinishLaunchingWithOptions: launchOptions)
    return true
}

单击登录按钮时会调用此函数：

@IBAction func facebookLogin(_ sender: Any) {
    let facebookLogin = FBSDKLoginManager()
    print("Logging In")
    facebookLogin.logIn(withReadPermissions: ["email", "public_profile", "user_friends"],  from: self, handler:{(facebookResult, facebookError) -> Void in
        if facebookError != nil { print("Facebook login failed. Error \(facebookError)")
        } else if (facebookResult?.isCancelled)! { print("Facebook login was cancelled.")
        } else { print("Logged in")}
    });
}

但是，我从未看到登录，但我确实看到登录。

其他代码：

loginButton.readPermissions = ["email", "public_profile", "user_friends"]
loginButton.delegate = self

我已经将UIButtons类设置为FBSDKLoginButton

我刚登录时也不会在viewDidLoad（）中打印：

if (FBSDKAccessToken.current() != nil)
{
    print("user already logged in")
}

我试过了： Facebook login - stays at white web page SWIFT 和Facebook Authentication - Blank white screen during authentication - iOS 10 GM, Swift 3

然而答案对我不起作用。在获得许可后，safari会加载一个空白页面，之后不会执行任何操作。如何在获得许可后将用户重定向到我的应用程序？

经Facebook许可后，屏幕为空白

0 个答案: