ios - Facebook 注册在 if 语句中使用了错误的 segue - Swift

Question

因此，在我的 iOS 应用程序的第一个屏幕上，我有一个“登录”、“注册”和一个“通过 Facebook 注册”按钮。前两个按钮可以很好地链接到它们自己的 View Controller ，一旦登录模拟器将自动使用以下命令登录它们:

if PFUser.currentUser() != nil {

      self.performSegueWithIdentifier("autoSegue", sender: self)

            } else {

您可以在下面完整代码块的底部看到代码。然而，Facebook 注册我想转换到一个单独的 View Controller ，在那里我可以向他们展示他们的个人资料图片，捕获 Parse 上的数据，让他们输入用户名，然后转到注册和登录所转到的同一 View Controller -自动继续。我已经写出了该 View Controller 上的所有代码，但我的问题是，当他们单击 Facebook 的注册按钮时，它会通过 autoSegue 而不是 fbSignup segue(链接到我想要捕获的位置的那个) FB 数据)。两个 Segues 都直接从 View Controller 链接(而不是按钮本身)，并且我没有收到任何构建错误。我感谢任何帮助。

谢谢!

完整代码:

import UIKit

import Parse

import MediaPlayer

import FBSDKCoreKit







class ViewController: UIViewController {

    @IBOutlet var loginAlpha: UIButton!

    @IBOutlet var signupAlpha: UIButton!




    var avPlayer: AVPlayer!

    var avPlayerLayer: AVPlayerLayer!

    var paused: Bool = false





    @IBAction func facebookSignup(sender: AnyObject) {



        let permissions = ["public_profile"]



        PFFacebookUtils.logInInBackgroundWithReadPermissions(permissions) { (user: PFUser?, error: NSError?) -> Void in



            if let error = error {



                print(error)



            } else {



                if let user = user {



                    self.performSegueWithIdentifier("fbSignup", sender: self)

                }





            }





        }







    }

    override func viewDidLoad() {

        super.viewDidLoad()




        // code for background video



                let theURL = NSBundle.mainBundle().URLForResource("test", withExtension: "mp4")



                avPlayer = AVPlayer(URL: theURL!)

                avPlayerLayer = AVPlayerLayer(player: avPlayer)

                avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill

                avPlayer.volume = 0

                avPlayer.actionAtItemEnd = AVPlayerActionAtItemEnd.None



                avPlayerLayer.frame = view.layer.bounds

                view.backgroundColor = UIColor.clearColor();

                view.layer.insertSublayer(avPlayerLayer, atIndex: 0)



                NSNotificationCenter.defaultCenter().addObserver(self,

                    selector: "playerItemDidReachEnd:",

                    name: AVPlayerItemDidPlayToEndTimeNotification,

                    object: avPlayer.currentItem)

            }



            func playerItemDidReachEnd(notification: NSNotification) {

                let p: AVPlayerItem = notification.object as! AVPlayerItem

                p.seekToTime(kCMTimeZero)

            }



            override func viewDidAppear(animated: Bool) {



                if PFUser.currentUser() != nil {



                    self.performSegueWithIdentifier("autoSegue", sender: self)

                } else {







                signupAlpha.alpha = 0

                loginAlpha.alpha = 0



                UIView.animateWithDuration(1.5, delay: 1.0, options: [], animations: { () -> Void in

                    self.signupAlpha.alpha = 1.0

                    self.loginAlpha.alpha = 1.0



                    }, completion: nil)



                    avPlayer.play()

                    paused = false

            }

    }



            override func viewDidDisappear(animated: Bool) {

                avPlayer.pause()

                paused = true

            }







    override func didReceiveMemoryWarning() {

        super.didReceiveMemoryWarning()

        // Dispose of any resources that can be recreated.

}

}

Answer 1

您正在使用 Storyboard吗？您可能搞乱了 Storyboard并将 Segue 连接到了错误的 ViewController。

我看不出您的代码有什么特别错误。