performSegue(withIdentifier .......)无效

Question

长话短说,我的segue无法执行到我已创建的下一个控制器.很多帮助将不胜感激.

    override func viewDidLoad() {
        super.viewDidLoad()


        var returnValue: Int = UserDefaults.standard.integer(forKey: "quiz1Validation")
        if (returnValue == 1)
        {
            performSegue(withIdentifier: "completed", sender: self)
        }
        else {
        var returnValue: Int = UserDefaults.standard.integer(forKey: "userScore")
        scorelabel.text = "Score:\(returnValue)"
        RandomQuestions()
    }

}

Answer 1

您无法从viewDidLoad调用performSeugue.你必须从viewDidAppear调用它.