Question

我正在尝试为单词打扰器应用制作排行榜，因此我先保存数据，然后再选择到最终将成为排行榜的下一个视图控制器。我的所有插座均已连接，并且正确输入了segue标识符，所以我看不到为什么按下完成后应用程序崩溃

错误行出现在这里：类AppDelegate：UIResponder，UIApplicationDelegate {

var finalScore = Int()
var playerName = String()
var allMyStoredData = UserDefaults.standard
class secondVC: UIViewController {

    @IBOutlet weak var scoreLabel: UILabel!
    @IBOutlet weak var nameTF: UITextField!
    @IBOutlet weak var doneButton: UIButton!
    var playerScore = 0

    override func viewDidLoad() {
        super.viewDidLoad()
        scoreLabel.text = "Your score is: \(finalScore)"
        loadData()
    }

    @IBAction func donePressed(_ sender: Any) {
        saveData()
        //this part won't execute
        performSegue(withIdentifier: "toLeaderboard", sender: self)
    }

    func saveData () {
        playerName = nameTF.text!
        playerScore = finalScore
        allMyStoredData.set(playerName, forKey: "saveTheName")
        allMyStoredData.set(playerScore, forKey: "saveTheScore")
    }

    func loadData () {
        if let loadPlayerName:String = UserDefaults.standard.value(forKey: "saveTheName") as? String {
            playerName = loadPlayerName
        }

        if let loadTheScore:Int = UserDefaults.standard.value(forKey: "saveTheName") as? Int {
            playerScore = loadTheScore
        }
    }
}

Answer 1

更新：视图控制器中有一个插座，未连接或使用过“ toLeaderboard”，所以我删除了它，现在代码正常了

按下按钮后迅速出现SIGABRT错误-segue无法执行

1 个答案: