使用未解析的标识符“winnerLabel”

Posted 2023-02-26

【中文标题】使用未解析的标识符“winnerLabel”

【英文标题】：use of unresolved identifier "winnerLabel"

【发布时间】：2016-08-26 22:50:42

【问题描述】：

我得到了几个不同变量的未解析标识符。我在 viewController 类中定义了变量，但是由于某种原因，当我将它们添加到 viewDidLoad() 函数时出现错误。有什么建议么？提前致谢！我在新的 Xcode v8 beta 6 中使用 Swift3

导入 UIKit

class ViewController: UIViewController     
    @IBOutlet weak var playAgainButton: UIButton!
    @IBOutlet weak var winnerLabel: UILabel!
    @IBAction func playAgain(_ sender: AnyObject) 
    
    //1 is noughts, 2 is crosses
    var activeGame = true
    var activePlayer = 1
    var gameState = [0, 0, 0, 0, 0, 0, 0, 0, 0] //0 - empty, 1 - noughts, 2 - crosses
    let winningCombination = [[0, 1, 2], [3, 4, 5], [6, 7, 8], [0, 3, 6], [1, 4, 7], [2, 5, 8], [0, 4, 8], [2, 4, 6]]
    @IBAction func buttonPressed(_ sender: AnyObject) 
        let activePosition = sender.tag - 1
        if gameState[activePosition] == 0 && activeGame 
            gameState[activePosition] = activePlayer
            if activePlayer == 1 
                sender.setImage(UIImage(named: "nought.png"), for: [])
                print(sender.tag)
                activePlayer = 2
             else 
                sender.setImage(UIImage(named: "cross.png"), for: [])
                print(sender.tag)
                activePlayer = 1  
            
            for combination in winningCombination    
                if gameState[combination[0]] != 0 && gameState[combination[0]] == gameState[combination[1]] && gameState[combination[1]] == gameState[combination[2]] 
                    //we have  winner!
                    activeGame = false
                    print(gameState[combination[0]])
                    if gameState[combination[0]] == 1 
                        winnerLabel.text = "Noughts has won!"                        
                     else                         
                        winnerLabel.text = "Crosses has won!"                        
                                        
                    UIView.animate(withDuration: 1, animations:                         
                        self.winnerLabel.center = CGPoint(x: self.winnerLabel.center.x + 500, y: self.winnerLabel.center.y)
                        self.playAgainButton.center = CGPoint(x: self.playAgainButton.center.x + 500, y: self.playAgainButton.center.y)
                    )
                                    
            
        
    


func viewDidLoad() 
    viewDidLoad()    
    winnerLabel.isHidden = true
    playAgainButton.isHidden = true    
    winnerLabel.center = CGPoint(x: winnerLabel.center.x - 500, y: winnerLabel.center.y)
    playAgainButton.center = CGPoint(x: playAgainButton.center.x - 500, y: playAgainButton.center.y)   


func didReceiveMemoryWarning() 
    didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.

【参考方案1】：

检查你的花括号。 viewDidLoad 之前你有太多了，那么你需要在最后一个来关闭课程。

另外，viewDidLoad() 和 didReceiveMemoryWarning() 函数前面应该有关键字 override：

override func viewDidLoad() 

【讨论】：

谢谢！是的，我拿走了覆盖和超级，因为我遇到了一个错误，它建议把它拿走。但我把它们加回来了。欣赏它