xcode中使用tic tac toe的手势识别器问题

import UIKit

var currentPlayer: String = "X"

override func viewDidLoad() {
    super.viewDidLoad()
    
    for button in buttons {
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap(_:)))
        button.addGestureRecognizer(tapGesture)
    }
}

@objc func handleTap(_ gesture: UITapGestureRecognizer) {
    guard let button = gesture.view as? UIButton else { return }
    
    // 检查按钮是否已经被点击过
    if button.currentTitle == nil {
        // 更新按钮的标题为当前玩家的信息
        button.setTitle(currentPlayer, for: .normal)
        
        // 切换当前玩家
        currentPlayer = (currentPlayer == "X") ? "O" : "X"
        
        // 在这里添加检查游戏胜利的逻辑
    }
}