UIGestureRecognizer阻止子视图处理触摸事件

class ParentView: UIView {
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        // 处理触摸事件
    }
}

class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let parentView = ParentView()
        let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(handleTap))
        gestureRecognizer.delegate = self
        parentView.addGestureRecognizer(gestureRecognizer)
        view.addSubview(parentView)
    }
    
    @objc func handleTap(sender: UITapGestureRecognizer) {
        // 处理手势
    }
}

extension ViewController: UIGestureRecognizerDelegate {
    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldReceive touch: UITouch) -> Bool {
        // 判断触摸事件是否应该被处理
        return true
    }
}