触屏事件和触摸手势

UIRsponder

import UIKit

class ViewController: UIViewController{

    override func viewDidLoad() {
        super.viewDidLoad()

    }

    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        let touch = touches.first
        let touchPoint = touch?.location(in: self.view)
        
    }
    
    override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
        <#code#>
    }
    
    override func touchesMoved(_ touches: Set<UITouch>, with event: UIEvent?) {
        <#code#>
    }
    
    override func touchesCancelled(_ touches: Set<UITouch>, with event: UIEvent?) {
        <#code#>
    }

}

UItouch 常用属性

let view
view.isUserInteractionEnabled = true
let gesture = UITapGestureRecognizer
/*
UILongPressGestureRecognizer
UIPinchGestureRecognizer
*/
guesture.numberOfTapsRequired = 2 // 点击次数
guesture.numberOfTouchesRequired = 1 // 第几手指数量