当我第一次快速点击按钮时，按钮点击不适用于 UITapGestureRecognizer

Posted 2023-02-27

【中文标题】当我第一次快速点击按钮时，按钮点击不适用于 UITapGestureRecognizer

【英文标题】：Button click is not working with UITapGestureRecognizer when i tapped first time on the button in swift

【发布时间】：2017-09-06 12:30:26

【问题描述】：

我在按钮单击时实现了 UITapGestureRecognizer 和 UILongPressGestureRecognizer。我的问题是当我第一次点击按钮时它不起作用，但当我第二次按下按钮时它开始工作。

let longGesture = UILongPressGestureRecognizer(target: self, action: #selector(longTap(_:)))
    longGesture.minimumPressDuration = 0.5
    button.addGestureRecognizer(longGesture)
    let tapGesture = UITapGestureRecognizer(target: self, action: #selector(normalTap(_:)))
    tapGesture.delegate = self
    tapGesture.numberOfTouchesRequired = 1
    tapGesture.numberOfTapsRequired = 1
    button.addGestureRecognizer(tapGesture) 
 @objc func longTap(_ sender: UIGestureRecognizer)
    print("long tap")


@objc func normalTap(_ sender: UIGestureRecognizer)

    print("Normal tap")

【问题讨论】：

你有没有在 IBAction ButtonClicked 中长按这个？

您是否尝试仅添加 1 个 tapGesture 并检查是否触发了回调？

为什么你没有被尝试addTarget 替代UITapGestureRecognizer

其他使用 button.addGestureRecognizer(tapGesture) button.addGestureRecognizer(longGesture) 代替 button.addGestureRecognizer(longGesture), button.addGestureRecognizer(tapGesture)

看到这个***.com/questions/34548263/…

【参考方案1】：

试试这个

class ViewController: UIViewController, UIGestureRecognizerDelegate 

@IBOutlet weak var button: UIButton!
override func viewDidLoad() 
     super.viewDidLoad()
     // Do any additional setup after loading the view, typically from a nib.
     let longGesture = UILongPressGestureRecognizer(target: self, action: #selector(longTap(_:)))
     longGesture.minimumPressDuration = 0.5
     button.addGestureRecognizer(longGesture)
 


 @IBAction func buttonClicked(_ sender: Any) 
     let tapGesture = UITapGestureRecognizer(target: self, action: #selector(normalTap(_:)))
     tapGesture.delegate = self
     tapGesture.numberOfTouchesRequired = 1
     tapGesture.numberOfTapsRequired = 1
     button.addGestureRecognizer(tapGesture)
 

 @objc func longTap(_ sender: UIGestureRecognizer)
     print("long tap")
 

 @objc func normalTap(_ sender: UIGestureRecognizer)
     print("Normal tap")
   

【讨论】：

讲道理兄弟。我已经将这两个手势都放在视图中加载，然后只能正常工作。感谢您提供线索.. 将这两个手势放在视图中加载功能，以便我可以投票给你的答案。