UITapGestureRecognizer 不适用于 UIView 动画

Posted 2023-02-27

【中文标题】UITapGestureRecognizer 不适用于 UIView 动画

【英文标题】：UITapGestureRecognizer does not work with UIView animate

【发布时间】：2017-12-27 20:24:09

【问题描述】：

当我在 UIImage 动画时点击它时，我试图调用一个动作。 我见过类似的问题，但我无法将这些解决方案应用于我的案例。 请帮忙。

xcode 9.2 迅速 4

import UIKit

class MyCalssViewController: UIViewController 

    @IBOutlet weak var myImageView: UIImageView!

    override func viewDidLoad() 
        super.viewDidLoad()

        // action by tap
        let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
        myImageView.addGestureRecognizer(gestureSwift2AndHigher)

    

    // action by tap
    @objc func actionUITapGestureRecognizer ()

        print("actionUITapGestureRecognizer - works!") // !!! THIS DOES NOT WORK !!!

    

    // hide UIImage before appear
    override func viewWillAppear(_ animated: Bool) 
        super.viewWillAppear(animated)

        myImageView.center.y += view.bounds.height

    

    // show UIImage after appear with animation
    override func viewDidAppear(_ animated: Bool) 
        super.viewDidAppear(animated)

        UIView.animate(withDuration: 10, animations: 
            self.myImageView.center.y -= self.view.bounds.height
        )
    

【问题讨论】：

查看***.com/questions/37818440/…

“我见过类似的问题，但我无法应用这些解决方案”这些解决方案是什么？

【参考方案1】：

您只是漏掉了一行，在视图上启用了用户交互。

override func viewDidLoad() 
    super.viewDidLoad()

    // action by tap
    let gestureSwift2AndHigher = UITapGestureRecognizer(target: self, action:  #selector (self.actionUITapGestureRecognizer))
    myImageView.isUserInteractionEnabled = true
    myImageView.addGestureRecognizer(gestureSwift2AndHigher)

【讨论】：

thnx，但这行没有帮助

【参考方案2】：

  let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.clickedImageView(_:)))
  myImageview.isUserInteractionEnabled = true
  myImageview.addGestureRecognizer(tapGesture)

// MARK: - Gesture Recognizer action

    func clickedImageView(_ sender: UITapGestureRecognizer) 
       // Write your action here.
    

【讨论】：

这部分“_发件人：UITapGestureRecognizer”没有任何改变

发件人将通过特定的 UITapGestureRecognizer 进行验证

我明白，但是当 ImageView 动画时，点击操作仍然不起作用

可以分享动画功能吗

请看高一点，我已经在我的问题中做到了" // 在出现之前隐藏 UIImage override func viewWillAppear(_ animated: Bool) super.viewWillAppear(animated) myImageView.center.y += view.bounds.height // 显示 UIImage 后出现动画覆盖 func viewDidAppear(_ animated: Bool) super.viewDidAppear(animated) UIView.animate(withDuration: 10, animations: self.myImageView.center.y -= self.view.bounds.height ) "

【参考方案3】：

你需要像这样传入选项.allowUserInteraction：

UIView.animate(withDuration: 10, delay: 0, options: .allowUserInteraction, animations: 
    ...
)