func正在重置平移手势的位置

问题描述

每次调用func时，func addBlackView函数都会添加黑视图。黑色视图连接到uiPangesture，问题是evertyime，函数func addblackview被称为代码正在重置第一个黑色已移动到的位置。您可以在下面的gif文件中看到什么。我只希望第一个黑色视图不移动，并且如果调用了新的黑色视图，则将其保持在相同位置。

  import UIKit
class ViewController: UIViewController {

var image1Width2: NSLayoutConstraint!
var iHieght: NSLayoutConstraint!
var currentView = UIView()
override func viewDidLoad() {
    super.viewDidLoad()

    view.addSubview(currentView)
    
    

    view.addSubview(button)
    button.translatesAutoresizingMaskIntoConstraints = false
    NSLayoutConstraint.activate([
        button.trailingAnchor.constraint(equalTo: view.trailingAnchor,constant: -16),button.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor,constant: 16),button.widthAnchor.constraint(equalToConstant: 100),button.heightAnchor.constraint(equalToConstant: 80),])
    button.addTarget(self,action: #selector(addBlackView),for: .touchUpInside)
   

}

let slider:UISlider = {
    let slider = UISlider(frame: .zero)
    return slider
}()

private lazy var button: UIButton = {
    let button = UIButton()
    button.backgroundColor = .blue
    button.setTitleColor(.white,for: .normal)
    button.setTitle("add",for: .normal)
    return button
}()

let blackView: UIView = {
    let view = UIView()
    view.backgroundColor = .black
  
    return view
}()
    var count = 0
    @objc
    private func addBlackView() {
        let newBlackView = UIView(frame: CGRect(x: 20,y: 20,width: 100,height: 100)) // whatever frame you want
        newBlackView.backgroundColor = .orange
        self.view.addSubview(newBlackView)
        self.currentView = newBlackView
        let recognizer = UIPanGestureRecognizer(target: self,action: #selector(moveView(_:)))
                   newBlackView.addGestureRecognizer(recognizer)
        newBlackView.isUserInteractionEnabled = true
        image1Width2 = newBlackView.widthAnchor.constraint(equalTo: view.widthAnchor,multiplier: 0.1)
        image1Width2.isActive = true
      iHieght = newBlackView.heightAnchor.constraint(equalTo: view.heightAnchor,multiplier: 0.1)
        iHieght.isActive = true
        
        count += 1
        newBlackView.tag = (count)

        newBlackView.translatesAutoresizingMaskIntoConstraints = false
        newBlackView.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
        newBlackView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true

    }


@objc private func moveView(_ recognizer: UIPanGestureRecognizer) {
    switch recognizer.state {
  
     
    case .changed:
        let translation = recognizer.translation(in: self.view)

        recognizer.view!.center = .init(x: recognizer.view!.center.x + translation.x,y: recognizer.view!.center.y + translation.y)
        recognizer.setTranslation(.zero,in: self.view)
    default:
        break
    }
}

    }
  

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）