Question

我有一个MasterController: UIViewController
里面是一个UIView（mainViewContainer）-> self.frame
mainViewContainer包含MainViewController: UIViewController
MainViewController的mainCollectionView: UICollectionView水平具有3个单元格
mainCollectionView单元格内部有一个UITableView

我已在MasterController的视图中添加了一个UITapGestureRecognizer，以在UITableView中执行操作。

它在第一个CollectionViewCell中工作正常，但是当我滚动到下一个单元格时，轻击手势仅在3次点击后才响应，但是我希望它在第一次点击时像在第一个单元格中一样做出响应。

注意：3次点击后，单次点击即可正常工作。仅在构建后初始化应用程序时才会发生这种情况。

这是在我的tableViewCell中：

class CustomTableViewCell: UITableViewCell {

  let customView: UIView = {
     let view = UIView()
     view.backgroundColor = .white
     view.translatesAutoresizingMaskIntoConstraints = false
     return view
  }()

  let moreButton: UIButton = {
        let button = UIButton(type: .system)
        button.setImage(#imageLiteral(resourceName: "moreButton").withRenderingMode(.alwaysOriginal), for: .normal)
        button.contentMode = .scaleAspectFit
        button.translatesAutoresizingMaskIntoConstraints = false
        return button
    }()

  lazy var tapGesture: UITapGestureRecognizer = {
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTapGesture(_:)))
        tapGesture.cancelsTouchesInView = false
        return tapGesture
    }()

  var master = UIApplication.shared.keyWindow?.rootViewController as? MasterViewController

  var isCustomViewOpen = false

  override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)

        setupCustomView()
        setupMoreButton()

        master?.view.addGestureRecognizer(tapGesture)
  }

  func setupCustomView() {
        customView.layer.cornerRadius = 7
        addSubview(customView)
        NSLayoutConstraint.activate([
            customView.topAnchor.constraint(equalTo: topAnchor, constant: 10),
            customView.leftAnchor.constraint(equalTo: leftAnchor, constant: 10),
            customView.rightAnchor.constraint(equalTo: rightAnchor, constant: -10),
            customView.bottomAnchor.constraint(equalTo: bottomAnchor, constant: -10),
            ])
    }

    func setupMoreButton() {
        customView.addSubview(moreButton)
        moreButton.addTarget(self, action: #selector(handleMoreButton(_:)), for: .touchDown)
        NSLayoutConstraint.activate([
            moreButton.heightAnchor.constraint(equalToConstant: 15),
            moreButton.widthAnchor.constraint(equalToConstant: 20),
            moreButton.centerYAnchor.constraint(equalTo: customView.centerYAnchor),
            moreButton.trailingAnchor.constraint(equalTo: customView.trailingAnchor, constant: -20)
            ])
    }

    @objc func handleMoreButton(_ sender: UIButton) {
        isCustomViewOpen ? slideCustomViewRight() : slideCustomViewLeft()
    }

    func performAnimations(transform: CGAffineTransform) {
        UIView.animate(withDuration: 0.3, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 1, options: .curveEaseOut, animations: {
            self.customView.transform = transform
        })
    }

    func slideCustomViewLeft() {
        isCustomViewOpen = true
        performAnimations(transform: CGAffineTransform(translationX: -self.frame.width/3.2, y: 0))
        tapGesture.isEnabled = true
    }

    func slideCustomViewRight() {
        isCustomViewOpen = false
        performAnimations(transform: .identity)
        tapGesture.isEnabled = false
    }

    @objc func handleTapGesture(_ sender: UITapGestureRecognizer) {
        slideCustomViewRight()
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }


}

Answer 1

我之前曾尝试过shouldRecognizeSimultaneouslyWith otherGestureRecognizer:，但我想我在某处做错了事。

感谢@Scriptable在评论中再次尝试，现在可以使用。如果没有任何效果，我们应该始终返回并重试。

通过以下方式解决：

首先将委托函数添加到MasterViewController->

extension MasterViewController: UIGestureRecognizerDelegate {

    func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
        return true
    }
}

然后添加代表以点击手势->

var master = UIApplication.shared.keyWindow?.rootViewController as? MasterViewController

tapGesture.delegate = master

uiapgesture仅在3次点击后响应

1 个答案: