动画高度时点击手势没有响应

Question

我正在玩点按手势来为 UIView 的高度设置动画，我想要实现的是打开关闭或做一些下拉。如果我不使用 if else 语句，我的点击手势会起作用。但反过来不行。这是我的代码。

class DailyAbsenceCell: UICollectionViewCell {

    @IBOutlet weak var mainContainer: UIView!
    @IBOutlet weak var calendarView: JKCalendar!
    @IBOutlet weak var mainContainerHeightConstraint: NSLayoutConstraint!

    override func awakeFromNib() {
        super.awakeFromNib()
        // Initialization code
        let tapGesture = UITapGestureRecognizer(target: self, action: #selector(handleTap))
        mainContainer.addGestureRecognizer(tapGesture)
        mainContainerHeightConstraint.constant = 75
        calendarView.alpha = 0
    }

    @objc func handleTap(gesture: UITapGestureRecognizer) {
        if gesture.state == .changed {
            mainContainerHeightConstraint.constant = 370
            calendarView.alpha = 1
            print("Tapped")
        } else {
            mainContainerHeightConstraint.constant = 75
            calendarView.alpha = 0
        }
    }
}

谢谢！！

Answer 1

if gesture.state == .changed 永远不会是真的。点击手势识别器没有改变的状态。事实上根本不需要检查它的状态。

将此更改为

if mainContainerHeightConstraint.constant == 75

动画高度时点击手势没有响应

tap gesture not responding while animating height

uigesturerecognizer

uitapgesturerecognizer

uicollectionview

uicollectionviewcell

swift