iOS Swift 3 - UICollectionViewCell中的UIStackView上的UIButton没有响应tap事件（没有交互）

Question

我有一个UICollectionViewCell子类，上面有UIStackView。 StackView填充了UIButtons，一切看起来都很好 但是这些按钮是不可用的。

如果我在UIScrollView上设置相同的按钮（为了实验）而不是在堆栈视图上，按钮响应很好，所以看起来堆栈视图的某些东西导致问题

有什么想法吗？

以下是我如何向StackView添加按钮的代码

 func prepareStackView(buttonsArray: Array<UIButton>) {


    var rect:CGRect = (stackView?.frame)!
    rect.size.width = btn.frame.size.width * buttonsArray.count
    stackView?.frame = rect //The frame of the stackview is set as such so that it looks exactly like I want


    //Add all the buttons
    for btn in buttonsArray {
            //The buttons already have their selectors set
            stackView?.addArrangedSubview(btn)
    }


 }

Answer 1

将此代码用于UIButton以响应点击事件：

override func hitTest(_ point: CGPoint, with event: UIEvent?) -> UIView? {

    if clipsToBounds || isHidden || alpha == 0 {
        return nil
    }

    for subview in subviews.reversed() {
        let subPoint = subview.convert(point, from: self)
        if let result = subview.hitTest(subPoint, with: event) {
            return result
        }
    }

    return nil
}

有用的链接：

Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:

我也遇到过类似的问题而且能够解决。请查看我的帖子，我已经描述了这种原因的情景，并试图解释我是如何解决的。

UIButton is not clickable after first click