UIStackView 中的 .equalSpacing 无法与 CustomView 一起正常工作

Question

我创建了一个复选框/单选按钮的自定义视图，在选中和取消选中时会显示动画。问题是当我将自定义视图嵌入到 .equalSpacing 的 stackView 时，按钮无法再被点击，我的猜测是borderView（具有点击手势）收缩得太小，因此无法点击。

奇怪的是，即使它真的缩小了，仍然可以看到borderView。

如果是 .fillEqually 和 .fillProportionally 则可以正常工作。

我正在使用 SnapKit 来安排约束。

让我知道我是否应该在此处粘贴整个代码。

自定义视图

public final class CustomView: UIView {
    
    // MARK: - Properties
    
    private let borderedView: UIView = {
        let view = UIView()
        view.layer.borderWidth = 1
        return view
    }()
    
    private var errorStackView: UIStackView = {
        let sv = UIStackView()
        sv.isHidden = true
        return sv
    }()
    
    private var borderStackView: UIStackView = {
        let sv = UIStackView()
        return sv
    }()
    
    private var parentStackView: UIStackView = {
        let sv = UIStackView()
        return sv
    }()

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// MARK: - Lifecycle
    
    public override init(frame: CGRect) {
        super.init(frame: frame)
        setupUI()
    }
    
    public required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
        setupUI()
    }
    
    public init(button: ButtonType) {
        super.init(frame: CGRect.zero)
        setupUI()
    }
    
    public override func draw(_ rect: CGRect) {
        setNeedsDisplay()
    }

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     private func setupUI() {
        backgroundColor = .clear
        borderedView.addSubview(disabledImageView)
        
        borderedView.snp.makeConstraints { make in
            make.width.height.equalTo(borderSize)
        }
        
        borderStackView = UIStackView(arrangedSubviews: [borderedView, label])
        borderStackView.spacing = 12
        borderStackView.distribution = .fillProportionally
        
        borderStackView.snp.makeConstraints { make in
            make.height.width.equalTo(borderSize)
        }

        
        errorStackView = UIStackView(arrangedSubviews: [errorIconImageView, inlineErrorLabel])
        errorStackView.spacing = 7
        errorStackView.distribution = .fillProportionally
        
        parentStackView = UIStackView(arrangedSubviews: [borderStackView, errorStackView])
        parentStackView.axis = .vertical
        parentStackView.distribution = .fillProportionally
        addSubview(parentStackView)

        parentStackView.snp.makeConstraints { make in
            make.centerY.equalTo(self.snp.centerY)
            make.width.equalToSuperview()
        }
        
        disabledImageView.snp.makeConstraints { make in
            make
                .leading
                .trailing
                .top
                .bottom
                .height
                .width
                .equalToSuperview()
        }
        
        parentStackView.sizeToFit()
        layoutIfNeeded()
    }

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    // MARK: - Action
    
    public func addAction(action: @escaping ((Bool?) -> Void)) {
        borderedView.addGestureRecognizerOnView(target: self, #selector(handleTapGesture(sender:)))
        status = action
    }
}

视图控制器

class ViewController: UIViewController {
    
    // MARK: - Properties
    
    private lazy var checkboxDefault: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleUnchecked()
        }
        return checkbox
    }()
    
    private lazy var checkboxEnabledAndChecked: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleChecked()
        }
        return checkbox
    }()
    
    private lazy var checkboxDisableAndUnchecked: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleDisabledAndUnchecked()
        }
        return checkbox
    }()
    
    private lazy var checkboxDisableAndChecked: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleDisabledAndChecked()
        }
        return checkbox
    }()
    
    private lazy var checkboxError: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleError()
        }
        return checkbox
    }()
    
    private lazy var checkboxMultilineError: CustomView = {
        let checkbox = CustomView()
        checkbox.addAction { [weak self] checkboxStatus in
            self?.handleMultiError()
        }
        return checkbox
    }()

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 override func viewDidLoad() {

        let stackview = UIStackView(
            arrangedSubviews: [
                checkboxDefault,
                checkboxEnabledAndChecked,
                checkboxDisableAndUnchecked,
                checkboxDisableAndChecked,
                checkboxError,
                checkboxMultilineError
            ])
        
        stackview.distribution = .equalSpacing
        stackview.axis = .vertical

        view.addSubview(stackview)

        stackview.snp.makeConstraints { make in
            make.center.equalTo(view.snp.center)
            make.width.equalTo(300)
            make.height.equalTo(300)
        }
}

Answer 1

我设法通过在自定义视图中添加intrinsicContentSize 来解决这个问题

并在每次更新视图时添加 invalidateIntrinsicContentSize() 。就我而言，它在 handleTapGesture

中

// MARK: - Lifecycle

    public override var intrinsicContentSize: CGSize {
       return CGSize(width: 300, height: 50)
    }
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// MARK: - Action
    
    @objc private func handleTapGesture(sender: UITapGestureRecognizer) {
        invalidateIntrinsicContentSize() // Call this when custom view needs to be updated
    }