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swift - 试图获取 2 个视图之一的 frame.height，它在 stackview 内同样填充

问题描述

我在垂直堆栈视图（下半部分和上半部分）中有 2 个视图。他们的约束依赖于那个stackview。我在botHalfView中有一个水平的stackview（containerStackView3）。它的约束前导、尾随和高度依赖于 botHalfView。在调试窗口中，我还可以在控制台上看到 bothalfview.frame.height=0 的高度，我将其添加为水平堆栈视图的约束。因此，bothalfview 内的 Horizo​​ntalstackview 没有显示任何维度。我应该将水平堆栈视图的高度分配给哪个约束？或任何其他解决方案？

       let containerStackView3 = UIStackView()
        containerStackView3.translatesAutoresizingMaskIntoConstraints = false
        containerStackView3.axis = .vertical
        containerStackView3.distribution = .fillEqually
        containerStackView3.spacing = 1
 //adding views
        containerStackView1.addArrangedSubview(botHalfView2)
        botHalfView2.addSubview(containerStackView3)

//constraints bothalfview 
        botHalfView2.bottomAnchor.constraint(equalTo: 
        containerStackView1.bottomAnchor, constant: 0).isActive = true
        botHalfView2.leadingAnchor.constraint(equalTo: 
        containerStackView1.leadingAnchor, constant: 0).isActive = true
        botHalfView2.trailingAnchor.constraint(equalTo: 
        containerStackView1.trailingAnchor, constant: 0).isActive = true

// Constraints of the stack view inside the bothalfview
        containerStackView3.leadingAnchor.constraint(equalTo: 
        botHalfView2.leadingAnchor, constant: 0).isActive = true
        containerStackView3.trailingAnchor.constraint(equalTo: 
        botHalfView2.trailingAnchor, constant: 0).isActive = true
        containerStackView3.bottomAnchor.constraint(equalTo: 
        botHalfView2.bottomAnchor, constant: 0).isActive = true

  containerStackView3.heightAnchor.constraint(equalToConstant:botHalfView2.frame.height).isActive = true

标签： swiftautolayoutuistackview

解决方案

如果您需要与 bot half 相同的容器高度，请执行此操作 //bothalfview 内的堆栈视图的约束

    containerStackView3.leadingAnchor.constraint(equalTo: 
    botHalfView2.leadingAnchor, constant: 0).isActive = true
    containerStackView3.trailingAnchor.constraint(equalTo: 
    botHalfView2.trailingAnchor, constant: 0).isActive = true
    containerStackView3.bottomAnchor.constraint(equalTo: 
    botHalfView2.bottomAnchor, constant: 0).isActive = true
    containerStackView3.topAnchor(equalTo: 
    botHalfView2.topAnchor, constant: 0).isActive = true

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