将stackview中的动态元素嵌入到scrollview中的一种简单方法。在XIB中，在UIScrollView中添加一个UIStackView，并添加stackview适合scrollview的约束(top, bottom, lead, trail)，并添加一个约束来匹配它们之间的水平中心。但是将最后一个约束标记为“在构建时移除”。它使XIB高兴，避免错误。

水平滚动示例:

然后:

然后在你的代码中，像这样在你的stackview中添加按钮这样的元素:

array.forEach { text in
     let button = ShadowButton(frame: .zero)
     button.setTitle(text, for: .normal)
     myStackView.addArrangedSubview(button)
     button.heightAnchor.constraint(equalToConstant: 40).isActive = true
     button.widthAnchor.constraint(equalToConstant: 80).isActive = true
}

这里投票最多的答案中的约束条件对我来说是有效的，我已经将在我的故事板中创建的约束条件的图像粘贴在下面。

我确实提到了两个问题，但其他人应该注意:

After adding constraints similar to those in in the accepted answer, I'd get the red autolayout error Need constraints for: X position or width. This was solved by adding a UILabel as a subview of the stack view. I'm adding the subviews programmatically, so I originally had no subviews on the storyboard. To get rid of the autolayout errors, add a subview to the storyboard, then remove it on load before adding your real subviews and constraints. I originally attempted to add UIButtons to the UIStackView. The buttons and views would load, but the scroll view would not scroll. This was solved by adding UILabels to the Stack View instead of buttons. Using the same constraints, this view hierarchy with the UILabels scrolls but the UIButtons does not. I'm confused by this issue, as the UIButtons do seem to have an IntrinsicContentSize (used by the Stack View). If anyone knows why the buttons don't work, I'd love to know why.

下面是我的视图层次结构和约束，供参考:

正如Eik所说，UIStackView和UIScrollView很好地结合在一起。

关键是UIStackView处理不同内容的可变高度/宽度，然后UIScrollView做它的工作很好地滚动/反弹内容:

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    scrollView.contentSize = CGSize(width: stackView.frame.width, height: stackView.frame.height)       
}

如果你有一个约束，使堆栈视图垂直居中在滚动视图内，只需删除它。

苹果的自动布局指南包括了一个关于使用滚动视图的完整部分。一些相关片段:

Pin the content view’s top, bottom, leading, and trailing edges to the scroll view’s corresponding edges. The content view now defines the scroll view’s content area. (Optional) To disable horizontal scrolling, set the content view’s width equal to the scroll view’s width. The content view now fills the scroll view horizontally. (Optional) To disable vertical scrolling, set the content view’s height equal to the scroll view’s height. The content view now fills the scroll view horizontally.

此外:

你的布局必须完全定义内容视图的大小(除了 . ...当内容视图比滚动视图高时，滚动视图允许垂直滚动。当内容视图比滚动视图宽时，滚动视图启用水平滚动。

To summarize, the scroll view's content view (in this case, a stack view) must be pinned to its edges and have its width and/or height otherwise constrained. That means that the contents of the stack view must be constrained (directly or indirectly) in the direction(s) in which scrolling is desired, which might mean adding a height constraint to each view inside a vertically scrolling stack view, for example. The following is an example of how to allow for vertical scrolling of a scroll view containing a stack view:

// Pin the edges of the stack view to the edges of the scroll view that contains it
stackView.topAnchor.constraint(equalTo: scrollView.topAnchor).isActive = true
stackView.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor).isActive = true
stackView.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor).isActive = true
stackView.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor).isActive = true

// Set the width of the stack view to the width of the scroll view for vertical scrolling
stackView.widthAnchor.constraint(equalTo: scrollView.widthAnchor).isActive = true

为macOS Catalyst添加了一些新的视角。由于macOS应用程序支持窗口大小调整，你的UIStackView可能会从一个不可滚动的状态转换为一个可滚动的状态，反之亦然。这里有两件微妙的事情:

UIStackView被设计成适合它所能适应的所有区域。 在过渡期间，UIScrollView将尝试调整其边界大小，以考虑导航栏(或macOS应用程序中的工具栏)下新获得/丢失的区域。

不幸的是，这会造成一个无限循环。我不是非常熟悉UIScrollView和它的adjustdcontentinset，但从我的日志在其layoutSubviews方法，我看到以下行为:

一个人把窗户放大了。 UIScrollView试图缩小它的边界(因为不需要工具栏下面的区域)。 UIStackView。 不知何故UIScrollView不满意，决定恢复到更大的边界。这对我来说感觉很奇怪，因为我从日志中看到的是UIScrollView.bounds.height == UIStackView.bounds.height。 UIStackView。 然后循环到步骤2。

在我看来，有两个步骤可以解决这个问题:

UIStackView一致。top到UIScrollView.topMargin。 设置contentInsetAdjustmentBehavior为。never。

这里我关注的是一个垂直增长的UIStackView的垂直可滚动视图。对于水平对，相应更改代码。

希望它能在未来帮助到任何人。在网上找不到任何人提到这一点，我花了很长时间才弄清楚发生了什么。