对我来说，添加contentView并没有像建议的那样真正起作用。此外，由于添加了视图，它会产生开销(尽管我不认为这是一个大问题)。对我来说最有效的方法是关闭我的scrollView的歧义检查。一切都布置得很好，所以我认为在像我这样简单的情况下是可以的。但是请记住，如果你的scrollView的其他约束被打破，Interface-Builder将不再就此警告你。

我通过使用“解决自动布局问题”>“为所选视图添加缺失约束”来解决我的视图的这种问题

以下两个约束条件可以解决我的问题:

trailing = Stack View.trailing - 10
bottom = Stack View.bottom + 76

中: 尾随，bottom是UIScrollView的尾随，底部

见下图:内容视图以滚动视图垂直和水平集中。 你有歧义错误，总是确保从你的内容视图添加到scrollview的两个是1).按钮空间到容器。2)尾随空间到屏幕截图中突出显示的约束，

这些约束的意思是在滚动中，你可以在你的内容视图高度或宽度后滚动多少。

它可能对你有帮助。

This error took me a while to track down, initially I tried pinning the ScrollView's size but the error message clearly says "content size". I made sure everything I pinned from the top of the ScrollView was also pinned to the bottom. That way the ScrollView can calculate its content height by finding the height of all the objects & constraints. This solved the ambiguous content height, the width is pretty similar... Initially I had most things X centered in the ScrollView, but I had to also pin the objects to the side of the ScrollView. I don't like this because the iPhone6 might have a wider screen but it will remove the 'ambiguous content width' error.

对于任何视图，框架及其内容的大小是相同的，即如果你有一些内容(例如图像)的大小为200 * 800，那么它的框架也是200 * 800。

这对于scrollview的内容是不正确的。内容通常大于scrollView的帧大小。如果内容宽度相同，则只能垂直滚动。如果高度相同，则只能水平滚动。因此它是唯一需要6个约束而不是4个约束的视图。对于任何其他具有超过4个必要约束的视图都将导致冲突。

要设置你的滚动视图，它的内容和滚动的位置，你基本上需要回答三个问题:

我的身材有多大?即在任何给定时刻滚动视图应该有多大?2 .拓展例句我只想用屏幕一半的高度，所以

scrollview.frame = (x: 0, y:0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height / 2)

How much scrolling space do I need? ie How big is the content? e.g. the frame can be just 500 points of width, but then you can set an image with 7000 points, which would take quite some time to scroll horizontally. Or let it be exactly 500 points of width which then means no horizontal scrolling can happen. How much have you scrolled at the moment? Say your content's (or image) width was 7000 and the frame size is just 500. To get to the end of the image, you'd need to scroll 6500 points to the right. The 3rd part really doesn't affect the constraints. You can ignore that for now. Understanding it just helps how a scrollView works.

解决方案

基本上，如果你忽略了2个额外的约束(关于内容大小)，那么布局引擎将会因为模糊性而抱怨。它不知道内容的哪些区域被隐藏(在scrollView中不可见)，哪些区域的内容不被隐藏(在scrollView中可见)。

所以一定要为内容添加大小限制。要了解更多，请看这个答案

但有时我不添加大小限制到我的视图，它只是工作。为什么呢?

If all the contents you've added into the scrollview are constrained to the edges of the scrollview, then as the content grow the scrollview will add space to accommodate. It's just that you might be using UIViews where its intrinsicContentSize is 0 so the scrollView will still complain about ambiguity of its content. However if you've used a UILabel and it has a non-empty text, then its intrinsicContentSize is set (based on Font size and text length and line breaks, etc) so the scrollView won't complain about its ambiguity.

对我来说，添加contentView并没有像建议的那样真正起作用。此外，由于添加了视图，它会产生开销(尽管我不认为这是一个大问题)。对我来说最有效的方法是关闭我的scrollView的歧义检查。一切都布置得很好，所以我认为在像我这样简单的情况下是可以的。但是请记住，如果你的scrollView的其他约束被打破，Interface-Builder将不再就此警告你。