Xcode视图层次结构调试视图中的灰色约束是什么？ [英] What are gray constraints in Xcode view hierarchy debug view?

问题描述

我知道固体是什么：我自己创造了它们。那些灰色的呢？隐含的，可能是通过尺寸适合？灰色高度与实心高度冲突。灰色的来自哪里？

I know what the solid ones are: I created them myself. What about the gray ones? Implicit, maybe via size-to-fit? The gray height conflicts with the solid height. Where do the gray ones come from?

推荐答案

您正在检查对象，例如具有内在内容大小的标签。内在内容大小会产生高度和宽度限制;这就是 的内在内容大小。灰色约束向您显示内在内容大小生成的约束。如果你只是看，你可以看：他们说内容大小！

You are inspecting an object such as a label that has an intrinsic content size. The intrinsic content size generates height and width constraints; that's what intrinsic content size is. The constraints in gray are showing you the constraints that the intrinsic content size generates. If you just look at them, you can see that: they say "content size"!

他们是灰色，因为它们被显式约束覆盖（它们的优先级较低）。但他们仍然在那里，如果你没有压倒他们，他们会生效（他们不会是灰色的）。

They are in gray because they are overridden by your explicit constraints (they have a lower priority). But they are still there, and if you were not overriding them, they would take effect (and they would not be gray).

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