Nested UIStackViews Broken Constraints

Question

I have a complex view hierarchy, built in Interface Builder, with nested UIStackViews. I get \"unsatisfiable constraints\" notices every time I hide some of my inner stackviews.

Answer 1

Ideally we could just set the priority of the UISV-spacing constraint to a lower value, but there doesn't appear to be any way to do that. :)

I am having success setting the spacing property of the nested stack views to 0 before hiding, and restoring to the proper value after making it visible again.

I think doing this recursively on nested stack views would work. You could store the original value of the spacing property in a dictionary and restore it later.

My project only has a single level of nesting, so I am unsure if this would result in FPS problems. As long as you don't animate the changes in spacing, I don't think it would create too much of a hit.