I have the following, simple layout: just a scroll view, with some views in it (please excuse the preview screenshot, since I’m using XIBs, there is no way to zoom out):
Here is my view hierarchy + constraints (the vertical constraints are all set up, throughout the view):
My problem with this case is that I get the following error in Interface Builder:
I’ve read up on the issue, I’ve found that I would need to add my scroll view as a subview to a simple view to silence this warning, but couldn’t make it work (the view didn’t scroll for some reason).
I think I understand the error here: the scroll view doesn’t know, how far it can scroll horizontally, but I’ve found no way to specify this in IB (instead of setting it to a concrete value – which I don’t want).
The problem is even more obvious, when I try to add another view to my hiearachy, and constrain its leading, trailing, and bottom edges to the scroll view:
The view just can’t figure out its width, thus the messed up scrolling.
My question is the following: is there a good way to get rid of this ambiguity? In Storyboards, you can just add equal height/width constraints to the root view, but this is not an option with XIBs.