Xcode不了解这些约束，并且无法按我想要的方式工作

Question

So I can seem to get these constraints to work properly. I did something on one of my ViewControllers and it works perfect. I just don't remember how I did it.

So when I update constraints on the new ViewController , then I get warnings stating Frame for "object" will be different at run time. Then yellow dashed outlines of the selected object appear lower in the ViewController. Then if I click Editor -> Update Frames , it shifts everything down to where the yellow dashed boxes are. I don't wan't this to happen. I want my objects in the ViewController to go where I place them.

Why does it place the yellow dashed box lower than where I actually have it placed?

This is with one item selected. See how the yellow dashed box is lower than I want it. Now when I was setting this up I have the UIScrollView to fit the whole canvas. That is how the other ViewController is set up.

Answer 1

Ok so update. I got to playing around and I found that the navigation bar had a lot to do with that. I deleted the segue that lead into the ViewController and set on the constraints where I wanted everything. Then I re-added the segue and everything was where I wanted it. I don't know if this is the correct way or the best way to achieve this.

Also I got to playing around more and found that I didn't have to delete the segue I could just put everything behind the navigation bar, add constraints then update the frame. Again I am not sure if this the proper way to do it but it did work the way I needed it to work.