Width and Horizontal Position Are Ambiguous

Question

it seems I have created a simple Image view with the following constraints:

Align Center X to: Superview

Align Center Y to: Superview

Top Space to: Top Layout Guide

Bottom Space to: Bottom Layout Guide

And I have the Width and Horizontal Position Are Ambiguous message. I am trying to correct it, but I am not sure about what is happening in the first place.

Do you have an idea?

Answer 1

You need to add the same constraint for left and right as you did for top and bottom.

Or set fixed width.

Answer 2

Remove Top Space to: Top Layout Guide and Bottom Space to: Bottom Layout Guide constraints, Set Image's Width and Height instead or (Width + Aspect ratio). Because every view needs x,y, height, width to render itself.

So You've already set X and Y using Align Center X to: Superview and Align Center Y to: Superview. So it needs specific width and height now.