How do I get rid of -16 when doing horizontal layout to the edge of a supervisor in Xcode 6?

Question

When you try to expand the view to the edge of your superview in Xcode 6 storyboards, the generated constraint has a constant of -16. Why is this, and how can I return it to 0?

Answer 1

The value -16 is due to the fact that the restriction is set to Superview.trailing/leading Margin , and not to the edge of the supervisor. You can fix this by selecting the restriction and in the information in the upper right corner select the drop-down list for the viewview element and switch relative to margin to off.