Equal widths / heights with parent (root) view?

Question

I'm trying to add constraint in Storyboard to an UIImageView to it's superview, equal widths or heights but it's disabled.

I tried selecting both the view and the superview, then the add constraints button at the bottom right (mentioned constraints appear disabled), I tried dragging from view to the superview (mentioned constraints aren't listed).

I tried removing all the constrants related to my view. Didn't make a difference.

I'm using a xib, of a custom view. The parent view is also the root view. XCode 6.2 beta. Using size class Any/Any.

Any idea? Thanks.

Answer 1

For making UIView height/Width equals to super View.
Here's what you need to do.

You can set leading,top,tailing and bottom constraint by right clicking to View and select superview. After setting Top and bottom constraints as i've set in previous image. You need to update constraints to '0' as it might have top and leading space not equal to '0'. You can select those constraints and changes constant to '0'. You can also set constraints from pin to View as i've set for leading and tailing you can also set top and bottom option in similar way.

EDIT:
If you want to set width and height equally then you need to select both the view and set it's equal height and equal width. As I've set them in below image.

Result:
Below two images shows how you can changes width/ height using multiplier as you need to set constant to 0.9. as from storyboard or xib you cannot set constant in float. So you need to set multiplier.
First Image I've set multiplier in ratio.
Second Image I've set multiplier to 0.9

If you still face any queries please let me know. Hope this will help you solve your problem.