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Say I need to have a view which has leading and trailing spacings, on iPhone SE the spacings should be 16, on larger phones I can have 32 as spacing, however in portrait mode the horizontal size class is always Compact, which means I can't apply different spacings for different size classes.

Then I thought about having High priority constraints instead of Required, and make the intrinsic content size of the view to be, say, 288, so on iPhone SE, the spacings have to be 16 and 16 (ie. 16 + 288 + 16 = 32), but on larger phones it can be 32. Haven't tried this but can someone point me the correct direction of solving this problem?

Thanks!

Edit: The view is actually a UILabel, and I don't want to give it a hardcoded width constraint.

Heuristic
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    In such type of Cases you need to Set temparary Height and Width (Like , Height and width when you apply Leading and Trialing) and then You have to give Aspect Ratio. to Your view so, It will Increase and Dicrease Size According to your Super view. Please check this , Please check this ans , https://stackoverflow.com/a/36702170/4910767 .. Moreover Another but tedious way is you need to Take IBOutlet of Leading and Trialing Constrain and Check Condition If it is iphone 5s or 6s or etc and Update Constrain Constant According to your Requirement. – Badal Shah Sep 14 '17 at 03:54

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I solve these issues more generally by using a constraint multiplier. It may not be exactly 16/32 but you can get a similar effect.

You can set hard limits like required min 16, required max 32 and then set another a lower priority constraint of parent width * someMultiplier

trapper
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