Xcode 7 and Xcode 8 Constraint Difference Issue

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Created Feb ’17

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I have upgraded the project I developed with Xcode 7 to Xcode 8.I also did not use Auto Layout because the application works on a single device, and compared it to a problem in a library I use.Now my question is: This library was acting on constraints.With Xcode 7, the old project was added as a default constraint, but I see that Xcode 8 does not have a default constraint. I got this in the following way

With Xcode 7 I get the following result when I write console. po button.constraints

-[0] : NSContentSizeLayoutConstraint:0x7f93916b1210 H:[UIButton:0x7f9391615b20'Button'(46)] Hug:250 CompressionResistance:750 
-[1] : NSContentSizeLayoutConstraint:0x7f93916141b0 V:[UIButton:0x7f9391615b20'Button'(30)] Hug:250 CompressionResistance:750

With Xcode 8 I get the following result when I write console. po button.constraints

0 elements

As I said, I did not add the related button constraint in both projects, but by default in Xcode 7 there are 2 NSContentSizeLayoutConstraints visible. In Xcode 8, no NSContentSizeLayoutConstraint appears

Do you know why and how to solve it?

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Answer 1

Claude31 OP

Mar ’17

What do you want to solve exactly ?

Does the absence of constraint lead to a display problem ?

- If no, leave it as it is ;

- if yes,you can add the constraints to the object in IB if you want.

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