CODEWITHSUNDEEP
iosstoryboardautolayoutconstraints
justColbs
justColbs

Reputation: 1872

No Constraints found in viewDidLayoutSubviews - AutoLayout

Happy Thanksgiving if you celebrate it!

I have a UIImageView on storyboard, setup with 4 constraints. The center x constraint has an identifier set (via storyboard), "imageViewTwoCenterX".

I'm trying to find that constraint with the identifier.

PROBLEM: The code below returns 0 for the constraints array count, and never finds the constraint with the identifier.

Am I doing something wrong? Wrong practice? All help is appreciated!

I use this code:

override func viewDidLayoutSubviews() {
    print("Constraints Count: \(imageViewTwo.constraints.count)")
    for constraint  in imageViewTwo.constraints {
        if constraint.identifier == "imageViewTwoCenterX" {
            print("Found it!")
        }
    }

}

Upvotes: 0

Views: 82

Answers (1)

Tamás Zahola
Tamás Zahola

Reputation: 9311

For constraints other than width/height constraints, IB adds them to the view's superview. So you won't find them among the image view's constraints. Try listing its superview's constraints instead.

Upvotes: 1

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