Autolayout: update restrictions for UICollectionViewCell not working

Question

I have a problem trying to update my UILabel restrictions for my collectible ViewCell. My prototype cell looks like this:

My goal: I need to edit the red constraint constant of the top label, depending on whether I hide or not the green label.

How did I go on?

• I added an IBoutlet to restrict the red label (the one with the red arrow):

  @IBOutlet weak var descriptionTopToPrice: NSLayoutConstraint!

• Then:

  descriptionTopToPrice.constant = 2

  self.contentView.setNeedsUpdateConstraints()

But this does not work, and the restrictions are not updated.

Did I miss something?

Answer 1

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