How to animate a UIView with constraints in Swift?

What you can do is to add the following code in your viewDidAppear method. You firstly make a IBOutlet property of your view’s center Y constraint, and then change its constant value.

self.centerYConstraint.constant = 500.0
self.view.layoutIfNeeded()

UIView.animateWithDuration(Double(0.5), animations: {
        self.centerYConstraint.constant = 0
        self.view.layoutIfNeeded()
    })