SWIFT: Fade when changing UIImageView's image

app.swift

let toImage = UIImage(named:"image.png")
UIView.transitionWithView(self.imageView,
                          duration:5,
                          options: .TransitionCrossDissolve,
                          animations: { self.imageView.image = toImage },
                          completion: nil)

great and easy solution, thank you!

Very nice , but it should get an upgrade for swift3

Swift 3:

let toImage = UIImage(named:"image.png")
UIView.transition(with: self.imageView,
                          duration:5,
                          options: .transitionCrossDissolve,
                          animations: { self.imageView.image = toImage },
                          completion: nil)

Thanks, it works perfectly!