import UIKit import Gifu class ViewController: UIViewController { @IBOutlet weak var imageView: GIFImageView! var currentGIFName: String = "mugen" { didSet { imageView.animate(withGIFNamed: currentGIFName) } } @IBAction func toggleAnimation(_ sender: AnyObject) { if imageView.isAnimatingGIF { imageView.stopAnimatingGIF() } else { imageView.startAnimatingGIF() } } @IBAction func swapImage(_ sender: AnyObject) { switch currentGIFName { case "mugen": currentGIFName = "earth" default: currentGIFName = "mugen" } } override func viewWillDisappear(_ animated: Bool) { imageView.prepareForReuse() } override func viewDidAppear(_ animated: Bool) { imageView.animate(withGIFNamed: currentGIFName) } @IBAction func unwindToRootViewController(segue: UIStoryboardSegue) { } }