Syncing UIView animations - Framework implementation

layoutViewsExample.swift

let animationDuration: TimeInterval? = subviewsInLayoutOrder
  .flatMap({ $0.layer.resolveAnimationDuration }).first ?? duration

if let duration = animationDuration {
  let options: UIViewAnimationOptions = [.allowUserInteraction, .beginFromCurrentState]
  UIView.animate(withDuration: duration, delay: 0.0, options: options, animations: {
    self.runLayoutSubviewsAlgorithm()
  })
} else {
  runLayoutSubviewsAlgorithm()
}