[DEPRECEATED] Since iOS13 this is build-in feature

Simple Interactive Transitions using UIViewPropertyAnimator

Since iOS10 UIViewPropertyAnimator gives us an amazing tool to make UIView animations interactive. this project is simple experiment, feel free to extend and customize - it is very simple!

1. Copy InteractiveDismissing class to your project
2. Conform ypour modal viewciontroller to the InteractiveDismissing protocol

var animator: UIViewPropertyAnimator?

3. Add UIPanGestureRecognizer to your view

let panGesture = UIPanGestureRecognizer(target: self, action: #selector(ModalViewController.didTrackPanGesture))
view.addGestureRecognizer(panGesture)

5. In your gesture handler simply call:

dismissInteractively(with: sender) {
	self.dismiss(animated: false, completion: nil)
}

6. Done.