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https://github.com/naoyashiga/RPModalGestureTransition

You can dismiss modal by using gesture :point_up_2: :iphone:
https://github.com/naoyashiga/RPModalGestureTransition

ios-animation

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You can dismiss modal by using gesture :point_up_2: :iphone:

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# RPModalGestureTransition

![](https://raw.githubusercontent.com/naoyashiga/RPModalGestureTransition/master/demo.gif)  

You can dismiss modal by using gesture.



# Usage

## 1.Define animation

You define animator class inherits UIViewControllerAnimatedTransitioning. I made this in [TransitionAnimator.swift](https://github.com/naoyashiga/RPModalGestureTransition/blob/master/RPModalGestureTransition/TransitionAnimator.swift).



## 2.Set UIViewControllerTransitioningDelegate to modal

```swift

import UIKit



extension ModalViewController: UIViewControllerTransitioningDelegate {



    func presentationControllerForPresentedViewController(presented: UIViewController, presentingViewController presenting: UIViewController, sourceViewController source: UIViewController) -> UIPresentationController? {



        return BackgroundPresentationController(presentedViewController: presented, presentingViewController: presenting)

    }



    func animationControllerForPresentedController(presented: UIViewController, presentingController presenting: UIViewController, sourceController source: UIViewController) -> UIViewControllerAnimatedTransitioning? {



        return TransitionAnimator(isPresenting: true)

    }



    func animationControllerForDismissedController(dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {



        return TransitionAnimator(isPresenting: false)

    }



    func interactionControllerForPresentation(animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {

        return nil

    }



    func interactionControllerForDismissal(animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {

        guard let percentInteractiveTransition = percentInteractiveTransition else {

            return nil

        }

        

        return percentInteractiveTransition.isInteractiveDissmalTransition ? percentInteractiveTransition : nil

    }

}

```



## 3.Set InteractiveTransition to modal

Class InteractiveTransition inherits UIPercentDrivenInteractiveTransition.

```swift

class ModalViewController: UIViewController {

    

    var percentInteractiveTransition: InteractiveTransition?

    

    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: NSBundle?) {

        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)

        

        modalPresentationStyle = .Custom

        transitioningDelegate = self

        

        percentInteractiveTransition = InteractiveTransition(attachedViewController: self)

    }

```



## 4.Define interactive animation

You have to define how animation change with gesture. You check [InteractiveTransition.swift](https://github.com/naoyashiga/RPModalGestureTransition/blob/master/RPModalGestureTransition/InteractiveTransition.swift).