JKHImageZoomTransition is a simple Swift 2.2 framework that allows you to add Apple-esque view controller transitions whether its presented within a UINavigationController stack or presented modally.

See the example below:

You can quickly start using JKHImageZoomTransition by adding the line below to your project's Podfile

pod "JKHImageZoomTransition"

The source is contained inside the Pod/Classes folder. Simply drag these classes into your project's directory.

Your source and destination view controllers need to implement this protocol to facilitate the transition. The protocol is as follows:

optional func transitionFromImageView() -> UIImageView
optional func transitionToImageView() -> UIImageView
optional func transitionDidFinish(completed: Bool, finalImage: UIImage)

transitionFromImageView is called to fetch the UIImageView from the source view controller

transitionToImageView is called to fetch the UIImageView from the destination view controller

transitionDidFinish is called when the view controller transition ends on the destination view controller

To use custom view controller transitions inside a UINavigationController as opposed to the standard push and pull transitions, you must first set the navigation controller delegate in your UINavigationController. JKHNavigationControllerDelegate is conveniently provided to override the standard transitions.

To use custom view controller transitions modally you must:

1. Set the transitioningDelegate property in your "from" view controller to self.

2. Implement the UIViewControllerTransitioningDelegate protocol in your "from" view controller to specify which animation controller to use. (Please see JKHCorgiCollectionViewController.swift as an example)

3. You'll want to implement the following methods: - animationControllerForPresentedController - animationControllerForPresentedController

4. Return a new instance of the JKHImageZoomAnimationController with your desired parameters:

   Note: JKHImageZoomType is an enum that specifies whether you want to use a zoom in or zoom out transition.

• iOS 8.0 or higher

• First pre-release.

Joon Ki Hong [email protected]

JKHImageZoomTransition is available under the MIT license.