Transition between view controllers using pre-built custom transitions

• Drag and drop the animation files into your project (found in the 'Transition Animations' folder).
• In the view controller doing the presenting, create an instance of CHTransitionAnimationController. Make sure this class contains the appropriate imports (i.e. import "CHTransitionAnimationController.h").
• In your current View Controller, you must adhere to the UIViewControllerTransitioningDelegate. Then set your current view controller as the delegate of the view controller your are presenting, like so:

MyNextViewController *viewController = [[MyNextViewController alloc] init]; //instance of your next view controller
viewController.transitioningDelegate = self;  //set transitioning delegate
[self presentViewController:viewController animated:YES completion:nil];  //present next view controller

• Implement the UIViewControllerTransitioningDelegate methods. Set the animationType of the CHTransitionAnimationController and then return your CHTransitionAnimationController instance in the appropriate delegate methods, like so:

-(id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed
{
	CHTransitionAnimationController *animationController = [CHTransitionAnimationController new];
  	animationController.animationType = CHTransitionAnimationTypeGrow;
  	animationController.animationDuration = 0.5; //optional - defaults to 0.25
	return animationController;
}

- (id <UIViewControllerInteractiveTransitioning>) interactionControllerForDismissal:(id<UIViewControllerAnimatedTransitioning>)animator
{
	CHTransitionAnimationController *animationController = [CHTransitionAnimationController new];
	 animationController.animationType = CHTransitionAnimationTypeShrink;
  	animationController.animationDuration = 0.5; //optional - defaults to 0.25
	return animationController;
}

NOTE: The current animation types include:

• CHTransitionAnimationTypeGrow
• CHTransitionAnimationTypeShrink
• CHTransitionAnimationTypeFade
• CHTransitionAnimationTypeGrowWithRotation
• CHTransitionAnimationTypeShrinkWithRotation
• CHTransitionAnimationTypeSlideInFromTop
• CHTransitionAnimationTypeSlideInFromBottom
• CHTransitionAnimationTypeSlideOutToLeft
• CHTransitionAnimationTypeSlideOutToRight
• CHTransitionAnimationTypeSlideOutToTop
• CHTransitionAnimationTypeSlideOutToBottom

These will work for either presenting or dismissing a view controller. Other transition types will come as I continue to work on this project. If you have any animations you'd like to see, let me know!

####Optional Steps: You can set the animationDuration property of the CHTransitionAnimationController instance, but you don't have to. It will default to 0.25. The animationDuration property is just that, the duration for which the animation will take to complete.