Added reverse animation

Transition Delegate/AnimatedTransitioning.h

@@ -3,13 +3,14 @@
 //  CustomTransitionExample
 //
 //  Created by Blanche Faur on 10/24/13.
+//  Updated by Anthony Detamore on 9/03/14.
 //  Copyright (c) 2013 Blanche Faur. All rights reserved.
 //
 
 #import <Foundation/Foundation.h>
 
 @interface AnimatedTransitioning : NSObject <UIViewControllerAnimatedTransitioning>
 
-@property (nonatomic, assign) BOOL isPresenting;
+@property (nonatomic, assign) BOOL reverse;
 
 @end

Transition Delegate/AnimatedTransitioning.m

@@ -3,12 +3,11 @@
 //  CustomTransitionExample
 //
 //  Created by Blanche Faur on 10/24/13.
+//  Updated by Anthony Detamore on 9/03/14
 //  Copyright (c) 2013 Blanche Faur. All rights reserved.
 //
 
 #import "AnimatedTransitioning.h"
-#import "MainViewController.h"
-#import "SecondViewController.h"
 
 @implementation AnimatedTransitioning
 
@@ -20,26 +19,49 @@ - (NSTimeInterval)transitionDuration:(id <UIViewControllerContextTransitioning>)
     return 0.25f;
 }
 
-- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext {
+- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext
+{
+    UIViewController* toVC = (UIViewController*)[transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
+    UIViewController* fromVC = (UIViewController *)[transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
 
-    UIView *inView = [transitionContext containerView];
-    SecondViewController *toVC = (SecondViewController *)[transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
-    MainViewController *fromVC = (MainViewController *)[transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
+    if(self.reverse) {
+        [self executeReverseAnimation:transitionContext fromVC:fromVC toVC:toVC];
+    } else {
+        [self executeForwardAnimation:transitionContext fromVC:fromVC toVC:toVC];
+    }
 
-    [inView addSubview:toVC.view];
+}
+
+-(void)executeForwardAnimation:(id<UIViewControllerContextTransitioning>)transitionContext fromVC:(UIViewController *)fromVC toVC:(UIViewController *)toVC
+{
+    [[transitionContext containerView] addSubview:toVC.view];
 
     CGRect screenRect = [[UIScreen mainScreen] bounds];
     [toVC.view setFrame:CGRectMake(0, screenRect.size.height, fromVC.view.frame.size.width, fromVC.view.frame.size.height)];
 
     [UIView animateWithDuration:0.25f
                      animations:^{
-
                          [toVC.view setFrame:CGRectMake(0, 0, fromVC.view.frame.size.width, fromVC.view.frame.size.height)];
                      }
                      completion:^(BOOL finished) {
                          [transitionContext completeTransition:YES];
                      }];
 }
 
+-(void)executeReverseAnimation:(id<UIViewControllerContextTransitioning>)transitionContext fromVC:(UIViewController *)fromVC toVC:(UIViewController *)toVC
+{
+    [[transitionContext containerView] insertSubview:toVC.view belowSubview:fromVC.view];
+
+    CGRect screenRect = [[UIScreen mainScreen] bounds];
+
+    [UIView animateWithDuration:0.25f
+                     animations:^{
+                         [fromVC.view setFrame:CGRectMake(0, screenRect.size.height, fromVC.view.frame.size.width, fromVC.view.frame.size.height)];
+                     }
+                     completion:^(BOOL finished) {
+                         [transitionContext completeTransition:YES];
+                     }];
+}
+
 
 @end

Transition Delegate/TransitionDelegate.m

@@ -3,6 +3,7 @@
 //  CustomTransitionExample
 //
 //  Created by Blanche Faur on 10/24/13.
+//  Updated by Anthony Detamore on 9/03/14.
 //  Copyright (c) 2013 Blanche Faur. All rights reserved.
 //
 
@@ -17,17 +18,15 @@ @implementation TransitionDelegate
 //===================================================================
 
 - (id <UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source {
-    AnimatedTransitioning *controller = [[AnimatedTransitioning alloc]init];
-    controller.isPresenting = YES;
+    AnimatedTransitioning *controller = [[AnimatedTransitioning alloc] init];
+    [controller setReverse:NO];
     return controller;
 }
 
 - (id <UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed {
-//I will fix it later.
-//    AnimatedTransitioning *controller = [[AnimatedTransitioning alloc]init];
-//    controller.isPresenting = NO;
-//    return controller;
-    return nil;
+    AnimatedTransitioning *controller = [[AnimatedTransitioning alloc] init];
+    [controller setReverse:YES];
+    return controller;
 }
 
 - (id <UIViewControllerInteractiveTransitioning>)interactionControllerForPresentation:(id <UIViewControllerAnimatedTransitioning>)animator {