complete

ChangingBackground.xcodeproj/project.pbxproj

@@ -24,6 +24,7 @@
 		001809EC171C6764002D3E93 /* blue@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 001809E8171C6764002D3E93 /* blue@2x.png */; };
 		001809ED171C6764002D3E93 /* green.png in Resources */ = {isa = PBXBuildFile; fileRef = 001809E9171C6764002D3E93 /* green.png */; };
 		001809EE171C6764002D3E93 /* green@2x.png in Resources */ = {isa = PBXBuildFile; fileRef = 001809EA171C6764002D3E93 /* green@2x.png */; };
+		915CD0471830BA5D00342C1A /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 915CD0461830BA5D00342C1A /* QuartzCore.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -50,13 +51,15 @@
 		001809E8171C6764002D3E93 /* blue@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "blue@2x.png"; sourceTree = "<group>"; };
 		001809E9171C6764002D3E93 /* green.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = green.png; sourceTree = "<group>"; };
 		001809EA171C6764002D3E93 /* green@2x.png */ = {isa = PBXFileReference; lastKnownFileType = image.png; path = "green@2x.png"; sourceTree = "<group>"; };
+		915CD0461830BA5D00342C1A /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
 		001809B2171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				915CD0471830BA5D00342C1A /* QuartzCore.framework in Frameworks */,
 				001809B9171C637E002D3E93 /* UIKit.framework in Frameworks */,
 				001809BB171C637E002D3E93 /* Foundation.framework in Frameworks */,
 				001809BD171C637E002D3E93 /* CoreGraphics.framework in Frameworks */,
@@ -86,6 +89,7 @@
 		001809B7171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				915CD0461830BA5D00342C1A /* QuartzCore.framework */,
 				001809B8171C637E002D3E93 /* UIKit.framework */,
 				001809BA171C637E002D3E93 /* Foundation.framework */,
 				001809BC171C637E002D3E93 /* CoreGraphics.framework */,
@@ -321,6 +325,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "ChangingBackground/ChangingBackground-Prefix.pch";
 				INFOPLIST_FILE = "ChangingBackground/ChangingBackground-Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -332,6 +337,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "ChangingBackground/ChangingBackground-Prefix.pch";
 				INFOPLIST_FILE = "ChangingBackground/ChangingBackground-Info.plist";
+				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -356,6 +362,7 @@
 				001809D4171C637E002D3E93 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

ChangingBackground/AppDelegate.h

@@ -9,5 +9,6 @@
 #import <UIKit/UIKit.h>
 
 @interface AppDelegate : UIResponder <UIApplicationDelegate>
+@property (nonatomic, strong) UIImageView *background;
 
 @end

ChangingBackground/AppDelegate.m

@@ -9,6 +9,7 @@
 #import "AppDelegate.h"
 #import "FirstViewController.h"
 
+
 @interface AppDelegate () {
     UIWindow *window;
 }
@@ -18,13 +19,20 @@ @interface AppDelegate () {
 @implementation AppDelegate
 
 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+
+
     window = [UIWindow.alloc initWithFrame:UIScreen.mainScreen.bounds];
+
     [window makeKeyAndVisible];
-
+
+    _background = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"blue"]];
+
+    [window addSubview:_background];
     FirstViewController *firstViewController = FirstViewController.new;
     UINavigationController *navigationController = [UINavigationController.alloc initWithRootViewController:firstViewController];
     [navigationController setNavigationBarHidden:YES];
 
+
     window.rootViewController = navigationController;
 
     return YES;

ChangingBackground/FirstViewController.h

@@ -7,9 +7,13 @@
 //
 
 #import <UIKit/UIKit.h>
+#import "AppDelegate.h"
 
 @interface FirstViewController : UIViewController
 
 - (IBAction)goForwardButtonPressed;
+@property(strong, nonatomic) AppDelegate *delegate;
+@property (weak, nonatomic) IBOutlet UIButton *goForwardButton;
+@property (weak, nonatomic) IBOutlet UILabel *homeViewControllerLabel;
 
 @end

ChangingBackground/FirstViewController.m

@@ -8,16 +8,44 @@
 
 #import "FirstViewController.h"
 #import "SecondViewController.h"
+#import "AppDelegate.h"
 
-@interface FirstViewController ()
 
-@end
 
 @implementation FirstViewController
+AppDelegate *delegate;
+
+- (void)viewDidLoad {
+    [super viewDidLoad];
+    [self setUp1stViewControllerElements];
+
+}
 
 - (IBAction)goForwardButtonPressed {
+
     SecondViewController *secondViewController = SecondViewController.new;
-    [self.navigationController pushViewController:secondViewController animated:YES];
+    CATransition* transition = [CATransition animation];
+    transition.duration = 0.5;
+    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
+    transition.type = kCATransitionPush;
+    transition.subtype = kCATransitionFromRight;
+    [self.navigationController.view.layer addAnimation:transition forKey:nil];
+    [self.navigationController pushViewController:secondViewController animated:NO];
 }
 
+- (void)setUp1stViewControllerElements {
+    _goForwardButton.layer.cornerRadius = 10.0f;
+    _goForwardButton.backgroundColor = [UIColor whiteColor];
+    self.view.backgroundColor = [UIColor clearColor];
+}
+
+- (void)viewDidAppear:(BOOL)animated {
+    delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
+
+    [UIView transitionWithView:delegate.background duration:2.0f options:UIViewAnimationOptionTransitionCrossDissolve animations:^{
+
+        delegate.background.image = [UIImage imageNamed:@"blue"];
+    } completion:^(BOOL finished) {
+    }];
+}
 @end