Code Challenge Changes

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 */; };
+		2E6A393D18E22BC400005199 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = 2E6A393A18E21BFB00005199 /* QuartzCore.framework */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -50,13 +51,16 @@
 		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>"; };
+		2E6A393A18E21BFB00005199 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
+		2E6A393C18E22A6E00005199 /* Constants.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = Constants.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
 		001809B2171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				2E6A393D18E22BC400005199 /* QuartzCore.framework in Frameworks */,
 				001809B9171C637E002D3E93 /* UIKit.framework in Frameworks */,
 				001809BB171C637E002D3E93 /* Foundation.framework in Frameworks */,
 				001809BD171C637E002D3E93 /* CoreGraphics.framework in Frameworks */,
@@ -86,6 +90,7 @@
 		001809B7171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				2E6A393A18E21BFB00005199 /* QuartzCore.framework */,
 				001809B8171C637E002D3E93 /* UIKit.framework */,
 				001809BA171C637E002D3E93 /* Foundation.framework */,
 				001809BC171C637E002D3E93 /* CoreGraphics.framework */,
@@ -114,6 +119,7 @@
 				001809CA171C637E002D3E93 /* Default.png */,
 				001809CC171C637E002D3E93 /* Default@2x.png */,
 				001809CE171C637E002D3E93 /* Default-568h@2x.png */,
+				2E6A393C18E22A6E00005199 /* Constants.h */,
 			);
 			name = "Supporting Files";
 			sourceTree = "<group>";
@@ -356,6 +362,7 @@
 				001809D4171C637E002D3E93 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

ChangingBackground/Constants.h

@@ -0,0 +1,16 @@
+//
+//  Constants.h
+//  ChangingBackground
+//
+//  Created by Esteban Brenes on 3/25/14.
+//  Copyright (c) 2014 Ora Interactive. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+#define BLUE_BACKGROUND @"blue.png"
+#define GREEN_BACKGROUND @"green.png"
+
+@interface Constantes : NSObject
+
+@end

ChangingBackground/FirstViewController.h

@@ -9,7 +9,10 @@
 #import <UIKit/UIKit.h>
 
 @interface FirstViewController : UIViewController
-
+{
+    bool firstTime;   
+}
+@property (weak, nonatomic) IBOutlet UIImageView *imgViewBackground;
 - (IBAction)goForwardButtonPressed;
 
 @end

ChangingBackground/FirstViewController.m

@@ -8,13 +8,59 @@
 
 #import "FirstViewController.h"
 #import "SecondViewController.h"
+#import "Constants.h"
 
 @interface FirstViewController ()
 
 @end
 
 @implementation FirstViewController
 
+-(void)viewDidLoad
+{
+    [super viewDidLoad];
+    firstTime = YES;
+   //  self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:BLUE_BACKGROUND]];
+}
+
+
+//***************************************************************
+// used a fixed image here because its only 2 views but if there are more
+//views with different backgorunds then i would have needed to pass some kind of
+//parameter to identify the initial background to do the fade from
+//***************************************************************
+-(void)viewWillAppear:(BOOL)animated
+{
+    if (!firstTime) {
+       // self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:GREEN_BACKGROUND]];
+        [[self imgViewBackground] setImage:[UIImage imageNamed:GREEN_BACKGROUND]];
+    }
+
+}
+- (void)viewDidAppear:(BOOL)animated
+{
+    if (firstTime) {
+        firstTime = !firstTime;
+    }
+    else
+    {
+        //***************************************************************
+        //Had to switch from background color to uiimageview because the
+        //provided images wouldnt fit the screen on IOS7 or landscape
+        //***************************************************************
+
+      /*  self.view.backgroundColor = [[UIColor alloc] initWithPatternImage:[UIImage imageNamed:BLUE_BACKGROUND]];
+        CATransition *transiton = [[CATransition alloc] init];
+        transiton.duration = 2.0;
+        [self.view.layer addAnimation:transiton forKey:@"Animation"];*/
+
+        [[self imgViewBackground] setImage:[UIImage imageNamed:BLUE_BACKGROUND]];
+        CATransition *transiton = [[CATransition alloc] init];
+        transiton.duration = 2.0;
+        [self.imgViewBackground.layer addAnimation:transiton forKey:@"Animation"];
+    }
+}
+
 - (IBAction)goForwardButtonPressed {
     SecondViewController *secondViewController = SecondViewController.new;
     [self.navigationController pushViewController:secondViewController animated:YES];