Sid

ChangingBackground.xcodeproj/project.pbxproj

@@ -24,6 +24,9 @@
 		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 */; };
+		D1A9332D191AD3FB00104BD3 /* BackgroundView.m in Sources */ = {isa = PBXBuildFile; fileRef = D1A9332C191AD3FB00104BD3 /* BackgroundView.m */; };
+		D1A9332F191AF7E600104BD3 /* QuartzCore.framework in Frameworks */ = {isa = PBXBuildFile; fileRef = D1A9332E191AF7E600104BD3 /* QuartzCore.framework */; };
+		D1DD5F3E191C71B300340540 /* CustomButton.m in Sources */ = {isa = PBXBuildFile; fileRef = D1DD5F3D191C71B300340540 /* CustomButton.m */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -50,13 +53,19 @@
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 		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>"; };
+		D1A9332B191AD3FB00104BD3 /* BackgroundView.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = BackgroundView.h; sourceTree = "<group>"; };
+		D1A9332C191AD3FB00104BD3 /* BackgroundView.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = BackgroundView.m; sourceTree = "<group>"; };
+		D1A9332E191AF7E600104BD3 /* QuartzCore.framework */ = {isa = PBXFileReference; lastKnownFileType = wrapper.framework; name = QuartzCore.framework; path = System/Library/Frameworks/QuartzCore.framework; sourceTree = SDKROOT; };
+		D1DD5F3C191C71B300340540 /* CustomButton.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = CustomButton.h; sourceTree = "<group>"; };
+		D1DD5F3D191C71B300340540 /* CustomButton.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = CustomButton.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
 		001809B2171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXFrameworksBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				D1A9332F191AF7E600104BD3 /* QuartzCore.framework in Frameworks */,
 				001809B9171C637E002D3E93 /* UIKit.framework in Frameworks */,
 				001809BB171C637E002D3E93 /* Foundation.framework in Frameworks */,
 				001809BD171C637E002D3E93 /* CoreGraphics.framework in Frameworks */,
@@ -86,6 +95,7 @@
 		001809B7171C637E002D3E93 /* Frameworks */ = {
 			isa = PBXGroup;
 			children = (
+				D1A9332E191AF7E600104BD3 /* QuartzCore.framework */,
 				001809B8171C637E002D3E93 /* UIKit.framework */,
 				001809BA171C637E002D3E93 /* Foundation.framework */,
 				001809BC171C637E002D3E93 /* CoreGraphics.framework */,
@@ -96,6 +106,10 @@
 		001809BE171C637E002D3E93 /* ChangingBackground */ = {
 			isa = PBXGroup;
 			children = (
+				D1A9332B191AD3FB00104BD3 /* BackgroundView.h */,
+				D1A9332C191AD3FB00104BD3 /* BackgroundView.m */,
+				D1DD5F3C191C71B300340540 /* CustomButton.h */,
+				D1DD5F3D191C71B300340540 /* CustomButton.m */,
 				001809EF171C6768002D3E93 /* BackgroundImages */,
 				001809D5171C63FC002D3E93 /* AppDelegate */,
 				001809DC171C6453002D3E93 /* ViewControllers */,
@@ -238,9 +252,11 @@
 			isa = PBXSourcesBuildPhase;
 			buildActionMask = 2147483647;
 			files = (
+				D1DD5F3E191C71B300340540 /* CustomButton.m in Sources */,
 				001809C5171C637E002D3E93 /* main.m in Sources */,
 				001809C9171C637E002D3E93 /* AppDelegate.m in Sources */,
 				001809D9171C6448002D3E93 /* FirstViewController.m in Sources */,
+				D1A9332D191AD3FB00104BD3 /* BackgroundView.m in Sources */,
 				001809E0171C64E4002D3E93 /* SecondViewController.m in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;
@@ -356,6 +372,7 @@
 				001809D4171C637E002D3E93 /* Release */,
 			);
 			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
 		};
 /* End XCConfigurationList section */
 	};

ChangingBackground/BackgroundView.h

@@ -0,0 +1,18 @@
+//
+//  BackgroundImage.h
+//  ChangingBackground
+//
+//  Created by Siddharth Sukumar on 5/7/14.
+//  Copyright (c) 2014 Ora Interactive. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface BackgroundView : UIView
+
+@property (nonatomic, strong) UIImage *backgroundImage;
+
+- (void) animatingTheForegroundImageWithImage : (UIImage *) image;
+
+
+@end

ChangingBackground/BackgroundView.m

@@ -0,0 +1,69 @@
+//
+//  BackgroundImage.m
+//  ChangingBackground
+//
+//  Created by Siddharth Sukumar on 5/7/14.
+//  Copyright (c) 2014 Ora Interactive. All rights reserved.
+//
+
+#import "BackgroundView.h"
+#import <QuartzCore/QuartzCore.h>
+
+
+@interface BackgroundView ()
+@property (strong, nonatomic) UIImageView *imageView;
+
+@end
+
+@implementation BackgroundView
+
+
+- (id)initWithCoder:(NSCoder *)aDecoder {
+
+    self = [super initWithCoder:aDecoder];
+    if (self){
+
+        NSArray *subViews = [self subviews];
+
+        id firstObject = subViews[0];
+
+        self.imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, 520)];
+
+        [self insertSubview:self.imageView belowSubview:firstObject];
+
+    }
+    return self;
+
+}
+
+
+- (void) animatingTheForegroundImageWithImage : (UIImage *) image {
+
+    self.imageView.image = image;
+
+    CABasicAnimation *theAnimation;
+
+    //within the animation we will adjust the "opacity"value of the layer
+
+    theAnimation=[CABasicAnimation animationWithKeyPath:@"opacity"];
+    theAnimation.duration=2;
+
+    //changing the opacity (1=fully visible, 0=unvisible)
+
+    theAnimation.fromValue=[NSNumber numberWithFloat:0.0];
+    theAnimation.toValue=[NSNumber numberWithFloat:1.0];
+
+    [self.imageView.layer addAnimation:theAnimation
+                                forKey:@"animateOpacity"];
+
+}
+
+- (void) drawRect:(CGRect)rect {
+
+    [super drawRect:rect];
+
+    [self.backgroundImage drawInRect:rect];
+
+}
+
+@end

ChangingBackground/CustomButton.h

@@ -0,0 +1,18 @@
+//
+//  CustomButton.h
+//  ChangingBackground
+//
+//  Created by Siddharth Sukumar on 5/8/14.
+//  Copyright (c) 2014 Ora Interactive. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface CustomButton : UIButton
+
+
+- (void) indicatingItIsTheFirstViewControler;
+- (void) indicatingItIsTheSecondViewController;
+
+
+@end

ChangingBackground/CustomButton.m

@@ -0,0 +1,92 @@
+//
+//  CustomButton.m
+//  ChangingBackground
+//
+//  Created by Siddharth Sukumar on 5/8/14.
+//  Copyright (c) 2014 Ora Interactive. All rights reserved.
+//
+
+#import "CustomButton.h"
+
+@interface CustomButton()
+
+@property  BOOL itIsTheFirstViewController;
+@property  BOOL itIsTheSecondViewController;
+
+@end
+
+@implementation CustomButton
+
+- (id)initWithFrame:(CGRect)frame
+{
+    self = [super initWithFrame:frame];
+    if (self) {
+        // Initialization code
+    }
+    return self;
+}
+
+- (void) setHighlighted:(BOOL)highlighted {
+    [super setHighlighted:highlighted];
+    [self setNeedsDisplay];
+
+
+}
+
+- (void) indicatingItIsTheFirstViewControler {
+
+    self.itIsTheFirstViewController = YES;
+    self.itIsTheSecondViewController = NO;
+
+
+}
+- (void) indicatingItIsTheSecondViewController {
+
+    self.itIsTheSecondViewController = YES;
+    self.itIsTheFirstViewController = NO;
+
+
+}
+
+
+
+
+- (void) drawRect:(CGRect)rect {
+
+    [super drawRect:rect];
+    if (self.highlighted){
+
+        // Color Declarations
+        UIColor* color2 = [UIColor colorWithRed: 0 green: 0.629 blue: 1 alpha: 1];
+
+        // Rectangle Drawing
+        UIBezierPath* rectanglePath = [UIBezierPath bezierPathWithRect: rect];
+        [color2 setFill];
+        [rectanglePath fill];
+
+
+        // Text Drawing
+        CGRect textRect = CGRectMake(64, 53, 102, 12);
+        {
+            NSString* textContent;
+
+            if (self.itIsTheFirstViewController) {
+                textContent = @"Go Forward";
+
+            } else {
+                textContent = @"Go Back";
+
+
+            }
+            NSMutableParagraphStyle* textStyle = NSMutableParagraphStyle.defaultParagraphStyle.mutableCopy;
+            textStyle.alignment = NSTextAlignmentCenter;
+
+            NSDictionary* textFontAttributes = @{NSFontAttributeName: [UIFont fontWithName: @"Arial-BoldMT" size: UIFont.systemFontSize], NSForegroundColorAttributeName: UIColor.whiteColor, NSParagraphStyleAttributeName: textStyle};
+
+            [textContent drawInRect: CGRectOffset(textRect, 0, (CGRectGetHeight(textRect) - [textContent boundingRectWithSize: textRect.size options: NSStringDrawingUsesLineFragmentOrigin attributes: textFontAttributes context: nil].size.height) / 2) withAttributes: textFontAttributes];
+
+        }
+
+    }
+}
+@end

ChangingBackground/FirstViewController.m

@@ -8,16 +8,42 @@
 
 #import "FirstViewController.h"
 #import "SecondViewController.h"
+#import "BackgroundView.h"
+#import "CustomButton.h"
 
 @interface FirstViewController ()
+@property (strong, nonatomic) IBOutlet BackgroundView *myView;
+@property (strong, nonatomic) IBOutlet CustomButton *goForwardButton;
 
 @end
 
 @implementation FirstViewController
 
+- (void)viewWillAppear:(BOOL)animated {
+
+    [super viewWillAppear:YES];
+
+    self.myView.backgroundImage = [UIImage imageNamed:@"green"];
+
+    [self.goForwardButton indicatingItIsTheFirstViewControler];
+
+    // making the corners of the button round
+
+    self.goForwardButton.layer.cornerRadius = 10.0;
+    self.goForwardButton.clipsToBounds = YES;
+    self.goForwardButton.showsTouchWhenHighlighted = YES;
+    [self.goForwardButton setTitleColor:[UIColor whiteColor] forState:UIControlStateHighlighted];
+
+    [self.myView animatingTheForegroundImageWithImage:[UIImage imageNamed:@"blue"]];
+
+}
+
+
 - (IBAction)goForwardButtonPressed {
     SecondViewController *secondViewController = SecondViewController.new;
     [self.navigationController pushViewController:secondViewController animated:YES];
+
 }
 
 @end
+