UINavigationBar+CustomBackground.h

//
//  UINavigationBar+CustomBackground.h
//  CustomizingNavigationBarBackground
//
//  Created by Ahmet Ardal on 2/10/11.
//  Copyright 2011 LiveGO. All rights reserved.
//

#import <Foundation/Foundation.h>

#define kNavigationBarCustomTintColor   [UIColor colorWithRed:0.093 green:0.653 blue:0.828 alpha:1.0]

@interface UINavigationBar(CustomBackground)

- (void) applyCustomTintColor;

@end

UINavigationBar+CustomBackground.m

//
//  UINavigationBar+CustomBackground.m
//  CustomizingNavigationBarBackground
//
//  Created by Ahmet Ardal on 2/10/11.
//  Copyright 2011 LiveGO. All rights reserved.
//

#import "UINavigationBar+CustomBackground.h"

@implementation UINavigationBar(CustomBackground)

+ (UIImage *) bgImagePortrait
{
    static UIImage *image = nil;
    if (image == nil) {
        image = [[UIImage imageNamed:@"navbar_bg_portrait"] retain];
    }

    return image;
}

+ (UIImage *) bgImageLandscape
{
    static UIImage *image = nil;
    if (image == nil) {
        image = [[UIImage imageNamed:@"navbar_bg_landscape"] retain];
    }

    return image;
}

- (void) drawLayer:(CALayer *)layer inContext:(CGContextRef)context
{
    if ([self isMemberOfClass:[UINavigationBar class]] == NO) {
        return;
    }

    UIImage *image = (self.frame.size.width > 320) ?
                        [UINavigationBar bgImageLandscape] : [UINavigationBar bgImagePortrait];
    CGContextClip(context);
    CGContextTranslateCTM(context, 0, image.size.height);
    CGContextScaleCTM(context, 1.0, -1.0);
    CGContextDrawImage(context, CGRectMake(0, 0, self.frame.size.width, self.frame.size.height), image.CGImage);
}

- (void) applyCustomTintColor
{
    [self setTintColor:kNavigationBarCustomTintColor];
}

@end

UINavigationBarCustomBackground.h

//
//  UINavigationBar+CustomBackground.h
//  CustomizingNavigationBarBackground
//
//  Created by Ahmet Ardal on 2/10/11.
//  Copyright 2011 SpinningSphere Labs. All rights reserved.
//

#import <Foundation/Foundation.h>

#define kNavigationBarCustomTintColor   [UIColor colorWithRed:0.093 green:0.653 blue:0.828 alpha:1.0]

@interface UINavigationBar(CustomBackground)

- (void) applyCustomTintColor;

@end

UINavigationBarCustomBackground.m

//
//  UINavigationBar+CustomBackground.m
//  CustomizingNavigationBarBackground
//
//  Created by Ahmet Ardal on 2/10/11.
//  Copyright 2011 SpinningSphere Labs. All rights reserved.
//

#import "UINavigationBar+CustomBackground.h"

@implementation UINavigationBar(CustomBackground)

+ (UIImage *) bgImagePortrait
{
    static UIImage *image = nil;
    if (image == nil) {
        image = [[UIImage imageNamed:@"navbar_bg_portrait"] retain];
    }

    return image;
}

+ (UIImage *) bgImageLandscape
{
    static UIImage *image = nil;
    if (image == nil) {
        image = [[UIImage imageNamed:@"navbar_bg_landscape"] retain];
    }

    return image;
}

- (void) drawLayer:(CALayer *)layer inContext:(CGContextRef)context
{
    if ([self isMemberOfClass:[UINavigationBar class]] == NO) {
        return;
    }

    UIImage *image = (self.frame.size.width > 320) ?
                        [UINavigationBar bgImageLandscape] : [UINavigationBar bgImagePortrait];
    CGContextClip(context);
    CGContextTranslateCTM(context, 0, image.size.height);
    CGContextScaleCTM(context, 1.0, -1.0);
    CGContextDrawImage(context, CGRectMake(0, 0, self.frame.size.width, self.frame.size.height), image.CGImage);
}

- (void) applyCustomTintColor
{
    [self setTintColor:kNavigationBarCustomTintColor];
}

@end