Texture Atlases for UIKit with TexturePacker

// Created by Daniel Sefton, 2012
// Do what you want license
 
#import <Foundation/Foundation.h>
 
/**
 UIImage category to handle parsing of TexturePacker's Generic XML format.
 */
@interface UIImage (Sprite)
 
/**
 The method returns a dictionary of UIImages. Use this function once and reference its contents.
 @param filename the XML file to load, which should be added to your project's bundle
 @returns dictionary of UIImages
 */
+ (NSDictionary*)spritesWithContentsOfFile:(NSString*)filename;
 
@end

// Created by Daniel Sefton, 2012
// Do what you want license
 
#import "UIImage+Sprite.h"
#import "XMLReader.h"
 
@implementation UIImage (Sprite)
 
+ (NSDictionary*)spritesWithContentsOfFile:(NSString*)filename
{
	NSString* file = [[filename lastPathComponent] stringByDeletingPathExtension];
	if ([[UIScreen mainScreen] respondsToSelector:@selector(displayLinkWithTarget:selector:)] && 
		([UIScreen mainScreen].scale == 2.0))
	{
		file = [NSString stringWithFormat:@"%@@2x", file];
	}
	NSString* extension = [filename pathExtension];
	NSData* data = [NSData dataWithContentsOfFile:[[NSBundle mainBundle] pathForResource:file ofType:extension]];
	NSError* error = nil;
	NSDictionary* xmlDictionary = [XMLReader dictionaryForXMLData:data error:&error];
	NSDictionary* xmlTextureAtlas = [xmlDictionary objectForKey:@"TextureAtlas"];
	UIImage* image = [UIImage imageNamed:[xmlTextureAtlas objectForKey:@"imagePath"]];
	CGSize size = CGSizeMake([[xmlTextureAtlas objectForKey:@"width"] integerValue], 
		[[xmlTextureAtlas objectForKey:@"height"] integerValue]);
 
	if (!image || CGSizeEqualToSize(size, CGSizeZero)) return nil;
	CGImageRef spriteSheet = [image CGImage];
	NSMutableDictionary* tempDictionary = [[[NSMutableDictionary alloc] init] autorelease];
 
	NSArray* xmlSprites = [xmlTextureAtlas objectForKey:@"sprite"];
	for (NSDictionary* xmlSprite in xmlSprites)
	{
		CGImageRef sprite = CGImageCreateWithImageInRect(spriteSheet, CGRectMake(
			[[xmlSprite objectForKey:@"x"] integerValue], 
			[[xmlSprite objectForKey:@"y"] integerValue], 
			[[xmlSprite objectForKey:@"w"] integerValue], 
			[[xmlSprite objectForKey:@"h"] integerValue]));
		[tempDictionary setObject:[UIImage imageWithCGImage:sprite] forKey:[xmlSprite objectForKey:@"n"]];
		CGImageRelease(sprite);
	}
 
    return [NSDictionary dictionaryWithDictionary:tempDictionary];
}
 
@end

self.mySprites = [UIImage spritesWithContentsOfFile:@"mysprites.xml"];
 
UIImage* myImage = [self.mySprites objectForKey:@"myimage"];