UIImage+Size category

UIImage+YGSize.h

//
// UIImage+YGSize.h
//
#import <Foundation/Foundation.h>

@interface UIImage (YGSize)

+ (UIImage *)sizedImageWithName:(NSString *)name;

@end

UIImage+YGSize.m

//
// UIImage+Size.m
//
#import "UIImage+YGSize.h"

@implementation UIImage (YGSize)

+ (UIImage *)sizedImageWithName:(NSString *)name {
	UIImage *image;
	if (IS_IPHONE_5) {
		image = [UIImage imageNamed:[NSString stringWithFormat:@"%@-568h",name]];
		if (!image) {
			image = [UIImage imageNamed:name];
		}
	}
	else if (IS_IPHONE_6) {
		image = [UIImage imageNamed:[NSString stringWithFormat:@"%@-750w",name]];
	}
	else {
		image = [UIImage imageNamed:name];
	}
	return image;
}

@end