UIImage category to create a masked image

UIImage+Mask.h

//
//  UIImage+Mask.h
//  Golopo
//
//  Created by Esense-15 on 22/09/14.
//  Copyright (c) 2014 esense. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UIImage (Mask)

+(UIImage *)maskImage:(UIImage *)image withMask:(UIImage *)maskImage;

@end

UIImage+Mask.m

//
//  UIImage+Mask.m
//  Golopo
//
//  Created by Esense-15 on 22/09/14.
//  Copyright (c) 2014 esense. All rights reserved.
//

#import "UIImage+Mask.h"

@implementation UIImage (Mask)

+(UIImage *)maskImage:(UIImage *)image withMask:(UIImage *)maskImage {
    
	CGImageRef maskRef = maskImage.CGImage;
	CGImageRef mask = CGImageMaskCreate(CGImageGetWidth(maskRef),
                                        CGImageGetHeight(maskRef),
                                        CGImageGetBitsPerComponent(maskRef),
                                        CGImageGetBitsPerPixel(maskRef),
                                        CGImageGetBytesPerRow(maskRef),
                                        CGImageGetDataProvider(maskRef), NULL, false);
    
	CGImageRef masked = CGImageCreateWithMask([image CGImage], mask);
	return [UIImage imageWithCGImage:masked];
}

@end