Create an animated UIImage from .gif data.

gistfile1.m

+ (UIImage *)imageFromGifData:(NSData *)data {
    CGImageSourceRef source = CGImageSourceCreateWithData((__bridge CFTypeRef)data, NULL);
    if (!source) {
        return nil;
    }
    CFDictionaryRef dict = CGImageSourceCopyPropertiesAtIndex(source, 0, NULL);
    NSDictionary *metadata = (__bridge NSDictionary *)dict;
    CGFloat offset = 0.0;
    if (metadata[@"{GIF}"]) {
        NSDictionary *meta = metadata[@"{GIF}"];
        offset = [meta[@"DelayTime"] floatValue];
    }
    CFRelease(dict);
    int64_t count = CGImageSourceGetCount(source);
    NSMutableArray *images = [NSMutableArray arrayWithCapacity:count];
    for (int64_t i = 0; i < count; i++) {
        CGImageRef cgImage = CGImageSourceCreateImageAtIndex(source, i, NULL);
        if (cgImage == nil) {
            CFRelease(source);
            return nil;
        }
        [images addObject:[UIImage imageWithCGImage:cgImage]];
        CGImageRelease(cgImage);
    }
    CFRelease(source);
    return [UIImage animatedImageWithImages:images duration:count * offset];
}

Make sure to add

#import <ImageIO/ImageIO.h>

To the file.