IOS GIF图片解析 将gif图片解析成image数组

+ (NSMutableArray *)praseGIFDataToImageArray:(NSData *)data;  
 {  
    NSMutableArray *frames = [[NSMutableArray alloc] init];  
    CGImageSourceRef src = CGImageSourceCreateWithData((CFDataRef)data, NULL);  
    CGFloat animationTime = 0.f;  
    if (src) {  
        size_t l = CGImageSourceGetCount(src);  
        frames = [NSMutableArray arrayWithCapacity:l];  
        for (size_t i = 0; i < l; i++) {  
            CGImageRef img = CGImageSourceCreateImageAtIndex(src, i, NULL);  
            NSDictionary *properties = (NSDictionary *)CGImageSourceCopyPropertiesAtIndex(src, i, NULL);  
            NSDictionary *frameProperties = [properties objectForKey:(NSString *)kCGImagePropertyGIFDictionary];  
            NSNumber *delayTime = [frameProperties objectForKey:(NSString *)kCGImagePropertyGIFUnclampedDelayTime];  
            animationTime += [delayTime floatValue];  
            if (img) {  
                [frames addObject:[UIImage imageWithCGImage:img]];  
                CGImageRelease(img);  
            }  
        }  
        CFRelease(src);  
    }  
     return frames;  
}