工作中我们拿到的是一个GIF文件，如果不作处理，直接使用SDWebImage就会无限次播放，那么我们只要他播放一次怎么办呢，上代码：

- (void)showGifImageOnlyOnceWithImageView:(UIImageView*)imageView path:(NSString*)path{

    NSData *data = [NSData dataWithContentsOfFile:path];

    CGImageSourceRef gifSource = CGImageSourceCreateWithData(CFBridgingRetain(data), nil);

    size_tgifCount =CGImageSourceGetCount(gifSource);

    NSMutableArray *frames = [[NSMutableArray alloc]init];

    for(size_ti =0; i< gifCount; i++) {

        CGImageRefimageRef =CGImageSourceCreateImageAtIndex(gifSource, i,NULL);

        UIImage*image = [UIImageimageWithCGImage:imageRef];

        [framesaddObject:image];

        CGImageRelease(imageRef);

    }

//从这里开始是不是很熟悉

    imageView.animationImages= frames;

    imageView.animationDuration=2;

    imageView.animationRepeatCount = 1;

    [imageViewstartAnimating];

}