首先想到的是 UIInageView 播放图片数组。

- (void)gif_imageView {
    UIImageView *gifImageView = [[UIImageView alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    NSArray *gifArray = @[[UIImage imageNamed:@"1"],
                          [UIImage imageNamed:@"2"],
                          [UIImage imageNamed:@"3"],
                          [UIImage imageNamed:@"4"],
                          [UIImage imageNamed:@"5"],
                          [UIImage imageNamed:@"6"]];
    
    gifImageView.animationImages = gifArray; //动画图片数组
    gifImageView.animationDuration = 5; //执行一次完整动画所需的时长
    gifImageView.animationRepeatCount = 1;  //动画重复次数
    [gifImageView startAnimating];
    [self.view addSubview:gifImageView];
}

UIWebView 播放

- (void)gif_webView {
    // 设定位置和大小
    CGRect frame = CGRectMake(11,11,0,0);
    frame.size = [UIImage imageNamed:@"test.gif"].size;
    // 读取gif图片数据
    NSData *gif = [NSData dataWithContentsOfFile: [[NSBundle mainBundle] pathForResource:@"test" ofType:@"gif"]];
    // view生成
    UIWebView *webView = [[UIWebView alloc] initWithFrame:frame];
    webView.userInteractionEnabled = NO;//用户不可交互
    [webView loadData:gif MIMEType:@"image/gif" textEncodingName:@"12" baseURL:[NSURL URLWithString:@"www.baidu.com"]];
    [self.view addSubview:webView];
}

c 解析gif 分段播放 && 转换成一组 png 图片

http://www.cnblogs.com/smileEvday/archive/2013/03/28/Gif.html
代码就不抄袭了。
SvGifView ，不行就百度下他写的demo 吧。