iOS中制作gif

// 创建 Gif 步骤。 基本上需要实现的就是这几个调用的methods  
String [] imageFilePaths = new String[]{"c:\\01.png","c:\\02.png","c:\\03.png"}; 
        String outputFilePath = "c:\\tmp\\test.gif";
        AnimatedGifEncoder encdr = new AnimatedGifEncoder();  //实例
        encdr.Start( outputFilePath );  
        encdr.SetDelay(500); // 图片间延迟
        encdr.SetRepeat(0);  
        for (int i = 0, count = imageFilePaths.Length; i < count; i++ ) 
        {
         encdr.AddFrame( Image.FromFile( imageFilePaths[i] ) ); // 添加图片， 每个图片叫做一帧
        }
        encdr.Finish();

// 读取 Gif 步骤和调用的methods 
        string outputPath = "c:\\tmp\\";
        GifDecoder gifDecoder = new GifDecoder();  //解码对象 实例
        gifDecoder.Read( "c:\\tmp\\test.gif" );
        for ( int i = 0, count = gifDecoder.GetFrameCount(); i < count; i++ ) 
        {
         Image frame = gifDecoder.GetFrame( i ); // 第i 帧的图片拿出来
         frame.Save( outputPath + Guid.NewGuid().ToString() 
                               + ".png", ImageFormat.Png );
        }