try
        {
            BinaryFormatter bf = new BinaryFormatter();//二进制格式
            using(FileStream fs = File.Create(Application.persistentDataPath + "/GameData.data"))
            {
                data.SetBestScoreArr(bestScoreArr);
                data.SetDiamondCount(diamondCount);
                data.SetIsFirstGame(isFirstGame);
                data.SetIsMusicOn(isMusicOn);
                data.SetSelectSkin(selectSkin);
                data.SetSkinUnlocked(skinUnlocked);
                bf.Serialize(fs, data);//在fs文件夹里面序列化data的内容（将字符变成数字）//利用二进制格式化将data序列化至文件流fs中
            }
        }

使用using 来自动释放liu

Serialize