static IEnumerator StartDownLoad()
    {
        Debug.Log("下载服务器文件到本地");

        UpdateDateCallBack(HotUpdateStatusEnum.Updating, GetHotUpdateProgress(true, true, GetDownLoadFileProgress(0)));

        RecordTable hotupdateData = RecordManager.GetData(c_HotUpdateRecordName);

        for (int i = 0; i < s_downLoadList.Count; i++)
        {
            Hash128 md5Tmp = Hash128.Parse(hotupdateData.GetRecord(s_downLoadList[i].name, "null"));

            if (md5Tmp.Equals(s_downLoadList[i].md5))
            {
                Debug.Log("文件已更新完毕 " + s_downLoadList[i].name);
                //该文件已更新完毕
                UpdateDateCallBack(HotUpdateStatusEnum.Updating, GetHotUpdateProgress(true, true, GetDownLoadFileProgress(i)));
            }
            else
            {
                string downloadPath = s_resourcesFileDownLoadPath + s_downLoadList[i].name;

                WWW www = new WWW(downloadPath);
                yield return(www);

                if (www.error != null && www.error != "")
                {
                    Debug.LogError("下载出错! " + downloadPath + " " + www.error);
                    UpdateDateCallBack(HotUpdateStatusEnum.UpdateFail, GetHotUpdateProgress(true, true, GetDownLoadFileProgress(i)));

                    yield break;
                }
                else
                {
                    Debug.Log("下载成功! " + downloadPath);

                    ResourceIOTool.CreateFile(PathTool.GetAssetsBundlePersistentPath() + "/" + s_downLoadList[i].name, www.bytes);
                    RecordManager.SaveRecord(c_HotUpdateRecordName, s_downLoadList[i].name, s_downLoadList[i].md5.ToString());

                    UpdateDateCallBack(HotUpdateStatusEnum.Updating, GetHotUpdateProgress(true, true, GetDownLoadFileProgress(i)));
                }
            }
        }

        //保存版本信息
        //保存文件信息
        ResourceIOTool.CreateFile(PathTool.GetAssetsBundlePersistentPath() + c_versionFileName, s_versionByteCache);
        ResourceIOTool.CreateFile(PathTool.GetAssetsBundlePersistentPath() + AssetsManifestManager.c_ManifestFileName, s_ManifestByteCache);

        //从stream读取配置
        RecordManager.SaveRecord(c_HotUpdateRecordName, c_useHotUpdateRecordKey, true);

        //重新生成资源配置
        ResourcesConfigManager.LoadResourceConfig();
        AssetsManifestManager.LoadAssetsManifest();
        //延迟2秒卸载Bundle缓存,防止更新界面掉图(更新时间短时,卸载过快界面会掉图)
        //yield return new WaitForSeconds(2);
        ResourceManager.ReleaseAll(false);
        UpdateDateCallBack(HotUpdateStatusEnum.UpdateSuccess, 1);
    }