private readonly Dictionary <string, ILoader> Loaders = new Dictionary <string, ILoader>(); //加载器
        #endregion

        #region ----公有方法----
        public ILoader GetDownloader(string loaderName, string[] urls, ResType resType, Action <bool, IRes> listener = null)
        {
            ILoader loader = GetLoader(loaderName);

            if (loader == null)
            {
                loader = ObjectPool <ResDownloader> .Instance.Get();

                loader.Name = loaderName;
                Loaders.Add(loaderName, loader);
                loader.Add(urls, resType, listener, false);
            }
            else
            {
                loader.Add(urls, resType, listener, true);
            }

            return(loader);
        }