/// <summary>
 /// 释放资源
 /// </summary>
 /// <param name="sceneName"></param>
 public void DisposeAllAsset(string sceneName)
 {
     if (_DicAllScenes.ContainsKey(sceneName) == true)
     {
         MultiABManager multiABManager = _DicAllScenes[sceneName];
         multiABManager.DisposeAllAsset();
     }
     else
     {
         Debug.LogError(GetType() + "/DisposeAllAsset()/找不到场景名称,无法释放 AssetBundle 资源,请检查!sceneName = " + sceneName);
     }
 }
        /// <summary>
        /// 加载包中指定资源
        /// </summary>
        /// <param name="sceneName">场景名称</param>
        /// <param name="abName">AsssetBundle 名称</param>
        /// <param name="assetName">资源名称</param>
        /// <param name="isCache">是否缓存</param>
        /// <returns></returns>
        public UnityEngine.Object LoadAsset(string sceneName, string abName, string assetName, bool isCache)
        {
            if (_DicAllScenes.ContainsKey(sceneName) == true)
            {
                MultiABManager multiABManager = _DicAllScenes[sceneName];
                return(multiABManager.LoadAsset(abName, assetName, isCache));
            }

            Debug.LogError(GetType() + "/LoadAsset()/找不到场景名称,无法加载AssetBundle资源,请检查!sceneName = " + sceneName);


            return(null);
        }
        /// <summary>
        /// 下载 指定 AssetBundle 包
        /// </summary>
        /// <param name="sceneName"></param>
        /// <param name="abName"></param>
        /// <param name="loadAllComplete"></param>
        /// <returns></returns>
        public IEnumerator LoadAssetBundlePack(string sceneName, string abName, DelLoadComplete loadAllComplete)
        {
            // 参数检查
            if (string.IsNullOrEmpty(sceneName) == true || string.IsNullOrEmpty(abName) == true)
            {
                Debug.LogError(GetType() + "/LoadAssetBundlePack()/sceneName or   is null,请检查");

                yield return(null);
            }

            // 等待 Manifest 清单文件加载完成
            while (ABManifestLoader.GetInstance().IsLoadFinished == false)
            {
                yield return(null);
            }

            _ManifestObj = ABManifestLoader.GetInstance().GetABManifest();
            if (_ManifestObj == null)
            {
                Debug.LogError(GetType() + "/LoadAssetBundlePack()/_ManifestObj is null,请先确保加载 Manifest 清单文件");
                yield return(null);
            }

            if (_DicAllScenes.ContainsKey(sceneName) == false)
            {
                MultiABManager multiABManagerObj = new MultiABManager(sceneName, abName, loadAllComplete);
                _DicAllScenes.Add(sceneName, multiABManagerObj);
            }

            // 多包管理类
            MultiABManager tmpMultiABMgrObj = _DicAllScenes[sceneName];

            if (tmpMultiABMgrObj == null)
            {
                Debug.LogError(GetType() + "/LoadAssetBundlePack()/tmpMultiABMgrObj is null,请检查");
            }


            yield return(tmpMultiABMgrObj.LoadAssetBundle(abName));
        }