/// <summary>
/// 异步加载资源
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="assetbundlename"></param>
/// <param name="assetname"></param>
public void LoadAssetAsyn <T>(string assetbundlename, string assetname) where T : UnityEngine.Object
{
_resourceHelper?.LoadAssetAsyn <T>(assetbundlename, assetname, LoadAssetAsyncCallback);
}