Unity中加载模型

using UnityEngine;
using System.Collections;

public class text : MonoBehaviour {

	// Use this for initialization
	void Start () {
        //打包后的模型名称
        string name = "houyi@skin.unity3d";
        //打包后模型存放的目录
        string url = "file://C:/Users/zyc/Desktop/PackProjectExport/Output/";
        //通过协成加载模型
        StartCoroutine(ss(url,name));
	}
	
    public IEnumerator ss(string url,string name)
    {
        WWW www = new WWW(url+name);
        yield return www;
        GameObject obj = (GameObject)Instantiate(www.assetBundle.mainAsset);
    }
	// Update is called once per frame
	void Update () {
	
	}
}