using UnityEngine;

 using System.Collections;

 public class testLoadFromAB : MonoBehaviour {

     IEnumerator DownloadAndCache()

     {

         while (!Caching.ready)

             yield return null;

         //注意，从本地加载时，必须使用前缀 file:///或file://，从网络加载则使用 http://，这两种协议可以在iphone和WINDOWS, 安卓上通用

         //UNITY MANUAL:

         //http://, https:// and file:// protocols are supported on iPhone.

         //ftp:// protocol support is limited to anonymous downloads only. Other protocols are not supported.

         WWW www = WWW.LoadFromCacheOrDownload ("file:///Z:/unity/learn-test/Assets/AssetBundles/cubes.unity3d", );

         yield return www;

         if(!string.IsNullOrEmpty (www.error)){//有些平台不支持string为null，这种写法可以避免意外

             Debug.LogError (www.error);

             yield break;

         }

         AssetBundle bundle = www.assetBundle;

         //注意必须使用Instantiate实例化出来才能将两个CUBE显示到场景中

         GameObject cube1 = Instantiate (bundle.LoadAsset ("DecalCube2")) as GameObject;

         GameObject cube2 = Instantiate (bundle.LoadAsset ("DecalCube3")) as GameObject;

     }

     // Use this for initialization

     void Start () {

         StartCoroutine ("DownloadAndCache");

     }

     // Update is called once per frame

     void Update () {

     }

 }