1.定义一个协程LoadNonObjFromAB
IEnumerator LoadNonObjFromAB(string ABURL, GameObject go, string assetName)
参数含义：ABURL：要下载的AB包地址 go:用于测试，显示加载贴图 assetName:要加载的资源名称
IEnumerator LoadNonObjFromAB(string ABURL, GameObject go, string assetName)
{
//参数检查
if(string.IsNullOrEmpty(ABURL) || go == null)
{
Debug.LogError("参数错误！");
}
using (WWW www = new WWW(ABURL))
{
yield return www;
AssetBundle ab = www.assetBundle; //获取AB包
if(ab != null)
{
if(assetName == "")
{
go.GetComponent<Renderer>().material.mainTexture = ab.mainAsset as Texture;
}
else
{ go.GetComponent<Renderer>().material.mainTexture = (Texture)ab.LoadAsset(assetName); //替换贴图为下载的贴图
print(assetName); }
//卸载AB包
ab.Unload(false);
}
else
{
Debug.LogError("下载错误："+www.error);
}
}
} 2.调用协程
private void Start()
{
StartCoroutine(LoadNonObjFromAB(URL1, testGo, assetName1));
}
（在调用之前要对参数初始化）