U3d 注意

设置layer ：不要使用go.layer= intMM;
要使用Nguitool.Setlayer(go,intLayer);

static public void SetLayer (GameObject go, int layer)
{
    go.layer = layer;

    Transform t = go.transform;

    for (int i = 0, imax = t.childCount; i < imax; ++i)
    {
        Transform child = t.GetChild(i);
        SetLayer(child.gameObject, layer);
    }
}