NGUI 点击按钮切换背景

using UnityEngine;
using System.Collections;


public class TiaoZhuan : MonoBehaviour
{


    public GameObject TiaoZhuan_3;
    public GameObject TiaoZhuan_2;


    void Start()
    {
        UIEventListener.Get(TiaoZhuan_3).onClick = tiaoZhuan;
    }
    public void tiaoZhuan(GameObject btn)
    {
        this.gameObject.SetActive(false);
        TiaoZhuan_3.SetActive(true);
    }
}