ict.xunfei/Assets/Scripts/UI/MainScenesUI/ButtonOn.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ButtonOn : MonoBehaviour
{
    int sum = 1;

    public void show()
    {
        if (sum%2!=0)
        {
            gameObject.SetActive(false);
        }
        else
        {
            gameObject.SetActive(true);
        }
        sum++;
    }
}