unity一个按钮实现开和关

using system.collections;
using system.collections.generic;
using unityengine;

public class buttoncll : monobehaviour {
    private int countint = 0;
    public gameobject seting;
    private bool count = true;
    // use this for initialization
    void start () {
        
    }
    
    // update is called once per frame
    void update () {
        // *******************************************第一种方法******************************************
        //每次点击来判断它的奇偶性
        if (input .getkeyup (keycode.keypadenter))
        {
         
            countint++;
            if (countint %2==0)
            {
                seting.setactive(false);
            }
            else
            {
                seting.setactive(true);
            }       
        }
        // *******************************************第二种方法******************************************
        if (input .getkeydown (keycode .keypadenter ))
        {
            count = !count;
            if (count)
            {
                seting.setactive(false);
            }
            else
            {
                seting.setactive(true);
            }
        }
    }
}