unity button用法

1.MonoBehaviour 接扣事件

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.EventSystems;


public class ButtonGai : MonoBehaviour, IPointerDownHandler, IPointerUpHandler
{

    public void OnPointerDown(PointerEventData eventData)
    {
      //鼠标按下事件
    }

    public void OnPointerUp(PointerEventData eventData)
    {
     //鼠标抬起事件
    }
}
2.图片切换

 public Button btn;
 public Sprite downSprite;

btn.GetComponent<Image>().sprite = downSprite;

3.鼠标点击事件

void Start () {

Button btn = this.GetComponent<Button> ();

btn.onClick.AddListener (OnClick);

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}

private void OnClick(){

Debug.Log ("Button Clicked. ClickHandler.");

}

注意:
 1.这个 AddListener 每次调用都会添加一个监听,不能放在UpDate里;
 2.如果脚本是 DontDestroyOnLoad 的,记得在 AddListener 之前加上 button.onClick.RemoveAllListeners();
 3.如果不想清空按钮所有事件(虽然很少这么做),你可以用 button.onClick.RemoveListener(btnAction);来移除指定事件;
 

private GameObject buttonObj;
 9     private void Start()
10     {
11         buttonObj = GameObject.Find("Button");
12         buttonObj.GetComponent<Button>().onClick.AddListener(M);
13         buttonObj.GetComponent<Button>().onClick.AddListener(F);
14     }
15     void M()
16     {
17         print("执行了M方法!");
18     }
19     public void F()
20     {
21         print("执行了N方法!");
22     }

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转载自blog.csdn.net/weixin_42399500/article/details/83504400
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