Unity3d UI中对于鼠标的监听事件

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我是靠谱客的博主甜美野狼，这篇文章主要介绍Unity3d UI中对于鼠标的监听事件，现在分享给大家，希望可以做个参考。

Plane中的的一个Button and Image控件

方法一.

倒入命名空间 using UnityEngine.EventSystem;

using UnityEngine.UI;

通过接口 EventTrigger （EventTrigger继承类很多的父类，可以查看其源码VS编辑器按 F12 查看）

继承了EventTrigger接口之后，重写里面的对于鼠标的监听的虚（virtual）方法

查看接口EventTrigger里面的虚方法

例：

重写

复制代码

public override void OnPointerEnter(PointerEventData eventData)
    {
        print("鼠标进入");
    }

public override void OnPointerExit(PointerEventData eventData)
    {
        print("鼠标离开");
    }
    public override void OnPointerDown(PointerEventData eventData)
    {
        print("鼠标点下");
    }
    public override void OnPointerUp(PointerEventData eventData)
    {
        print("鼠标抬起");
    }

public override void OnPointerClick(PointerEventData eventData)
    {
        print("鼠标点击");
    }
    public override void OnBeginDrag(PointerEventData eventData)
    {
        print("开始拖拽");

}
    public override void OnDrag(PointerEventData eventData)
    {
        print("拖拽中");
        //transform.position = Vector3.Lerp(transform.position, Input.mousePosition, Time.deltaTime);
        //Vector3.MoveTowards(transform.position,Input.mousePosition,100);
        transform.position = Input.mousePosition;
    }
    public override void OnEndDrag(PointerEventData eventData)
    {
        print("结束拖拽");
    }

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public override void OnPointerEnter(PointerEventData eventData)
    {
        print("鼠标进入");
    }

     public override void OnPointerExit(PointerEventData eventData)
    {
        print("鼠标离开");
    }
    public override void OnPointerDown(PointerEventData eventData)
    {
        print("鼠标点下");
    }
    public override void OnPointerUp(PointerEventData eventData)
    {
        print("鼠标抬起");
    }

    public override void OnPointerClick(PointerEventData eventData)
    {
        print("鼠标点击");
    }
    public override void OnBeginDrag(PointerEventData eventData)
    {
        print("开始拖拽");

    }
    public override void OnDrag(PointerEventData eventData)
    {
        print("拖拽中");
        //transform.position = Vector3.Lerp(transform.position, Input.mousePosition, Time.deltaTime);
        //Vector3.MoveTowards(transform.position,Input.mousePosition,100);
        transform.position = Input.mousePosition;
    }
    public override void OnEndDrag(PointerEventData eventData)
    {
        print("结束拖拽");
    }

方法二.

使用 AddListenter() 方法

只要控件下面有 On Click / On value Change 等都可以添加AddListenter方法

例如对 Button 的监听

复制代码

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void Start () {
	   Button m_button= GetComponent<Button>();
        m_button.onClick.AddListener(Onclick);
	}
	
	// Update is called once per frame
	void Update () {
		
	}

    void Onclick()
    {
        print("第二种委托事件监听");
    }