关于UGUI事件EventListener怎么用代码直接绑定事件

将以下脚本放入工程文件

using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
public class EventTriggerListener : UnityEngine.EventSystems.EventTrigger{
public delegate void VoidDelegate (GameObject go);
public VoidDelegate onClick;
public VoidDelegate onDown;
public VoidDelegate onEnter;
public VoidDelegate onExit;
public VoidDelegate onUp;
public VoidDelegate onSelect;
public VoidDelegate onUpdateSelect;

static public EventTriggerListener Get (GameObject go)
{
EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
if (listener == null) listener = go.AddComponent<EventTriggerListener>();
return listener;
}
public override void OnPointerClick(PointerEventData eventData)
{
if(onClick != null) onClick(gameObject);
}
public override void OnPointerDown (PointerEventData eventData){
if(onDown != null) onDown(gameObject);
}
public override void OnPointerEnter (PointerEventData eventData){
if(onEnter != null) onEnter(gameObject);
}
public override void OnPointerExit (PointerEventData eventData){
if(onExit != null) onExit(gameObject);
}
public override void OnPointerUp (PointerEventData eventData){
if(onUp != null) onUp(gameObject);
}
public override void OnSelect (BaseEventData eventData){
if(onSelect != null) onSelect(gameObject);
}
public override void OnUpdateSelected (BaseEventData eventData){
if(onUpdateSelect != null) onUpdateSelect(gameObject);
}
}然后在自己物体上绑定事件，如下
using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
public class UIMain : MonoBehaviour {
Button button;
Image image;
void Start ()
{
button = transform.Find("Button").GetComponent<Button>();
image = transform.Find("Image").GetComponent<Image>();
EventTriggerListener.Get(button.gameObject).onClick =OnButtonClick;
EventTriggerListener.Get(image.gameObject).onClick =OnButtonClick;
}

private void OnButtonClick(GameObject go){
//在这里监听按钮的点击事件
if(go == button.gameObject){
Debug.Log ("DoSomeThings");
}
}
}这样在整个项目中，就不用再面板中绑定eventlistener事件手动拖拽了。

当然 ，你还可以扩展EventTriggerListener类或者让物体继承一些Ipoint之类的接口来实现按钮点击拖拽等功能。