UGUI 之 使用EventTrigger 按钮监听事件系统

创建自己的EventTriggerListener 类，继承自EventTrigger，，，

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

public class EventTriggerListener : UnityEngine.EventSystems.EventTrigger
{ public delegate void VoidDelegate(GameObject go); public VoidDelegate onClick; public VoidDelegate onSelect; public VoidDelegate onBegainDrag; public VoidDelegate onDown; public VoidDelegate onUp; public VoidDelegate onPress; public VoidDelegate DesPress; 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 OnSelect(BaseEventData eventData) { if (onSelect != null) onSelect(gameObject); } public override void OnBeginDrag(PointerEventData eventData) { if (onBegainDrag != null) onBegainDrag(gameObject); } //public override void OnPointerDown(PointerEventData eventData) //{ // if (onDown != null) onDown(gameObject); //} //public override void OnPointerUp(PointerEventData eventData) //{ // if (onUp != null) onUp(gameObject); //} public override void OnPointerDown(PointerEventData eventData) { if (onPress != null) { onPress(gameObject); } } public override void OnPointerUp(PointerEventData eventData) { if (DesPress != null) { DesPress(gameObject); } }

}
  
 

  
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将上面的代码放到自己的项目中，就可以做监听按钮事件了，
在有UGUI的组件的游戏物体都可以使用，，例子如下：

using UnityEngine;
using System.Collections;
using UnityEngine.UI;
using UnityEngine.EventSystems;
using UnityEngine.Events;
public class UIMain : MonoBehaviour {
	private Button	button;
	private Image image;
	void Start () 
	{
		button = this.GetComponent<Button>();
		image = this.GetComponent<Image>();
		//添加监听
		EventTriggerListener.Get(button.gameObject).onClick =OnButtonClick;
		EventTriggerListener.Get(image.gameObject).onClick =OnButtonClick;
		//取消监听
		// Destroy(EventTriggerListener.Get(image.gameObject).GetComponent<EventTriggerListener>()); 
	} private void OnButtonClick(GameObject go){
		//在这里监听按钮的点击事件
		if(go == button.gameObject){ Debug.Log ("DoSomeThings");
		}
	}
}

  
 

  
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文章来源: czhenya.blog.csdn.net，作者：陈言必行，版权归原作者所有，如需转载，请联系作者。

原文链接：czhenya.blog.csdn.net/article/details/82954859