unity 动态添加 EventTrigger

代码添加    EventTrigger   方法

 检测鼠标进入UI显示ui的名字非常好用

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

public class ChuFaWaite : MonoBehaviour {
    private Image imagee;
    private EventTrigger trigger;
    // Use this for initialization
    void Start()
    {
        imagee = this.GetComponent<Image>();

        if (!GetComponent<EventTrigger>())
        {
          trigger = gameObject.AddComponent<EventTrigger>();
        }
        else
        {
            trigger = gameObject.GetComponent<EventTrigger>();
        }
        UnityAction<BaseEventData> click = new UnityAction<BaseEventData>(MyClick);
        EventTrigger.Entry myclick = new EventTrigger.Entry();
        myclick.eventID = EventTriggerType.PointerEnter;
        myclick.callback.AddListener(click);

        trigger.triggers.Add(myclick);

        UnityAction<BaseEventData> _click = new UnityAction<BaseEventData>(MyClick_);
        EventTrigger.Entry myclick_ = new EventTrigger.Entry();
        myclick_.eventID = EventTriggerType.PointerExit;
        myclick_.callback.AddListener(_click);
        trigger.triggers.Add(myclick_);


    }

    //进入
    public void MyClick(BaseEventData data)
    {
        imagee.color = Color.white;       
    }
    //离开
    public void MyClick_(BaseEventData data)
    {
        imagee.color = Color.red;     
    }
  
}

 3D物体检测

加入碰撞盒,可用下面代码检测鼠标进入物体,显示物体名字

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

public class Obj_OnTrigger : MonoBehaviour {

    //当鼠标进入碰撞器的时候调用  
    private void OnMouseEnter()
    {
        Debug.Log("进入");
    }
    //当鼠标离开碰撞器的时候调用  
    private void OnMouseExit()
    {
        Debug.Log("离开");
    }
}