Unity如何在精灵上使用UI点击事件

//脚本
using UnityEngine;
using UnityEngine.EventSystems;
public class PointerTest : MonoBehaviour,IPointerClickHandler,IPointerDownHandler,IPointerUpHandler
{
    
    
    public void OnPointerClick(PointerEventData eventData)
    {
    
    
        Debug.Log("OnPointerClick");
    }

    public void OnPointerDown(PointerEventData eventData)
    {
    
    
        Debug.Log("OnPointerDown");
    }

    public void OnPointerUp(PointerEventData eventData)
    {
    
    
        Debug.Log("OnPointerUp");
    }
}