本文共 1890 字，大约阅读时间需要 6 分钟。

01.添加事件

using UnityEngine;using UnityEngine.EventSystems;[RequireComponent(typeof(EventTrigger))]public class ImageDrag : MonoBehaviour {
       public void Click()    {
           Debug.Log("Click");    }}

02.、

using System.Collections.Generic;using UnityEngine;using UnityEngine.EventSystems;using UnityEngine.UI;public class Test5 : MonoBehaviour {
       private EventTrigger eventTrigger;    void Awake()    {
           eventTrigger = this.GetComponent
   
    ();    }    void Start()    {
           eventTrigger.triggers = new List
    
     ();        EventTrigger.Entry entry = new EventTrigger.Entry();        entry.eventID = EventTriggerType.PointerClick;        entry.callback = new EventTrigger.TriggerEvent();        entry.callback.AddListener((data) =>        {
               Click();        });    }    private void Click()    {
           Debug.Log("Click");    }}
    
   

using UnityEngine;using UnityEngine.EventSystems;public class DragTest4 : MonoBehaviour ,IBeginDragHandler,IDragHandler,IEndDragHandler,IInitializePotentialDragHandler,IDropHandler{
       public RectTransform canRectTransform;    public void OnBeginDrag(PointerEventData eventData)    {
           Debug.Log("beginDrag");    }    //UI跟随鼠标    public void OnDrag(PointerEventData eventData)    {
           Debug.Log("Drag");        var rec = this.GetComponent
   
    ();        Vector3 pos = Vector3.zero;        RectTransformUtility.ScreenPointToWorldPointInRectangle(rec, eventData.position, eventData.enterEventCamera,            out pos);        rec.position = pos;    }    public void OnEndDrag(PointerEventData eventData)    {
           Debug.Log("EndDrag");                 }    public void OnInitializePotentialDrag(PointerEventData eventData)    {
           Debug.Log("OnInitializePotential");    }    public void OnDrop(PointerEventData eventData)    {
           Debug.Log("Drop");    }}
   

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