【Unity3D】实现UI点击事件穿透

 

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.EventSystems;
using UnityEngine.UI;
public class ClickEventPenetration : MonoBehaviour, IPointerClickHandler
{
    private List<RaycastResult> raycastResults;

    private void Awake()
    {
        raycastResults = new List<RaycastResult>();
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        //获取当前事件所有触发对象
        EventSystem.current.RaycastAll(eventData, raycastResults);
        foreach (var v in raycastResults)
        {
            //过滤自身点击事件(不过滤会死循环,下面也会执行到这个对象脚本的OnPointerClick方法)
            if (v.gameObject.GetComponent<ClickEventPenetration>())
            {
                Debug.LogWarning(v.gameObject);
                continue;
            }
            Debug.Log(v.gameObject);

            //执行触发对象的点击事件
            //ExecuteEvents.Execute(v.gameObject, eventData, ExecuteEvents.pointerClickHandler);

            //仅仅执行物体标签为INeedClick的UI点击事件
            if (v.gameObject.tag == "INeedClick")
            {
                //IPointerClickHandler接口需要传递ExecuteEvents.pointerClickHandler类型进入,其他接口同理
                ExecuteEvents.Execute(v.gameObject, eventData, ExecuteEvents.pointerClickHandler);
            }
        }
    }

    //测试案例直接用这个公共方法作为INeedClickButton的Click事件(直接拽拖赋值)
    public void OnINeedClick()
    {
        Debug.LogError("OnINeedClick!");
    }
}

        注意:EventSystem.current.RaycastAll获取到的对象列表是能够接受事件的,假如你的按钮Button自己身上没有Image,而是Button的子物体有,那么你就要给这个子物体也加上标签Tag才能响应到。

如果ExecuteEvents.Execute不管用,可以试试ExecuteEvents.ExecuteHierarchy

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转载自blog.csdn.net/qq_39574690/article/details/133496452