ChivaFrameWork/OperationUIFrame/OperationUIFrameV2/Scripts/UI/ScrollViewItem/ScrollViewItem.cs

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

public class ScrollViewItem : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler,IScrollHandler
{
    // Start is called before the first frame update

    public ScrollRect scrollview;

    public void setScrollView(ScrollRect scrollview)
    {
        this.scrollview = scrollview;
    }

    //子scrollview调用OnBeginDrag时，传递OnBeginDrag到外层的scrollview，也就是这里的scrollview
    public void OnBeginDrag(PointerEventData eventdata)
    {
        scrollview.OnBeginDrag(eventdata);
    }

    public void OnDrag(PointerEventData eventdata)
    {
        scrollview.OnDrag(eventdata);
        scrollview.OnScroll(eventdata);
    }

    public void OnEndDrag(PointerEventData eventdata)
    {
        scrollview.OnEndDrag(eventdata);
       
    }

    public void OnScroll(PointerEventData eventData)
    {
        scrollview.OnScroll(eventData);
    }
}