统一笔记下拉刷新列表

using System; using System.Collections; using System.Collections.Generic; using Sirenix.OdinInspector; using UnityEngine; using UnityEngine.EventSystems; using UnityEngine.UI; public class ScrollRectUpdateView : MonoBehaviour, IBeginDragHandler, IEndDragHandler, IDragHandler { private ScrollRect scrollRect; [SerializeField] private RectTransform contentTransform; [SerializeField] private ScrollRefreshInfo upRefreshInfo; [SerializeField] private ScrollRefreshInfo downRefreshInfo; private bool isUpRefresh; private bool isDownRefresh; private bool isRefreshing; [SerializeField] [ReadOnly] float refreshNumber = 100; [SerializeField] [ReadOnly] float canRefreshNumber = 50; private Action upAction; private Action downAction; private void Awake() { this.scrollRect = this.GetComponent<ScrollRect>(); if (scrollRect == null) throw new NullReferenceException(); upRefreshInfo.ShowAndHideSelf(false); downRefreshInfo.ShowAndHideSelf(false); this.isUpRefresh = false; this.isDownRefresh = false; isRefreshing = false; } public void OnBeginDrag(PointerEventData eventData) { if (this.isRefreshing) return; } public void OnDrag(PointerEventData eventData) { if (this.isRefreshing) return; var rectTransform = this.transform.GetComponent<RectTransform>(); float height = 0f; var childCount = this.contentTransform.childCount; var child = this.contentTransform.GetChild(1).GetComponent<RectTransform>(); if (this.contentTransform.TryGetComponent(out VerticalLayoutGroup group)) { height = child.rect.height * (childCount - 2) + group.spacing * (childCount - 3) - rectTransform.rect.height; } else height = child.rect.height * (childCount - 2) - rectTransform.rect.height; var he = this.contentTransform.anchoredPosition.y - height; Debug.Log($"one : {he}, two : {height}"); // Up if (this.contentTransform.anchoredPosition.y < 0) { this.upRefreshInfo.ShowAndHideSelf(true); if (contentTransform.anchoredPosition.y - child.rect.height >= -this.canRefreshNumber) { this.upRefreshInfo.SetContent("下拉可刷新"); this.isUpRefresh = false; } else if (contentTransform.anchoredPosition.y - child.rect.height <= -this.refreshNumber) { this.upRefreshInfo.SetContent("释放后刷新"); this.isUpRefresh = true; } } else { this.isUpRefresh = false; this.upRefreshInfo.ShowAndHideSelf(false); } // down if (he > 0) { this.downRefreshInfo.ShowAndHideSelf(true); if (he <= this.canRefreshNumber) { this.downRefreshInfo.SetContent("上拉可刷新"); this.isDownRefresh = false; } else if (he >= this.refreshNumber) { this.downRefreshInfo.SetContent("释放后刷新"); this.isDownRefresh = true; } } else { this.isDownRefresh = false; this.downRefreshInfo.ShowAndHideSelf(false); } } public void OnEndDrag(PointerEventData eventData) { if (this.isRefreshing) return; if (this.isUpRefresh) { Debug.Log("开始刷新 Up"); StartCoroutine(RefreshData(this.upRefreshInfo)); } else if (this.isDownRefresh) { Debug.Log("开始刷新 Down"); StartCoroutine(RefreshData(this.downRefreshInfo)); } else { this.upRefreshInfo.ShowAndHideSelf(false); this.downRefreshInfo.ShowAndHideSelf(false); } } private IEnumerator RefreshData(ScrollRefreshInfo info) { isRefreshing = true; info.SetContent("刷新中"); yield return new WaitForSeconds(3); info.SetContent("刷新成功"); yield return new WaitForSeconds(2); info.SetContent("释放后刷新"); info.ShowAndHideSelf(false); this.isUpRefresh = false; this.isDownRefresh = false; isRefreshing = false; } }