37 lines
1.0 KiB
C#
37 lines
1.0 KiB
C#
using System.Collections;
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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using TMPro;
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public class DropdownRebuildTrigger : MonoBehaviour, IPointerClickHandler
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{
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private TMP_Dropdown _dropdown;
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void Awake()
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{
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_dropdown = GetComponent<TMP_Dropdown>();
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}
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// 当点击Dropdown时触发
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public void OnPointerClick(PointerEventData eventData)
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{
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// 只有当Dropdown是可以交互的，才处理
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if (_dropdown != null && _dropdown.interactable)
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{
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StartCoroutine(RebuildLayoutNextFrame());
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}
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}
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IEnumerator RebuildLayoutNextFrame()
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{
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// 等待当前帧结束（等待Dropdown内部逻辑完成列表的Instantiate）
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yield return new WaitForEndOfFrame();
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// 只有当列表确实处于展开状态时，才刷新
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if (_dropdown.IsExpanded)
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{
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LayoutRebuilder.ForceRebuildLayoutImmediate(_dropdown.transform.Find("Dropdown List/Viewport").gameObject.GetComponent<RectTransform>());
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}
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}
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} |