Question

我正在尝试在unity中创建一个可重新排序的列表，该列表存储了一个自定义类列表：

using System;
using UnityEngine;

[Serializable]
public struct OnboardingItemData
{
   [Tooltip("The hint gameobject")]
   public GameObject prefab;

   [Tooltip("The object this hint is highlighting")]
   public GameObject target;

}

这个类在列表中：

using System;
    using System.Collections.Generic;
    using UnityEngine;


    public class OnboardingItemList : MonoBehaviour
    {
    public List<OnboardingItemData> list = new List<OnboardingItemData>();

    private void Update()
    {
        Debug.Log("List count: " + list.Count);
    }

    public void Refresh()
    {
        for (int i=0; i < list.Count; i++)
        {
            if (list[i].prefab != null)
            {
                list[i].prefab.GetComponent<OnboardingItemClickHandler>().id = 
                i;
            }
        }
    }

    public virtual void Show(int id)
    {
        Debug.Log(list.Count);
        list[id].prefab.SetActive(true);
    }

    public virtual void Hide(int id)
    {
        list[id].prefab.SetActive(false);
    }
    }

此列表如下所示：

using UnityEngine;
using UnityEditor;
using UnityEditorInternal;

[CustomEditor(typeof(OnboardingItemList))]
public class OnboardingEditor : Editor
{
private ReorderableList list;

private void OnEnable()
{
    list = new ReorderableList(serializedObject,
            serializedObject.FindProperty("list"),
            true, true, true, true);
    list.drawElementCallback =
        (Rect rect, int index, bool isActive, bool isFocused) => {
            var element = 
                      list.serializedProperty.GetArrayElementAtIndex(index);
            rect.y += 2;
            EditorGUI.PropertyField(
                new Rect(rect.x, rect.y, 200, 
                EditorGUIUtility.singleLineHeight),
                element.FindPropertyRelative("prefab"), GUIContent.none);
            EditorGUI.PropertyField(
                new Rect(rect.x + 250, rect.y, 200, 
                EditorGUIUtility.singleLineHeight),
                element.FindPropertyRelative("target"), GUIContent.none);
        };
}

public override void OnInspectorGUI()
{
    list.DoLayoutList();
    serializedObject.ApplyModifiedProperties();
    OnboardingItemList myScript = (OnboardingItemList)target;
    if (GUILayout.Button("Apply"))
    {
        myScript.Refresh();
    }
}
}

现在，在我的场景中，有一些UI元素在OnboardingItemList上调用Show（）和Hide（）函数。问题是我得到一个超出范围的异常，所以我在Update（）中放了一个Debug.Log，我看到列表的计数不断变化。一帧表示2，下一帧0，它不断来回变换。我假设有些东西会不断将列表重置为新列表，编辑器会继续为其分配自定义编辑器的值。怎么能修好？

自定义编辑器重置每个帧的列表

0 个答案: