1 private SearchField _searchField;
 2 private string _searchText;
 3 private ReorderableList _choicesList;
 4 private List<string> _allListItems;
 5 
 6 public override void OnInspectorGUI()
 7 {
 8     if (null == _searchField) 
 9         _searchField = new SearchField();
10     var newText = _searchField.OnToolbarGUI(_searchText, new UnityEngine.GUILayoutOption[0]);
11     if (newText != _searchText)
12     {
13         _searchText = newText;
14         if (null != _allListItems)
15             _allListItems.Clear();
16         if (!string.IsNullOrEmpty(_searchText))
17         {
18             if (null == _allListItems) _allListItems = new List<string>();
19             for (var i = 0; i < 10; ++i)
20                 _allListItems.Add("" + i);
21             CreateListView();
22         }
23     }
24     if (null != _allListItems && _allListItems.Count > 0 && _choicesList != null) 
25         _choicesList.DoLayoutList();
26 }
27 
28 void CreateListView()
29 {
30     if (null != _choicesList) return;
31     
32     _choicesList = new ReorderableList(_allListItems, typeof(string), false, false, false, false);
33     _choicesList.drawElementCallback = (rect, index, active, focused) =>
34     {
35         rect.y += 2;
36         var half = rect.width / 2;
37         EditorGUI.LabelField(new UnityEngine.Rect(rect.x, rect.y, half, EditorGUIUtility.singleLineHeight), "index:" + index);
38         EditorGUI.LabelField(new UnityEngine.Rect(rect.x + half, rect.y, half, EditorGUIUtility.singleLineHeight), _allListItems[index]);
39     };
40 
41     _choicesList.onSelectCallback = (list) =>
42     {
43         _choicesList = null;
44         _searchText = null;
45     };
46 }

效果：