Question Beginner in UI ToolKit - Sample ListView

Hi,

I would to make a listView, but I can't add Label like in the example.
I mean, the numbers doesn't show in the window and in the debugger only Hello world.

Code (CSharp):

1. using UnityEditor;
2. using UnityEngine;
3. using UnityEngine.UIElements;
4. using System.Collections.Generic;
5. using System;
6.  
7.  
8. public class hip : EditorWindow
9. {
10.     [MenuItem("testo/hip")]
11.     public static void ShowExample()
12.     {
13.         hip wnd = GetWindow<hip>();
14.         wnd.titleContent = new GUIContent("hip");
15.     }
16.  
17.     public void CreateGUI()
18.     {
19.         var visualTree = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>("Assets/Editor/hip.uxml");
20.         VisualElement labelFromUXML = visualTree.Instantiate();
21.         rootVisualElement.Add(labelFromUXML);
22.  
23.         createListView();
24.     }
25.  
26.     void createListView()
27.     {
28.  
29.         // Create some list of data, here simply numbers in interval [1, 1000]
30.         const int itemCount = 1000;
31.         var items = new List<string>(itemCount);
32.         for (int i = 1; i <= itemCount; i++)
33.             items.Add(i.ToString());
34.  
35.         Func<VisualElement> makeItem = () => new Label();
36.         Action<VisualElement, int> bindItem = (e, i) => (e as Label).text = items[i];
37.  
38.         ListView listView = rootVisualElement.Q<ListView>(className: "the-uxml-listview");
39.         //var listView = rootVisualElement.Q<ListView>();
40.         listView.makeItem = makeItem;
41.         listView.bindItem = bindItem;
42.         listView.itemsSource = items;
43.         listView.selectionType = SelectionType.Multiple;
44.        
45.         // Callback invoked when the user double clicks an item
46.         listView.onItemsChosen += Debug.Log;
47.  
48.         // Callback invoked when the user changes the selection inside the ListView
49.         listView.onSelectionChange += Debug.Log;
50.  
51.     }
52. }

Code (CSharp):

1. <?xml version="1.0" encoding="utf-8"?>
2. <engine:UXML
3.     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
4.     xmlns:engine="UnityEngine.UIElements"
5.     xmlns:editor="UnityEditor.UIElements"
6.     xsi:noNamespaceSchemaLocation="../../UIElementsSchema/UIElements.xsd"
7. >
8.     <engine:Label text="Hello World! From UXML" />
9.     <engine:ListView class="the-uxml-listview" />
10. </engine:UXML>

Code (CSharp):

1. Label {
2.     font-size: 20px;
3.     -unity-font-style: bold;
4.     color: rgb(68, 138, 255);
5. }
6. .the-uxml-listview {
7.     /* Provide the list view with an explict height for every row
8.     so it can calculate how many items to actually display */
9.     --unity-item-height: 16;
10.     height: 200px;
11. }

 

Sorry, Close the post, I move it.