Can't edit list elements in CustomEditor or CustomWindow

Been trying to create a Custom Editor for a scriptable object with lists. The new Unity system uses reorderable lists that, for some reason, don't allow to modify the list's element values in a custom editor.

1. Can add a specific item to the list but by dragging it to the list name
2. adding the [NoReorderable] Property to the list fix the issue but, well, you lose the reorderable property

I've tried to make my own Reorderable List but had the same issue. Any clues? documentation is still lacking.

The class, you can try changing Inheritance to Sxriptable Object and using the commented code.

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4.  
5. [CreateAssetMenu(menuName = "Sample/List Scriptable")]
6. [SerializeField]
7. public class MyScriptableList : MonoBehaviour
8. {
9.     public List<GameObject> objects;
10. }
11.  

The Editor

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEditor;
5.  
6.  
7. [CustomEditor(typeof(MyScriptableList))]
8. public class MyEditor : Editor
9. {
10.     private void OnEnable()
11.     {
12.        
13.     }
14.  
15.     public override void OnInspectorGUI()
16.     {
17.         /*
18.          // Can't change value of elements neither in Monobehaviour or ScriptableObjects
19.          // Can add element by draging it to the list title in Monobehaviour but not in ScriptableObject
20.         var e = CreateEditor(target);
21.         e.DrawDefaultInspector();
22.         */
23.  
24.         // Cant' interact with ScriptableObject
25.         //Works fine in Monobehaviour
26.         base.OnInspectorGUI();
27.  
28.  
29.         GUILayout.Label("Drawing MyEditor");
30.     }
31. }
32.  

The Window

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEditor;
5.  
6. public class MyWindow : EditorWindow
7. {
8.     static MyScriptableList scriptable;
9.  
10.     [MenuItem("Window/MyWindow")]
11.     public static void ShowWindow()
12.     {
13.         var window = EditorWindow.GetWindow<MyWindow>();
14.         //scriptable = ScriptableObject.CreateInstance<MyScriptableList>(); //-> for Scritpable
15.  
16.        
17.         //for Monobehaviour
18.         var g = new GameObject();
19.         g.AddComponent<MyScriptableList>();
20.         scriptable = g.GetComponent<MyScriptableList>();
21.        
22.     }
23.  
24.     private void OnGUI()
25.     {
26.         var e = Editor.CreateEditor(scriptable);
27.  
28.  
29.         // Can't change value of elements neither in Monobehaviour or ScriptableObjects
30.         // Can add element by draging it to the list title in Monobehaviour and in ScriptableObject
31.         e.OnInspectorGUI();
32.  
33.  
34.         /*
35.         // Can't change value of elements neither in Monobehaviour or ScriptableObjects
36.         // Can add element by draging it to the list title in Monobehaviour and in ScriptableObject
37.         e.DrawDefaultInspector();
38.         */
39.     }
40. }
41.  

 

I also experience the same issue with an editor tool that allows merging materials into a texture array container for multi-material blending. It also is an editor window where the default inspector is drawn for a scriptable object containing lists.

EDIT: Adding [NonReorderable] to the arrays and lists also fixes them but they lose the reordering feature. I think the scriptable objects are preventing the reordering as it was added with version 2021

 

holy S*** thank you. this fixed a lot of broken inspectors for our project after upgrading to 2021