Displaying a List or an Array in Editor file

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1

Hello everyone

I have a question about displaying a List or an Array
After creating a List, I can add, remove or assign List items.
The problem starts when I create the Custom Editor. I cannot assign a value to the list.

MonoBehaviour: RootTest.cs

using System.Collections.Generic;
using UnityEngine;
public class RootTest : MonoBehaviour
{
     [SerializeField] private List<GameObject> card = new List<GameObject>();
}

… and Editor: RootTestEditor.cs

using UnityEngine;
using UnityEditor;

[CustomEditor(typeof(RootTest))]
public class RootTestEditor : Editor
{
    private RootTest myTarget;
    private SerializedObject soTarget;
    private SerializedProperty card;

    public override void OnInspectorGUI()
    {
        myTarget = (RootTest)target;
        soTarget = new SerializedObject(target);
        card = soTarget.FindProperty("card");

        soTarget.Update();
        ExecuteMenu();
        soTarget.ApplyModifiedProperties();
    }

    private void ExecuteMenu()
    {
        EditorGUILayout.PropertyField(card, new GUIContent("Card"));
    }
}

I understand the problem is the Editor file which
does not refresh the values. And the new item cannot be assigned.

Does anyone know how to do it ?

2

One thing is that you should always start the OnInspectorGUI with serializedObject.Update().

Other thing is that you are doing unnecessary serializations. This way would be simpler…

private SerializedProperty card;

private void OnEnable()
{
    card = serializedObject.FindProperty("card");
}

public override void OnInspectorGUI()
{
    serializedObject.Update();
    EditorGUILayout.PropertyField(card, new GUIContent("ECard"));
    serializedObject.ApplyModifiedProperties();        
}

Other that above things I don’t see any problems