How to show a custom UnityEvent in custom class to custom Editor

Questions & Answers
1

code like this

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEditor;

public class ExampleScript : MonoBehaviour {
    [System.Serializable]
    public class abc
    {
        [SerializeField]
        public UnityEvent testEvent;
        public bool invoked;
    }
    public abc[] custom_class_array;
}

namespace UnityStandardAssets.Utility.Inspector
{
#if UNITY_EDITOR
    [CustomEditor(typeof(ExampleScript))]
    public class ExampleSciptEditor : Editor
    {
        public override void OnInspectorGUI()
        {
            ExampleScript myscript = (ExampleScript)target;
            for (int i = 0; i < myscript.custom_class_array.Length; i++)
            {
                SerializedProperty p = serializedObject.FindProperty("testEvent").GetArrayElementAtIndex(i);
                EditorGUILayout.PropertyField(p, true);
                serializedObject.ApplyModifiedProperties();
            }
        }
    }
#endif
}

And return null , that mean unity can’t find it?
I find lot of method that only call from Behavior Script .
THX

2

did you find an answer to this?