Question Button OnClick has the empty list after Button create script running.

I can manually add OnClick listener to the button on Unity Editor and it works well.
I now need to do this programatically.

Below is my test code.
After running this, I see it created "MyButton" GameObject and a Button component inside.
Also it found the existing "MyScript" component.
But it has the empty list of "On Click()" at Button component on Unity Editor.
I followed this instruction.
How can I add On Click listener from the script?

Code (CSharp):

1. using UnityEngine;
2. using UnityEditor;
3.  
4. public class TestEditor : Editor
5. {
6.     [MenuItem("Edit/Test")]
7.     private static void Test()
8.     {
9.         GameObject buttonObject = new GameObject("MyButton");
10.         var button = buttonObject.AddComponent<UnityEngine.UI.Button>();
11.  
12.         var script = GameObject.Find("ObjWithScript").GetComponent<MyScript>();
13.         button.onClick.AddListener(() => script.ButtonClicked());
14.         button.onClick.AddListener(delegate {script.ButtonClicked();});
15.         button.onClick.AddListener(script.ButtonClicked);
16.     }
17. }

 

have you tried setting the scene dirty after setting the listener?

 

I tried below after setting the listener and still see the empty listener.

Code (CSharp):

1.         EditorUtility.SetDirty(button);
2.         EditorUtility.SetDirty(buttonObject);
3.         EditorApplication.MarkSceneDirty();

 

You need to use the following editor methods if you want them to be persistant: https://docs.unity3d.com/ScriptReference/Events.UnityEventTools.html

Note this is available in the editor only.

 

Editor methods resolved the problem!
Thank you so much!!