EventTrigger with PointerClick event support.

Author: nubick

ButtonSoundsEditor/Assets/Plugins/ButtonSoundsEditor/ButtonClickSound.cs

@@ -1,17 +1,30 @@
-using UnityEngine;
+using System.Linq;
+using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.UI;
 
 namespace Assets.Plugins.ButtonSoundsEditor
 {
-    [RequireComponent(typeof(Button))]
     public class ButtonClickSound : MonoBehaviour
     {
         public AudioSource AudioSource;
         public AudioClip ClickSound;
 
         public void Awake()
         {
-            GetComponent<Button>().onClick.AddListener(PlayClickSound);
+            Button button = GetComponent<Button>();
+            if (button != null)
+            {
+                button.onClick.AddListener(PlayClickSound);
+            }
+
+            EventTrigger eventTrigger = GetComponent<EventTrigger>();
+            if (eventTrigger != null)
+            {
+                EventTrigger.Entry clickEntry = eventTrigger.triggers.SingleOrDefault(_ => _.eventID == EventTriggerType.PointerClick);
+                if (clickEntry != null)
+                    clickEntry.callback.AddListener(_ => PlayClickSound());
+            }
         }
 
         private void PlayClickSound()