Different Buttons, in the same scene, have the same InstanceID

Hi,

I have an issue where different Buttons have the same InstanceID.

In my scene (PlayerSettingsMenu) I have a Canvas containing PlayerPanes (Panel). In the scene there are four PlayerPanels (PlayerPanelOne, PlayerPanelTwo, PlayerPanelThree & PlayerPanelFour).

Here is the script (PlayerSettingsMenuManager) in charge of the Panels:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 using UnityEngine.EventSystems;
 using System.Collections.Generic;
 
 public class PlayerSettingsMenuManager : MonoBehaviour
 {
 
     private PlayerPanel playerPanelOne;
     private PlayerPanel playerPanelTwo;
     private PlayerPanel playerPanelThree;
     private PlayerPanel playerPanelFour;
 
     // 
     void Awake ()
     {}
 
     // Use this for initialization
     void Start()
     {
         initialize();
     }
 
     // Update is called once per frame
     void Update () { }
 
     /// <summary>
     /// Changes game scene. Uses scene indices.
     /// </summary>
     /// <param name="sceneIndex">Index of the scene to change to.</param>
     public void changeToScene(int sceneIndex)
     {
         Application.LoadLevel(sceneIndex);
     }
 
     /// <summary>
     /// Changes game scene. Uses scene name.
     /// </summary>
     /// <param name="sceneName">Name of the scene to change to.</param>
     public void changeToScene(string sceneName)
     {
         Application.LoadLevel(sceneName);
     }
 
     private void initialize()
     {
         playerPanelOne = new PlayerPanel(GameObject.Find("PlayerPanelOne"));
         if (null != playerPanelOne)
         {
             //playerPanelOne.SetActive(false);
             playerPanelOne.SetAsFirstSibling();
         }
 
         playerPanelTwo = new PlayerPanel(GameObject.Find("PlayerPanelTwo"));
         if (null != playerPanelTwo)
         {
             //playerPanelTwo.SetActive(false);
             playerPanelTwo.SetAsFirstSibling();
         }
 
         playerPanelThree = new PlayerPanel(GameObject.Find("PlayerPanelThree"));
         if (null != playerPanelThree)
         {
             //playerPanelThree.SetActive(false);
             playerPanelThree.SetAsFirstSibling();
         }
 
         playerPanelFour = new PlayerPanel(GameObject.Find("PlayerPanelFour"));
         if (null != playerPanelFour)
         {
             //playerPanelFour.SetActive(false);
             playerPanelFour.SetAsFirstSibling();
         }
     }
 }
 

Here is the PlayerPanel class:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class PlayerPanel {
 
     // Names of PlayerPanel GameObjects.
     public static readonly string PLAYERPANEL_GAMEPAD_BUTTON = "GamepadButton";
     public static readonly string PLAYERPANEL_KEYBOARD_BUTTON = "KeyboardButton";
 
     private GameObject panel;
     private GameObject gamepadButton;
     private GameObject keyboardButton;
 
     public PlayerPanel(GameObject gameObject)
     {
         this.panel = gameObject;
         Debug.Log("Panel Name: " + this.panel.name + ", Panel InstanceID: " + this.panel.transform.GetInstanceID());
 
         // Find PlayerPanel Buttons.
         keyboardButton = GameObject.Find(PLAYERPANEL_KEYBOARD_BUTTON);
         gamepadButton = GameObject.Find(PLAYERPANEL_GAMEPAD_BUTTON);
 
         this.reset();
     }
 
     /*******************
     * Properties
     ********************/
     public GameObject Panel
     {
         get { return panel; }
     }
 
     /*******************
     * Public Methods
     ********************/
     public void SetActive(bool value)
     {
         panel.SetActive(value);
     }
 
     public void SetAsFirstSibling()
     {
         panel.transform.SetAsFirstSibling();
     }
 
     public void SetAsLastSibling()
     {
         panel.transform.SetAsLastSibling();
     }
 
     public void reset()
     {
         if (null != gamepadButton)
         {
             Debug.Log("Gamepad GameObject Name: " + gamepadButton.name + ", Gamepad GameObject InstanceID: " + gamepadButton.transform.GetInstanceID());
 
             Button button = gamepadButton.GetComponent<Button>();
             Debug.Log("Gamepad Button Name: " + button.name + ", Gamepad Button InstanceID: " + button.transform.GetInstanceID());
 
             // Disabel PLAYERPANEL_GAMEPAD_BUTTON and set disable color.
             Text text = button.GetComponentInChildren<Text>();
             Debug.Log("Gamepad Button Text Name: " + text.name + ", Gamepad Button Text InstanceID: " + text.transform.GetInstanceID());
             text.color = GameColors.BUTTON_DISABLED_TEXT_COLOR;
             //gamepadButton.GetComponent<Button>().enabled = false;
             button.interactable = false;
         }
     }
 }    

In each Panel there is a GamepadButton. At the start of the scene all the GamepadButtons should be disabled. This is done in the PlayerPanel constructor which is calling the reset()-method.

Now my problem is that only one of the GamepadButtons gets disabled. Not the others (see picture).

I added some prints in the PlayerPanel-constructor and in the reset()-method. I print the name and InstanceID of each Panel, GamepadButton-GameObject, GamepadButton-Button & GamepadButton-text. Each of the four PlayerPanels had different InstanceID, but to my surprice each GamepadButton-GameObject, GamepadButton-Button & GamepadButton-text had the same InstanceID in each panel. That, to me, indicates that they all are the same instance/object. How can that be?

Here is the printout from the PlayerPanels:

 Panel Name: PlayerPanelOne, Panel InstanceID: 7648
 Gamepad GameObject Name: GamepadButton, Gamepad GameObject InstanceID: -2210
 Gamepad Button Name: GamepadButton, Gamepad Button InstanceID: -2210
 Gamepad Button Text Name: Text, Gamepad Button Text InstanceID: -2232
 
 Panel Name: PlayerPanelTwo, Panel InstanceID: 7652
 Gamepad GameObject Name: GamepadButton, Gamepad GameObject InstanceID: -2210
 Gamepad Button Name: GamepadButton, Gamepad Button InstanceID: -2210
 Gamepad Button Text Name: Text, Gamepad Button Text InstanceID: -2232
 
 Panel Name: PlayerPanelThree, Panel InstanceID: 7774
 Gamepad GameObject Name: GamepadButton, Gamepad GameObject InstanceID: -2210
 Gamepad Button Name: GamepadButton, Gamepad Button InstanceID: -2210
 Gamepad Button Text Name: Text, Gamepad Button Text InstanceID: -2232
 
 Panel Name: PlayerPanelFour, Panel InstanceID: 7622
 Gamepad GameObject Name: GamepadButton, Gamepad GameObject InstanceID: -2210
 Gamepad Button Name: GamepadButton, Gamepad Button InstanceID: -2210
 Gamepad Button Text Name: Text, Gamepad Button Text InstanceID: -2232
 

It puzzles me that the InstanceIDs are negative. Something is fishy here. :-)