Button Not working as intended(Solved)

Hello, I’m currently testing out some stuff but now I have a problem I can’t seem to figure out on my own
I’m new to programming and cannot see why this is happening.

When i run my program and click on the object it displays the ActionMenu, Here the build and exit buttons function normally. When I click on the build button i have the option to go to the next page but then the back buttons stops functioning even when i go back to the first page. This isn’t supposed to be happening and when i dont use it right away on the first page without first going to the second it does work. When i check in the inspector i say Missing(Button) but i have checked and it does actually find the button.
What have I done wrong?

Code (CSharp):

1.  
2. using UnityEngine;
3. using System.Collections;
4. using UnityEngine.UI;
5. using UnityEngine.EventSystems;
6.  
7. public class BuildPlatform : MonoBehaviour {
8.  
9.     bool isClicked = false;
10.     bool mouseInArea;
11.     public GameObject actionMenuPrefab;
12.     public GameObject actionMenu;
13.     public GameObject buildMenuP1Prefab;
14.     public GameObject buildMenuP1;
15.     public GameObject buildMenuP2Prefab;
16.     public GameObject buildMenuP2;
17.  
18.  
19.     public Button exitButton;
20.     public Button buildButton;
21.     public Button backButton;
22.     public Button nextPageButton;
23.     public Button previousPageButton;
24.  
25.     // Use this for initialization
26.     void Start () {
27.  
28.     }
29.  
30.     // Update is called once per frame
31.     void Update () {
32.         if (mouseInArea == true) {
33.             if (Input.GetMouseButtonDown(0)) {
34.                 SelectionMenu();
35.             }
36.         }
37.     }
38.  
39.     void OnMouseEnter() {
40.         mouseInArea = true;
41.     }
42.  
43.     void OnMouseExit() {
44.         mouseInArea = false;
45.     }
46.  
47.     private void SelectionMenu(){
48.         actionMenu = (GameObject)Instantiate (actionMenuPrefab);
49.         GameObject A = GameObject.Find("Exit");
50.         exitButton = A.GetComponent<Button> ();
51.         exitButton.onClick.AddListener(() => { ExitButton();});
52.         GameObject B = GameObject.Find ("Build");
53.         buildButton = B.GetComponent<Button> ();
54.         buildButton.onClick.AddListener(() => { BuildButton();});
55.     }
56.  
57.     void ExitButton(){
58.         Destroy (actionMenu);
59.     }
60.  
61.     void BuildButton(){
62.         Destroy (actionMenu);
63.         buildMenuP1 = (GameObject)Instantiate(buildMenuP1Prefab);
64.         GameObject B = GameObject.Find("Arrow Right");
65.         nextPageButton = B.GetComponent<Button> ();
66.         nextPageButton.onClick.AddListener (() => { NextPageButton();});
67.         GameObject A = GameObject.Find ("Back");
68.         backButton = A.GetComponent<Button> ();
69.         backButton.onClick.AddListener(() => { BackButton(buildMenuP1);});
70.     }
71.  
72.     void BackButton(GameObject CurrentPage) {
73.         Destroy (CurrentPage);
74.         SelectionMenu ();
75.     }
76.  
77.     void NextPageButton(){
78.         Destroy (buildMenuP1);
79.         buildMenuP2 = (GameObject)Instantiate (buildMenuP2Prefab);
80.         GameObject B = GameObject.Find ("Arrow Left");
81.         previousPageButton = B.GetComponent<Button> ();
82.         previousPageButton.onClick.AddListener (() => { PreviousPageButton();});
83.         GameObject C = GameObject.Find ("Back");
84.         backButton = C.GetComponent<Button> ();
85.         backButton.onClick.AddListener(() => { BackButton(buildMenuP2);});
86.     }
87.  
88.     void PreviousPageButton(){
89.         Destroy (buildMenuP2);
90.         backButton = null;
91.         BuildButton ();
92.     }
93. }
94.  

 

Greetings!

Your back button seems to stop working because it gets set to null in line 90 within the PreviousPageButton method. I guess you rather want to hide the button instead of nulling it.

 

Thanks for trying to help but hat was one of my attempts to fix it because after that i call the Buldbutton method and in there it should find it again at line 67.