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Question by relativ · Sep 19, 2016 at 08:20 PM · c#errorreference

Object reference error

Hi, I'm getting this error with this script:

NullReferenceException: Object reference not set to an instance of an object WorldUI.Start () (at Assets/scripts/WorldUI.cs:17)

I've read, tha this occurs, if The calss Buildings doesn't contain MenuIcon, but as you can see, the script includes sthis.

WorldUI:

 using UnityEngine;
 using System.Collections;
 
 public class WorldUI : MonoBehaviour {
 
     
     void Start () {
         
         string path = "Buildings/";
 
         Object[] Buildings = Resources.LoadAll(path);
 
         if(Buildings.Length > 0) {
             for(int i =0; i < Buildings.Length; i++)
             {
                 GameObject build = Buildings[i] as GameObject;
                 Texture2D Icon = build.GetComponent<Building>().MenuIcon;  =====LINE 17=====
              //   Texture2D IconRo = build.GetComponent<Building>().MenuIconRo;
              //     Debug.Log(Buildings[i]);
                 MenuSetup.UnitIconTextures.Add(Icon);
              //     MenuSetup.UnitIconTexturesRo.Add(Icon);
                 MenuSetup.UnitNames.Add(build.name);
                 MenuSetup.UnitPaths.Add(path+"/"+build.name);
             }
         }
 
     }
 }
 

Building

 using UnityEngine;
 using System.Collections;
 public class Building : MonoBehaviour {   
     public Vector2 ScreenPos;
     public bool OnScreen;
     public float team; // 0 = spieler; 1 = gegner
     public bool Selected = false;
     public float HP = 100f;
     public float Reload = 10f;
     public float Range = 40f;
     public bool Alive = true;
     public bool Selectable = true;
     public Texture2D MenuIcon;   ======HERE=======
     public Texture2D MenuIconRo;
 }

I hope you can help me here

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avatar image Namey5 · Sep 20, 2016 at 07:35 AM 0
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Well, I'm assu$$anonymous$$g that you have a physical instance of the Building class, but you still have to assign a menu icon to that class variable in the inspector/through code. Simply declaring a variable will not give it a value.

avatar image relativ Namey5 · Sep 20, 2016 at 09:47 AM 0
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Yep, I did that already, forgot to upload a picture of the Inspector. The image however is set there

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Answer by relativ · Sep 20, 2016 at 09:56 AM

Geez....The problem was; the Pictures were Sprites, not GUI Textures ._.

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