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Question by mo3rta · Feb 06, 2016 at 08:41 PM · c#script.reference

Getting a null reference when trying to access one script from an other

Hello, i'm trying to access a script from an other script, but i keep ending up for a null-reference. I feel like I've read every forum post and check every code example, and it looks like i'm doing the same thing everybody else does, and still i end up with the null-reference. Here's an example code of what i'm trying to do.

 using UnityEngine;
 using System.Collections;
 
 public class Test : MonoBehaviour {
 
     public TestB pCont;
     // Use this for initialization
     void Start () {
        pCont = GetComponent<TestB>();
 
         if (pCont.numberOne != 1)
             Debug.LogWarning(pCont.numberOne);
         else
             Debug.LogWarning("Pcont is null");
     }
     
     // Update is called once per frame
     void Update () {
     
     }

The Test code is trying to access the "int numberOne" in TestB, but no matter what i do, i always go to the else "Debug.LogWarning("Pcont is null");" using UnityEngine; using System.Collections;

 public class TestB : MonoBehaviour {
 
     public int numberOne = 1;
     
     void Awake()
     {
 
     }
 
 }

Help would be greatly appreciated. MoerTa

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Answer by Ahndrakhul · Feb 06, 2016 at 09:40 PM

Your if statement is saying

if pCont.numberOne does not equal 1 then LogWarning pCont.numberOne

but according to your TestB class, numberOne does equal 1, which means that you will always go through to the else statement and get the "Pcont is null" warning

you would have to change

 if (pCont.numberOne != 1)

to

 if (pCont.numberOne == 1)

to get the pCont.numberOne warning.

is this the only null reference you are refering to?

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