One of my scripts has no check-box next to it in Inspector

Question

I have created an empty gameobject and dragged four scripts onto it to control various things. One of them has no check-box next to it in the inspector and one of the others isn't being instantiated properly, meaning I'm getting an error:

NullReferenceException: Object reference not set to an instance of an object

I am referencing them like this:

public class DataLayer : MonoBehaviour { private Configs configOb; private PageLoader pl;

void Start() { configOb = (Configs)gameObject.GetComponent(typeof(Configs)); //configOb = new Configs(); //pl = new PageLoader(); pl = (PageLoader)gameObject.GetComponent(typeof(PageLoader)); }

public ArrayList getTopApps() { ArrayList titleArray = new ArrayList(); string fetchUrl = configOb.getRoot()+"TopTen.php";

When I test this code it fails at the bottom line because the configOb is null.

Answer 1

Best Answer

Answer by runevision · Nov 18, 2009 at 01:49 PM

Your MonoBehaviour won't have a checkbox next to it in the inspector if it doesn't have any of the per-frame methods, like Update, FixedUpdate, OnGUI, etc.

I can't tell you why your configOb variable isn't being set properly. It may be due to something outside of the script you posted.

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Ben Gannaway · Nov 18, 2009 at 03:29 PM 0

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Ok, thanks. I can't figure out why it wont initiate my scripts

yadoa · Nov 28, 2012 at 08:57 AM 0

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thank you.

Answer 2

Answer by Jormungandr · Nov 18, 2009 at 06:11 PM

Is getTopApps() called by another script's Start() method? If so, it may be running before DataLayer.Start() is.

The convention I usually follow to avoid this is to put all reference assignment (GetComponent, Find, etc) in Awake, while startup functionality that relies on such references always goes in Start.

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One of my scripts has no check-box next to it in Inspector

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