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Question by RafaelCN · May 02, 2013 at 10:37 PM · guitexturebutton

Null reference exception[SOLVED]

Hi everyone, i had an error:

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

I was trying to put an image to a button, like this:

  public Texture[]  buttonTxt        = new Texture[10];
     
 void OnGUI() {   
 if(createButtonT(50, 50, 100, 30, buttonTxt[0], style)) {
                     
                 }
 }

he throws a exception as you can see, but i've looking for the answer for my question and i didn't found a case like the mine. My cretaButtonT() is a method that creates a button with a texture, seated on other script:

 public bool createButtonT(float left, float top, float width, float height, Texture content, GUIStyle style) {
         return     GUI.Button(new Rect((screenX-screenX)+left, (screenY-screenY)+top, width, height), content, style);
     }
     

Thanks for who will help me =)

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avatar image hoy_smallfry · May 02, 2013 at 11:11 PM 0
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We have no idea where your NullReferenceException is coming from, can you show us which line its referring to?

avatar image hoy_smallfry · May 02, 2013 at 11:21 PM 1
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With what you've given, my vague guess is that buttonTxt[0] is null because you have not initialized it. the line public Texture[] buttonTxt = new Texture[10]; creates an array, but it does not fill it with valid content.

avatar image RafaelCN · May 02, 2013 at 11:45 PM 0
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how can i fill with valid content? I've filled in inspector of the Unity editor. Well the null reference entire error is here:

NullReferenceException: Object reference not set to an instance of an object UnityEngine.GUI.Button (Rect position, UnityEngine.GUIContent content, UnityEngine.GUIStyle style) (at C:/BuildAgent/work/14194e8ce88cdf47/Runtime/ExportGenerated/Editor/GUI.cs:248) UnityEngine.GUI.Button (Rect position, UnityEngine.Texture image, UnityEngine.GUIStyle style) (at C:/BuildAgent/work/14194e8ce88cdf47/Runtime/ExportGenerated/Editor/GUI.cs:225) mainClass.createButtonT (Single left, Single top, Single width, Single height, UnityEngine.Texture content, UnityEngine.GUIStyle style) (at Assets/_gameAssets/_scripts/mainClass.cs:53) clarinete.OnGUI () (at Assets/_gameAssets/_scripts/clarinete.cs:28)

avatar image RafaelCN · May 03, 2013 at 03:55 AM 0
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i'd solved, the problem was on the declaration of an GUIStyle, where the GUIStyle has to be public!

avatar image ExTheSea · May 03, 2013 at 03:41 PM 0
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If you solved your problem please clos the question.

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Answer by GoGamingJoe · May 24, 2014 at 04:37 PM

For Me It Was Because It Was Static

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