set active not working

HI,

I wrote a code where in the start function I disabled a gameobject with: setactive(false)
and In another function I wrote: setactive(true)
both functions is on a game manager object I mean its not on the inactive object
I read on another threads that the reason is because of the garbage collector
but I have reference in the game manager object to that object
this is the code:

Code (CSharp):

1. void Start ()
2.     {
3.         ui.SetActive(false);
4.         scoreText.text = PlayerPrefs.GetInt("Score").ToString();
5.     }
6.  
7. public void displayUI()
8.     {
9.         ui.SetActive(true);
10.     }

 

How are you calling displayUI?

How is your reference to ui set? Drag and drop inspector?
Is the SetActive(false) working?

 

the SetActive(false) is working
and yes I reference with drag and drop
and i calling the function with get component and it gives me this:
NullReferenceException: Object reference not set to an instance of an object

 

So you have a reference error on the code that calls displayUI?

I'll have to see more to understand why it's null, but basically when you go to call displayUI, it's not getting the script that this method is on (You mention a GameManager) which is why displayUI never runs.