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Question by mesengun · May 27, 2015 at 10:21 AM · buttonnullreferenceexceptionsliderpanelenabled

Enabling/Disabling a slider from script

Hi all,

I have two sliders as a child of a panel(initially disabled within the inspector). What I want is that when I click on a button, I want this panel visible with sliders and when I click the button again I want the panel disappear and goes like this.

GameObject panel;

void Start(){

     panel = GameObject.FindGameObjectWithTag("sunPan");

     if (panel.activeSelf)
     {
         panel.SetActive(false);
     }
     else
     {
         panel.SetActive(true);            
     }

}

I added this script to my button. When I run the project I getting following error:

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

Is there a way of handling this error?

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avatar image Mehul-Rughani · May 27, 2015 at 10:33 AM 0
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add a collider to that button and add one method On$$anonymous$$ouseDown in it...

for example

  GameObject panel;
      
      void Start()
      {
         panel = GameObject.FindGameObjectWithTag("sunPan");
      }
      
      void On$$anonymous$$ouseDown()
      {
           if (panel.activeSelf)
           {
               panel.SetActive(false);
           }
           else
           {
               panel.SetActive(true);            
           }
      }
      
  
  

Hope it helps You... :)

avatar image Mehul-Rughani · May 27, 2015 at 10:36 AM 0
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This is temp solution for more you have to refer Unity UI Buttons if you are using unity UI

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