[Help] Toggle - ison?

Hello,

I am using Unity4.6. I would like to check value of the Toggle is true/false. I get error on "tog.isOn":

//Using c#:
usingUnityEngine;
usingSystem.Collections;
usingUnityEngine.UI;

voidStart()
{
Toggle tog = GetComponentInChildren<Toggle>();

if (tog.isOn) {
Debug.Log ("Hello");
tog.isOn = false;
}
}

----
Display error message
Error:
NullReferenceException: Object reference not set to an instance of an object
VolumeOn.Start () (at Assets/JackScript/VolumeOn.cs:21)

Please advice.

Thank you for your help,
April

 

That would indicate that GetComponentInChildren doesn't actually find the component and therefore is set to NULL. Try to: Debug.Log(tog); to see if it set to something or if it's NULL.

 

I got error on “tog.isOn = true;”

Toggle tog = GetComponentInChildren<Toggle>();
Debug.Log (tog); // Display Null

// Display error message: Object reference not set to an instance of an object
tog.isOn = true;

 

That means that Unity can't find a "Toggle" component in the GameObject, nor in any of its childs. Is the component really there? Is it active? GetComonentInChildren only returns active components.

 

Thank you for your respong. I am trying to find value of “Is On”. Please refer to attachment image.
I made following changes and display “False” value.
// C# code:
bool toggle = GetComponent<UnityEngine.UI.Toggle>();
Debug.Log ("toggle: " + toggle); // Display “False”

toggle.isOn = false; // Display error message

 

Try something like this:

Code (CSharp):

1. Toggle tog = GameObject.Find("Sound Toggle").GetComponent<Toggle>();
2.  

 

Display error message:

// NullReferenceException: Object reference not set to an instance of an object
publicToggletoggle;
voidStart()
{
Toggle tog = GameObject.Find("Sound Toggle").GetComponent<Toggle>();

 

Thank you PHJ, I modify the program and it is working. -Aprial