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Recently I've been creating a game, and I've been creating a Menu. At the beginning the player opens the Menu and enters a name into a UI Text Field, which I will convert to a string, so the player may be called that name throughout the storyline.

I've come across another Script on this website:

using UnityEngine;
using UnityEngine.UI;
using System.Collections;

public class GUIFieldTest : MonoBehaviour {

    public GameObject playerName;

    public void Start ()
    {
        var input = gameObject.GetComponent<InputField>();
        var se = new InputField.SubmitEvent();
        se.AddListener(SubmitName);
        input.onEndEdit.AddListener(SubmitName);

        //or simply use the line below,
        //input.onEndEdit = se;  // This also works
    }

    private void SubmitName(string arg0)
    {
        Debug.Log(arg0);
    }
}

I have tweaked this code so I can include a prefab of the Text Field as a GameObject, however I have recieved an error saying:

NullReferenceException: Object reference not set to an instance of an object GUIFieldTest.Start () (at Assets/Scripts/GUIFieldTest.cs:13)

I understand that this error means that there is nothing assigned, and I understand how to fix the NullReferenceException. I am able to run the game, however the game freezes and the text field is not clickable. You cannot enter any text.

I know this is a very simple question, but it would be great for an explanation.

Matt O'Connell
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    I am not really familiar with Unity, but I know that a `NullReferenceException` means you are trying to access a member on an objec that is `Null` – Noémie Lord Aug 11 '16 at 11:36

1 Answers1

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var input = gameObject.GetComponent<InputField>() should be 

var input = playerName.GetComponent<InputField>().

When you use gameObject.GetComponent, it will only find components on the GameObject the script is attached to.

I assume that your InputField GameOBject is the playerName variable.

If this is not true the do var input = GameObject.Find("YourInputFieldGameOBject").GetComponent<InputField>().

Programmer
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