Button gives NullRefranse..

I looked this up and down now and i can't figure it out.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class Buttoncontroller : MonoBehaviour {

public Button numInc, numDec;
private int age;
public Text ageCount;

// Use this for initialization

void Start () {
Button btn1 = numInc.GetComponent<Button>();
btn1.onClick.AddListener(TaskonClickInc);

Button btn2 = numDec.GetComponent<Button>(); //Line 24
btn2.onClick.AddListener(TaskonClickDec);
}

// Update is called once per frame
void Update () {

if (age <= 0 )
{
age = 14;
}
ageCount.text = ""+ age;
}

void TaskonClickInc()
{
if (age >= 40)
{
age = 40;
}
else if (age <= 39)
{
age ++;
Debug.Log("AgeIncreased");
}
}
void TaskonClickDec()
{
if (age >= 15)
{
age --;
}
else if (age <= 14)
{
age = 14;
}
Debug.Log("AgeDecreased");
}

}


The first Button (Btn1) works fine but the Btn2 gives:

NullReferenceException: Object reference not set to an instance of an object
Buttoncontroller.Start () (at Assets/Script/UI/Buttoncontroller.cs:24)

I have also assigned them in the unity engine so thats not the problem either. It's probably simple i am just new to this.

 

Are you sure that you've assigned everything correctly? Because your code works for me. Tested it and there were no errors showing. It increases and decreases the number as intended...

 

Post code using code tags. Your issue is numDec is null. I also don't understand why you are calling numDec.GetComponent<Button>() when numDec is already a Button reference, and the same with numInc a few lines up.

 

Thank you both. When i tried again now, after several hours...it suddenly , magically worked...no errors showed up and now changes had been made. sometimes i think the program is getting old and ill remember the codetag, thanks joe.