Can't use UnityEngine.UI

Unity Engine
1 
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Health : MonoBehaviour
{

    Slider slider;

    // Start is called before the first frame update
    void Start()
    {
       slider.value = 1;
    }

    // Update is called once per frame
    void Update()
    {
        Debug.Log(slider.value);
    }
}

When I run the code this error is shown :

NullReferenceException: Object reference not set to an instance of an object
Health.Update () (at Assets/Test/Health.cs:20)

Slider and UI is underlined red.
I can’t seem to understand the problem here.
And UnityEngine.UIElements is shown in the dropdown list whereas UnityEngine.UI is not found.

Please Help.

2

Your NullReferenceException is because you haven’t assigned “slider” to anything. You need to either make it public and drag a Slider into that slot in Health’s inspector, or you can use GetComponent<> in Start to assign it.

Your red underlines and dropdown list is unrelated, and solely a Visual Studio issue. Try the steps given here to resolve that.

1 Like
3

Well, That solved the problem.
Thanks mate.

1 Like