How to implement graphics settings in Unity3d? via UI Button?

Question

Unity

In the unit, I set 3 graphics levels Low, Normal, High and, accordingly, 3 UI Buttons.
Through the GUI it looks like this.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    void OnGUI() {
        string[] names = QualitySettings.names;
        GUILayout.BeginVertical();
        int i = 0;
        while (i < names.Length) {
            if (GUILayout.Button(names[i]))
                QualitySettings.SetQualityLevel(i, true);
            
            i++;
        }
        GUILayout.EndVertical();
    }
}

Well, I created a separate script and wrote public void QualitySettings.SetQualityLevel(1);
and threw it on the UI Button, but the button does not see it, tell me how to do it through Ui?

Answer 1

Button does not know how to call static methods, so to change graphics settings you need to write a wrapper:

using UnityEngine;

public class Test : MonoBehaviour
{
    public void SetQualityLevel(int index)
    {
        QualitySettings.SetQualityLevel(index, true);
    }
}

In the inspector it will look like this:

Answer 2

Download the latest version of unity and use ugui to do it there. Elements are created as game objects.