Using a Unity button to switch between scenes.

Create two scenes

• Create a new Unity3D project
• Save the current scene (CTRL-S) as main
• Create a new scene in the Project view and name it menu
• Create a C# script and name it SceneSwitcher

Your Project window should look like this:

Change script to open scenes

• Doubleclick SceneSwitcher to open in Visual Studio
• Create public methods GotoMainScene and GotoMenuScene

Your code should look like this:

using UnityEngine;
using UnityEngine.SceneManagement;

public class SceneSwitcher : MonoBehaviour
{
public void GotoMainScene()
{
SceneManager.LoadScene("main");
}

public void GotoMenuScene()
{
SceneManager.LoadScene("menu");
}
}

Create buttons to trigger the script

• Open scene menu by doubleclicking it
• In the hierarchy window click Create > UI > Button

• Expand Canvas > Button > Text
• Change text to Start game

• In the hierarchy window, choose Create > Create Empty
• Rename the new emtpty GameObject to GameController
• Drag the SceneSwitcher script to GameController

• Select the button and find the On Click event in the inspector
• Select Edit and Runtime
• Click the little circle next to None (Object) and select GameController
• Select SceneSwitcher > GotoMainScene

Repeat creating a button to go to menu scene

• Open scene main by doubleclicking it
• In the hierarchy window click Create > UI > Button
• Expand Canvas > Button > Text
• Change text to Menu
• In the hierarchy window, choose Create > Create Empty
• Rename the new emtpty GameObject to GameController
• Drag the SceneSwitcher script to GameController
• Select the button and find the On Click event in the inspector
• Select Edit and Runtime
• Click the little circle next to None (Object) and select GameController
• Select SceneSwitcher > GotoMenuScene