PoetryTour/Assets/Scripts/AppLauncher.cs

using System.Collections;
using System.Collections.Generic;
using Mono;
using UnityEngine;

public class AppLauncher : MonoBehaviour
{
    private bool _isStart;

    void Start()
    {
        GameObject prefab = Resources.Load<GameObject>("Canvas");

        GameObject _gameObject = GameObject.Instantiate(prefab);
        UIManager.Instance.SetUIRoot(_gameObject);


        ConfigComponent.Instance.Preload();
        _isStart = true;
        _timer = 0;
    }

    private float _timer;

    // Update is called once per frame
    void Update()
    {
        if (_isStart)
        {
            _timer += Time.deltaTime;
            if (_timer >= 15)
            {
                UIManager.Instance.LoadAndOpenPanel<StartPanel>(UIManager.UILayer.Middle);
                _isStart = false;
                _timer = 0;
            }
        }
    }
}