NewN_UAVPlane/Assets/Zion/Scripts/Adam/Components/SceneLoad.cs

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

public class SceneLoad : MonoSingleton<SceneLoad>
{
    public GameObject loadingPanel;

    public Slider loadSlider;

    public Text loadingInfoText;

    private void Start()
    {
        loadingPanel.SetActive(false);
    }
    public void SceneChange(string Scenename)
    {
        Debug.Log("Scenename---" + Scenename);
        StartCoroutine(LoadScene(Scenename));
    }
    private IEnumerator LoadScene(string loadSceneName)
    //ÉèÖÃЭ³ÌÀàÐÍ·½·¨loadlevel
    {
        loadingInfoText.text = "0%";
        loadSlider.value = 0;
        loadingPanel.SetActive(true);

        AsyncOperation operation = SceneManager.LoadSceneAsync(loadSceneName);
        operation.allowSceneActivation = false;
        while (!operation.isDone)
        {
            loadSlider.value = operation.progress;
            loadingInfoText.text = operation.progress + "%";
            Debug.Log(operation.progress);
            if (operation.progress >= 0.9f)
            {
                loadSlider.value = 1;
                loadingInfoText.text = "100%";
                operation.allowSceneActivation = true;
            }
            yield return null;
        }
        loadingPanel.SetActive(false);
    }

}