Unity异步加载进度条

先上代码：

using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.SceneManagement;

using UnityEngine.UI;

#region 佛祖保佑

/*

                   _ooOoo_

                  o8888888o

                  88" . "88

                  (| -_- |)

                  O\  =  /O

               ____/`---'\____

             .'  \\|     |//  `.

            /  \\|||  :  |||//  \

           /  _||||| -:- |||||-  \

           |   | \\\  -  /// |   |

           | \_|  ''\---/''  |   |

           \  .-\__  `-`  ___/-. /

         ___`. .'  /--.--\  `. . __

      ."" '<  `.___\_<|>_/___.'  >'"".

     | | :  `- \`.;`\ _ /`;.`/ - ` : | |

     \  \ `-.   \_ __\ /__ _/   .-` /  /

======`-.____`-.___\_____/___.-`____.-'======

                   `=---='

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

            佛祖保佑       永无BUG

*/

#endregion

public class AsyncLoadScene : MonoBehaviour

{

    public static string NEXTSCENENAME = "ChooseLevelScene";

    private Text text_loadProgress;

    private RectTransform rectTransform_progressBar;

    private AsyncOperation asyncLoadScene;

    private float progressValue;

    private void Start()

    {

        text_loadProgress = transform.Find("Text").GetComponent<Text>();

        rectTransform_progressBar = transform.Find("Image").GetComponent<RectTransform>();

        asyncLoadScene = SceneManager.LoadSceneAsync(NEXTSCENENAME);

        asyncLoadScene.allowSceneActivation = false;

    }

    private void Update()

    {

        if(text_loadProgress && rectTransform_progressBar)

        {

            progressValue = Mathf.Lerp(progressValue, asyncLoadScene.progress / 0.9F, Time.deltaTime);

            text_loadProgress.text = (progressValue * 100F).ToString("F0") + "%";

            rectTransform_progressBar.sizeDelta = new Vector2(progressValue * 1280F, 85F);

            if(rectTransform_progressBar.sizeDelta.x > 1275F) asyncLoadScene.allowSceneActivation = true;

        }

    }

}

接着如果你感到迷惑，请看如下游戏对象层级：

脚本挂在Panel对象上

那如何使用她呢？

public GameObject Prefab_loadScene;

private void Click_play(){

	Instantiate(Prefab_loadScene);

}

//--------------或者请看如下----------------

public GameObject Prefab_loadScene;

private void Click_play(){
　　AsyncLoadScene.NEXTSCENENAME = "MainScene";
　　GameObject loadScener = Instantiate(Prefab_loadScene);

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Unity异步加载进度条

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