场景的异步加载（按钮按下，开始加载）

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我是靠谱客的博主俊逸流沙，这篇文章主要介绍场景的异步加载（按钮按下，开始加载），现在分享给大家，希望可以做个参考。

复制代码

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
public class Loading : MonoBehaviour {
//滑动条
public Slider LoadingSlider;
//显示进度文字
public Text LoadingText;
private float loadingSpeed = 1;
private float targetValue;
//异步操作协同程序
private AsyncOperation operation;
private bool isLoading;
void Start () {
LoadingSlider.value = 0.0f;
}
public void LoadingMain()
{
StartCoroutine(AsyncLoading());
isLoading = true;
}
IEnumerator AsyncLoading()
{
operation = SceneManager.LoadSceneAsync("main");
//阻止当前加载完成自动切换
operation.allowSceneActivation = false;
yield return operation;
}
void Update() {
if (isLoading)
{
targetValue = operation.progress;
//operation.progress异步操作协同程序完成的程度，最大是1
if (operation.progress >= 0.9f)
{
targetValue = 1.0f;
}
if (targetValue != LoadingSlider.value)
{
//插值运算
LoadingSlider.value = Mathf.Lerp(LoadingSlider.value, targetValue, Time.deltaTime * loadingSpeed);
//绝对值
if (Mathf.Abs(LoadingSlider.value - targetValue) < 0.01f)
{
LoadingSlider.value = targetValue;
}
}
LoadingText.text = ((int)(LoadingSlider.value * 100)).ToString() + "%";
if ((int)(LoadingSlider.value * 100) == 100)
{
//允许异步加载完毕后自动切换场景
operation.allowSceneActivation = true;
}
}
}
}

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using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
public class Loading : MonoBehaviour {
//滑动条
public Slider LoadingSlider;
//显示进度文字
public Text LoadingText;
private float loadingSpeed = 1;
private float targetValue;
//异步操作协同程序
private AsyncOperation operation;
private bool isLoading;
void Start () {
LoadingSlider.value = 0.0f;
}
public void LoadingMain()
{
StartCoroutine(AsyncLoading());
isLoading = true;
}
IEnumerator AsyncLoading()
{
operation = SceneManager.LoadSceneAsync("main");
//阻止当前加载完成自动切换
operation.allowSceneActivation = false;
yield return operation;
}
void Update() {
if (isLoading)
{
targetValue = operation.progress;
//operation.progress异步操作协同程序完成的程度，最大是1
if (operation.progress >= 0.9f)
{
targetValue = 1.0f;
}
if (targetValue != LoadingSlider.value)
{
//插值运算
LoadingSlider.value = Mathf.Lerp(LoadingSlider.value, targetValue, Time.deltaTime * loadingSpeed);
//绝对值
if (Mathf.Abs(LoadingSlider.value - targetValue) < 0.01f)
{
LoadingSlider.value = targetValue;
}
}
LoadingText.text = ((int)(LoadingSlider.value * 100)).ToString() + "%";
if ((int)(LoadingSlider.value * 100) == 100)
{
//允许异步加载完毕后自动切换场景
operation.allowSceneActivation = true;
}
}
}
}