61 lines
2.0 KiB
C#
61 lines
2.0 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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using UnityEngine.AddressableAssets;
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using UnityEngine.ResourceManagement.AsyncOperations;
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using UnityEngine.UI;
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public class DownAddress : MonoBehaviour
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{
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public string preloadLabel = "XJMH";
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public Image image;
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public void XZ()
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{
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StartCoroutine(Starta());
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}
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IEnumerator Starta()
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{
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// 1. 先检查需要下载的大小
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AsyncOperationHandle<long> checkSizeHandle = Addressables.GetDownloadSizeAsync(preloadLabel);
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yield return checkSizeHandle;
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if (checkSizeHandle.Result > 0)
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{
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Debug.Log($"需要下载 {checkSizeHandle.Result} 字节");
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// 2. 开始下载
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AsyncOperationHandle downloadHandle = Addressables.DownloadDependenciesAsync(preloadLabel, true); // autoReleaseHandle 设为 true
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// 等待下载完成，并可选择性地更新进度
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while (!downloadHandle.IsDone)
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{
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// 使用 GetDownloadStatus() 可以获取更精确的下载状态
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DownloadStatus status = downloadHandle.GetDownloadStatus();
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float percent = status.Percent * 100;
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Debug.Log($"下载进度: {percent:F1}%");
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image.fillAmount =1-status.Percent;
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yield return null;
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}
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// 3. 检查结果
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if (downloadHandle.Status == AsyncOperationStatus.Succeeded)
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{
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Debug.Log("预下载完成！");
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}
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else
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{
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Debug.LogError("预下载失败！");
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}
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// 因为我们传入了 autoReleaseHandle = true，所以不需要手动调用 downloadHandle.Release()
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}
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else
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{
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Debug.Log("所有资源已是最新，无需下载。");
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}
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// 记得释放检查大小的操作句柄
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Addressables.Release(checkSizeHandle);
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}
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}
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