```csharp using System; using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.AddressableAssets; using UnityEngine.ResourceManagement.AsyncOperations; using UnityEngine.ResourceManagement.ResourceProviders; using UnityEngine.UI; using static UnityEngine.AddressableAssets.Addressables; public class GameLaunch : MonoBehaviour { public Action OnStatusTipHasChanged; public Action OnDownloadPercentHasChanged; public Action OnDownloadHasResult; AsyncOperationHandle handle; GameObject obj; ///

/// 自定义指定待更新检测的 Label 集合 ///

private List mKeys = new List() { "default" }; public IEnumerator CheckUpdate() { bool isNeedUpdateCatalog = false; bool isNeedUpdateResources = false; // 初始化 Addressable var initHandle = Addressables.InitializeAsync(); yield return initHandle; OnStatusTipHasChanged?.Invoke("开始检查更新"); Debug.LogError("开始检查更新"); // 检查本地 Catalog 是否为最新版本 var checkHandle = Addressables.CheckForCatalogUpdates(false); yield return checkHandle; if (checkHandle.Status == AsyncOperationStatus.Succeeded) { OnDownloadPercentHasChanged?.Invoke(1); OnStatusTipHasChanged?.Invoke("目录检查完成"); Debug.LogError("目录检查完成"); } List catalogs = checkHandle.Result; if (catalogs != null && catalogs.Count > 0) { OnStatusTipHasChanged?.Invoke("检测到目录需要更新"); Debug.LogError("检测到 Catalogs 需要更新"); isNeedUpdateCatalog = true; } else { OnStatusTipHasChanged?.Invoke("检测到目录已是最新"); Debug.LogError("检测到 Catalogs 已是最新"); } var sizeHandle = Addressables.GetDownloadSizeAsync(mKeys); if (sizeHandle.Result > 0) { Debug.LogError("检测到有更新资源包"); OnStatusTipHasChanged?.Invoke("检测到有更新资源包"); isNeedUpdateResources = true; } else { Debug.LogError("检测到没有资源更新"); OnStatusTipHasChanged?.Invoke("检测到没有资源更新"); } OnStatusTipHasChanged?.Invoke("准备进行下一步"); if (isNeedUpdateCatalog || isNeedUpdateResources) { if (isNeedUpdateCatalog) { yield return UpdateCatalog(catalogs); } if (isNeedUpdateResources) { yield return UpdateResources(); } OnDownloadHasResult?.Invoke(true); } else { //StartGame(); Debug.LogError("开始游戏"); } } private void Update() { if (Input.GetKeyDown(KeyCode.C)) { StartCoroutine(CheckUpdate()); } if (Input.GetKeyDown(KeyCode.L)) { handle = Addressables.LoadAssetAsync("Image"); handle.Completed += param => { if (param.Status == AsyncOperationStatus.Succeeded) { Debug.LogError("预加载成功"); } else { Debug.LogError("预加载失败"); } obj = param.Result; }; } if (Input.GetKeyDown(KeyCode.R)) { ReleaseCache(); } if (Input.GetKeyDown(KeyCode.Space)) { Instantiate(obj, new Vector2(UnityEngine.Random.Range(0, 400), UnityEngine.Random.Range(0, 400)), Quaternion.identity, GameObject.Find("Canvas").transform); } } private IEnumerator UpdateCatalog(List catalogs) { var updateHandle = Addressables.UpdateCatalogs(catalogs, false); Debug.LogError("开始更新 Catalogs"); yield return updateHandle; Addressables.Release(updateHandle); } private IEnumerator UpdateResources() { ReleaseCache(); // 需更新大小 > 0，表示需要下载更新 // 清理旧资源 //var clearHandle = Addressables.ClearDependencyCacheAsync(mKeys, false); //yield return clearHandle; // 下载待更新资源 var downloadHandle = Addressables.DownloadDependenciesAsync(mKeys, MergeMode.Union, false); Debug.LogError("开始更新资源"); while (!downloadHandle.IsDone) { DownloadStatus downloadStatus = downloadHandle.GetDownloadStatus(); OnDownloadPercentHasChanged?.Invoke(downloadStatus.Percent); OnStatusTipHasChanged?.Invoke($"下载进度: {downloadStatus.Percent * 100} %"); Debug.LogError($"下载进度: {downloadStatus.Percent * 100} %"); yield return null; } if (downloadHandle.Status == AsyncOperationStatus.Succeeded) { OnStatusTipHasChanged?.Invoke($"下载情况：{(downloadHandle.IsDone ? "完成" : "未完成")}"); Debug.LogError($"下载情况：{(downloadHandle.IsDone ? "完成" : "未完成")}"); } else { OnStatusTipHasChanged?.Invoke($"下载更新包失败"); Debug.LogError($"下载更新包失败，错误内容：{downloadHandle.OperationException.Message}"); } Addressables.Release(downloadHandle); } private void ReleaseCache() { try { Addressables.Release(handle); Debug.LogError("释放资源成功"); } catch (Exception) { Debug.LogError("释放资源失败"); } } } ```