通过 AppStoreConnect SIGABRT 的 Unity AssetBundles-解网

问：

我正在尝试使用 AssetBundles 构建一个 Unity 游戏，我想使用 Apple AppStore 分发它们。但是，一旦我尝试使用资产包，应用程序就会崩溃并出现 SIGABRT 错误。

我遵循了这个说明，并对其进行了调整以满足我们的需求。当 loding 返回一个空字符串时（不是预期的 null）。request.error

即使按预期返回资产的完整列表。myLoadedAssetBundle.GetAllAssetNames()

资源包显示在 XCode 中（见下图）。

将存档上传到 AppStoreConnect On-Demand-Resources 后，标记为“是”，但与文档相比，不会显示资产数量。

Mac Studio M1 Ultra
MacOS 13.0.1 （22A400）
Unity 2020.3.39f （英特尔）
XCode 版本 14.1 （14B47b）
Visual Studio for Mac 17.4.1（内部版本 28）Visual Studio for Mac 17.4.1 （build 28）
iPad（第 10 代）
iPadOS 16.1.1 （20B101）

创建 Asset Bundle：

public class CreateAssetBundles
{
    static string iosAssetBundleDirectory = "AssetBundles/iOS";
    [InitializeOnLoadMethod]
    static void SetupResourcesBuild()
    {
        UnityEditor.iOS.BuildPipeline.collectResources += CollectResources;
    }

    static UnityEditor.iOS.Resource[] CollectResources()
    {
        var bundles = AssetDatabase.GetAllAssetBundleNames ();
        
        var reslist = new List<UnityEditor.iOS.Resource> ();
        foreach (var b in bundles)
        {
            reslist.Add(new UnityEditor.iOS.Resource(b,Path.Combine(iosAssetBundleDirectory, b)).AddOnDemandResourceTags(b));
        }

        return reslist.ToArray();
    }

    [MenuItem ("Assets/Build AssetBundles/iOS")]
    static void BuildiOS ()
    {
        EnableDisableAtlas (true);
        
        var options = BuildAssetBundleOptions.None;

        bool shouldCheckODR = EditorUserBuildSettings.activeBuildTarget == BuildTarget.iOS;

#if UNITY_TVOS
        shouldCheckODR |= EditorUserBuildSettings.activeBuildTarget == BuildTarget.tvOS;
#endif

        if (shouldCheckODR)
        {
#if IOS_APP_BUNDLE
            if (PlayerSettings.iOS.useOnDemandResources)
            {
                options |= BuildAssetBundleOptions.UncompressedAssetBundle;
            }
#endif

#if ENABLE_IOS_APP_SLICING
            options |= BuildAssetBundleOptions.UncompressedAssetBundle;
#endif

            if (!Directory.Exists(iosAssetBundleDirectory))
            {
                Directory.CreateDirectory(iosAssetBundleDirectory);
            }
        }
        var ret = BuildPipeline.BuildAssetBundles (iosAssetBundleDirectory,
                                        options,
                                        BuildTarget.iOS);
        EnableDisableAtlas (false);
    }
}

加载 Asset Bundle

    public override IEnumerator DownloadAssetBundleAsync (string bundleName, StringParameter statusParameter, Image progressBar, float remainingPercentiles)
    {
        OnDemandResourcesRequest request = OnDemandResources.PreloadAsync(new string[] { bundleName });
        while (!request.isDone)
        {
            yield return null;
        }

        if (request.error != null && request.error != "")
        {
            //handle error
        }
        DownloadFinished?.Invoke(bundleName);
        yield break;

    }
   
    public override IEnumerator LoadAssetBundleFromFileAsync (string bundleName, StringParameter statusParameter, Image progressBar, float remainingPercentiles, bool checkOutdated)
    {
        var filepath = "res://" + bundleName;

        var bundleLoadRequest = AssetBundle.LoadFromFileAsync(filepath);
        yield return bundleLoadRequest;
        while (!bundleLoadRequest.isDone)
        {
            yield return null;
        }
        var myLoadedAssetBundle = bundleLoadRequest.assetBundle;

        if (myLoadedAssetBundle == null)
        {
            //Handle error
        }
        loadedAssetBundle = myLoadedAssetBundle;
    }

SIGABRT公司

Incident Identifier: [REMOVED]
Beta Identifier:     [REMOVED]
Hardware Model:      iPad13,18
Process:             [REMOVED] [547]
Path:                /private/var/containers/Bundle/Application/[REMOVED]
Identifier:          [REMOVED]
Version:             0.9.1 (21)
AppStoreTools:       14C17
AppVariant:          1:iPad13,18:16
Beta:                YES
Code Type:           ARM-64 (Native)
Role:                Foreground
Parent Process:      launchd [1]
Coalition:           [REMOVED] [694]

Date/Time:           2022-12-12 13:45:12.5058 +0100
Launch Time:         2022-12-12 13:45:05.0791 +0100
OS Version:          iPhone OS 16.1.1 (20B101)
Release Type:        User
Report Version:      104

Exception Type:  EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Triggered by Thread:  35

Application Specific Information:
abort() called


Last Exception Backtrace:
0   CoreFoundation                         0x1d1171e88 __exceptionPreprocess + 164
1   libobjc.A.dylib                        0x1ca5178d8 objc_exception_throw + 60
2   Foundation                             0x1cb6259b0 -[_NSInlineData length] + 0
3   UnityFramework                         0x10fc45370 AssetCatalogFile::Read(unsigned long long, unsigned long long, void*, unsigned long long*, FileReadFlags) + 88806256 (AssetCatalogFileSystem.mm:52)
4   UnityFramework                         0x10fc45264 AssetCatalogFileSystemHandler::Read(FileEntryData&, VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 88805988 (AssetCatalogFileSystem.mm:178)
5   UnityFramework                         0x10f0c1074 FileAccessor::Read(VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 76730484 (VirtualFileSystem.cpp:1011)
6   UnityFramework                         0x10f6ad6c4 ArchiveStorageReader::ReadFromStorage(unsigned long long, unsigned long long, void*, unsigned long long*) + 82941636 (ArchiveStorageReader.cpp:587)
7   UnityFramework                         0x10f6a5f80 ArchiveStorageReader::Read(VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 82911104 (ArchiveStorageReader.cpp:173)
8   UnityFramework                         0x10f6a5d60 ArchiveReadFile::Read(VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 82910560 (ArchiveReadFile.cpp:42)
9   UnityFramework                         0x10f6a4240 ArchiveFileSystem::Read(FileEntryData&, VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 82903616 (ArchiveFileSystem.cpp:267)
10  UnityFramework                         0x10f0c1074 FileAccessor::Read(VFS::FileSize, unsigned long long, void*, unsigned long long*, FileReadFlags) + 76730484 (VirtualFileSystem.cpp:1011)
11  UnityFramework                         0x10f61714c File::Read(VFS::FileSize, void*, unsigned long, FileReadFlags) + 82325836 (FileVFS.cpp:443)
12  UnityFramework                         0x10f2b1ecc AsyncReadManagerThreaded::PumpRequests(dynamic_array<AsyncReadCommand*, 0ul>&, dynamic_array<AsyncReadCommand*, 0ul>&) + 78765772 (AsyncReadManagerThreaded.cpp:169)
13  UnityFramework                         0x10f2b191c AsyncReadManagerThreaded::ThreadEntry() + 78764316 (AsyncReadManagerThreaded.cpp:248)
14  UnityFramework                         0x10f2b12d0 AsyncReadManagerThreaded::StaticThreadEntry(void*) + 78762704 (AsyncReadManagerThreaded.cpp:118)
15  UnityFramework                         0x10f6c6994 Thread::RunThreadWrapper(void*) + 83044756 (Thread.cpp:81)
16  libsystem_pthread.dylib                0x21d84b6cc _pthread_start + 148
17  libsystem_pthread.dylib                0x21d84aba4 thread_start + 8

unity-game-engine 应用商店 app-store-connect assetbundle on-demand-resources

答：

0赞 cagcoach 12/15/2022 #1

正如 Unity-Forum 的 Feyyyyy 所指出的：在将下载和读取 AssetBundle 细分为不同的函数时，请务必保留 .request

如果超出范围，则 AssetBundle 将被垃圾回收，并且 App 在尝试读取数据时崩溃。request

例如，可以通过将请求推送到静态列表中来修复该问题

    private static List<OnDemandResourcesRequest> requestsList = new List<OnDemandResourcesRequest>();

    public override IEnumerator DownloadAssetBundleAsync (string bundleName, StringParameter statusParameter, Image progressBar, float remainingPercentiles)
    {
        OnDemandResourcesRequest request = OnDemandResources.PreloadAsync(new string[] { bundleName });
        while (!request.isDone)
        {
            yield return null;
        }

        if (request.error != null && request.error != "")
        {
            //handle error
        }
        requestsList.Add(request);      // Push into list to prevent GC
        DownloadFinished?.Invoke(bundleName);
        yield break;
    }

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通过 AppStoreConnect SIGABRT 的 Unity AssetBundles

Unity AssetBundles via AppStoreConnect SIGABRT

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