如何使 Vuforia 与 aab 和 split 二进制一起工作？

Question

我遇到了一个持续存在的问题，即当我将应用程序构建为具有拆分二进制选项的 Android 应用程序包 (AAB) 时，无法识别 Vuforia 数据库。但是，当我将项目构建为 APK 时，一切正常。

这是我到目前为止所探索的内容：

我了解 AAB 中的 StreamingAssets 文件夹存在特定注意事项，例如下载内容时可能出现延迟。 我尝试使用 AssetBundles 打包 Vuforia 数据库。不幸的是，.dat 文件似乎无法包含在 AssetBundle 中。作为参考，该应用程序确实上传，我可以打开它。只是 Vuforia 不起作用！

我在 Unity 中有一个加载场景，我的主场景在之后加载

设置详情：

Unity 2022.3.25f1
Vuforia 10.22.5
Build App Bundle (Google Play) [Check]
Split Application Binary [Check]

Base Scene Size: ~50MB
Main Scene Size: ~1.5GB

我花了几个晚上的时间试图解决这个问题，但没有成功。有人对如何确保正确识别 Vuforia 数据库并以 AAB 格式加载有建议吗？任何见解或修复将不胜感激。

谢谢你， 运动大脑

我尝试这样做来延迟流媒体资产文件夹。

    IEnumerator Start()
    {

#if UNITY_EDITOR
        yield return null;
#else
            string[] assetPackNames = AndroidAssetPacks.GetCoreUnityAssetPackNames();
            if (!AndroidAssetPacks.coreUnityAssetPacksDownloaded)
            {
                yield return StartCoroutine(WaitForAssetPacksDownload(assetPackNames));
            }
            else{
                yield return StartCoroutine(CheckAssetPacksDownloaded(assetPackNames));
            }
#endif

    }

    IEnumerator WaitForAssetPacksDownload(string[] assetPackNames)
    {
        bool allDownloaded = false;
        // App cannot load without UnityStreamingAssetsPack being downloaded first
        while (!allDownloaded)
        {
            var operation = AndroidAssetPacks.GetAssetPackStateAsync(assetPackNames);
            yield return operation; // Wait for the state check to complete
 
            if (operation.isDone)
            {
                allDownloaded = true;
            }
 
            if (!allDownloaded)
            {
                // Wait before checking again to avoid spamming checks
                yield return new WaitForSeconds(3);
            }
        }
        errorTtext.SetText("All asset packs downloaded.");

        AsyncOperation asyncOperation = SceneManager.LoadSceneAsync(1);
        asyncOperation.allowSceneActivation = false;

        while (!asyncOperation.isDone)
        {
            float progress = asyncOperation.progress * 100;
            loadingPercent.text = (int)progress + "%";

            if (asyncOperation.progress >= 0.90f)
            {
                yield return new WaitForSeconds(5);
                asyncOperation.allowSceneActivation = true;
            }

            yield return null;
        }
        
    }

编辑：

如果应用程序大小为 < 150MB.

，Vuforia 即可工作

Answer 1

找到解决方案：

恢复至 Vuforia 9.8.5。 并在加载我的 MainScene （大场景）时使用了此代码

private string datUrl = "url.dat";
private string xmlUrl = "url.xml";
private string datasetName = "datasetName";    
IEnumerator DownloadAndLoadDatasets()
    {
        // Download DAT file
        UnityWebRequest datRequest = UnityWebRequest.Get(datUrl);
        yield return datRequest.SendWebRequest();
        if (datRequest.isNetworkError || datRequest.isHttpError)
        {
            statusText.text += "Failed to download DAT file: " + datRequest.error;
            yield break;
        }

        // Download XML file
        UnityWebRequest xmlRequest = UnityWebRequest.Get(xmlUrl);
        yield return xmlRequest.SendWebRequest();
        if (xmlRequest.isNetworkError || xmlRequest.isHttpError)
        {
            statusText.text += "Failed to download XML file: " + xmlRequest.error;
            yield break;
        }

        // Save downloaded files
        string datPath = Path.Combine(Application.persistentDataPath, datasetName + ".dat");
        string xmlPath = Path.Combine(Application.persistentDataPath, datasetName + ".xml");
        File.WriteAllBytes(datPath, datRequest.downloadHandler.data);
        File.WriteAllBytes(xmlPath, xmlRequest.downloadHandler.data);

        // Load and activate dataset
        LoadAndActivateDataset(datPath, xmlPath);
    }

    void LoadAndActivateDataset(string datPath, string xmlPath)
    {
        ObjectTracker objectTracker = TrackerManager.Instance.GetTracker<ObjectTracker>();
        DataSet dataSet = objectTracker?.CreateDataSet();
       
        if (dataSet != null /*&& dataSet.Load(xmlPath, VuforiaUnity.StorageType.STORAGE_ABSOLUTE)*/)
        {
            objectTracker.Stop();
            objectTracker.ActivateDataSet(dataSet);
            objectTracker.Start();
        }
        else
        {
            statusText.text += "Failed to load dataset.";
        }
    }