This is the overall procedure:
01. Create an area target by Vuforia Area Creator App on iPad Pro 2021(3rd generation, iOS 14.7.1)
02. Upload the dat/xml/glb/3dt files to Ali OSS(an online server)
03. In my app on HoloLens1, users choose the area to register, then the app download the area's dat/xml/glb/3dt files from the server to a folder whose path is : application.persistentDataPath/areaname
04. Load and activate the dataset from the folder
The load and activate job mainly performed by two method(as shown in the two screenshots):
These two methods are almost the same as the demo codes provided in https://developer.vuforia.com/downloads/tool
The EnvManager and AreaTargetDataManager are two scripts added to an empty gameobject named "SceneManager"(as shown in the 3rd screenshot).
The files can be successfully downloaded but the dataSet.Load() always failed.
The code of downloading the dat/xml/glb/3dt files are added.
And I really need your help because there are too many questions that our development has been interrupted.