AR Tracked Image Manager descriptor is null

Questions & Answers
1

I’m working on an AR project that needs to add reference images during runtime

When I tried to do trackedImageManager.CreateRuntimeLibrary(), I got this error: “No image tracking subsystem found. This usually means image tracking is not supported.”

So I check if the image manager supports mutable libraries with trackedImageManager.descriptor.supportsMutableLibrary

But it return an error that said trackedImageManager.descriptor is null

I tried to google why the descriptor is null but no answer for this

I also download the latest version of the AR Foundation Sample from Unity to see what I did wrong but the descriptor of AR Tracked Image Manager from that project also return null

I’m using:

AR Foundation version 4.1.9

AR Subsystems version 4.1.9

ARCore version 4.1.9

ARKit version 4.1.9

2

In case anyone got this problem in the future

You will need to select the ARCore in the plugin settings. I’m using unity version 2019.4.20f1 but I think the later version may be the same or only different a little.

You will need to go to: File → Build Settings → Player Settings → XR Plug-in Management → Select the platform you are using (in my case it is Android) → Check the ARCore plugin

3

I have the same error. I checked the ARCorePlugin and is enabled, Any other idea? Thanks in advance !,I have the same error, I checked what you mentioned but I have the ARCore plgin enabled. Any other idea ??

4

Did you get (mutable) runtime libraries to work on Android? In my case, ARFoundation reports that there is no support for mutable libraries. The ARCore docs state otherwise, though.