Bug Loading XRReferenceImageLibrary through Addressables runs in Editor but Android Builds crash

Hi all:

I use AR Foundation with ImageTracking and keep the XRReferenceimagelibrary up to date through addressables so I don't have to release a new build every time I expand the library by a new image.

Therefor I built a reference-image-library, marked it as addressable, load it at start and set it in the (disabled) TrackedImageManager at runtime. Then I activate the TrackedImageManager.
So far so good! Works fine in Unity 2020.3.36, Addressables 1.18. and AR Foundation 4.1.16.
as well as in Editor and in the Android-Build (IL2CPP)

Here's the catch:
After updating to 2021.3.8 with Addressables 1.19 and AR Foundation 4.2.3 still everything works fine in the editor but my builds for Android keep crashing. In Logcat I get this:

InvalidOperationException: Failed to load XRReferenceImageLibrary, library does not contain any ARCore data.

Does anybody know how to deal with this? I rebuilt the whole setup in a new project: same problem.
The AR Foundation 4.2.3 documentation says referencelibraries can now be updated through addressables:

https://docs.unity3d.com/Packages/com.unity.xr.arfoundation@4.2/manual/tracked-image-manager.html

Ironically in AR Foundation 4.1. it is working though from the 4.2. doc it should not, whereas in the version that brags with this feature I get build-crashes. Or am I missing something? When I set a serialized referenceLibrary at runtime everything works. So from my understanding it has got to do with the referencelibrary downloaded as addressable not beeing read properly.

Here's the code I use to set up the library:

Code (CSharp):

1.  
2. public void LoadReferenceLibrary()
3. {
4.     referenceLibraryHandle = Addressables.LoadAssetAsync<XRReferenceImageLibrary>(key);
5.     referenceLibraryHandle.Completed += ReferenceLibraryHandle_Completed;
6. }
7.  
8. void ReferenceLibraryHandle_Completed(AsyncOperationHandle<XRReferenceImageLibrary> handle)
9. {
10.     if (handle.Status == AsyncOperationStatus.Succeeded)
11.     {
12.         xRReferenceImageLibrary = handle.Result;
13.         TrackedImageManager.referenceLibrary = xRReferenceImageLibrary;
14.         TrackedImageManager.enabled = true;
15.     }
16. }
17.  

Really nothing fancy at all and from my understanding according to what they say in the docs...
If you have any ideas how to get past this I'd really appreciate that - for three days now I am trying to wrap my head around this... thx

 

Did you get a solution?
I have the same issue on Unity 2021.3.6f1, Addressable 1.19, and ARFoundation 5.0.2.

 

No, I didn't. Unfortunately! I went on with the original setup I had.
I saw there have been updates for ARFoundation as well as the Unity 2021 and Addressables version.
I might give it a second try sometime hoping the updates will fixe the issue.
But more I hope that someone could give me some insights on this issue! The poor echo on this thread makes me think I lack some understanding here.
I would greatly appreciate some clarification why this is happening...

 

I agree. It is weird that it works on ARFoundation 4.1 but not 4.2 or even newer 5.0.2.
BTW, do you successfully update the content of XRRerefenceImageLibrary with the original setup?
I tried to update the reference images in the library with Addressables update workflow but it didn't work.

 

Yes, I managed to do that. Changing the XRReeferenceImageLibrary and having the app reflect those changes seemed to work. I use CloudContentDelivery from UnityServices to host the Bundles btw. Though I got to admit that I didn't test it thoroughly yet.

 

I've same issue..
is there any solution ?

 

Same problem here...any updates?

 

here's another thread about the same issue: https://forum.unity.com/threads/xrr...sable-does-not-carry-any-arcore-data.1189198/

 

Same problem here!

 

As you requested, I submitted a bug for this (IN-55364) but was waiting for it to be added to the public bug tracker before posting about it here.

 

repro project was shared with Liutaurus on the 29th, but status is still "In Review". Let me know if I should share it some other way as well.

 

Thanks, Andy! This looks very similar, but in my case it won't run in editor, either. It gives the error:

“InvalidOperationException: Failed to load XRReferenceImageLibrary ‘LIBRARY NAME’: library does not contain any ARCore data.“ is present

I have a repro project for it, which I've sent to Liutauras. Should I send it somewhere else instead?

 

awesome! thanks!

 

Awesome! Thanks, @andyb-unity ! I'll take a look!

 

Hooray! That fixed it! For anyone else who needs help with this, here's how I implemented it:

I created a new addressables build script in an

Editor

folder:

Code (CSharp):

1. using UnityEditor.AddressableAssets.Build;
2. using UnityEditor.AddressableAssets.Build.DataBuilders;
3. using UnityEditor.XR.ARSubsystems;
4. using UnityEngine;
5.  
6. [CreateAssetMenu(fileName = "BuildScriptTrackedImage.asset", menuName = "Addressables/Content Builders/Tracked Image Build Script")]
7. public class TrackedImageBuildScript : BuildScriptPackedMode
8. {
9.     /// <inheritdoc />
10.     public override string Name => "Tracked Image Build Script";
11.  
12.     protected override TResult BuildDataImplementation<TResult>(AddressablesDataBuilderInput builderInput)
13.     {
14.         Debug.Log("Running ARBuildProcessor.PreprocessBuild()");
15.         ARBuildProcessor.PreprocessBuild(builderInput.Target);
16.  
17.         return base.BuildDataImplementation<TResult>(builderInput);
18.     }
19. }

Then I created an object with that script attached, and added that object to the "Build and Play Mode Scripts" list in

AddressableAssetSettings

.


That made my script show up under "Default Build Script" in the "Addressables Groups" window:


Then I ran that to create a new addressables bundle, and then built the project, and it worked! Hooray!

 

okay but that show a error when I built it:
he type or namespace name 'AddressableAssets' does not exist in the namespace 'UnityEditor' (are you missing an assembly reference?)

 

oookay, I solved the error, my bad xD, but what is the order ? First Build "Default Build Script" and then "Tracked Image Build" ? And for updates, only "Update a Previus Build" or with "Tracked Image Build" too ?

 

since I have project working on arcore now, I need to solve this issue too. According to expert's description to solve issue by adding script on addressable editor. Unfortunately I don't know how to modify addressable editor.
Does everyone can describe more detail how to make it to solve issue?
Any help will be appreciated.

Andy

 

After use my brain to figure out, finally I solve this issue. so happy! according to your question, I think you only do the "Tracked Image Build" operation, doesn't need to do "Default Build Script" because "Tracked Image Build" is inherited from "Default Build Script".

Andy