Errors that packages does not exist when integrate two different libraries

[syakimchik]

Android application type

.NET Android (net7.0-android, etc.)

Affected platform version

VS 2023 17.6.3 (build 421), .NET 7.0

Description

When I added Xamarin.DocumentReader.Api.Android and Xamarin.DocumentReader.Core.FullRfid.Android to the new project it built without any issues. But when I add another library, it cause problems in the first.
Mono cannot build references in the first library, but when I remove the second dependency it will build again.

Steps to Reproduce

1. Create a new .NET MAUI App project.
2. Add dependencies: Xamarin.DocumentReader.Api.Android and Xamarin.DocumentReader.Core.FullRfid.Android
3. Build project. In the result, you will see that project will build successfully.
4. Add Xamarin.Regula.FaceApi.Android and Xamarin.Regula.FaceApi.Core.Android
5. Build project again. You will see that errors that some classes in dependencies from step 2 are missing.

Did you find any workaround?

No response

Relevant log output

/Library/Java/JavaVirtualMachines/microsoft-11.jdk/Contents/Home/bin/javac -J-Dfile.encoding=UTF8 "@/var/folders/46/mp5fvk691s7fh0wn1_mghjfh0000gn/T/tmpmeWoI8.tmp" -target 1.8 -source 1.8 
    obj/Debug/net7.0-android/android/src/mono/com/regula/documentreader/api/listener/NetworkInterceptorListenerImplementor.java:8: error: package com.regula.documentreader.api.listener does not exist
    		com.regula.documentreader.api.listener.NetworkInterceptorListener
    		                                      ^
    obj/Debug/net7.0-android/android/src/mono/com/regula/documentreader/api/ble/BLEWrapper_IBleNfcApduListenerImplementor.java:8: error: package com.regula.documentreader.api.ble.BLEWrapper does not exist
    		com.regula.documentreader.api.ble.BLEWrapper.IBleNfcApduListener

[jonathanpeppers]

It just looks like Xamarin.Regula.FaceApi.Android is missing dependencies. Do you need to report this to the owner of the Xamarin.Regula.FaceApi.Android NuGet package?

[microsoft-github-policy-service]

Hi @syakimchik. We have added the "need-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[syakimchik]

Hi @jonathanpeppers,
I'm software developer of the Xamarin.Regula.FaceApi.Android library.
What dependencies are missing?

If I build the project only with Xamarin.Regula.FaceApi.Android library, it works fine. and when I add Xamarin.DocumentReader.Api.Android without Xamarin.Regula.FaceApi.Android library, it works fine.

But something breaks when I add Xamarin.Regula.FaceApi.Android library. I don't see that something missing, because separately libraries works. But tother don't.

it happened when we moved to using MAUI. When we take our previous version of libraries that using Forms, we will not have any issues. Something wrong in the Mono platform, but I cannot understand what breaks it.

[syakimchik]

I've created library as described in the topic . It's easy for Android platform.
And those libraries don't have any issue when I use in a different projects. But I cannot use it together. Mono cannot build the project. I need to know the reason, what I should fix in the library to solve it.

Both libraries have the same dependencies with the same versions. As I said, when we used Xamarin Forms, we hadn't had any issues.

[jonathanpeppers]

Is the problem one of your .aar files is missing and should be there? Does it work in .NET 8?

If so, it could be the problem described here (workarounds here, too): #8308 (comment)

[syakimchik]

maui-error.zip

@jonathanpeppers, I've attached the project with .NET 8, but it doesn't work too.

I tried to apply your solution from #8308 (comment), but it doesn't work. I got even more errors.

Can you try to build sample above?

[syakimchik]

Hi @jonathanpeppers ,
Do you have any news? Have you reproduced the issue?

[Lug16]

Hi @syakimchik, I'm facing the same issue.

Error JAVAC0000 javac: error: package com.regula.documentreader.api.ble does not exist
extends com.regula.documentreader.api.ble.BleWrapperCallback

The project is on MAUI 8.0

This is the set of references:
<ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'"> <PackageReference Include="Xamarin.DocumentReader.BTDevice.iOS" Version="6.8.318"/> <PackageReference Include="Xamarin.DocumentReader.Api.iOS" Version="7.1.3379"/> <PackageReference Include="Xamarin.DocumentReader.Core.FullRfid.iOS" Version="7.1.8787"/> <PackageReference Include="Xamarin.Regula.FaceApi.iOS" Version="6.1.1746"/> <PackageReference Include="Xamarin.FaceCore.Basic.iOS" Version="6.1.584"/> </ItemGroup> <ItemGroup Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'android'"> <PackageReference Include="Xamarin.DocumentReader.BTDevice.Android" Version="1.1.394"/> <PackageReference Include="Xamarin.DocumentReader.Api.Android" Version="7.1.9667"/> <PackageReference Include="Xamarin.DocumentReader.Core.FullRfid.Android" Version="7.1.10515"/> <PackageReference Include="Xamarin.AndroidX.DataBinding.ViewBinding" Version="8.0.2"/> <PackageReference Include="Xamarin.FaceCore.Basic.Droid" Version="6.1.407"/> <PackageReference Include="Xamarin.Regula.FaceApi.Android" Version="6.1.3021"/> </ItemGroup>

Any help would be very appreciated

[syakimchik]

Hi @Lug16,
It's Xamarin issue. It's not problem in the Library.

[justinwojo]

@syakimchik could you try adjusting one of the packages underlying aar name and see if that possibly fixes this?

My running theory is that with both of these nuget packages referencing the same name of aar's "api.aar" that it results in an overwrite or wrong reference which causes the compilation issue. I haven't set up a test project to test the theory, but it seems logical as to why they work independently but not when both are referenced.

The old version of this SDK (Xamarin.Regula.FaceApi.Core.Android) the underlying aar was called "core.aar", hence why I think the theory holds as to why it used to work fine with that SDK and not this one as there wasn't a naming conflict.

EDIT: Theory is proved. If I go into my nuget cache folder, rename "api.aar" to something unique like "facecoreapi.aar", the app immediately compiles. I think it has to do with the fact that this face library has a dependency on the document sdk, which also has its own api.aar file. So it references the wrong one, and then has compile errors.

However, this results in a document exception error at runtime:
com.regula.documentreader.api.errors.DocumentReaderException: Cannot create native wrapper at com.regula.documentreader.api.BaseDocumentReader.lambda initializeDocumentReader