Net7-android binding has ClassNotFoundException when trying to consume

[svaldetero-envoc]

Android application type

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

Affected platform version

VS 17.6.3, net7.0-android

Description

I have a net7.0-android binding project created here: https://github.com/Envoc/envoc-stripe-binding/blob/android-2.19.0/src/StripeTerminal/Envoc.Stripe.Terminal.Android/Envoc.Stripe.Terminal.Android.csproj
With a nuget package here: https://www.nuget.org/packages/Envoc.Stripe.Terminal.Android.

Adding that nuget package and trying to consume the library via the line Com.Stripe.Stripeterminal.Terminal.IsInitialized; from a File -> New Maui Project app causes the exception java.lang.ClassNotFoundException: Didn't find class "com.stripe.jvmcore.logging.terminal.log.Log"

It looks like that class is in com.stripe_stripeterminal-internal-common.aar under the libs folder.

Android binding troubleshooting says to add a missing jar file, but this is a lib of an included aar. Is this a packaging issue?

Steps to Reproduce

1. Create new Maui app
2. Add nuget reference to Envoc.Stripe.Terminal.Android
3. In the click me button add a call to the nuget like Com.Stripe.Stripeterminal.Terminal.IsInitialized;

Did you find any workaround?

No

Relevant log output

No response

[jpobst]

This feels more like a packaging issue than a binding issue, so I'm gonna pass it to Peppers/Dean first.

https://nuget.info/packages/Envoc.Stripe.Terminal.Android/2.19.0

[jonathanpeppers]

So, these files are not in the .nupkg?

https://github.com/Envoc/envoc-stripe-binding/blob/2e479c64309a3cb36e71f2aa9f5d9f6e707171e9/src/StripeTerminal/Envoc.Stripe.Terminal.Android/Envoc.Stripe.Terminal.Android.csproj#L75-L76

Do you need to just add Pack="true" for these?

AndroidMavenLibrary must be implemented in another repo, I'm not familiar with it. It probably doesn't define that for you by default like we do here:

https://github.com/xamarin/xamarin-android/blob/6862b52b37f6f70a6f1f9ba3b38af803461327bb/src/Xamarin.Android.Build.Tasks/MSBuild/Xamarin/Android/Xamarin.Android.AvailableItems.targets#L65-L68

[svaldetero-envoc]

I don't think I need those in the public API and they required so much more fixing in the Metadata.xml. I'll add the pack=true and see if that fixes it.

AndroidMavenLibrary is from XamPrototype.Android.MavenBinding.Tasks nuget package. Github

[jonathanpeppers]

I found the repo now:

https://github.com/jpobst/Prototype.Android.MavenBindings/blob/main/src/Microsoft.Android.MavenBinding.Tasks/XamPrototype.Android.MavenBinding.Tasks.targets

It looks like nothing sets Pack="true" for you, but if you set yourself it should get passed along.

[jpobst]

I assumed this would pick up the AndroidLibrary defaults for Pack and Bind, but perhaps not?

<AndroidLibrary Include="@(_ResolvedAndroidMavenLibraries)" />

[jpobst]

Doing a local test with:

<ItemGroup>
    <AndroidMavenLibrary Include="com.stripe:stripeterminal-internal-models" Version="2.18.1" Bind="False" />
    <AndroidMavenLibrary Include="org.jetbrains.kotlin:kotlin-parcelize-runtime" Version="1.7.20" Bind="False" />
    <AndroidMavenLibrary Include="org.jetbrains.kotlin:kotlin-android-extensions-runtime" Version="1.7.20" />
    <AndroidMavenLibrary Include="com.squareup.wire:wire-runtime" Version="4.4.3" />
</ItemGroup>

It would appear that it does pick up the Pack and Bind defaults for AndroidLibrary:

[jonathanpeppers]

@jpobst and they don't make it to the .nupkg? Can you share a .binlog of dotnet pack -bl?

[jpobst]

For my test case, the 3 .jar files end up in prototype-bind-test.aar which is included in the .nupkg as expected. However the com.stripe_stripeterminal-internal-models.aar file doesn't appear in the bin folder or the .nupkg.

msbuild.zip

(.NET: 7.0.307)

[jpobst]

Actually, this may be a .NET 7 bug that is fixed in .NET 8. If I switch to net8.0-android then it works as expected:

(.NET: 8.0.100-preview.7.23376.3)