[Bug]: AGP 8 not supported

[Zazo032]

What happened?

Trying to run an Android Flutter app with AGP8 fails.

Steps to reproduce?

1. Add `onesignal_flutter` package
2. Update the project to support AGP8
3. Run the Android app

What did you expect to happen?

App runs without issues

OneSignal Flutter SDK version

5.0.3

Which platform(s) are affected?

• [ ] iOS
• [X] Android

Relevant log output

A fix could be applied like this: https://github.com/firebase/flutterfire/pull/10901

FAILURE: Build completed with 2 failures.

1: Task failed with an exception.
-----------
* What went wrong:
A problem occurred configuring project ':onesignal_flutter'.
> Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
   > Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.

     If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

2: Task failed with an exception.
-----------
* What went wrong:
Failed to query the value of property 'buildFlowServiceProperty'.
> Could not isolate value org.jetbrains.kotlin.gradle.plugin.statistics.BuildFlowService$Parameters_Decorated@29a76d30 of type BuildFlowService.Parameters
   > A problem occurred configuring project ':onesignal_flutter'.
      > Could not create an instance of type com.android.build.api.variant.impl.LibraryVariantBuilderImpl.
         > Namespace not specified. Specify a namespace in the module's build file. See https://d.android.com/r/tools/upgrade-assistant/set-namespace for information about setting the namespace.

           If you've specified the package attribute in the source AndroidManifest.xml, you can use the AGP Upgrade Assistant to migrate to the namespace value in the build file. Refer to https://d.android.com/r/tools/upgrade-assistant/agp-upgrade-assistant for general information about using the AGP Upgrade Assistant.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.
==============================================================================

BUILD FAILED in 29s
Exception: Gradle task assembleQaDebug failed with exit code 1

Code of Conduct

• [X] I agree to follow this project's Code of Conduct

[emawby]

@Zazo032 Thank you for reaching out we are investigating