[fsharp] Java.Lang.ClassNotFoundException: Didn't find class "<..>" on path: DexPathList

[kerams]

Android framework version

net10.0-android (Preview)

Affected platform version

10.0.100-preview.3.25201.16

Description

I'm inheriting from MediaDataSource in order to play audio in Android.Media.MediaPlayer from an in-memory mp3.

internal class StreamMediaDataSource(byte[] data) : Android.Media.MediaDataSource
{
    // ...
}

It worked just fine with 10.0.100-preview.2.25164.34, but with 10.0.100-preview.3.25201.16 I now get an exception during the instantiation of this class:

Java.Lang.ClassNotFoundException: Didn't find class "crc64467b05f37239e7a6.StreamMediaDataSource" on path: DexPathList[[directory "."],nativeLibraryDirectories=[/system/lib64, /system_ext/lib64, /system/lib64, /system_ext/lib64]]
   at Java.Interop.JniEnvironment.Types.TryFindClass(String classname, Boolean throwOnError)
   at Java.Interop.JniType..ctor(String classname)
   at Java.Interop.JniPeerMembers.JniInstanceMethods..ctor(Type declaringType)
   at Java.Interop.JniPeerMembers.JniInstanceMethods.GetConstructorsForType(Type declaringType)
   at Java.Interop.JniPeerMembers.JniInstanceMethods.StartCreateInstance(String constructorSignature, Type declaringType, JniArgumentValue* parameters)
   at Android.Media.MediaDataSource..ctor()
   at Plugin.Maui.Audio.StreamMediaDataSource..ctor(Byte[] data)
   at Plugin.Maui.Audio.AudioPlayer.Play(Byte[] data)

If I use global.json to pin the SDK to Preview 2, the problem disappears.

Steps to Reproduce

I failed to reproduce it in an empty project, so at the moment I'm in the dark with respect to what exactly might be the thing that makes a difference.

[jonathanpeppers]

Can you share more of the code example on how StreamMediaDataSource is used? The top of the stacktrace shows Plugin.Maui.Audio.AudioPlayer.Play(Byte[] data), so can you share a more complete example? (sample app would be best)

Thanks!

[kerams]

This is the only call site, player is Android.Media.MediaPlayer.

public void Play(byte[] data)
{
	if (!(data?.Length > 0))
	{
		return;
	}

	player.Reset();
	player.SetDataSource(new StreamMediaDataSource(data));
	player.Prepare();
	player.Start();
	stopwatch.Restart();
	isPlaying = true;
}

This is located in a net10.0-android;net10.0-ios;net10.0 SingleProject assembly, in the same solution as the Avalonia Android entry project.