
To reliably reject the System UI playback resumption notification on all API levels (specifically API 30), the backward compatibility layer needs to return `null` for the library root. This is not possible in the Media3 implementation. This change allows an app to return a `LibraryResult.ofError(RESULT_ERROR_NOT_SUPPORTED)` that then is translated to return null by the backwards compatibility layer. Issue: androidx/media#355 Issue: androidx/media#167 Issue: androidx/media#27 See https://developer.android.com/guide/topics/media/media-controls#mediabrowserservice_implementation PiperOrigin-RevId: 527276529
Media session demo
This app demonstrates use of media sessions. It's a reference app written in Kotlin, which demonstrates best practices for media apps that want to advertise media sessions.
See the demos README for instructions on how to build and run this demo.