My app is streaming music and uses the Music Controller plugin as described here:
The Music Controller icons show correctly in the status bar, and the Music Controller / Player can be opened correctly.
Only on Android 8, the Music Controller icon + player are both missing. Music is however still heard, but there are no means to stop / play the music when the app is pushed to the background.
When running the app on e.g. Android 8 Emulator (API 27), I receive a notification stating: “Developer warning for package ‘xxxx.xxxx.xxxxx’ Failed to post notification on channel ‘null’.”
How can this be fixed for Android 8?