The current metadata updates are triggered by item transitions,
but depending on the speed of loading the playlist, the first
metadata may only be known later via metadata-change callbacks.
Slow playlist loading also means the UI stays empty and it's
beneficial to show a placeholder to avoid the impressions the
UI hangs.
Finally, clean-up by removing unused string constants and merging
all listeners into onEvents
#minor-release
PiperOrigin-RevId: 571951529
To support Automotive with the session demo, we need a separate app module.
To do this we need to split the service into its own module and make it
usable from different modules.
PiperOrigin-RevId: 568975271
Basically this change removes a bug that makes video playback stuck when
a video is playing and the user taps the UMO notification to get to
the player activity.
- Use `launchMode="singleTop"` for `PlayerActivity`
- Change session activity to a back stacked activity on service `onDestroy`.
Using a back stacked activity `onDestroy()` will be useful once this demo
app implements playback resumption.
The rest of the changes are aesthetic:
- clean up and optimize screen space usage in UI of `PlayerActivity`
- changed some colors, paddings and spacings
- adds a default artwork for the `PlayerView`
PiperOrigin-RevId: 534152052
