startForegroundService() requires startForeground() within ~5 seconds.
The async coroutine (DB queries, old job join) delayed the Media3
notification pipeline past this deadline. Now we:
- Create the media session in onCreate() instead of lazily
- Post a minimal "Connecting…" notification synchronously in
onStartCommand before launching the async play coroutine
- Media3 replaces it with the proper media notification once the
adapter state updates to Playing
Made-with: Cursor
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