Android-apps skal ofte udføre baggrundsarbejde — opgaver, der kører uden for det umiddelbare UI, såsom datasynkronisering, uploads eller periodiske jobs. Android stiller flere mekanismer til rådighed (WorkManager, Services, coroutines) med forskellige anvendelsesscenarier, samt vigtige begrænsninger fra OS'et.
Muligheder for baggrundsarbejde
COROUTINES (in a ViewModel scope) → for async work tied to the UI/screen (network calls,
loading data) — runs while the screen is active
WORKMANAGER → for DEFERRABLE, GUARANTEED background work that must complete (even if the
app closes or the device reboots): syncing, uploads, periodic tasks, retries
→ the RECOMMENDED solution for most persistent background work
FOREGROUND SERVICE → for ongoing, user-visible background work (music playback, navigation,
active tracking) — shows a persistent notification
SERVICES → general background components (largely superseded by WorkManager/coroutines
for most cases)
