Le app Android spesso devono eseguire lavoro in background — compiti che girano al di fuori dell'interfaccia utente immediata, come la sincronizzazione dei dati, gli upload o i job periodici. Android fornisce diversi meccanismi (WorkManager, Services, coroutine) con diversi casi d'uso, più importanti vincoli del sistema operativo.
Opzioni di lavoro in background
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SERVICES → general background components (largely superseded by WorkManager/coroutines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)
