How a Developer Built a Battery-Efficient Geofencing App for Android 14

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A developer built a location-aware automation system for Android 14 that silences a phone when entering specific locations, such as mosques or meeting rooms, without draining the battery. Instead of continuously polling GPS, the app uses Google Play Services' GeofencingClient API, which hands off hardware monitoring to the system and only wakes the app when a geofence boundary is crossed. A BroadcastReceiver handles the brief task of adjusting the device's audio profile via AudioManager and then shuts down immediately, avoiding persistent background processes. App state is stored in a local Room database so the correct configuration is preserved even if the system kills the app process between triggers. The developer also encountered a 'flapping' problem where GPS signal drift near small geofence boundaries caused rapid toggling between sound modes, highlighting the need for debounce logic in location-based automation.

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ProgrammingDEV Community ·

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