Developer Builds Battery-Efficient Geofencing Engine to Auto-Silence Phone by Location

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A developer created Muffle, an Android app that automatically manages phone sound profiles based on the user's physical location, after an embarrassing ringtone incident during a mosque prayer session. Instead of using constant GPS polling, which drains battery quickly, the app leverages Google Play Services' GeofencingClient to delegate location monitoring to the system level. The engine registers circular geographic zones and wakes the app only when a user enters or exits a defined boundary, using GEOFENCE_TRANSITION_ENTER and GEOFENCE_TRANSITION_EXIT events. A PendingIntent and BroadcastReceiver handle audio profile changes without requiring the app to run in the foreground. The developer notes that keeping geofence radius above 100 metres prevents false triggers, while the overall architecture keeps battery consumption minimal for users.

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WebFPGA

Article URL: https://webfpga.io/ Comments URL: https://news.ycombinator.com/item?id=49531525 Points: 3 # Comments: 1

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