The original title is "Architecting Location-Based Automation Without Killing the Battery"

Short summary

A developer shares lessons from building Muffle, an Android app that auto-silences your phone based on location using Google's GeofencingClient instead of raw LocationManager to avoid battery drain. The biggest real-world challenge wasn't GPS accuracy but indoor signal degradation causing redundant state transitions, solved with a debounce buffer and state checks before issuing AudioManager commands. Key architectural takeaway: use PendingIntent to let the OS wake your app only on boundary crossings, keeping it idle 99% of the time.

• •Use GeofencingClient over LocationManager to offload location work to OS-level hardware batching
• •Indoor GPS signal degradation, not accuracy, was the real enemy — solved with debounce buffering and state management
• •PendingIntent architecture keeps the app idle 99% of the time, waking only on geofence boundary crossings

Generated with AI, which can make mistakes.