I need an Android application that detects the next railway station during a journey and speaks the station name about 5 km before arrival. The core requirement is reliable, real-time identification of the train’s location and mapping it to the correct station in the route database, then triggering a clear sound alert—no other notification types are necessary. The app is expected to use an internet connection for positioning and station look-ups, so there is no need to build or cache full offline datasets. A simple, minimalistic interface will suffice: one main screen showing the current station, the next station, and an on/off toggle for the 5 km early-warning sound. No extra settings or feature bloat are needed. Deliverables • Fully functional APK for testing • Complete, well-commented Android Studio source code • Brief README explaining setup, any public APIs or libraries used, and how to adjust the alert distance if required Please keep performance efficient, avoid unnecessary background battery drain, and ensure the spoken alert is loud and clear over typical train noise.