How to build a geocaching app with Android’s Fused Location

Geocaching, an activity involving the use of GPS to find hidden items, is the focus of a tutorial for building an Android application using the Fused Location library. The project involves creating an app that notifies users when they are within a certain radius of a cache, with continuous location updates provided by a background service. It covers the setup of Google Maps integration, obtaining necessary API keys, and setting location permissions. The tutorial details the creation of an abstraction layer for location updates, implementing a foreground service to track user movement, and using Haversine formula to calculate the distance between the user and cache. Conditional notifications are employed to inform users of their proximity to the cache, and the notification system is managed through a notification channel. The tutorial concludes with instructions for integrating these components and running the application, enabling users to receive proactive updates about their location relative to the geocache.