If your application needs to know when the user enters or exits a certain location, there's an alternative to continuously checking the user location: Geofencing. A Geofence is a location (latitude and longitude) along with a radius. You can create a Geofence and let the system notify you when the user enters the location proximity you specified. (Android currently allows up to 100 Geofences per user.)
Geofence properties include:
- Location: The longitude and latitude
- Radius: The size of the circle (in meters)
- Loitering delay: How long the user may remain within the radius before sending notifications
- Expiration: How long until the Geofence automatically expires
- Transition type:
- GEOFENCE_TRANSITION_ENTER
- GEOFENCE_TRANSITION_EXIT
- INITIAL_TRIGGER_DWELL
This recipe will show you how to create a Geofence object and use it to create an instance...
