Android : Get notification when user enter in specific location

Look at the LocationManager.addProximityAlert function. It does pretty much exactly what you want. Warning, it does use a good amount of battery.

The best approach to this problem is using the GeoFences feature. Please refer to https://developer.android.com/training/location/geofencing.html for more details.

Outline: - The application registers with the underlying OS - saying - here is MY list of geofences (specific location + radius from the location) that I want you to monitor. - If my user comes within this geo fence - wake me up and tell me so. - At that point of time - you can go ahead and perform any step (either call a server and ask what information you need to display to the user) or just send a push notification (in app notification) to do the necessary work.

Hope this helps.