proximityalert does not fire

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http://stackoverflow.com – i been working on multiple Poximityalert with a database that saves the id of each intent. then i tested it on a device and on the emulator but the notification does not fire when reaching the specified location ... any help will be appreciated. here is the code public class ProximityAlertActivity extends Activity { private static final String proximityalert_intent= "com.example.locationl.PROXIMITY_ALERT"; private LocationManager locManager; private static Double lng; private static Double lat; private static final long MINIMUM_DISTANCECHANGE_FOR_UPDATE = 1; // in Meters private s (HowTos)