android - proximity Alert not fired -

this first question here , search answer not found. build simple app that current position , give alert if i'm stand on specific position, alert not fired, please help. here code :

mainactivity:

package com.lda.notyalert;   public class mainactivity extends activity {      proximityintentreceiver proximityintentreceiver;     private static final string proximity_alert = "com.lda.notyalert.proximityintentreceiver";      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          locationmanager locationmanager;         string svcname = context.location_service;         locationmanager = (locationmanager) getsystemservice(svcname);          criteria criteria = new criteria();         criteria.setaccuracy(criteria.accuracy_fine);         criteria.setpowerrequirement(criteria.power_low);         criteria.setaltituderequired(false);         criteria.setbearingrequired(false);         criteria.setspeedrequired(false);         criteria.setcostallowed(true);         string provider = locationmanager.getbestprovider(criteria, true);          location l = locationmanager.getlastknownlocation(provider);          updatewithnewlocation(l);          locationmanager.requestlocationupdates(provider, 2000, 10,                 locationlistener);          setproximityalert();         intentfilter filter = new intentfilter(proximity_alert);         proximityintentreceiver = new proximityintentreceiver();         registerreceiver(proximityintentreceiver, filter);     }      private void setproximityalert() {         string locservice = context.location_service;         locationmanager locationmanager;         locationmanager = (locationmanager) getsystemservice(locservice);          double lat = 37.422006;         double lng = -122.084095;         float radius = 100f; // meters         long expiration = -1; // not expire          intent intent = new intent(proximity_alert);         pendingintent proximityintent = pendingintent.getbroadcast(this, -1,                 intent, 0);         locationmanager.addproximityalert(lat, lng, radius, expiration,                 proximityintent);      }      private void updatewithnewlocation(location location) {         textview mylocationtext;         mylocationtext = (textview) findviewbyid(r.id.textview1);          string latlongstring = "no location found";         if (location != null) {             double lat = location.getlatitude();             double lng = location.getlongitude();             latlongstring = "lat:" + lat + "\nlong:" + lng;         }          mylocationtext.settext("your current position is:\n" + latlongstring);     }      private final locationlistener locationlistener = new locationlistener() {         public void onlocationchanged(location location) {             updatewithnewlocation(location);         }          public void onproviderdisabled(string provider) {         }          public void onproviderenabled(string provider) {         }          public void onstatuschanged(string provider, int status, bundle extras) {         }     };  } 

this proximityintentreceiver extends broadcastreceiver;

package com.lda.notyalert;   public class proximityintentreceiver extends broadcastreceiver {       private static final int notification_id = 1000;       @suppresswarnings("deprecation")     @override     public void onreceive(context context, intent intent) {         string key = locationmanager.key_proximity_entering;          boolean entering = intent.getbooleanextra(key, false);         if (entering) {              log.d(getclass().getsimplename(), "entering");         } else {             log.d(getclass().getsimplename(), "exiting");         }          notificationmanager notificationmanager = (notificationmanager) context                 .getsystemservice(context.notification_service);          pendingintent pendingintent = pendingintent.getactivity(context, 0,                 null, 0);         notification notification = createnotification();         notification.setlatesteventinfo(context, "proximity alert!",                 "you near point of interest.", pendingintent);          notificationmanager.notify(notification_id, notification);      }      private notification createnotification() {         notification notification = new notification();          notification.icon = r.drawable.ic_launcher;         notification.when = system.currenttimemillis();         notification.flags |= notification.flag_auto_cancel;         notification.flags |= notification.flag_show_lights;         notification.defaults |= notification.default_vibrate;         notification.defaults |= notification.default_lights;         notification.ledargb = color.white;         notification.ledonms = 1500;         notification.ledoffms = 1500;          return notification;      }  }