How to debug Android GPS tracking project? -

i posted question: how track gps if reaches particular location or around 20 meters? that, learned how start, created code track.

activity:

import java.text.decimalformat; import java.text.numberformat;  import android.app.activity; import android.app.pendingintent; import android.content.context; import android.content.intent; import android.content.intentfilter; import android.content.sharedpreferences; import android.location.location; import android.location.locationlistener; import android.location.locationmanager; import android.os.bundle; import android.view.view; import android.view.view.onclicklistener; import android.widget.button; import android.widget.edittext; import android.widget.toast;  public class proxalertactivity extends activity {      private static final long minimum_distancechange_for_update = 1; // in meters     private static final long minimum_time_between_update = 1000; // in milliseconds      private static final long point_radius = 500; // in meters     private static final long prox_alert_expiration = -1;       private static final string point_latitude_key = "point_latitude_key";     private static final string point_longitude_key = "point_longitude_key";      private static final string prox_alert_intent = "com.javacodegeeks.android.lbs.proximityalert";      private static final numberformat nf = new decimalformat("##.########");      private locationmanager locationmanager;      private edittext latitudeedittext;     private edittext longitudeedittext;     private button findcoordinatesbutton;     private button savepointbutton;      @override     public void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);         setcontentview(r.layout.main);          locationmanager = (locationmanager) getsystemservice(context.location_service);          locationmanager.requestlocationupdates(                         locationmanager.gps_provider,                          minimum_time_between_update,                          minimum_distancechange_for_update,                         new mylocationlistener()         );          latitudeedittext = (edittext) findviewbyid(r.id.point_latitude);         latitudeedittext.settext("13.030729");          longitudeedittext = (edittext) findviewbyid(r.id.point_longitude);         longitudeedittext.settext("80.208975");          findcoordinatesbutton = (button) findviewbyid(r.id.find_coordinates_button);         findcoordinatesbutton.setvisibility(view.gone);          savepointbutton = (button) findviewbyid(r.id.save_point_button);          findcoordinatesbutton.setonclicklistener(new onclicklistener() {                         @override             public void onclick(view v) {                 populatecoordinatesfromlastknownlocation();             }         });          savepointbutton.setonclicklistener(new onclicklistener() {                       @override             public void onclick(view v) {                 saveproximityalertpoint();             }         });      }      private void saveproximityalertpoint() {         location location = locationmanager.getlastknownlocation(locationmanager.gps_provider);         if (location==null) {             toast.maketext(this, "no last known location. aborting...", toast.length_long).show();             return;         }         savecoordinatesinpreferences((float)location.getlatitude(), (float)location.getlongitude());         addproximityalert(location.getlatitude(), location.getlongitude());      }      private void addproximityalert(double latitude, double longitude) {          intent intent = new intent(prox_alert_intent);         pendingintent proximityintent = pendingintent.getbroadcast(this, 0, intent, 0);          locationmanager.addproximityalert(             latitude, // latitude of central point of alert region             longitude, // longitude of central point of alert region             point_radius, // radius of central point of alert region, in meters             prox_alert_expiration, // time proximity alert, in milliseconds, or -1 indicate no expiration              proximityintent // used generate intent fire when entry or exit alert region detected        );         intentfilter filter = new intentfilter(prox_alert_intent);          registerreceiver(new proximityintentreceiver(), filter);      }      private void populatecoordinatesfromlastknownlocation() {         location location = locationmanager.getlastknownlocation(locationmanager.gps_provider);         if (location!=null) {             latitudeedittext.settext(nf.format(location.getlatitude()));             longitudeedittext.settext(nf.format(location.getlongitude()));         }     }      private void savecoordinatesinpreferences(float latitude, float longitude) {         sharedpreferences prefs = this.getsharedpreferences(getclass().getsimplename(), context.mode_private);         sharedpreferences.editor prefseditor = prefs.edit();         prefseditor.putfloat(point_latitude_key, latitude);         prefseditor.putfloat(point_longitude_key, longitude);         prefseditor.commit();     }      private location retrievelocationfrompreferences() {         sharedpreferences prefs = this.getsharedpreferences(getclass().getsimplename(), context.mode_private);         location location = new location("point_location");         location.setlatitude(prefs.getfloat(point_latitude_key, 0));         location.setlongitude(prefs.getfloat(point_longitude_key, 0));         return location;     }      public class mylocationlistener implements locationlistener {         public void onlocationchanged(location location) {             location pointlocation = retrievelocationfrompreferences();             float distance = location.distanceto(pointlocation);             toast.maketext(proxalertactivity.this,                      "distance point:"+distance, toast.length_short).show();          }         public void onstatuschanged(string s, int i, bundle b) {                     }         public void onproviderdisabled(string s) {         }         public void onproviderenabled(string s) {                    }     }  } 

broadcast:

import android.app.notification; import android.app.notificationmanager; import android.app.pendingintent; import android.content.broadcastreceiver; import android.content.context; import android.content.intent; import android.graphics.color; import android.location.locationmanager; import android.util.log;  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_menu_notifications;         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;     }  } 

manifest:

<?xml version="1.0" encoding="utf-8"?>  <manifest xmlns:android="http://schemas.android.com/apk/res/android"       package="com.javacodegeeks.android.lbs"       android:versioncode="1"       android:versionname="1.0">      <application android:icon="@drawable/icon" android:label="@string/app_name">          <activity android:name=".proxalertactivity"                   android:label="mytrack">             <intent-filter>                 <action android:name="android.intent.action.main" />                 <category android:name="android.intent.category.launcher" />             </intent-filter>         </activity>           </application>      <uses-sdk android:minsdkversion="3" />      <uses-permission android:name="android.permission.access_fine_location" />     <uses-permission android:name="android.permission.access_mock_location" />      <uses-permission android:name="android.permission.access_coarse_location" />     <uses-permission android:name="android.permission.vibrate" />  </manifest>  

i gave static location that, entering 500 meter radius, guess alert. after starting this, gone more 1000 meters , started returning.

but didn't alert until reach place.

use google services location api location. locationmanager class create problem while giving location.

code goes below..

add these permissions in manifest..

<uses-permission android:name="android.permission.access_fine_location" /> <uses-permission android:name="android.permission.access_coarse_location" /> <uses-permission android:name="android.permission.internet" /> 

add following code under application tag in manifest file..

<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" /> 

java code goes here..

package com.example.location_test;  import android.app.activity;  import android.location.location; import android.os.bundle; import android.widget.button; import android.widget.edittext; import android.widget.toast;  import com.google.android.gms.common.connectionresult; import com.google.android.gms.common.googleplayservicesclient; import com.google.android.gms.location.locationclient; import com.google.android.gms.location.locationlistener; import com.google.android.gms.location.locationrequest;  public class activity1 extends activity implements         googleplayservicesclient.connectioncallbacks,         googleplayservicesclient.onconnectionfailedlistener, locationlistener {      edittext e1, e2;     button b;     locationclient mlocationclient;     location mcurrentlocation;     locationrequest mlocationrequest;      // milliseconds per second     private static final int milliseconds_per_second = 1000;     // update frequency in seconds     public static final int update_interval_in_seconds = 5;     // update frequency in milliseconds     private static final long update_interval = milliseconds_per_second             * update_interval_in_seconds;     // fastest update frequency, in seconds     private static final int fastest_interval_in_seconds = 1;     // fast frequency ceiling in milliseconds     private static final long fastest_interval = milliseconds_per_second             * fastest_interval_in_seconds;     private static final string provider = "flp";     private static final float accuracy = 3.0f;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity1);          b = (button) findviewbyid(r.id.b);         e1 = (edittext) findviewbyid(r.id.e1);         e2 = (edittext) findviewbyid(r.id.e2);          try {             // create locationrequest object             mlocationrequest = locationrequest.create();             // use high accuracy             mlocationrequest.setpriority(locationrequest.priority_high_accuracy);             // set update interval 5 seconds             mlocationrequest.setinterval(update_interval);             // set fastest update interval 1 second             mlocationrequest.setfastestinterval(fastest_interval);              mlocationclient = new locationclient(activity1.this,                     activity1.this, activity1.this);             mlocationclient.connect();             // mlocationclient.setmockmode(true);         } catch (exception e) {             e.printstacktrace();         }     }      @override     public void onconnectionfailed(connectionresult arg0) {         // todo auto-generated method stub         toast.maketext(this, "connection failed.", toast.length_short).show();     }      @override     public void onconnected(bundle arg0) {         // todo auto-generated method stub         toast.maketext(this, "connected", toast.length_short).show();         mlocationclient.requestlocationupdates(mlocationrequest, this);     }      @override     public void ondisconnected() {         // todo auto-generated method stub         toast.maketext(this, "connection disconnected.", toast.length_short)                 .show();     }      @override     public void onlocationchanged(location location) {         // todo auto-generated method stub         string msg = "updated location: "                 + double.tostring(location.getlatitude()) + ","                 + double.tostring(location.getlongitude());         toast.maketext(this, msg, toast.length_short).show();     } }