GPS APP using Android

XML File

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

   

</RelativeLayout>

JAVA File

package com.example.gps;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.app.Activity;

import android.content.Context;

import android.view.Menu;

import android.widget.Toast;

public class MainActivity extends Activity implements LocationListener{

private LocationManager locationManager;

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

                 

                /********** get Gps location service LocationManager object ***********/

                locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);

                 

                /* CAL METHOD requestLocationUpdates */

                   

                  // Parameters :

                  //   First(provider)    :  the name of the provider with which to register 

                  //   Second(minTime)    :  the minimum time interval for notifications, 

                  //                         in milliseconds. This field is only used as a hint 

                  //                         to conserve power, and actual time between location 

                  //                         updates may be greater or lesser than this value. 

                  //   Third(minDistance) :  the minimum distance interval for notifications, in meters 

                  //   Fourth(listener)   :  a {#link LocationListener} whose onLocationChanged(Location) 

                  //                         method will be called for each location update 

                

                 

                locationManager.requestLocationUpdates( LocationManager.GPS_PROVIDER,

                        3000,   // 3 sec

                        10, this);

                 

                /********* After registration onLocationChanged method  ********/

                /********* called periodically after each 3 sec ***********/

            }

             

            /************* Called after each 3 sec **********/

            @Override

            public void onLocationChanged(Location location) {

                    

                String str = "Latitude: "+location.getLatitude()+" Longitude: "+location.getLongitude();

  

                Toast.makeText(getBaseContext(), str, Toast.LENGTH_LONG).show();

            }

         

            @Override

            public void onProviderDisabled(String provider) {

                 

                /******** Called when User off Gps *********/

                 

                Toast.makeText(getBaseContext(), "Gps turned off ", Toast.LENGTH_LONG).show();

            }

         

            @Override

            public void onProviderEnabled(String provider) {

                 

                /******** Called when User on Gps  *********/

                 

                Toast.makeText(getBaseContext(), "Gps turned on ", Toast.LENGTH_LONG).show();

            }

         

            @Override

            public void onStatusChanged(String provider, int status, Bundle extras) {

                // TODO Auto-generated method stub

                 

            }

   }

Manifest File

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

<uses-permission android:name="android.permission.INTERNET"/>