GpsBasicsAndroidExample.java file

 




/***********  Create class and implements with LocationListener **************/
    public class GpsBasicsAndroidExample extends Activity implements LocationListener {
         
            private LocationManager locationManager;
             
            @Override
            protected void onCreate(Bundle savedInstanceState) {
             
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_gps_basics_android_example);
                 
                /********** 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
                 
            }
   }
 

  

Explanation :

 

   

                requestLocationUpdates Method :

 

                    Registers the current activity to be notified periodically by the named provider. Periodically, the supplied LocationListener will be called with the current Location or with status updates. 

        

                           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  

 

 

                        onLocationChanged Method :           

                                    

                                    Called after each 3 sec ( we have defined in requestLocationUpdates ).

 

                        onProviderDisabled Method :    

 

                                   Called when User off Gps in phone setting.

 

                         onProviderEnabled Method : 

 

                                    Called when User on Gps in phone setting