How to get Current Location through GPS in Android

I am developing application based on google maps in that current location of user has to display in map. i have google it and find solution but when i run the code it doesnt shows the current location instead it showing google map alone. My code is below

 public class GPSLocation extends MapActivity {
private MapView mapView;
private MapController mapController;
private LocationManager locationManager;
private GPSLocationListener locationListener;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
   // mapView = (MapView) findViewById(R.id.mapView);

    // enable Street view by default
   // mapView.setStreetView(true);

    // enable to show Satellite view
    // mapView.setSatellite(true);

    // ena开发者_运维问答ble to show Traffic on map
    // mapView.setTraffic(true);

  //  mapView.setBuiltInZoomControls(true);

  //  mapController = mapView.getController();
   // mapController.setZoom(16);




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

    locationListener = new GPSLocationListener();

    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,0,0,locationListener);


}
private class GPSLocationListener implements LocationListener 
{
    public GPSLocationListener() {
        // TODO Auto-generated constructor stub
    }
  @Override
  public void onLocationChanged(Location location) {
    if (location != null) {
        System.out.println("onLocationChanged");
          GeoPoint point = new GeoPoint(
                  (int) (location.getLatitude() * 1E6), 
                  (int) (location.getLongitude() * 1E6));


      Toast.makeText(getBaseContext(), 
          "Latitude: " + location.getLatitude() + 
          " Longitude: " + location.getLongitude(), 
          Toast.LENGTH_SHORT).show();

      mapController.animateTo(point);
      mapController.setZoom(16);
      mapView.invalidate();
    }
    else
    {
        System.out.println("OnLocationChanged value is null");
    }
  }



@Override
public void onProviderDisabled(String arg0) {
    // TODO Auto-generated method stub

}


@Override
public void onProviderEnabled(String arg0) {
    // TODO Auto-generated method stub

}


@Override
public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
    // TODO Auto-generated method stub

}
}
@Override
protected boolean isRouteDisplayed() {
    // TODO Auto-generated method stub
    return false;
}





}

I dont know where i have done mistake.Its not even entering into GPSLocationListener class. please help me.. Thanks in advance.

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Check is your gps active. Change min distance and min time. For example:

requestLocationUpdates(LocationManager.GPS_PROVIDER,10,30,locationListener);

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Are you testing on a device or emulator? Because on the emulator you have to manually input coordinates.

Also, make sure one of the follwing is in your manifest file:

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

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Recent Google Maps V2 lets you implement OnMyLocationChangeListener, so you don't need to implement (and set) a custom LocationSource.

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Please add this line of code also. It worked for me.

LocationManager.requestLocationUpdates(LocationManager.NETWORk_PROVIDER,0,0,locationListener);

If it still doesn't work can you please give the Log Details?