How I can get current geographical location of the device programatically

Question

I need to get the device's current geographical location.

Scenario : if I am in US..:

my device location should be US

Same as in the case, when I am in UK :

my device location should be UK

I need the sample code for finding this geographical location.(location determined by Network Location Provider)

Answer 1

If you want to get the current country code, you want to look into Geocoder which you can use to get an Address which provides a getCountryCode method. Something like this

Geocoder geocoder = new Geocoder(this);
List<Address> addresses = null;

try {
    addresses = geocoder.getFromLocation(
        location.getLatitude(),
        location.getLongitude(), 1);
} catch (IOException e) {
    e.printStackTrace();
}

if (addresses != null && addresses.size() > 0) {
    Address address = addresses.get(0);
    String countryCode = address.getCountryCode();
}

As far as getting the current latitude and longitude, there is plenty of information out there on how to do that

• How do I get the current GPS location programmatically in Android?
• What is the simplest and most robust way to get the user's current location on Android?
• http://developer.android.com/guide/topics/location/index.html

Answer 2

Here is the code

Main MapActivity

  public class WhereIam extends MapActivity {
MapController mapController;
MyPositionOverlay positionOverlay;

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

    myMapView.setSatellite(true);


    myMapView.setBuiltInZoomControls(true);
    mapController=myMapView.getController();
    mapController.setZoom(17);
    positionOverlay = new MyPositionOverlay();
    List<Overlay> overlays = myMapView.getOverlays();
    overlays.add(positionOverlay);

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

        Criteria criteria = new Criteria();
        criteria.setAccuracy(Criteria.ACCURACY_FINE);
        criteria.setAltitudeRequired(false);
        criteria.setBearingRequired(false);
        criteria.setCostAllowed(true);
        criteria.setPowerRequirement(Criteria.POWER_LOW);
        String provider = locationManager.getBestProvider(criteria, true);
        Location location = locationManager.getLastKnownLocation(provider);

        final LocationListener locationListener = new LocationListener() {
            public void onLocationChanged(Location location) {
            updateWithNewLocation(location);
            }
            public void onProviderDisabled(String provider){
            updateWithNewLocation(null);
            }
            public void onProviderEnabled(String provider){ }
            public void onStatusChanged(String provider, int status,
            Bundle extras){ }
            };

        updateWithNewLocation(location);
        locationManager.requestLocationUpdates(provider, 2000, 10,
                locationListener);  
}
private void updateWithNewLocation(Location location) {
    if(location!=null)  {
        // Update the map location.
        positionOverlay.setLocation(location);
        Double geoLat = location.getLatitude()*1E6;
        Double geoLng = location.getLongitude()*1E6;
        GeoPoint point = new GeoPoint(geoLat.intValue(),
        geoLng.intValue());
        mapController.animateTo(point);

    }
}   
@Override
protected boolean isRouteDisplayed() {

    return true;
}

Another MyPositionOverlay class

public class MyPositionOverlay extends Overlay {
Location location;
private final int mRadius = 5;
@Override
public void draw(Canvas canvas, MapView mapView, boolean shadow) {
  Projection projection = mapView.getProjection();
  if (shadow == false) {
  // Get the current location
  Double latitude = location.getLatitude()*1E6;
  Double longitude = location.getLongitude()*1E6;
  GeoPoint geoPoint;
  geoPoint = new GeoPoint(latitude.intValue(),longitude.intValue());
  // Convert the location to screen pixels
  Point point = new Point();
  projection.toPixels(geoPoint, point);
  RectF oval = new RectF(point.x - mRadius, point.y - mRadius,
  point.x + mRadius, point.y + mRadius);
  // Setup the paint
  Paint paint = new Paint();
  paint.setARGB(250, 255, 0, 0);
  paint.setAntiAlias(true);
  paint.setFakeBoldText(true);
  Paint backPaint = new Paint();
  backPaint.setARGB(175, 50, 50, 50);
  backPaint.setAntiAlias(true);
  RectF backRect = new RectF(point.x + 2 + mRadius,
  point.y - 3*mRadius,
  point.x + 65, point.y + mRadius);
  // Draw the marker
  canvas.drawOval(oval, paint);
  canvas.drawRoundRect(backRect, 5, 5, backPaint);
  canvas.drawText("Here I Am", point.x + 2*mRadius, point.y, paint);
  }
  super.draw(canvas, mapView, shadow);
  }
  @Override
 public boolean onTap(GeoPoint point, MapView mapView) {
 return false;
}
 public Location getLocation() {
  return location;
  }
  public void setLocation(Location location) {
  this.location = location;
  }
}