i write a map viewer and i want to get Latitude and Longitude from user, then show him the location.
i use menu for this work. but i don't know how show him something to enter the values. this is my code.

```
public class main extends MapActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    MapView view = (MapView) findViewById(R.id.themap);
    view.setBuiltInZoomControls(true);

    final MapController control = view.getController();

    LocationManager manager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
    LocationListener listener = new LocationListener() {

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
            // TODO Auto-generated method stub

        }

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

        }

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

        }

        @Override
        public void onLocationChanged(Location location) {
            control.setCenter(new GeoPoint((int)location.getLatitude(), (int)location.getLongitude()));
        }
    };
    manager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, listener);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    return super.onOptionsItemSelected(item);
}

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

```

}

so i have 2 questions. first how can i create a menu for my locations. i must use context menu or something else.
second, if i get locations, i can enter them directly to my Latitude and Longitude?
in my code i use the default location of user.