Positing user current location and show it in Google maps

Question

I am developing an android application that contains 3 activities and one of them is map. I am using google maps

what I want:

1. When the user opens th

Answer 1

Remove your method onCreate and add this code:

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.map);
    initMap(); // This is the method which initialize the map

    locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,
            0, new GeoUpdateHandler());

    Drawable drawable = this.getResources().getDrawable(R.drawable.point);
    itemizedoverlay = new CustomPinpoint(drawable);
    createMarker();
}

@Override
public void onResume()
{
    super.onResume();
    try
    {
        initMyLocation();
    }catch(Exception e){}
}


/**
 * Inits the map.
 */
protected void initMap()
{
    mapView = (MyMapView) findViewById(R.id.mapView);

    mapView.setBuiltInZoomControls(true);
    mapView.setSatellite(true);
    mapView.setStreetView(false);
    mapController = mapView.getController();

    mapOverlay = new MapOverlay();
    List overlays = mapView.getOverlays();

    overlays.add(mapOverlay);

    mapController.setZoom(14);

    mapView.invalidate();
}

/**
 * Initialises the MyLocationOverlay and adds it to the overlays of the map.
 */
public void initMyLocation() {
    try
    {
        LocationManager lm = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
        Location l = LocationService.getLastKnownLocation(lm);
        int lat = (int)(l.getLatitude()*1E6);
        int lng = (int)(l.getLongitude()*1E6);
        mapController.setCenter(new GeoPoint(lat , lng));

        myLocOverlay = new MyLocationOverlay(this, mapView);
        myLocOverlay.enableMyLocation();
        mapView.getOverlays().add(myLocOverlay);
        mapController.setCenter(myLocOverlay.getMyLocation());
    }catch(NullPointerException e){}

    findMe();
}




/**
 * This method will animate to my current position
 */
public void findMe()
{
    try
    {
        mapController.animateTo(myLocOverlay.getMyLocation());
    }catch(NullPointerException e){}
}

Then to store the Overlays for future use you can either use SharedPreferences or SQLite. There are loads of tutorials for each of them.