@ContentView(R.layout.map)
public class MyMapActivity extends RoboMapActivity {

@InjectView(R.id.map)
private MapView map;

private List<Overlay> mapOverlays;
private MyLocationOverlay compass;
private TestOverlay testOverlay;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    map.setBuiltInZoomControls(true);
    mapOverlays = map.getOverlays();
    compass = new MyLocationOverlay(this, map);
    testOverlay = new TestOverlay();
}

@Override
protected void onResume() {
    super.onResume();
    compass.enableCompass();
    refreshMap();
}

private void refreshMap() {
    mapOverlays.clear();
    mapOverlays.add(testOverlay);
}

@Override
protected void onPause() {
    compass.disableCompass();
    super.onPause();
}

@Override
protected boolean isRouteDisplayed() {
    return false;
}
}

public class TestOverlay extends Overlay {

@Override
public void draw(Canvas arg0, MapView arg1, boolean arg2) {
    System.out.println("drawing...");
    super.draw(arg0, arg1, arg2);
}
}

// compass.enableCompass();