Hey Guys,

I've got a question on making an navigation app more faster and more stable.

The basic layer of my app is a simple mapview, covered with several overlays (2 markers for start and destination and one for the route).

My idea is to implement a thread to display the route, so that the app won't hang up during the calculation of a more complex route (like it does right now).

After implementing the thread there are no updates shows any more, maybe you can help me with a short glance at an excerpt of my code below:

    private class MyLocationListener implements LocationListener {
    @Override
    public void onLocationChanged(Location loc) {
        posUser = new GeoPoint((int) (loc.getLatitude() * 1E6), (int) (loc
                .getLongitude() * 1E6));

        new Thread(){
        public void run(){
            mapView.invalidate();

            // Erase old overlays
            mapView.getOverlays().clear();

            // Draw updated overlay elements and adjust basic map settings
            updateText();
            if(firstRefresh){
                adjustMap();
                firstRefresh = false;
            }
            getAndPaintRoute();
            drawMarkers();
        }
        };
    }

Some features have been summarized to a method like "drawMarkers()" or "updateText()"...(they don't need any more attention ;-))