Android: Setting Zoom Level in Google Maps to include all Marker points

Yet another approach with Android Map API v2:

private void fixZoom() {
    List<LatLng> points = route.getPoints(); // route is instance of PolylineOptions 

    LatLngBounds.Builder bc = new LatLngBounds.Builder();

    for (LatLng item : points) {
        bc.include(item);
    }

    map.moveCamera(CameraUpdateFactory.newLatLngBounds(bc.build(), 50));
}