private void configureProximityNotifications() {
        // reconfigure, but only if necessary
        proximityNotification = Settings.isGeneralProximityNotificationActive() ? proximityNotification != null ? proximityNotification : new ProximityNotification(true, false) : null;
    }
Get the current map state from the map view if it exists or from the mapStateIntent field otherwise.

@return the current map state as an array of int, or null if no map state is available
main/src/main/java/cgeo/geocaching/maps/mapsforge/v6/NewMap.java