@Override
    public void initialize() {
        /*Invoking can be delayed by delaying the draw of GlSurfaceView component on the screen*/
        if (legacyApplication == null) {
            return;
        }
        legacyApplication.initialize();
        /*log for display*/
        jmeSurfaceViewLogger.log(Level.INFO, "JmeGame started in GLThread Asynchronously.......");
    }
A state change observer to the holder Activity life cycle, used to keep this android view up-to-date with the holder activity life cycle.

@param source the life cycle source, aka the observable object.
@param event  the fired event by the observable object, which is dispatched and sent to the observers.
jme3-android/src/main/java/com/jme3/view/surfaceview/JmeSurfaceView.java