refreshNavigationBar method

activity.java

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

protected void refreshNavigationBar() {
            List<NavigationItem> items = new ArrayList<NavigationItem>();
            try {
                for (final Course course : courseManager.getActiveCourses()) {
                    items.add(new NavigationItem(R.drawable.ic_action_go_to_today, course.getName(), new NavigationItem.OnItemSelectedListener() {
                        @Override
                        public void selected() {
                            Intent activity = new Intent(getApplicationContext(), DigitalNotebookActivity.class);
                            activity.putExtra(Constants.COURSE_ID_PARAM, course.getId().intValue());
                            startActivity(activity);
                        }
                    }));
                }
            } catch (SQLException e) {
                Log.e("HomeActivity", "Error to load active courses.", e);
            }
           
            mDrawerListView.setAdapter(new NavigationItemAdapter(this, items));
}