MainActivity.java

    private void fillList(boolean onlyEmpty) {

        Calendar calendarInstance = Calendar.getInstance();
        calendarInstance.setTime(TimeUtils.getWeekStartDate(new Date()));

        List<Meal> meals = mealContract.getRandomMeals(dbHelper, getPlanLength());

        for (Meal meal : meals) {
            if (!onlyEmpty || dinnerAdapter.isDayEmpty(calendarInstance.getTime())) {
                dinnerContract.insert(dbHelper, meal.getId(), calendarInstance.getTime());
            }
            calendarInstance.add(Calendar.DATE, 1);
        }

        dinnerAdapter.updateResults();
    }