Java 类android.support.v4.view.BetterViewPager 实例源码

/**
 * This is abhorrent...
 *
 * @return
 * @throws NoSuchFieldException
 * @throws IllegalAccessException
 * @throws NoSuchMethodException
 * @throws InvocationTargetException
 */
@Deprecated
private int getWeekCountBasedOnMode() throws NoSuchFieldException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
    Field calendarModeField = MaterialCalendarView.class.getDeclaredField("calendarMode");
    calendarModeField.setAccessible(true);
    CalendarMode calendarMode = (CalendarMode) calendarModeField.get(this);

    Field mDynamicHeightEnabledField = MaterialCalendarView.class.getDeclaredField("mDynamicHeightEnabled");
    mDynamicHeightEnabledField.setAccessible(true);
    boolean mDynamicHeightEnabled = (boolean) mDynamicHeightEnabledField.get(this);

    Field adapterField = MaterialCalendarView.class.getDeclaredField("adapter");
    adapterField.setAccessible(true);
    Object adapter = adapterField.get(this);

    Field pagerField = MaterialCalendarView.class.getDeclaredField("pager");
    pagerField.setAccessible(true);
    BetterViewPager pager = (BetterViewPager) pagerField.get(this);

    Field weekCountField = CalendarMode.class.getDeclaredField("visibleWeeksCount");
    weekCountField.setAccessible(true);
    int weekCount = (int) weekCountField.get(calendarMode);

    boolean isInMonthsMode = calendarMode.equals(CalendarMode.MONTHS);
    if (isInMonthsMode && mDynamicHeightEnabled && adapter != null && pager != null) {
        Method getItemMethod = adapter.getClass().getDeclaredMethod("getItem", CalendarDay.class);
        Object currentItem = getItemMethod.invoke(adapter, pager.getClass().getMethod("getCurrentItem").invoke(pager));
        Calendar cal = (Calendar) currentItem.getClass().getMethod("getCalendar").invoke(currentItem);
        cal = (Calendar) cal.clone();
        //(Calendar) adapter.getItem(pager.getCurrentItem()).getCalendar().clone();
        cal.set(Calendar.DAY_OF_MONTH, cal.getActualMaximum(Calendar.DAY_OF_MONTH));
        //noinspection ResourceType
        cal.setFirstDayOfWeek(getFirstDayOfWeek());
        weekCount = cal.get(Calendar.WEEK_OF_MONTH);
    }
    return weekCount + DAY_NAMES_ROW;
}