/// <summary>
/// Setup 4 pages contain date grid views. These pages are recycled to use
/// memory efficient.
/// </summary>
/// <param name="view">View.</param>
private void SetupDateGridPages(View view)
{
var currentDateTime = new DateTime(_year, _month, 1);
_datePageChangeListener = new DatePageChangeListener(this);
_datePageChangeListener.CurrentDateTime = currentDateTime;
var currentMonthGridAdapter = CreateCalendarGridAdapter(currentDateTime.Year, currentDateTime.Month);
_daysInMonths = currentMonthGridAdapter.DateTimes;
var nextMonthDateTime = CalendarHelper.LastDateTimeOfNextMonth(currentDateTime);
var nextMonthGridAdapter = CreateCalendarGridAdapter(nextMonthDateTime.Year, nextMonthDateTime.Month);
var secondNextMonthDateTime = CalendarHelper.LastDateTimeOfNextMonth(nextMonthDateTime);
var secondNextMonthGridAdapter = CreateCalendarGridAdapter(secondNextMonthDateTime.Year, secondNextMonthDateTime.Month);
var prevMonthDateTime = CalendarHelper.LastDateTimeOfPreviousMonth(currentDateTime);
var prevMonthGridAdapter = CreateCalendarGridAdapter(prevMonthDateTime.Year, prevMonthDateTime.Month);
_calendarGridAdapters.Add(currentMonthGridAdapter);
_calendarGridAdapters.Add(nextMonthGridAdapter);
_calendarGridAdapters.Add(secondNextMonthGridAdapter);
_calendarGridAdapters.Add(prevMonthGridAdapter);
_datePageChangeListener.CalendarGridAdapters = _calendarGridAdapters;
_infiniteDateViewPager = view.FindViewById <InfiniteViewPager>(Resource.Id.months_infinite_pager);
_infiniteDateViewPager.IsEnabled = _isSwipeEnabled;
_infiniteDateViewPager.IsMaxWeekPerMonth = _isMaxWeekPerMonth;
_infiniteDateViewPager.DaysInMonth = _daysInMonths;
var monthPagerAdapter = new MonthPagerAdapter(ChildFragmentManager);
_dateGridFragments = monthPagerAdapter.DateGridFragmentList;
for (var i = 0; i < NUMBER_OF_PAGES; i++)
{
var dateGridFragment = _dateGridFragments[i];
var calendarGridAdapter = _calendarGridAdapters[i];
dateGridFragment.GridViewResource = ResourceGridView();
dateGridFragment.CalendarGridAdapter = calendarGridAdapter;
dateGridFragment.OnItemClickEvent += OnDateGridFragmentItemClicked;
dateGridFragment.OnItemLongClickEvent += OnDateGridFragmentItemLongClicked;
}
var infinitePagerAdapter = new InfinitePagerAdapter(monthPagerAdapter);
_infiniteDateViewPager.Adapter = infinitePagerAdapter;
_infiniteDateViewPager.AddOnPageChangeListener(_datePageChangeListener);
}
public void UpdateAdapters(int position)
{
var currentAdapter = CalendarGridAdapters[Current(position)];
var prevAdapter = CalendarGridAdapters[Previous(position)];
var nextAdapter = CalendarGridAdapters[Next(position)];
if (position == CurrentPage)
{
currentAdapter.SetAdapterDateTime(_dateTime);
currentAdapter.NotifyDataSetChanged();
var prevDateTime = CalendarHelper.LastDateTimeOfPreviousMonth(_dateTime);
prevAdapter.SetAdapterDateTime(prevDateTime);
prevAdapter.NotifyDataSetChanged();
var nextDateTime = CalendarHelper.LastDateTimeOfNextMonth(_dateTime);
nextAdapter.SetAdapterDateTime(nextDateTime);
nextAdapter.NotifyDataSetChanged();
}
// Swipe right
else if (position > CurrentPage)
{
_dateTime = CalendarHelper.LastDateTimeOfNextMonth(_dateTime);
var nextDateTime = CalendarHelper.LastDateTimeOfNextMonth(_dateTime);
nextAdapter.SetAdapterDateTime(nextDateTime);
nextAdapter.NotifyDataSetChanged();
}
// Swipe left
else
{
_dateTime = CalendarHelper.LastDateTimeOfPreviousMonth(_dateTime);
var prevDateTime = CalendarHelper.LastDateTimeOfPreviousMonth(_dateTime);
prevAdapter.SetAdapterDateTime(prevDateTime);
prevAdapter.NotifyDataSetChanged();
}
CurrentPage = position;
}