public void refreshAdapters(int position) {
// Get adapters to refresh
CaldroidGridAdapter currentAdapter = caldroidGridAdapters.get(getCurrent(position));
CaldroidGridAdapter prevAdapter = caldroidGridAdapters.get(getPrevious(position));
CaldroidGridAdapter nextAdapter = caldroidGridAdapters.get(getNext(position));
if (position == currentPage) {
// Refresh current adapter
currentAdapter.setAdapterDateTime(currentDateTime);
currentAdapter.notifyDataSetChanged();
// Refresh previous adapter
prevAdapter.setAdapterDateTime(
currentDateTime.minus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay));
prevAdapter.notifyDataSetChanged();
// Refresh next adapter
nextAdapter.setAdapterDateTime(
currentDateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay));
nextAdapter.notifyDataSetChanged();
}
// Detect if swipe right or swipe left
// Swipe right
else if (position > currentPage) {
// Update current date time to next month
currentDateTime = currentDateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
// Refresh the adapter of next gridview
nextAdapter.setAdapterDateTime(
currentDateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay));
nextAdapter.notifyDataSetChanged();
}
// Swipe left
else {
// Update current date time to previous month
currentDateTime = currentDateTime.minus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
// Refresh the adapter of previous gridview
prevAdapter.setAdapterDateTime(
currentDateTime.minus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay));
prevAdapter.notifyDataSetChanged();
}
// Update current page
currentPage = position;
}
/**
* Move calendar to specified dateTime, with animation
*
* @param dateTime
*/
public void moveToDateTime(DateTime dateTime) {
DateTime firstOfMonth = new DateTime(year, month, 1, 0, 0, 0, 0);
DateTime lastOfMonth = firstOfMonth.getEndOfMonth();
// To create a swipe effect
// Do nothing if the dateTime is in current month
// Calendar swipe left when dateTime is in the past
if (dateTime.lt(firstOfMonth)) {
// Get next month of dateTime. When swipe left, month will
// decrease
DateTime firstDayNextMonth = dateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
// Refresh adapters
pageChangeListener.setCurrentDateTime(firstDayNextMonth);
int currentItem = dateViewPager.getCurrentItem();
pageChangeListener.refreshAdapters(currentItem);
// Swipe left
dateViewPager.setCurrentItem(currentItem - 1);
}
// Calendar swipe right when dateTime is in the future
else if (dateTime.gt(lastOfMonth)) {
// Get last month of dateTime. When swipe right, the month will
// increase
DateTime firstDayLastMonth =
dateTime.minus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
// Refresh adapters
pageChangeListener.setCurrentDateTime(firstDayLastMonth);
int currentItem = dateViewPager.getCurrentItem();
pageChangeListener.refreshAdapters(currentItem);
// Swipe right
dateViewPager.setCurrentItem(currentItem + 1);
}
}
/**
* Setup 4 pages contain date grid views. These pages are recycled to use memory efficient
*
* @param view
*/
private void setupDateGridPages(View view) {
// Get current date time
DateTime currentDateTime = new DateTime(year, month + 1, 1, 0, 0, 0, 0);
// Set to pageChangeListener
pageChangeListener = new DatePageChangeListener();
pageChangeListener.setCurrentDateTime(currentDateTime);
// Setup adapters for the grid views
// Current month
CaldroidGridAdapter adapter0 =
getNewDatesGridAdapter(currentDateTime.getMonth(), currentDateTime.getYear());
// Setup dateInMonthsList
dateInMonthsList = adapter0.getDatetimeList();
// Next month
DateTime nextDateTime = currentDateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
CaldroidGridAdapter adapter1 =
getNewDatesGridAdapter(nextDateTime.getMonth(), nextDateTime.getYear());
// Next 2 month
DateTime next2DateTime = nextDateTime.plus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
CaldroidGridAdapter adapter2 =
getNewDatesGridAdapter(next2DateTime.getMonth(), next2DateTime.getYear());
// Previous month
DateTime prevDateTime =
currentDateTime.minus(0, 1, 0, 0, 0, 0, 0, DateTime.DayOverflow.LastDay);
CaldroidGridAdapter adapter3 =
getNewDatesGridAdapter(prevDateTime.getMonth(), prevDateTime.getYear());
// Add to the array of adapters
datePagerAdapters.add(adapter0);
datePagerAdapters.add(adapter1);
datePagerAdapters.add(adapter2);
datePagerAdapters.add(adapter3);
// Set adapters to the pageChangeListener so it can refresh the adapter
// when page change
pageChangeListener.setCaldroidGridAdapters(datePagerAdapters);
// Setup InfiniteViewPager and InfinitePagerAdapter. The
// InfinitePagerAdapter is responsible
// for reuse the fragments
dateViewPager = (InfiniteViewPager) view.findViewById(R.id.months_infinite_pager);
// Set enable swipe
dateViewPager.setEnabled(enableSwipe);
// Set if viewpager wrap around particular month or all months (6 rows)
dateViewPager.setSixWeeksInCalendar(sixWeeksInCalendar);
// Set the numberOfDaysInMonth to dateViewPager so it can calculate the
// height correctly
dateViewPager.setDatesInMonth(dateInMonthsList);
// MonthPagerAdapter actually provides 4 real fragments. The
// InfinitePagerAdapter only recycles fragment provided by this
// MonthPagerAdapter
final MonthPagerAdapter pagerAdapter = new MonthPagerAdapter(getChildFragmentManager());
// Provide initial data to the fragments, before they are attached to
// view.
fragments = pagerAdapter.getFragments();
for (int i = 0; i < NUMBER_OF_PAGES; i++) {
DateGridFragment dateGridFragment = fragments.get(i);
CaldroidGridAdapter adapter = datePagerAdapters.get(i);
dateGridFragment.setGridAdapter(adapter);
dateGridFragment.setOnItemClickListener(getDateItemClickListener());
dateGridFragment.setOnItemLongClickListener(getDateItemLongClickListener());
}
// Setup InfinitePagerAdapter to wrap around MonthPagerAdapter
InfinitePagerAdapter infinitePagerAdapter = new InfinitePagerAdapter(pagerAdapter);
// Use the infinitePagerAdapter to provide data for dateViewPager
dateViewPager.setAdapter(infinitePagerAdapter);
// Setup pageChangeListener
dateViewPager.setOnPageChangeListener(pageChangeListener);
}