getOccurrenceAppointment method

Returns the occurrence appointment for the given pattern appointment at the specified date.

If there is no appointment occurring on the date specified, null is returned.

patternAppointment - required - The pattern appointment is the start appointment in a recurrence series from which the occurrence appointments are cloned with pattern appointment characteristics.

date - required - The date on which the occurrence appointment is requested.

See also:

• Appointment, the object to hold the data for the event in the calendar.
• getVisibleAppointments, which allows to get the appointment collection between the given date range.
• getPatternAppointment, which allows to get the pattern appointment of the given occurrence appointment in calendar.
• SfCalendar.getRecurrenceDateTimeCollection, which used to get the recurrence date time collection for the given recurrence rule.

class MyAppState extends State<MyApp>{
  late CalendarController _calendarController;
  late _AppointmentDataSource _dataSource;
  late Appointment recurrenceApp;

  @override
  initState(){
    _calendarController = CalendarController();
    _dataSource = _getCalendarDataSource();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SfCalendar(
          view: CalendarView.month,
          controller: _calendarController,
          dataSource: _dataSource,
          initialDisplayDate: DateTime(2020,11,27,9),
          onTap: (CalendarTapDetails details) {
            final DateTime? date = details.date;
           final Appointment? occurrenceAppointment =
            _dataSource.getOccurrenceAppointment(
                                                recurrenceApp, date!, '');
          },
        ),
     ),
    );
  }
  _AppointmentDataSource _getCalendarDataSource() {
    final List<Appointment> appointments = <Appointment>[];
   recurrenceApp = Appointment(
      startTime: DateTime(2020,11,27,9),
      endTime: DateTime(2020,11,27,9).add(const Duration(hours: 2)),
      subject: 'Meeting',
      color: Colors.cyanAccent,
      startTimeZone: '',
      endTimeZone: '',
     recurrenceRule: 'FREQ=DAILY;INTERVAL=2;COUNT=5',
    );
    appointments.add(recurrenceApp);
    appointments.add(Appointment(
        startTime: DateTime(2020,11,28,5),
        endTime: DateTime(2020,11,30,7),
        subject: 'Discussion',
        color: Colors.orangeAccent,
        startTimeZone: '',
        endTimeZone: '',
        isAllDay: true
    ));
    return _AppointmentDataSource(appointments);
  }
}
class _AppointmentDataSource extends CalendarDataSource {
  _AppointmentDataSource(List<Appointment> source){
    appointments = source;
  }
}