How to create timetable using Flutter Event Calendar?
You can create a time table by adding appointments for specific weekdays using the onViewChanged callback in Flutter Calendar.
In the initState() method, set the default values for calendar.
CalendarDataSource _dataSource = _DataSource(<Appointment>[]);
List<String> _subjectCollection = <String>[];
List<DateTime> _startTimeCollection = <DateTime>[];
List<DateTime> _endTimeCollection = <DateTime>[];
List<Color> _colorCollection = <Color>[];
List<TimeRegion> _specialTimeRegion = <TimeRegion>[];
@override
void initState() {
_getSubjectCollection();
_getStartTimeCollection();
_getEndTimeCollection();
_getColorCollection();
super.initState();
}
Use the onViewchanged to check if the visible date's weekday is not a weekend day, then add appointments for weekdays:
void viewChanged(ViewChangedDetails viewChangedDetails) {
List<DateTime> visibleDates = viewChangedDetails.visibleDates;
List<TimeRegion> _timeRegion = <TimeRegion>[];
List<Appointment> appointments = <Appointment>[];
_dataSource.appointments!.clear();
for (int i = 0; i < visibleDates.length; i++) {
if (visibleDates[i].weekday == 6 || visibleDates[i].weekday == 7) {
continue;
}
_timeRegion.add(TimeRegion(
startTime: DateTime(visibleDates[i].year, visibleDates[i].month,
visibleDates[i].day, 13, 0, 0),
endTime: DateTime(visibleDates[i].year, visibleDates[i].month,
visibleDates[i].day, 14, 0, 0),
text: 'Break',
enablePointerInteraction: false));
SchedulerBinding.instance!.addPostFrameCallback((timeStamp) {
setState(() {
_specialTimeRegion = _timeRegion;
});
});
for (int j = 0; j < _startTimeCollection.length; j++) {
DateTime startTime = new DateTime(
visibleDates[i].year,
visibleDates[i].month,
visibleDates[i].day,
_startTimeCollection[j].hour,
_startTimeCollection[j].minute,
_startTimeCollection[j].second);
DateTime endTime = new DateTime(
visibleDates[i].year,
visibleDates[i].month,
visibleDates[i].day,
_endTimeCollection[j].hour,
_endTimeCollection[j].minute,
_endTimeCollection[j].second);
Random random = Random();
appointments.add(Appointment(
startTime: startTime,
endTime: endTime,
subject: _subjectCollection[random.nextInt(9)],
color: _colorCollection[random.nextInt(9)]));
}
}
for (int i = 0; i < appointments.length; i++) {
_dataSource.appointments!.add(appointments[i]);
}
_dataSource.notifyListeners(
CalendarDataSourceAction.reset, _dataSource.appointments!);
}
Then assign the _dataSource to dataSource property of the calendar.
child: SfCalendar( dataSource: _dataSource, view: CalendarView.week, allowedViews: [ CalendarView.day, CalendarView.week, CalendarView.workWeek, CalendarView.month, CalendarView.timelineDay, CalendarView.timelineWeek, CalendarView.timelineWorkWeek, CalendarView.timelineMonth, CalendarView.schedule ], onViewChanged: viewChanged, specialRegions: _specialTimeRegion, ),
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Conclusion
I hope you enjoyed learning about how to create timetable using Flutter Event Calendar.
You can refer to our Flutter Calendar featuretour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started for configuration specifications. You can also explore our Flutter Calendar demo to understand how to create and manipulate data.
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