How to add the appointments using the onTap callback in the Flutter Calendar?

In the Flutter Event Calendar, you can add the appointments when cells are tapped by utilizing the onTap callback of the Calendar.

First, set up the default values in the initState() method:

CalendarDataSource? _dataSource;
 
@override
void initState() {
  _dataSource = _getDataSource();
  super.initState();
}

Then, implement the onTap callback to add appointments to the tapped cell.

void calendarTapped(CalendarTapDetails calendarTapDetails) {
  Appointment app = Appointment(
      startTime: calendarTapDetails.date!,
      endTime: calendarTapDetails.date!.add(Duration(hours: 1)),
      subject: 'Tapped appointment',
      color: Colors.greenAccent);
  _dataSource!.appointments!.add(app);
    _dataSource.notifyListeners(
        CalendarDataSourceAction.add, <Appointment>[app]);
}

View the GitHub sample here

Conclusion

I hope you enjoyed learning about how to add the appointments using the onTap callback in the Flutter Calendar.

You can refer to our Flutter Calendar feature tour page to learn about its other groundbreaking feature representations. You can explore our documentation to understand how to present and manipulate data.

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