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How to clear the appointments in month agenda view using onViewChange callback in the Flutter Calendar

Platform: Flutter |
Control: SfCalendar |
Published Date: November 17, 2020 |
Last Revised Date: May 5, 2021

In the Flutter Event Calendar, you can clear the selected date appointments using onViewChanged callback of the calendar.

STEP 1: Inside the state initialize the calendar controller.

final CalendarController _calendarController = CalendarController();

STEP 2: In onViewChanged callback set the selected date value as null for clearing the selected date appointments.

void calendarViewChanged(ViewChangedDetails viewChangedDetails) {
  SchedulerBinding.instance!.addPostFrameCallback((timeStamp) {
    _calendarController.selectedDate = null;

STEP 3: Assign _calendarController to controller property of the calendar.

child: SfCalendar(
  view: CalendarView.month,
  controller: _calendarController,
  dataSource: _getDataSource(),
  onViewChanged: calendarViewChanged,
  monthViewSettings: MonthViewSettings(showAgenda: true),

View sample in GitHub

agenda appointment gif


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