How to add appointment for the selected resources using appointment editor in the Flutter Calendar
In the Flutter event calendar, you can add the appointment to the selected resource using the resource property of CalendarResource.
STEP 1: In initState(), set the default values for the calendar.
CalendarController _controller;
List<String> _eventNameCollection;
@override
void initState() {
_controller = CalendarController();
_addResourceDetails();
_employeeCollection = <CalendarResource>[];
_addResources();
_events = DataSource(_getMeetingDetails(), _employeeCollection);
_selectedAppointment = null;
_selectedColorIndex = 0;
_selectedTimeZoneIndex = 0;
_selectedResourceIndex = 0;
_subject = '';
_notes = '';
super.initState();
}
STEP 2: Create a resource view by using the displayName, color, id and image properties of CalendarResource.
void _addResources() {
Random random = Random();
for (int i = 0; i < _nameCollection.length; i++) {
_employeeCollection.add(CalendarResource(
displayName: _nameCollection[i],
id: '000' + i.toString(),
color: Color.fromRGBO(
random.nextInt(255), random.nextInt(255), random.nextInt(255), 1),
));
}
}
STEP 3: You can add the resources to appointment by using the resources property of CalendarDataSource.
class DataSource extends CalendarDataSource {
DataSource(List<Meeting> source, List<CalendarResource> resourceColl) {
appointments = source;
resources = resourceColl;
}
}
STEP 4: Create a resource-picker class with the ListView.builder widget for the selecting resources.
child: ListView.builder(
padding: const EdgeInsets.all(0),
itemCount: _colorCollection.length - 1,
itemBuilder: (BuildContext context, int index) {
return ListTile(
contentPadding: const EdgeInsets.all(0),
title: Text(_nameCollection[index]),
onTap: () {
setState(() {
_selectedResourceIndex = index;
});
// ignore: always_specify_types
Future.delayed(const Duration(milliseconds: 200), () {
// When task is over, close the dialog
Navigator.pop(context);
});
},
);
},
)),
STEP 5: Add an appointment for the selected resource
IconButton(
padding: const EdgeInsets.fromLTRB(5, 0, 5, 0),
icon: const Icon(
Icons.done,
color: Colors.white,
),
onPressed: () {
final List<Meeting> meetings = <Meeting>[];
if (_selectedAppointment != null) {
_events.appointments.removeAt(
_events.appointments.indexOf(_selectedAppointment));
_events.notifyListeners(CalendarDataSourceAction.remove,
<Meeting>[]..add(_selectedAppointment));
}
meetings.add(Meeting(
from: _startDate,
to: _endDate,
background: _colorCollection[_selectedColorIndex],
startTimeZone: _selectedTimeZoneIndex == 0
? ''
: _timeZoneCollection[_selectedTimeZoneIndex],
endTimeZone: _selectedTimeZoneIndex == 0
? ''
: _timeZoneCollection[_selectedTimeZoneIndex],
description: _notes,
isAllDay: _isAllDay,
eventName: _subject == '' ? '(No title)' : _subject,
ids: <String>[_employeeCollection[_selectedResourceIndex].id]
));
_events.appointments.add(meetings[0]);
_events.notifyListeners(
CalendarDataSourceAction.add, meetings);
_selectedAppointment = null;
Navigator.pop(context);
})
STEP 6: Assign events to the dataSource property of the calendar.
child: SafeArea( child: SfCalendar( view: CalendarView.timelineDay, allowedViews: <CalendarView>[ CalendarView.timelineDay, CalendarView.timelineWeek, CalendarView.timelineWorkWeek, CalendarView.timelineMonth ], dataSource: _events, onTap: onCalendarTapped, monthViewSettings: MonthViewSettings( appointmentDisplayMode: MonthAppointmentDisplayMode.appointment), ))));
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I hope you enjoyed learning about how to add appointment for the selected resources using appointment editor in the Flutter Calendar.
You can refer to our Flutter Calendar feature tour 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 example to understand how to create and manipulate data.
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