calendar_view

Build calendar_view

A Flutter package allows you to easily implement all calendar UI and calendar event functionality.

For web demo visit Calendar View Example.

Preview

Preview

Installing

  1. Add dependencies to pubspec.yaml

    Get the latest version in the ‘Installing’ tab on pub.dev

    dependencies:
    calendar_view: <latest-version>

  2. Run pub get.

    flutter pub get

  3. Import package.

    import 'package:calendar_view/calendar_view.dart';

Implementation

  1. Wrap MaterialApp with CalendarControllerProvider and assign EventController to it.

    CalendarControllerProvider(
    controller: EventController(),
    child: MaterialApp(
        // Your initialization for material app.
    ),
)

  2. Add calendar views.

    For Month View

    Scaffold(
    body: MonthView(),
);

    For Day View

    Scaffold(
    body: DayView(),
);

    For Week view

    Scaffold(
    body: WeekView(),
);

    For more info on properties visit documentation.

  3. Use controller to add or remove events.

    To Add event:

    final event = CalendarEventData(
    date: DateTime(2021, 8, 10),
    event: "Event 1",
);

CalendarControllerProvider.of(context).controller.add(event);

    To Add events in range of dates:

    final event = CalendarEventData(
        date: DateTime(2021, 8, 10),
        endDate: DateTime(2021,8,15),
        event: "Event 1",
    );

    CalendarControllerProvider.of(context).controller.add(event);

    To Remove event:

    CalendarControllerProvider.of(context).controller.remove(event);

    As soon as you add or remove events from the controller, it will automatically update the calendar view assigned to that controller. See, Use of EventController for more info

  4. Use GlobalKey to change the page or jump to a specific page or date. See, Use of GlobalKey for more info.

More on the calendar view

Optional configurations/parameters in Calendar view

For month view

MonthView(
    controller: EventController(),
    // to provide custom UI for month cells.
    cellBuilder: (date, events, isToday, isInMonth) {
        // Return your widget to display as month cell.
        return Container();
    },
    minMonth: DateTime(1990),
    maxMonth: DateTime(2050),
    initialMonth: DateTime(2021),
    cellAspectRatio: 1,
    onPageChange: (date, pageIndex) => print("$date, $pageIndex"),
    onCellTap: (events, date) {
        // Implement callback when user taps on a cell.
        print(events);
    }
    // This callback will only work if cellBuilder is null.
    onEventTap: (event, date) => print(event);
);

For day view

DayView(
    controller: EventController(),
    eventTileBuilder: (date, events, boundry, start, end) {
        // Return your widget to display as event tile.
        return Container();
    },
    showVerticalLine: true, // To display live time line in day view.
    showLiveTimeLineInAllDays: true, // To display live time line in all pages in day view.
    minMonth: DateTime(1990),
    maxMonth: DateTime(2050),
    initialMonth: DateTime(2021),
    heightPerMinute: 1, // height occupied by 1 minute time span.
    eventArranger: SideEventArranger(), // To define how simultaneous events will be arranged.
    onEventTap: (events, date) => print(events),
);

For week view

WeekView(
    controller: EventController(),
    eventTileBuilder: (date, events, boundry, start, end) {
        // Return your widget to display as event tile.
        return Container();
    },
    showLiveTimeLineInAllDays: true, // To display live time line in all pages in week view.
    width: 400, // width of week view.
    minMonth: DateTime(1990),
    maxMonth: DateTime(2050),
    initialMonth: DateTime(2021),
    heightPerMinute: 1, // height occupied by 1 minute time span.
    eventArranger: SideEventArranger(), // To define how simultaneous events will be arranged.
    onEventTap: (events, date) => print(events),
);

To see the list of all parameters and detailed description of parameters visit documentation.

Use of EventController

EventController is used to add or remove events from the calendar view. When we add or remove events from the controller, it will automatically update all the views to which this controller is assigned.

Methods provided by EventController

Name Parameters Description
add CalendarEventData<T> event Adds one event in controller and rebuilds view.
addAll List<CalendarEventData<T>> events Adds list of events in controller and rebuilds view.
remove CalendarEventData<T> event Removes an event from controller and rebuilds view.
getEventsOnDay DateTime date Returns list of events on date

Use of GlobalKey

User needs to define global keys to access functionalities like changing a page or jump to a specific page or date. Users can also access the controller assigned to respected view using the global key.

By assigning global keys to calendar views you can access methods and fields defined by state class of respected views.

Methods defined by MonthViewState class:

Name Parameters Description
nextPage none Jumps to next page.
previousPage none Jumps to the previous page.
jumpToPage int page Jumps to page index defined by page.
animateToPage int page Animate to page index defined by page.
jumpToMonth DateTime month Jumps to the page that has a calendar for month defined by month
animateToMonth DateTime month Animate to the page that has a calendar for month defined by month

Methods defined by DayViewState class.

Name Parameters Description
nextPage none Jumps to next page.
previousPage none Jumps to the previous page.
jumpToPage int page Jumps to page index defined by page.
animateToPage int page Animate to page index defined by page.
jumpToDate DateTime date Jumps to the page that has a calendar for month defined by date
animateToDate DateTime date Animate to the page that has a calendar for month defined by date

Methods defined by WeekViewState class.

Name Parameters Description
nextPage none Jumps to next page.
previousPage none Jumps to the previous page.
jumpToPage int page Jumps to page index defined by page.
animateToPage int page Animate to page index defined by page.
jumpToWeek DateTime week Jumps to the page that has a calendar for month defined by week
animateToWeek DateTime week Animate to the page that has a calendar for month defined by week

Synchronize events between calendar views

There are two ways to synchronize events between calendar views.

  1. Provide the same controller object to all calendar views used in the project.
  2. Wrap MaterialApp with CalendarControllerProvider and provide controller as argument as defined in Implementation.

License

MIT License

Copyright (c) 2021 Simform Solutions

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

GitHub

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