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

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);
    },
    startDay: WeekDays.sunday, // To change the first day of the week.
    // This callback will only work if cellBuilder is null.
    onEventTap: (event, date) => print(event),
    onDateLongPress: (date) => print(date),
);

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.
    minDay: DateTime(1990),
    maxDay: DateTime(2050),
    initialDay: 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),
    onDateLongPress: (date) => print(date),
);

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.
    minDay: DateTime(1990),
    maxDay: DateTime(2050),
    initialDay: 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),
    onDateLongPress: (date) => print(date),
    startDay: WeekDays.sunday, // To change the first day of the week.
);

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
animateToEvent	CalendarEventData event	Animates to the page where a given event is and then scrolls to make that event visible on the screen.
jumpToEvent	CalendarEventData event	Jumps to the page where a given event is and then scrolls to make that event visible on the screen.

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
animateToEvent	CalendarEventData event	Animates to the page where a given event is and then scrolls to make that event visible on the screen.
jumpToEvent	CalendarEventData event	Jumps to the page where a given event is and then scrolls to make that event visible on the screen.

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.

Show only working days in WeekView.

You can configure week view such that it displays only specific days. ex,

WeekView(
  weekDays: [
    WeekDays.monday,
    WeekDays.tuesday,
    WeekDays.wednesday,
    WeekDays.thursday,
    WeekDays.friday,
  ],
);

Above code will create WeekView with only five days, from monday to friday.

Main Contributors

Vatsal Tanna

Sanket Kachhela

Parth Baraiya

Ujas Majithiya

Ankit Panchal

License

MIT License

Copyright (c) 2021 Simform Solutions

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