Awesome

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),
    onEventDoubleTap: (events, date) => print(events),
    onEventLongTap: (event, date) => print(event),
    onDateLongPress: (date) => print(date),
    headerBuilder: MonthHeader.hidden, // To hide month header
    showWeekTileBorder: false, // To show or hide header border
    hideDaysNotInMonth: true, // To hide days or cell that are not in current month
    showWeekends: false, // To hide weekends default value is true
);

For day view

DayView(
    controller: EventController(),
    eventTileBuilder: (date, events, boundry, start, end) {
        // Return your widget to display as event tile.
        return Container();
    },
    fullDayEventBuilder: (events, date) {
        // Return your widget to display full day event view.
        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),
    onEventDoubleTap: (events, date) => print(events),
    onEventLongTap: (events, date) => print(events),
    onDateLongPress: (date) => print(date),
    startHour: 5 // To set the first hour displayed (ex: 05:00)
    endHour:20, // To set the end hour displayed
    hourLinePainter: (lineColor, lineHeight, offset, minuteHeight, showVerticalLine, verticalLineOffset) {
        return //Your custom painter.
    },
    dayTitleBuilder: DayHeader.hidden, // To Hide day header
    keepScrollOffset: true, // To maintain scroll offset when the page changes
);

For week view

WeekView(
    controller: EventController(),
    eventTileBuilder: (date, events, boundry, start, end) {
      // Return your widget to display as event tile.
      return Container();
    },
    fullDayEventBuilder: (events, date) {
      // Return your widget to display full day event view.
      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),
    onEventDoubleTap: (events, date) => print(events),
    onDateLongPress: (date) => print(date),
    startDay: WeekDays.sunday, // To change the first day of the week.
    startHour: 5, // To set the first hour displayed (ex: 05:00)
    endHour:20, // To set the end hour displayed
    showVerticalLines: false, // Show the vertical line between days.
    hourLinePainter: (lineColor, lineHeight, offset, minuteHeight, showVerticalLine, verticalLineOffset) {
        return //Your custom painter.
    },
    weekPageHeaderBuilder: WeekHeader.hidden, // To hide week header
    fullDayHeaderTitle: 'All day', // To set full day events header title
    fullDayHeaderTextConfig: FullDayHeaderTextConfig(
      textAlign: TextAlign.center,
      textOverflow: TextOverflow.ellipsis,
      maxLines: 2,
    ), // To set full day events header text config
    keepScrollOffset: true, // To maintain scroll offset when the page changes
);

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

Check documentation for more info.

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:

Check documentation for more info.

Methods defined by DayViewState class.

Check documentation for more info.

Methods defined by WeekViewState class.

Check documentation for more info.

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.

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License

MIT License

Copyright (c) 2021 Simform Solutions

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