CalendarDatePicker2

A lightweight and customizable calendar picker based on Flutter CalendarDatePicker, with support for single date picker, range picker and multi picker.

single mode	multi mode	range mode	dialog function

single scroll	multi scroll	range scroll	dialog scroll

Intro

CalendarDatePicker2 consists of two main widgets:

• CalendarDatePicker2, this widget only includes the calendar UI and will emit event whenever user taps a different date.
• CalendarDatePicker2WithActionButtons, this widget includes calendar UI and the action buttons (CANCEL & OK). This widget will only emit the updated value when user taps 'OK' button.

Features

• Extended CalendarDatePicker allows null initialDate
• Highly Customizable UI
• Supports three modes: single, multi and range
• Supports four views: day, month, year and scroll
• Built-in showCalendarDatePicker2Dialog
• Multi-language supports
• Support of Material 3

Migrate from 0.x.x

Version 1.x.x will by default enable month picker. If you want to migrate to v1.x.x from v0.x.x and would like to keep the old behavior, you will need to set disableMonthPicker to true.

How to use

Make sure to check out examples for more details.

Installation

Add the following line to pubspec.yaml:

dependencies:
calendar_date_picker2: ^1.1.7

Basic setup

The complete example is available here.

CalendarDatePicker2 requires you to provide config and value:

• config contains the configurations for your calendar setup and UI.
• value is initial values passed into your calendar picker, value must be a List.

The minimum working sample

CalendarDatePicker2(
  config: CalendarDatePicker2Config(),
  value: _dates,
  onValueChanged: (dates) => _dates = dates,
);

Single Date Picker Configuration

During the initialization of CalendarDatePicker2Config the calendarType of the config instance will by default set to CalendarDatePicker2Type.single, so you don't have to set the calendar type specifically.

Multi Date Picker Configuration

In order to use multi mode date picker, you will need to set the calendarType of config to CalendarDatePicker2Type.multi:

CalendarDatePicker2(
  config: CalendarDatePicker2Config(
      calendarType: CalendarDatePicker2Type.multi,
  ),
  value: _dates,
  onValueChanged: (dates) => _dates = dates,
);

Range Date Picker Configuration

In order to use range mode date picker, you will need to set the calendarType of config to CalendarDatePicker2Type.range:

CalendarDatePicker2(
  config: CalendarDatePicker2Config(
      calendarType: CalendarDatePicker2Type.range,
  ),
  value: _dates,
  onValueChanged: (dates) => _dates = dates,
);

Use built-in dialog display method

This package includes built-in support to display calendar as a dialog. To use it, you will need to call showCalendarDatePicker2Dialog, which takes three required arguments: context, config, dialogSize:

...
var results = await showCalendarDatePicker2Dialog(
  context: context,
  config: CalendarDatePicker2WithActionButtonsConfig(),
  dialogSize: const Size(325, 400),
  value: _dates,
  borderRadius: BorderRadius.circular(15),
);
...

Config options

For CalendarDatePicker2 widget

Argument	Type	Description
config	CalendarDatePicker2Config	Calendar UI related configurations
value	List<DateTime?>	The selected [DateTime]s that the picker should display.
onValueChanged	ValueChanged<List<DateTime>>?	Called when the selected dates changed
displayedMonthDate	DateTime?	Date to control calendar displayed month
onDisplayedMonthChanged	ValueChanged<DateTime>?	Called when the user navigates to a new month/year in the picker under non-scroll mode

For CalendarDatePicker2Config:

Option	Type	Description
calendarType	CalendarDatePicker2Type?	Calendar picker type, has 3 values: single, multi, range
rangeBidirectional	bool?	Flag to enable selecting dates range also in reverse-chronological order
firstDate	DateTime?	The earliest allowable DateTime user can select
lastDate	DateTime?	The latest allowable DateTime user can select
currentDate	DateTime?	The DateTime representing today which will be outlined in calendar
calendarViewMode	CalendarDatePicker2Mode?	The initially displayed view of the calendar picker, with four options available: day, month, year and scroll
calendarViewScrollPhysics	ScrollPhysics?	The scroll physics for the calendar month view
dynamicCalendarRows	bool?	Flag to enable dynamic calendar rows based on specific month
allowSameValueSelection	bool?	Flag to control [onValueChanged] behavior
animateToDisplayedMonthDate	bool?	Flag to always animate to the displayedMonthDate
weekdayLabels	List<String>?	Custom weekday labels, should starts with Sunday
weekdayLabelTextStyle	TextStyle?	Custom text style for weekday labels
weekdayLabelBuilder	WeekdayLabelBuilder?	Function to provide full control over weekday label widget
firstDayOfWeek	int?	Index of the first day of week, where 0 points to Sunday, and 6 points to Saturday.
lastMonthIcon	Widget?	Custom icon for last month button control
nextMonthIcon	Widget?	Custom icon for next month button control
controlsHeight	double?	Custom height for calendar control toggle's height
controlsTextStyle	TextStyle?	Custom text style for calendar mode toggle control
centerAlignModePicker	bool?	Flag to centralize year and month text label in controls
modePickersGap	double?	Custom gap distance between month and year mode pickers
disableModePicker	bool?	Flag to disable mode picker and hide the toggle icon
modePickerTextHandler	ModePickerTextHandler?	Function to control mode picker displayed text
modePickerBuilder	ModePickerBuilder?	Function to provide full control over mode picker UI
customModePickerIcon	Widget?	Custom icon for the mode picker button icon
useAbbrLabelForMonthModePicker	bool?	Use Abbreviation label for month mode picker, only works when month picker is enabled
dayViewController	PageController?	Custom page controller for the calendar day view
dayMaxWidth	double?	Max width of day widget. When [dayMaxWidth] is not null, it will override default size settings
dayBorderRadius	BorderRadius?	Custom border radius for day indicator
dayTextStyle	TextStyle?	Custom text style for calendar day(s)
todayTextStyle	TextStyle?	Custom text style for current calendar day(s)
disabledDayTextStyle	TextStyle?	Custom text style for disabled calendar day(s)
dayTextStylePredicate	DayTextStylePredicate?	Function to provide full control over calendar day(s) text style
selectedDayHighlightColor	Color?	The highlight color selected day
selectedDayTextStyle	TextStyle?	Custom text style for selected calendar day(s)
selectableDayPredicate	SelectableDayPredicate?	Function to provide full control over which dates in the calendar can be selected
selectedRangeDayTextStyle	TextStyle?	Custom text style for selected range calendar day(s)
selectedRangeHighlightColor	Color?	The highlight color for day(s) included in the selected range
selectedRangeDecorationPredicate	SelectedRangeDecorationPredicate?	Predicate to determine the day widget box decoration for a day in selected range
selectedRangeHighlightBuilder	SelectedRangeHighlightBuilder?	Function to provide full control over range picker highlight
daySplashColor	Color?	The splash color of the day widget
dayBuilder	DayBuilder?	Function to provide full control over day widget UI
dayModeScrollDirection	Axis?	Axis scroll direction for [CalendarDatePicker2Mode.day] mode
monthViewController	ScrollController?	Custom scroll controller for the calendar month view
monthBuilder	MonthBuilder?	Function to provide full control over month widget UI
hideMonthPickerDividers	bool?	Flag to hide dividers on month picker
selectableMonthPredicate	SelectableMonthPredicate?	Function to provide full control over which month in the month list can be selected.
disableMonthPicker	bool?	Flag to disable month picker
monthTextStyle	TextStyle?	Custom text style for month(s)
selectedMonthTextStyle	TextStyle?	Custom text style for selected month(s)
disabledMonthTextStyle	TextStyle?	Custom text style for disabled month(s)
yearViewController	ScrollController?	Custom scroll controller for the calendar year view
yearBorderRadius	BorderRadius?	Custom border radius for year indicator
yearTextStyle	TextStyle?	Custom text style for year(s)
selectedYearTextStyle	TextStyle?	Custom text style for selected year(s)
disabledYearTextStyle	TextStyle?	Custom text style for disabled year(s)
selectableYearPredicate	SelectableYearPredicate?	Function to provide full control over which year in the year list be selected.
yearBuilder	YearBuilder?	Function to provide full control over year widget UI
hideYearPickerDividers	bool?	Flag to hide dividers on year picker
scrollViewTopHeaderTextStyle	TextStyle?	Custom text style for scroll view top week labels header
hideScrollViewTopHeader	bool?	Flag to hide top week labels header on scroll view picker
hideScrollViewTopHeaderDivider	bool?	Flag to hide top week labels header divider on scroll view
hideScrollViewMonthWeekHeader	bool?	Flag to hide month calendar week labels header on scroll view
scrollViewConstraints	BoxConstraints?	BoxConstraints for the scroll calendar view, only work for scroll mode
scrollViewMonthYearBuilder	ScrollViewMonthYearBuilder?	Function to provide full control over scroll calendar month year UI
scrollViewOnScrolling	ScrollViewOnScrolling?	Function to callback over scrolling on scroll view
scrollViewController	ScrollController?	Custom scroll controller to the scroll calendar view

In addition to the configurations above, CalendarDatePicker2WithActionButtonsConfig has 9 extra options

Option	Type	Description
gapBetweenCalendarAndButtons	double?	The gap between calendar and action buttons
cancelButtonTextStyle	TextStyle?	Text style for cancel button
cancelButton	Widget?	Custom cancel button
okButtonTextStyle	TextStyle?	Text style for ok button
okButton	Widget?	Custom ok button
openedFromDialog	bool?	Is the calendar opened from dialog
closeDialogOnCancelTapped	bool?	Close dialog after user taps the CANCEL button
closeDialogOnOkTapped	bool?	Close dialog after user taps the OK button
buttonPadding	EdgeInsets?	Custom wrapping padding for Ok & Cancel buttons

Custom UI

By using the configs above, you could make your own custom calendar picker as your need.

CalendarDatePicker2WithActionButtons(
  config: CalendarDatePicker2WithActionButtonsConfig(
    firstDayOfWeek: 1,
    calendarType: CalendarDatePicker2Type.range,
    selectedDayTextStyle: TextStyle(color: Colors.white, fontWeight: FontWeight.w700),
    selectedDayHighlightColor: Colors.purple[800],
    centerAlignModePicker: true,
    customModePickerIcon: SizedBox(),
    dayBuilder: _yourDayBuilder,
    yearBuilder: _yourYearBuilder,
  ),
  value: _dates,
  onValueChanged: (dates) => _dates = dates,
);

Multi-language support

This package has multi-language supports. To enable it, add your Locale into the wrapping MaterialApp:

MaterialApp(
  localizationsDelegates: GlobalMaterialLocalizations.delegates,
  supportedLocales: const [
    Locale('en', ''),
    Locale('zh', ''),
    Locale('ru', ''),
    Locale('es', ''),
    Locale('hi', ''),
  ],
  ...
);

中文	русский	español	हिंदी

Contributions

Feel free to contribute to this project. 🍺 Pull requests are welcome!

There are some tips before creating a PR:

• Please always create an issue/feature before raising a PR
• Please always create a minimum reproducible example for an issue
• Please use the official Dart Extension as your formatter or use dart format . -l 80 if you are not using VS Code
• Please keep your changes to its minimum needed scope (avoid introducing unrelated changes)
• Please follow this git commit convention by adding feat: or fix: to your PR commit