if you have any issue or any suggestion you could contact a Calendar , DatePicker and Date Converter For Persian Date(Jalali/Shamsi date) with holidays

Modified and Completed Version of jalali_calendar package

Usage

Import this line in Flutter pubspec.yaml

jalali_table_calendar: ^1.0.2

To Use Calendar Or DatePicker , Import this line to your dart file

import 'package:jalali_table_calendar/jalali_table_calendar.dart';

To Use date Converter , Import this line to your dart file

import 'package:persian_date/persian_date.dart';

After import library, to show the calendar you can use jalaliCalendar or jalaliCalendarPicker() method , on the constructor context is important

This sample make a Calendar Widget

jalaliCalendar(
    context: context,
    // add the events for each day
    events: {
        DateTime(2021,4,15):['sample event',66546],
        DateTime(2021,4,14):[6,5,465,1,66546],
        DateTime(2021,4,18):[6,5,465,1,66546],
        DateTime(2021,4,19):[6,5,465,1,66546],
         },
    //make marker for every day that have some events
    marker: (date,events){
        return Positioned(
            top: -4,
            left: 0,
            child: Container(
            decoration: BoxDecoration(
            color: Theme.of(context).textSelectionColor,
            shape: BoxShape.circle),
            padding: const EdgeInsets.all(6.0),
              child: Text(events.length.toString()),
                ),
             );
            },
    onDaySelected: (date) {
        print(date);
         }),

This sample return the selected date as Jalali(شمسی)

if you want to return the selected date to Gregorian, on the constructor set the convertToGregorian to true

Future _selectDate() async {
    String picked = await jalaliCalendarPicker(context: context); // نمایش خروجی به صورت شمسی
   //  await jalaliCalendarPicker(context: context,convertToGregorian: true); // نمایش خروجی به صورت میلادی
    if (picked != null) setState(() => _value =picked.toString());
    print(_value);
  }

This sample return the selected date as Gregorian(میلادی)

Future _selectDate() async {
    String picked = await jalaliCalendarPicker(context: context,convertToGregorian: true); // نمایش خروجی به صورت میلادی
    if (picked != null) setState(() => _value =picked.toString());
    print(_value);
  }

Those parameters using To Show the TimePicker

To use datePicker you can follow this sample

To show DatePicker those parameters is required

minYear // min date this required  for the start year in Jalali
maxYear // max  date this required  for the last year in jalali
confirm and cancel // widget for show text
_format // for returning date like String _format = 'yyyy-mm-dd';
onChanged // return date when the user changes the date
onConfirm //  return date when the user click confirm

For set, default date use those parameters

initialYear => for year
initialMonth => for month
initialDay => for day

Full datePicker Sample

    DatePicker.showDatePicker(
      context,
      minYear: 1300,
      maxYear: 1450,
      confirm: Text(
        'Confirm',
        style: TextStyle(color: Colors.red),
      ),
      cancel: Text(
        'Cancel',
        style: TextStyle(color: Colors.cyan),
      ),
      dateFormat: _format,
      onChanged: (year, month, day) {
        if (!showTitleActions) {
          _changeDatetime(year, month, day);
        }
      },
      onConfirm: (year, month, day) {
        _changeDatetime(year, month, day);
        _valuePiker = " Full date : $_datetime  \n year : $year \n  Month  :   $month \n  day :  $day";
      }
    )

 void _changeDatetime(int year, int month, int day) {
    setState(() {
      _datetime = '$year-$month-$day';
    });
  }

To use date Converter you can follow this sample

first import this library to your code

import 'package:persian_date/persian_date.dart';

Full Date Converter Sample

PersianDate pDate = PersianDate(gregorian: "1989-01-29");
    print("Now ${pDate.getDate}");

    PersianDate persianDate = PersianDate();
    print("Now ${persianDate.now}");
    print(persianDate.hour);
    print("year ${persianDate.year}");
    print("isHoliday ${persianDate.isHoliday}");
    print("isHoliday ${persianDate.weekdayname}");
    print(persianDate.monthname); // نام ماه
      print(persianDate.month); // ماه
      print(persianDate.day); // روز
      print(persianDate.hour);// ساعت
      print(persianDate.minute);// دقیقه
      print(persianDate.second);// ثانیه
      print(persianDate.millisecond); // میلی ثانیه
      print(persianDate.microsecond);//


print("Parse Gregorian To Jalali ${persianDate.gregorianToJalali("2019-02-20T00:19:54.000Z","yyyy-m-d hh:nn")}");
print("Parse Jalali To Gregorian ${persianDate.jalaliToGregorian("1368-05-30 19:54", "yyyy-m-d hh:nn")}");

those formats are supported in date converter

   `"2012-02-27 13:27:00"`
    `"2012-02-27 13:27:00.123456z"`
    `"2012-02-27 13:27:00,123456z"`
    `"20120227 13:27:00"`
    `"20120227T132700"`
    `"20120227"`
    `"+20120227"`
    `"2012-02-27T14Z"`
    `"2012-02-27T14+00:00"`
    `"-123450101 00:00:00 Z"`: in the year -12345.
    `"2002-02-27T14:00:00-0500"`: Same as `"2002-02-27T19:00:00Z"`

Download jalali Table Calendar package source code on GitHub

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