Calling getWeek method throws data type exception

[MzeeAlii]

Calling dateUtil.getWeek() throws an error with a message "type 'double' is not a subtype of type 'int'".

A portion of code that raises the exception is as follows:

DateTime today = DateTime.now();
var todayWeek = dateUtil.getWeek(today.month, today.day, today.year);
print('todayWeek=' + todayWeek.toString());

[sandeepyohans]

Hi @ImAliSuleiman, even I am facing the same issue. Is there any workaround for this problem:
My code:

  DateTime now = new DateTime.now();
  DateUtil util = new DateUtil();
  var week =  util.getWeek(now.month, now.day, now.year) ;
  print(week);

My Console:

Unhandled exception:
type 'double' is not a subtype of type 'int'
#0      DateUtil.getWeek (package:date_util/src/dateUtil_base.dart:181:9)

[MzeeAlii]

I'm using a custom class that computes a week number since the start of a year from the date passed:

class DateTimeHelper {
  static int currentWeek() {
    return weekOfYear(DateTime.now());
  }

  static int weekOfYear(DateTime date) {
    DateTime monday = weekStart(date);
    DateTime first = weekYearStartDate(monday.year);

    int week = 1 + (monday.difference(first).inDays / 7).floor();

    if (week == 53 && DateTime(monday.year, 12, 31).weekday < 4) week = 1;

    return week;
  }

  static DateTime weekStart(DateTime date) {
    // This is ugly, but to avoid problems with daylight saving
    DateTime monday = DateTime.utc(date.year, date.month, date.day);
    monday = monday.subtract(Duration(days: monday.weekday - 1));

    return monday;
  }

  static DateTime weekEnd(DateTime date) {
    // This is ugly, but to avoid problems with daylight saving
    // Set the last microsecond to really be the end of the week
    DateTime sunday =
        DateTime.utc(date.year, date.month, date.day, 23, 59, 59, 999, 999999);
    sunday = sunday.add(Duration(days: 7 - sunday.weekday));

    return sunday;
  }

  static DateTime weekYearStartDate(int year) {
    final firstDayOfYear = DateTime.utc(year, 1, 1);
    final dayOfWeek = firstDayOfYear.weekday;

    return firstDayOfYear.add(
        Duration(days: (dayOfWeek <= DateTime.thursday ? 1 : 8) - dayOfWeek));
  }
}

You can download the class file below.
date_time_helper.dart.zip

Usage:

• To get a week number of the current year, just call currentWeek function and it does magic for you.

var todayWeek = DateTimeHelper.currentWeek();
print('todayWeek=' + todayWeek.toString());

• To get week number of any date (other than the current date), call weekOfYear function while passing date to get its week number.

var otherWeek = DateTimeHelper.(new DateTime(2000, 6, 5));   // for Jun 5, 2000
print('otherWeek =' + otherWeek.toString());

I hope that helps you @sandeepyohans. For anything - regarding code, of course - feel free to reach out.

[sandeepyohans]

Thanks for your reply @ImAliSuleiman This helps.