Get current Week of the Month as a Number - flutter

Question

How do I get the current week of the month as a number in Dart? I need to create some sort of calender with a week view where it says something like "2. Week of January"

Answer 1

You can use DateTime().now() to get the current time and date of the system or today's date also. Here is the code snippet below:
// Current date and time of system
String date = DateTime.now().toString();
// This will generate the time and date for first day of month
String firstDay = date.substring(0, 8) + '01' + date.substring(10);
// week day for the first day of the month
int weekDay = DateTime.parse(firstDay).weekday;
DateTime testDate = DateTime.now();
int weekOfMonth;
// If your calender starts from Monday
weekDay--;
weekOfMonth = ((testDate.day + weekDay) / 7).ceil();
print('Week of the month: $weekOfMonth');
weekDay++;
// If your calender starts from sunday
if (weekDay == 7) {
weekDay = 0;
}
weekOfMonth = ((testDate.day + weekDay) / 7).ceil();
print('Week of the month: $weekOfMonth');
Alternatively, if are looking for a complete implementation of the calender month UI then click here

Answer 2

My Answer is impaired from #dblank answer
extension DateTimeExtension on DateTime {
int get weekOfMonth {
var date = this;
final firstDayOfTheMonth = DateTime(date.year, date.month, 1);
int sum = firstDayOfTheMonth.weekday - 1 + date.day;
if (sum % 7 == 0) {
return sum ~/ 7;
} else {
return sum ~/ 7 + 1;
}
}
}
Then use it like this:
var wom = DateTime.now().weekOfMonth;

Answer 3

extension DateTimeExtension on DateTime {
int get weekOfMonth {
var wom = 0;
var date = this;
while (date.month == month) {
wom++;
date = date.subtract(const Duration(days: 7));
}
return wom;
}
}
Then use it like this:
var wom = DateTime.now().weekOfMonth;