DART

flutter get number of days in month

DateTime now = new DateTime.now();
DateTime lastDayOfMonth = new DateTime(now.year, now.month + 1, 0);
print("${lastDayOfMonth.month}/${lastDayOfMonth.day}");

flutter day in month

int daysInMonth(DateTime date) =>  DateTimeRange(
  start:  DateTime(date.year, date.month,1),
  end: DateTime(date.year, date.month + 1))
  .duration
  .inDays;

print("Days in current month is ${daysInMonth(DateTime.now())}");