Flutter: showDatePicker firstdate and lastdate from same week - flutter

Question

I am trying to give user an option to select date between 7 days.
Like today is 2nd March then user can select any date before 10th March.
My current code is showing first date as 01/01/03 i am not sure why it is giving me this date.
Here is the code.
_pickedDate() async {
rescheduleddate = await showDatePicker(
context: context,
firstDate: DateTime(DateTime.now().day + 1),
lastDate: DateTime(DateTime.now().day + 7),
initialDate: DateTime(DateTime.now().day + 1),
);
if (rescheduleddate != null) {
setState(() {
pickeddate = rescheduleddate;
});
}
}
I am not sure what am i doing wrong because if i add year instead of day then it is working fine.

Answer 1

I managed to solve this one.
_pickedDate() async {
rescheduleddate = await showDatePicker(
context: context,
firstDate: DateTime.now().add(new Duration(days: 1)),
lastDate: DateTime.now().add(new Duration(days: 7)),
initialDate: DateTime.now().add(new Duration(days: 1)),
);
if (rescheduleddate != null) {
setState(() {
pickeddate = rescheduleddate;
});
}
}

Answer 2

I think the issue might be that you aren't properly adding a duration to the current DateTime object. By calling .day you are just getting the number of the day as an integer, which you're then trying to plug back into a new DatePicker as an argument. For example, if today is March 2nd, DateTime.now().day would return 2, so your firstDate value is currently trying to evaluate what DateTime(3) is (if you inspect the DateTime function, the first argument is the year as an integer, so it's setting the date to 01/01/03). Try doing this:
rescheduleddate = await showDatePicker(
context: context,
firstDate: DateTime.now().add(Duration(days: 1)),
lastDate: DateTime.now().add(Duration(days: 7)),
initialDate: DateTime.now().add(Duration(days: 1)),
);