Calculate age from BirthDate

Question

I have DatePicker Dialog, When I select date at that time I want to calculate age it\'s working but when I select date of current year at that time it showing the -1 age instead

Answer 1

New Language Dart using DateTime

static int getPerfectAgeInYears(DateTime dob,DateTime today) {

dob = DateTime(dob.year,dob.month,dob.day);

int ageInteger = 0;

today = DateTime(today.year,today.month,today.day);

ageInteger = today.year-dob.year;

if (today.month == dob.month) {

  if (today.day < dob.day) {

    ageInteger = ageInteger - 1;
  }

} else if (today.month < dob.month) {

  ageInteger = ageInteger - 1;

}

return ageInteger;}

Call as print(getPerfectAgeInYears(DateTime(2000,6,4),DateTime.now())); Consider Today's Date - 30th August 2020

If Birthdate - 29th July 1993, the output - 27

If Birthdate - 29th August 1993, the output - 27

If Birthdate - 30th August 1993, the output - 27

If Birthdate - 31st August 1993, the output - 26

If Birthdate - 31st September 1993, the output - 26