Question

Is there any formula to direct finding D.O.B from put Year,month and day’s in TextField ??
InShort put 21 year 6 month 16 day in text filed that return the calculating D.O.B ?

Answer 1

In iphone you do not have direct method how ever you can write on your own.

step 1: Make a NSDate object from year,month,day.

NSDateComponents *comp = [[NSDateComponents alloc] init];
[comp setYear:year];
[comp setMonth:month];
[comp setDay:day];
 NSDate *birthdate = [[NSCalendar currentCalendar] dateFromComponents:comp];
[comp release];

step 2: Find the interval from from today.

NSTimeInterval dateDiff = [birthDate timeIntervalSinceNow];
int age=trunc(dateDiff/(60*60*24))/365;

EDIT …

    NSDateComponents *comp = [[NSDateComponents alloc] init];
    [comp setYear:-year];
    [comp setMonth:-month];
    [comp setDay:-day];
     NSDate *birthdate = [[NSCalendar currentCalendar]dateByAddingComponents:comp toDate:[NSDate date] options:0];;
    [comp release];