finding out days remain from array of dates

Question

i have one array something like below

_combinedBirthdates(
"03/12/2013",
"03/12/2013",
"08/13/1990",
"12/09/1989",
"02/06",
"09/08",
"03/02/1990",
"08/22/1989",
"03/02",
"05/13",
"10/16",
"07/08",
"08/31/1990",
"04/14/1992",
"12/15/1905",
"08/14/1989",
"10/07/1987",
"07/25",
"07/17/1989",
"03/24/1987",
"07/28/1988",
"01/21/1990",
"10/13"

)

this all are NSString

i am trying to make new array from this which contains days remaining something like below

(days remaining for particular birthdate) (we will compair current date with above date array and we will find out remaining days) _newarray( "125", "100", "65", and till end like this.. )

i am using below code for this

unsigned int unitFlags =  NSDayCalendarUnit;
NSCalendar *currCalendar = [[NSCalendar alloc]
                            initWithCalendarIdentifier:NSGregorianCalendar];


NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];

[dateFormatter setDateStyle:NSDateFormatterShortStyle];
NSLog(@" currCalendar%@",currCalendar);

NSMutableArray * _newarray = [[NSMutableArray alloc] init];
for (NSString * str in _combinedBirthdates){

    NSDate * toDate = [dateFormatter dateFromString:str];
    NSDateComponents *daysInfo = [currCalendar components:unitFlags fromDate:[NSDate date]  toDate:toDate  options:0];
    int days = [daysInfo day];
    [_newarray addObject:[NSString stringWithFormat:@"%d",days]];
}
NSLog(@" _newarray%@",_newarray);

and this is what i am getting as output when i print _newarray plz help me thank you

_newlymadeArray(
"-1",
"-1",
"-8248",
"-8495",
"-4454",
"-4454",
"-8412",
"-8604",
"-4454",
"-4454",
"-4454",
"-4454",
"-8230",
"-7638",
"-39170",
"-8612",
"-9289",
"-4454",
"-8640",
"-9486",
"-8994",
"-8452",
"-4454",
"-2072",
"-888",
"-8315"
)

i think this is solved in this question `http://stackoverflow.com/questions/15358210/how-to-make-another-array-containing-number-of-days-remain` — Shah Paneri, Mar 13 '13 at 05:11
Clarification needed on the requirement, i.e., you have given some dates, but with which date these dates needs to compare? — Bhanu Prakash, Mar 13 '13 at 05:13
Also the question and the code is entirely different. You need the number of days remaining for the birthday. But your code calculates the number of days passed from the actual birthdate. (means 13/02/2013-20/08/1990 ) — Midhun MP, Mar 13 '13 at 05:22
so suggest something Midhun MP as you know whats wrong im doing how to find just remaining days ? — Prakash Desai, Mar 13 '13 at 05:38

score 0 · Accepted Answer · answered Mar 13 '13 at 05:45

0

Please try to use this.I think this one may help you.

NSDateFormatter *tempFormatter = [[NSDateFormatter alloc]init];
    [tempFormatter setDateFormat:@"dd/MM/yyyy"];

    NSString *str = [tempFormatter stringFromDate:@"yourStartDate"];
    NSDate *startdate = [tempFormatter dateFromString:str];

    str = [tempFormatter stringFromDate:@"yourEndDate"];
    NSDate *endDate = [tempFormatter dateFromString:str];

    int i = [startdate timeIntervalSince1970];
    int j = [toDate timeIntervalSince1970];

    double X = j-i;

    int days=(int)((double)X/(3600.0*24.00));

answered Mar 13 '13 at 05:45

Dharmbir Singh

17,485
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when i try to print int days then this is what i get Single stepping until exit from function objc_msgSend, which has no line number information. – Prakash Desai Mar 13 '13 at 06:10
thank you very much i got answer from ur style – Prakash Desai Mar 13 '13 at 06:18
Your most welcome dear... – Dharmbir Singh Mar 13 '13 at 07:40

score 0 · Answer 2 · answered Mar 13 '13 at 05:47

use below code to compare two dates pass both date in same format

NSDateFormatter *dateformat = [[NSDateFormatter alloc]init];
[dateformat setDateFormat:@"dd/MM/yyyy"];
NSString *StrDate1 = [dateformat stringFromDate:[NSDate date]];
NSString *StrDate2 = [dateformat stringFromDate:date2];
NSDate *firstDate = [dateformat dateFromString:StrDate1];
NSDate *secondDate = [dateformat dateFromString:StrDate2];
NSTimeInterval lastDiff = [firstDate timeIntervalSinceNow];
NSTimeInterval todaysDiff = [secondDate timeIntervalSinceNow];
NSTimeInterval dateDiff = todaysDiff - lastDiff;
int day = dateDiff/(3600*24);

 // days are remaining

use this in for loop you will gate remaining days

when i try to prinkt int day then this is what i get Single stepping until exit from function objc_msgSend, which has no line number information. — Prakash Desai, Mar 13 '13 at 06:14

finding out days remain from array of dates

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