iOS time processing

Time remaining processing
Current Time 2014-08-27 09:06
NSDate *now = [NSDate Date];
Expiry date 2014-08-28 00:00
NSDateFormatter *fmt = [[NSDateFormatter alloc] init];
Fmt.dateformat = @ "YYYY-MM-DD";
NSDate *deadtime = [FMT dateFromString:self.deal.purchase_deadline] datebyaddingtimeinterval:24 * 3600];
Compare 2 time gaps
Nscalendar *calendar = [Nscalendar Currentcalendar];
Nscalendarunit unit = Nscalendarunitday | Nscalendarunithour | Nscalendarunitminute;
nsdatecomponents *cmps = [Calendar components:unit fromdate:now todate:deadtime options:0];
if (Cmps.day > 365) {
Self.leftTimeButton.title = @ "does not expire within one year";
} else {
Self.leftTimeButton.title = [NSString stringwithformat:@%d days%d hours%d minutes, cmps.day, Cmps.hour, Cmps.minute];
}

iOS time processing