NSDateFormatter with 24 hour times

user_258742 0
Viewed 34998

I have a countdown timer which countsdown from the current date/time to a specific future date/time. It is working great except for one problem. I input the future date using NSDateFormatter and dateFromString. It doesn't seem to be able to accept any time (hour) over 12 though indicating it is not support 24 hour clock. Is there a way to enable 24 hour clock support or a workaround? Here is some of my code:

NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"yyyy-MM-dd hh:mm:ss"];
NSDate *myDate = [df dateFromString:@"2010-03-14 15:00:00"];
nsdateformatter objective-c iphone
6 Answers

NSDateFormatter follows the Unicode standard for date and time patterns. Use 'H' for the hour on a 24-hour clock:

NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate *myDate = [df dateFromString:@"2010-03-14 15:00:00"];
Lars_O_234240

Objective C version of getting NSDate from 24-hour string when user has set 12 hour format on their iPhone without changing locale and setting timezone:

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSString *localeId = dateFormatter.locale.localeIdentifier;
if (! [localeId hasSuffix:@"_POSIX"]) {
    localeId = [localeId stringByAppendingString:@"_POSIX"];
    dateFormatter.locale = [NSLocale localeWithLocaleIdentifier:localeId];
}
dateFormatter.dateFormat = @"yyyy-MM-dd'T'HH.mm.ss";

NSDate *date  = [dateFormatter dateFromString:dateText];
user_7516410
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