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iosobjective-cnsdatensdateformatter

NSDateFormatter bug?

date = 2016-12-25 21:00:00 +0000

NSDateFormatter *dateformat = [[NSDateFormatter alloc] init];
dateformat.calendar = [NSCalendar currentCalendar];
[dateformat setDateFormat:@"YYYY-MM-dd"];
NSString *dateString = [dateformat stringFromDate:date];
NSLog(@"dateStr:%@",dateString);

Log:

dateStr:2017-12-26

My locale +3 hours

Is it a bug? Or a feature?

Solution

  • Developer bug.

    [dateformat setDateFormat:@"yyyy-MM-dd"];

    YYYY is year in a week based calendar.