nsdate

I'm getting started developing for the iPhone and as such I am looking at different tutorials online as well as trying some different things out myself. Currently, I'm trying to create a countdown until midnight. To get the number of hour, minutes, and seconds, I do the following (which I found somewhere): NSDate* now = [NSDate date]; int hour = 23 - [[now dateWithCalendarFormat:nil timeZone:nil] hourOfDay]; int min = 59 - [[now dateWithCalendarFormat:nil timeZone:nil] minuteOfHour]; int sec = 59 - [[now dateWithCalendarFormat:nil timeZone:nil] secondOfMinute]; countdownLabel.text = [NSString

how to calculate the age based on the birth date in this format 6/24/1976 mon/date/year... cobbal Many of these answers don't properly account for leap years and such, best is to use Apple's methods instead of dividing by constants. Swift let birthday: NSDate = ... let now = Date() let ageComponents = calendar.dateComponents([.year], from: birthday, to: now) let age = ageComponents.year Objective-C NSDate* birthday = ...; NSDate* now = [NSDate date]; NSDateComponents* ageComponents = [[NSCalendar currentCalendar] components:NSCalendarUnitYear fromDate:birthday toDate:now options:0]; NSInteger

I'm using RestKit, and pulling in a RSS feed. I'm getting this error for each date related to RKValueTransformers saying (for example): "Failed transformation of value 'September 04, 2014 09:58:01 PDT' to NSDate: none of the 10 value transformers consulted were successful." It goes on to tell me: Failed transformation of value at keyPath 'pubDate.text' to representation of type 'NSDate' and: {NSLocalizedDescription=Input value is not a valid ISO 8601 string: 'September 01, 2014 14:53:30 PDT'} I believe that I'm pulling in the text correctly, but can't figure out if its that or if there's

Here is my code. NSDate *today = [NSDate date]; NSString *todayString = [[today description] substringToIndex:10]; NSLog(@"Today: %@", todayString); I am getting 2011-07-19 instead of 2011-07-18. Any ideas on what may be the problem? NSDate's description method returns times in UTC, which if you are in the US Eastern Time Zone during daylight savings time is 4 hours later than your wall clock time. In other words, at 10pm your time it is 2am the next day in UTC. The usual way to fix it is to use NSDateFormatter instead, and explicitly set the time zone if necessary. Ayush Goel NSDate *today =

I am printing NSDate like this: NSDate *date = [NSDate date]; NSString *stringDate = [data description]; Right now, it's July 1, 2011 11:43 pm. My iPod even says that on the top bar. But stringDate prints out: 2011-07-02 03:43:46 +0000 This is obviously wrong. I have used NSDate millions of times but never had this problem. What could be wrong? Thanks Your region's time offset is -04:00 ? NSDate will automatically adjust the time offset when displaying the date. Try, NSString *str = [date descriptionWithLocale:[NSLocale currentLocale]]; It will show you the correct date. Are you in the GMT -4