The error does not happen in the code you posted. It means somewhere you have something that is supposed to be an NSDate and instead it’s nil. As for the humor in the error message, I have never seen that message, but +1 to Apple. Some engineer in the Cocoa division is as funny as … Read more
Here’s what I use: NSString * timestamp = [NSString stringWithFormat:@”%f”,[[NSDate date] timeIntervalSince1970] * 1000]; (times 1000 for milliseconds, otherwise, take that out) If You’re using it all the time, it might be nice to declare a macro #define TimeStamp [NSString stringWithFormat:@”%f”,[[NSDate date] timeIntervalSince1970] * 1000] Then Call it like this: NSString * timestamp = TimeStamp; … Read more
Also when using a date format string using the correct format is important. @”YYYY” is week-based calendar year. @”yyyy” is ordinary calendar year. You can go through the whole blog, its a good to give it a look https://web.archive.org/web/20150423093107/http://realmacsoftware.com/blog/working-with-date-and-time http://realmacsoftware.com/blog/working-with-date-and-time (dead link)
you get the detail information from Apple Dateformatter Document.If you want to set the dateformat for your dateString, see this link , the detail dateformat you can get here for e.g , do like let formatter = DateFormatter() // initially set the format based on your datepicker date / server String formatter.dateFormat = “yyyy-MM-dd HH:mm:ss” … Read more
Another option is to use the monthSymbols method: int monthNumber = 11; //November NSDateFormatter *df = [[[NSDateFormatter alloc] init] autorelease]; NSString *monthName = [[df monthSymbols] objectAtIndex:(monthNumber-1)]; Note that you’ll need to subtract 1 from your 1..12 monthNumber since monthSymbols is zero-based.
Just convert it to a date using NSDateFormatter and the “h:mm a” format and convert it back to a string using the “HH:mm” format. Check out this date formatting guide to familiarize yourself with this material. let dateAsString = “6:35 PM” let dateFormatter = NSDateFormatter() dateFormatter.dateFormat = “h:mm a” dateFormatter.locale = Locale(identifier: “en_US_POSIX”) // fixes … Read more
Here you are, NSDate *currentDate = [NSDate date]; NSCalendar* calendar = [NSCalendar currentCalendar]; NSDateComponents* components = [calendar components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay fromDate:currentDate]; // Get necessary date components [components month]; //gives you month [components day]; //gives you day [components year]; // gives you year You can use NSDateComponents for that as above. Please visit this page for details.
@Chuck’s answer is correct, and lead me to the following code. Thought I’d share: NSDateComponents *comps = [[NSDateComponents alloc] init]; [comps setDay:10]; [comps setMonth:10]; [comps setYear:2010]; NSDate *date = [[NSCalendar currentCalendar] dateFromComponents:comps];
Use NSDateFormatter: NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; NSLocale *enUSPOSIXLocale = [NSLocale localeWithLocaleIdentifier:@”en_US_POSIX”]; [dateFormatter setLocale:enUSPOSIXLocale]; [dateFormatter setDateFormat:@”yyyy-MM-dd’T’HH:mm:ssZZZZZ”]; [dateFormatter setCalendar:[NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian]]; NSDate *now = [NSDate date]; NSString *iso8601String = [dateFormatter stringFromDate:now]; And in Swift: let dateFormatter = DateFormatter() let enUSPosixLocale = Locale(identifier: “en_US_POSIX”) dateFormatter.locale = enUSPosixLocale dateFormatter.dateFormat = “yyyy-MM-dd’T’HH:mm:ssZZZZZ” dateFormatter.calendar = Calendar(identifier: .gregorian) let iso8601String = … Read more
this is what i used: NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setDateFormat:@”yyyy-MM-dd”]; NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init]; [timeFormat setDateFormat:@”HH:mm:ss”]; NSDate *now = [[NSDate alloc] init]; NSString *theDate = [dateFormat stringFromDate:now]; NSString *theTime = [timeFormat stringFromDate:now]; NSLog(@”\n” “theDate: |%@| \n” “theTime: |%@| \n” , theDate, theTime); [dateFormat release]; [timeFormat release]; [now release];