nscalendar

I'm trying to work out how to decide if a given timestamp occurs today, or +1 / -1 days. Essentially, I'd like to do something like this (Pseudocode) IF days_from_today(timestamp) == -1 RETURN 'Yesterday' ELSE IF days_from_today(timestamp) == 0 RETURN 'Today' ELSE IF days_from_today(timestamp) == 1 RETURN 'Tomorrow' ELSE IF days_from_today(timestamp) < 1 RETURN days_from_today(timestamp) + ' days ago' ELSE RETURN 'In ' + days_from_today(timestamp) + ' ago' Crucially though, it needs to be in Swift and I'm struggling with the NSDate / NSCalendar objects. I started with working out the time

i need to calculate the weekday for a given date, however, depending on the calendar a week can star on Monday and somwhere on Sunday so i wanted to set it, to start on Monday, using [[NSCalendar currentCalendar] setFirstWeekday:2]; however, the calculation outcome is the same { [[NSCalendar currentCalendar] setFirstWeekday:1]; NSDateComponents *weekdayComponents = [[NSCalendar currentCalendar] components:(NSDayCalendarUnit | NSWeekdayCalendarUnit) fromDate:date]; NSInteger weekday = [weekdayComponents weekday] - 1; NSLog(@"%d", weekday); } { [[NSCalendar currentCalendar] setFirstWeekday:2];

I want to make a UILocalNotification repeat every week, before iOS7 I would use localNotification.repeatInterval = NSWeekCalendarUnit - except NSWeekCalendarUnit has been deprecated. The docs say: "Use NSCalendarUnitWeekOfMonth or NSCalendarUnitWeekOfYear, depending on which you mean" But I don't know what the difference is, so I don't know which one I mean. These don't appear to be documented but most likely NSCalendarUnitWeekOfYear will be a value from 1-53 (or maybe 0-52) representing the week number within the calendar year while NSCalendarUnitWeekOfMonth will be 1-5 (or maybe 0-4)

This question already has an answer here: Converting NSString to NSDate (and back again) 17 answers How to get current time as a String (not as Date) date time format. yyyy-MM-dd HH:mm:ss This is the way I figure it out. // Get today date as String func getTodayString() -> String{ let date = Date() let calender = Calendar.current let components = calender.dateComponents([.year,.month,.day,.hour,.minute,.second], from: date) let year = components.year let month = components.month let day = components.day let hour = components.hour let minute = components.minute let second = components.second

Seems like a simple thing but I can't seem to find a way to do it. It would be great to see a couple different methods. Oded Ben Dov @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]; You can use this NSString *dateString = @"03-Sep-11"; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; dateFormatter.dateFormat = @"dd-MMM-yy"; NSDate *date = [dateFormatter

I am expecting 2010-10-11 00:00:00 But instead I receive 2010-10-10 21:00:00 +0000 I know, that I can add a few hours and receive desired date, but I do not understand why I get previous day with 21 hours... Please, help! NSDateComponents *comps = [[NSDateComponents alloc] init]; [comps setYear:2010]; [comps setMonth:10]; [comps setDay:11]; [comps setHour:0]; [comps setMinute:0]; [comps setSecond:0]; NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDate *retDate = [cal dateFromComponents:comps]; KingofBliss I think your problem may be solved by setting

I'm trying to figure out what day (i.e. Monday, Friday...) of any given date (i.e. Jun 27th, 2009) Thank you. I've been doing: NSDateFormatter* theDateFormatter = [[[NSDateFormatter alloc] init] autorelease]; [theDateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4]; [theDateFormatter setDateFormat:@"EEEE"]; NSString *weekDay = [theDateFormatter stringFromDate:[NSDate date]]; This has the added bonus of letting you choose how you'd like the weekday to be returned (by changing the date format string in the setDateFormat: call Lots more information at: http://developer.apple.com