nsdate

This question already has answers here : Closed 6 years ago . How to get nsdate with millisecond accuracy? (3 answers) For example: assume NSDate tempdate = "05-23-2013" . I want this value to be converted into milliseconds. How can I do this with Objective-C? alexcristea There is a similar post here and here . Basically you have get the second form the reference date (1 January 2001, GMT) and multiply it with 1000. NSTimeInterval seconds = [NSDate timeIntervalSinceReferenceDate]; double milliseconds = seconds*1000; Cheers! AB Bolim The timeIntervalSince1970 will return seconds from 1970.

I am trying to get a countdown timer to a specific date. I use: -(void) viewWillAppear:(BOOL)animated { NSString *str =@"12/27/2013"; NSDateFormatter *formatter = [[NSDateFormatter alloc]init]; [formatter setDateFormat:@"MM/dd/yyyy"]; NSDate *date = [formatter dateFromString:str]; NSTimeInterval numberOfSecondsUntilSelectedDate = [date timeIntervalSinceNow]; NSInteger numberOfDays = numberOfSecondsUntilSelectedDate / 86400; startTime = [[NSDate date] retain]; secondsLeft = numberOfDays; NSLog(@"number%f", numberOfSecondsUntilSelectedDate); [self countdownTimer]; } - (void)updateCounter:

I am normally pretty good with this, but I am having trouble with the NSDate object. I need a NSDate object set for tomorrow at 8am (relatively). How would I do this and what is the simplest method? John Sauer Here's how WWDC 2011 session 117 - Performing Calendar Calculations taught me: NSDate* now = [NSDate date] ; NSDateComponents* tomorrowComponents = [NSDateComponents new] ; tomorrowComponents.day = 1 ; NSCalendar* calendar = [NSCalendar currentCalendar] ; NSDate* tomorrow = [calendar dateByAddingComponents:tomorrowComponents toDate:now options:0] ; NSDateComponents*

I have a date in string format just like 30-11-2012 . I want the date next to it like 01-12-2012 again in string format. Is there any way of getting it? You should use NSCalendar for best compatibility NSDate *today = [NSDate dateWithNaturalLanguageString:@"2011-11-30"]; NSCalendar *calendar = [NSCalendar currentCalendar]; NSDateComponents *dayComponent = [NSDateComponents new]; dayComponent.day = 1; today = [calendar dateByAddingComponents:dayComponent toDate:today options:0]; //2011-12-01 12:00:00 +0000 I got the answer by someone I forget the name, I was about to accept his/her answer but