nsdate

MySQL returns this datetime: 2014-05-07T16:58:44.000Z How, with what datetime format I can create NSDate ? I far as I found this, but it does not work: NSDateFormatter *df = [[NSDateFormatter alloc] init]; [df setDateFormat:@"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"]; NSDate *date = [df dateFromString: valueStr]; Your format string is close, but you want to specify the milliseconds with SSS , too: [df setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSSX"]; Also, the Z in your date string stands for "Zulu" (i.e. GMT/UTC), so your dateFormat should use Z or X without quotes so that it correctly parses the string

I need a proper way to count how many unique days there are in CoreData objects with a property of type NSDate. For example, I have the following: <Object>.date = "2014-05-15 21:29:12 +0000"; <Object>.date = "2014-05-15 21:49:34 +0000"; <Object>.date = "2014-05-16 13:29:23 +0000"; <Object>.date = "2014-05-16 20:49:50 +0000"; <Object>.date = "2014-05-16 22:01:53 +0000"; <Object>.date = "2014-05-20 03:32:12 +0000"; <Object>.date = "2014-05-20 12:45:23 +0000"; <Object>.date = "2014-05-20 14:15:50 +0000"; <Object>.date = "2014-05-20 20:20:05 +0000"; In this case, the result must be 3 because there

I would like to get milliseconds from creation time of file attribute When I get file attribute, I use NSDateFormatter to convert file creation time (NSDate) to NSString. [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss:SS: A"]; ss --> seconds SS --> should be millisecond A --> milliseconds of the date I get 00 for SS and get 54487000 for A. I notice that the last three digits are always zero for NSDate come from file attribute of any files. But when I use the same formatter with the NSDate come from [NSDate date], the last three digits are not zero for A, and SS digit is not always zero.

NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init]; [timeFormat setDateFormat:@"hh:mm a"]; NSDate* sourceDate = [timeFormat dateFromString:@"19/11/2010 12:00 am"]; if(sourceDate==nil) { NSLog(@"source date nil"); } I'm using 24 hour setting in iPhone. After I change to 24 hour setting, datefromstring always return nil. I rechange to 12 hour format, it's working again. Why ? The locale needs to be set to avoid being affected by the 24-hour setting change. The format also has to match the input string (which in your example includes the date): NSDateFormatter *timeFormat = [

How do you convert any given date to milliseconds? For example, 2014-01-23 to timestamp conversion. NSDate *date = [dateFormatter dateFromString:@"2014-01-23"]; NSLog(@"date=%@",date); NSTimeInterval interval = [date timeIntervalSince1970]; NSLog(@"interval=%f",interval); NSDate *methodStart = [NSDate dateWithTimeIntervalSince1970:interval]; [dateFormatter setDateFormat:@"yyyy/mm/dd "]; NSLog(@"result: %@", [dateFormatter stringFromDate:methodStart]); Output result: 1970/30/01 Have it a try. "mm" stands for minute while "MM" stands for month. NSDateFormatter * dateFormatter = [[NSDateFormatter

I want to create a function which results the date of next Friday but I have no plan how to do it. Has anyone a good hint to me ? E.g. Get current date using NSDate, then use 'components>fromDate:' from NSCalendar to get the NSDateComponents, then add the time difference to next Friday and create a new NSDate and Bob's is your uncle. Here is my working solution for getting the next 5 Sundays in Gregorian calendar: self.nextBeginDates = [NSMutableArray array]; NSDateComponents *weekdayComponents = [[NSCalendar currentCalendar] components:NSWeekdayCalendarUnit fromDate:[NSDate date]]; int