nsdateformatter

问题 I wants to display dates/days from Monday to Friday excluding Saturday/Sunday as mentioned in the image below. My Scenario: When screen loads the current week should display. On previous button click ( DisplayedWeek - 1 ) On Next button click ( DisplayedWeek + 1 ). My Work , After some research this is what i have tried. let calendar = Calendar.current let currentDate = calendar.startOfDay(for: Date()) /* value = 0 for current, value = 1 for next, value = -1 for previous week. */ let nextWeek

问题 I am displaying time. It will show me :TIME :2012-06-18 23:00:00 +0000 But after using NSDateFormatter I do not know why it is giving me 00:00:00 AM NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"HH:mm:ss a"]; NSLog(@"TIME :%@",self.startDate); NSDate *date = [NSDate date]; NSString * _startTime = [dateFormatter stringFromDate:date]; NSLog(@"current time : %@",_startTime); NSString * _startTime1 = [dateFormatter stringFromDate:self.startDate];

问题 In the Apple Docs, they say that NSDateFormatter uses the Unicode for spec. I've read the spec, but I'm having troubles interpreting this date: NSDateFormatter *frm = [[NSDateFormatter alloc] init]; [frm setDateFormat:@"EEE MMM dd HH:mm:ss ZZZ yyyy"]; NSLog(@"Tue Oct 13 09:24:15 +0000 2009 becomes %@", [frm dateFromString:@"Tue Oct 13 09:24:15 +0000 2009"]); This code prints out: 2009-10-13 11:37:40.334 test2[1704:20b] Tue Oct 13 09:24:15 +0000 2009 becomes (null) 回答1: Sorry folks, figured it

问题 I am trying to parse this date timestamp Begin to string: Wed, 11 Sep 2013 08:51:41 EEST This issue with only EEST , I have tried z or zzz or V, nothing happened. Date formatter always getting NULL. While I am cutting EEST from string, everything goes OK. Could anyone suggest, how to solve this issue? Thanks UPDATE: dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_EN_POSIX"]]; [dateFormat setTimeZone:[NSTimeZone

问题 I am trying to parse this date timestamp Begin to string: Wed, 11 Sep 2013 08:51:41 EEST This issue with only EEST , I have tried z or zzz or V, nothing happened. Date formatter always getting NULL. While I am cutting EEST from string, everything goes OK. Could anyone suggest, how to solve this issue? Thanks UPDATE: dateFormat = [[NSDateFormatter alloc] init]; [dateFormat setLocale:[[NSLocale alloc] initWithLocaleIdentifier:@"en_EN_POSIX"]]; [dateFormat setTimeZone:[NSTimeZone

问题 I have a problem with converting String to NSDate. In my text field when user tap on it, is a possibility to chose a date using UIDatePicker . String as a date in TextField looks like that: "yyyy-mm-dd" Now when I try to convert date for example on 2016-05-13 using this method: func changeStringToNSDate(){ let dateFormatter = NSDateFormatter() dateFormatter.dateFormat = "yyyy-mm-dd" let from = moreSorts.fromDatePickerTextField.text! let fromDate = dateFormatter.dateFromString(from) print

问题 Im trying to convert a bunch of NSStrings into NSDate objects. Here is an example string: 2013-04-25T15:51:30.427+1.00 But I can't figure out what format it is in, so far I have (The question marks are the bits I'm stumped with): yyyy-MM-ddTHH:mm:ss????zzz The main problem I'm having is with the '.427' part although if I'm making a mistake elsewhere, let me know :) Does anyone have any ideas? Or could point me to a list of all the possible date format specifiers? I found this: http://msdn

问题 I'm trying to format a date from a string into another format. For example: 2012-05-29 23:55:52 into 29/05 *newline* 2010 . I just don't get the logics behind NSDate and NSDateFormatter, I think.. Any help will be appreciated. Thanks :) 回答1: You will need to create an NSDateFormatter, and then set it's dateFormat to match the first date you have, eg: NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss"]; That will set your date

问题 I have app that is a basic timer. It tracks the number of seconds the app has run. I want to convert it so the seconds (NSUInteger) are displayed like: 00:00:12 (hh:mm:ss). So I've read this post: NSNumber of seconds to Hours, minutes, seconds From which I wrote this code: NSDate *date = [NSDate dateWithTimeIntervalSince1970:[[self meeting] elapsedSeconds]]; NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"hh:mm:ss"]; It works fine, but it starts out

问题 Per http://developer.apple.com/iphone/library/documentation/Cocoa/Reference/Foundation/Classes/NSDateFormatter_Class/Reference/Reference.html The init method of NSDateFormatter is "Available in iPhone OS 2.0 through iPhone OS 3.2", and therefore not in 4.0. Now, it certainly works, but this seems odd. Is this is a mistake or is there some other way to create a NSDateFormatter ? 回答1: This deprecation is just apple cleaning up the headers for NSDateFormatter. init is already declared in