I think the title says it all.
I can get the current time, but I need the current time + 1 hour too.
NSDate *today = [NSDate date];
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"dd MMM YYYY hh:mm"];
NSString *dateString = [dateFormat stringFromDate:today];
myUILabel.text = dateString;
How do I format the date so it will add 1 hour to the current time?
NSDate *dateAfter_1hour = [NSDate dateWithTimeInterval:60*60 sinceDate:[NSDate date]];
UIDatePicker *datepicker = [[UIDatePicker alloc]init];
[datepicker setDate:dateAfter_1hour animated:YES];
In Swift:
theDateAnHourFromNow = NSDate().dateByAddingTimeInterval(3600)
Related
I am pretty new to Objective C and it has been horrible experience to get the current device datetime in systemTimeZone. This is what I have:
NSDate *now = [NSDate date];
NSDateFormatter *DateFormatter=[[NSDateFormatter alloc] init];
[DateFormatter setTimeZone:[NSTimeZone systemTimeZone]];
[DateFormatter setDateFormat:#"MM-dd-yyyy HH:mm"];
NSString *currentDateTime = [DateFormatter stringFromDate:now];
NSDate *curDate = [DateFormatter dateFromString:currentDateTime];
Line 5 NSString has the correct local datetime in currentDateTime string variable. But Line 6 again switches back to UTC DateTime. I do not understand why it would switch back to UTC even though the DateFormatter has the systemTimezone set. Can you please help me find out what is that I am missing?
Just set the timeZone in the dateFormatter, This code is enough
NSString *dateString = #"24 08 2011 09:45PM";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd MM yyyy hh:mma"];
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithAbbreviation:#"BST"];
[dateFormatter setTimeZone:sourceTimeZone];
NSDate *dateFromString = [dateFormatter dateFromString:dateString];
The dateFromString will now have the date 24 08 2011 08:45PM(GMT).. Then to convert this to string with local time just code the following,
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[formatter setTimeZone:[NSTimeZone localTimeZone]];
[formatter setLocale:[NSLocale systemLocale]];
[dateFormatter setDateFormat:#"dd MM yyyy hh:mma"];
NSString *stringFromDAte = [dateFormatter stringFromDate:dateString];
or You can also try this one:
NSTimeInterval seconds; // assume this exists
NSDate* ts_utc = [NSDate dateWithTimeIntervalSince1970:seconds];
NSDateFormatter* df_utc = [[[NSDateFormatter alloc] init] autorelease];
[df_utc setTimeZone:[NSTimeZone timeZoneWithName:#"UTC"]];
[df_utc setDateFormat:#"yyyy.MM.dd G 'at' HH:mm:ss zzz"];
NSDateFormatter* df_local = [[[NSDateFormatter alloc] init] autorelease];
[df_local setTimeZone:[NSTimeZone timeZoneWithName:#"EST"]];
[df_local setDateFormat:#"yyyy.MM.dd G 'at' HH:mm:ss zzz"];
NSString* ts_utc_string = [df_utc stringFromDate:ts_utc];
NSString* ts_local_string = [df_local stringFromDate:ts_utc];
// you can also use NSDateFormatter dateFromString to go the opposite way
Table of formatting string parameters:
https://waracle.com/iphone-nsdateformatter-date-formatting-table/
If performance is a priority, you may want to consider using strftime
https://developer.apple.com/legacy/library/documentation/Darwin/Reference/ManPages/man3/strftime.3.html
i want to convert nsstring to nsdate
i have string have this value
08:00:00
i want to convert it so i wrote this code
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"HH:mm:ss"];
NSDate *startDate = [formatter dateFromString:_startTime];
NSLog(#"%#",startDate);
_startTime have this value = 08:00:00
but startDate after i display it , it had this value
2000-01-01 06:00:00 +0000
Update I wrote this code
NSString *dateString = _startTime;
NSDateFormatter *formatter= [[NSDateFormatter alloc] init];
// this is imporant - we set our input date format to match our input string
// if format doesn't match you'll get nil from your string, so be careful
[formatter setDateFormat:#"HH:mm:ss"];
NSDate *startDate = [[NSDate alloc] init];
// voila!
startDate = [formatter dateFromString:dateString];
NSLog(#"%#",startDate);
i want the output be 08:00:00
You can't have NSDate without a date !
if you want to access the time from an NSDate you'll need to use NSDateComponents (or NSTimeInterval).
To access the time from your NSDate using NSDateComponents :
NSString *startTime = #"08:00:00";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"HH:mm:ss"];
NSDate *startDate = [formatter dateFromString:startTime];
NSCalendar *calendar = [NSCalendar currentCalendar];
NSDateComponents *components = [calendar components:(NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond) fromDate:startDate];
NSLog(#"%d:%d:%d", [components hour], [components minute], [components second]);
I don't get what's the purpose of changing the string _startTime, do you want to compare dates ?
Edit :
NSString *startTime = #"08:00:00";
NSString *endTime = #"23:00:00";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"HH:mm:ss"];
NSDate *startDate = [formatter dateFromString:startTime];
NSDate *endDate = [formatter dateFromString:endTime];
NSTimeInterval difference = [endDate timeIntervalSinceDate:startDate];
NSInteger temp = difference;
NSDate* newDate = [[NSDate alloc] init];
for (int i = 0; (i < difference && [newDate compare:startDate] == NSOrderedDescending); ++i)
{
newDate = [startDate dateByAddingTimeInterval:(temp - i*60*10)];
NSLog(#"%#",newDate);
}
run this and use NSDateComponents to log what you want !
Use this code i think this one help you..
NSString *dateStr = #"08:00:00";
NSDateFormatter *datFormatter = [[NSDateFormatter alloc] init];
[datFormatter setDateFormat:#"HH:mm:ss"];
NSDate* mydate = [datFormatter dateFromString:dateStr];
NSLog(#"date: %#", [datFormatter stringFromDate:mydate]);
i think this is what you really want...
I had this code working for iOS5, but I just teste
NSDate *now = [NSDate date];
NSString *strDate = [[NSString alloc] initWithFormat:#"%#",now];
Does anyone know easy solution of rewriting this. The format of the date should be
dd mm yyyy
The correct way to format a date as a string is to use an NSDateFormatter. You can set the style to something appropriate for the user’s current locale with the -setDateStyle: method, or set the format to a particular string with -setDateFormat:.
Try this one , Definitely will get Proper solution:
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"yyyy-MM-dd"];//as per your requirement
NSDateFormatter *timeFormat = [[NSDateFormatter alloc] init];
[timeFormat setDateFormat:#"HH:mm:ss"]; //as per your requirement
NSDate *now = [[NSDate alloc] init];
NSString *theDate = [dateFormat stringFromDate:now];
NSString *theTime = [timeFormat stringFromDate:now];
NSLog(#"theDate:%# "theTime:%#" , theDate, theTime);
I'm building an iPhone app to take times: a car has to get at a given time at a point, so if the car is sooner or later, gets points.
I need to obtain the most precise timing as I can, so I want to use milliseconds, but as far results are disappointing.
The time is typed on a TextField, let's say 12:17:22 and the code is the following:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
[dateFormatter setDateFormat:#"HH:mm:ss"];
timeLegStart = [NSDate new];
timeLegStart = [dateFormatter dateFromString:setStartTime.text];
NSLog(#"timeLegStart = %#",timeLegStart);
The output is 1970-01-01 11:17:22 +0000, and I'd like it to be 12:17:22:000
Set your NSDateFormatter's properties like this (replacing with your time zone info):
NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:#"pt_BR"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithName:#"America/Sao_Paulo"]];
[dateFormatter setDateFormat:#"HH':'mm':'ss' 'z"];
[dateFormatter setLocale:locale];
The problem here is that NSDate comprises of date and time and they are not separately available. When you are giving the input date with time specs only it load the calendar start date values with the time you provided and creates a date. Hence here comes the date as output.
Actually there is no problem to work with that.
You can use the same formatter to get the time retrieved back:
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSDate* timeLegStart = [NSDate new];
timeLegStart = [dateFormatter dateFromString:#"12:12:12"];
NSLog(#"timeLegStart = %#",[dateFormatter stringFromDate:timeLegStart]);
It will give you:
timeLegStart = 12:12:12
EDIT : when logging NSDate it will be in GMT format only.Since you set the timezone to local there date will be always displayed like what you got.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:0]];
[dateFormatter setDateFormat:#"HH:mm:ss"];
NSDate* timeLegStart = [NSDate new];
timeLegStart = [dateFormatter dateFromString:#"12:12:12"];
NSLog(#"timeLegStart = %#",timeLegStart);
Will give you:
2000-01-01 12:12:12 +0000
Well, I've sorted it out this way:
- (void)fijaTiempoInicio
{
//getting current day
NSDateComponents *dateComponents = [[NSCalendar currentCalendar] components:~ NSTimeZoneCalendarUnit fromDate:[NSDate date]];
[dateComponents setTimeZone:[NSTimeZone timeZoneWithName:#"Europe/Spain"]];
NSDate *currentDate = [[NSCalendar currentCalendar] dateFromComponents:dateComponents];
//extracting year, month and day from current date
NSDateFormatter *df = [[NSDateFormatter alloc]init];
[df setDateFormat:#"dd"];
NSString *currentDayString = [NSString stringWithFormat:#"%#",[df stringFromDate:currentDate]];
[df setDateFormat:#"MM"];
NSString *currentMonthString = [NSString stringWithFormat:#"%#",[df stringFromDate:currentDate]];
[df setDateFormat:#"yyyy"];
NSString *currentYearString = [NSString stringWithFormat:#"%#", [df stringFromDate:currentDate]];
NSDateFormatter *ft = [[NSDateFormatter alloc]init];
[ft setTimeZone:[NSTimeZone localTimeZone]];
[ft setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSString *tempDate = [NSString stringWithFormat:#"%#-%#-%# %#",currentYearString,currentMonthString,currentDayString,txtTiempoInicioTramo.text];
NSLog(#"tempDate= %#",tempDate);
startTime = [ft dateFromString:tempDate];
NSLog(#"startTime= %#",startTime);
Then, anothe method calculate the difference between two NSDates, which is a figure in milliseconds -a float
- (IBAction)btnCapturarTiempo:(id)sender
{
NSDateFormatter *formatCarTime = [[NSDateFormatter alloc]init];
[formatCarTime setDateFormat:#"HH:mm:ss"];
[formatCarTime setTimeZone:[NSTimeZone timeZoneWithName:#"Europe/Madrid"]];
carTime = [NSDate date];
difference = [carTime timeIntervalSinceDate:startTime];
labelTiempoCoche.text = [NSString stringWithFormat:#"%f",difference];
i want to get date in 2 labels like this
Label1:-> Tuesday
Label2:-> 2 June 2010
how can i get this value?
This code will get you the strings you require to set the labels:
NSDate *today = [NSDate date];
NSDateFormatter *weekdayFormatter = [[[NSDateFormatter alloc] init] autorelease];
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat: #"d MMMM yyyy"];
[weekdayFormatter setDateFormat: #"EEEE"];
NSString *formattedDate = [formatter stringFromDate: today];
NSString *weekday = [weekdayFormatter stringFromDate: today];
The date formatters are controlled through this standard: Unicode Date Formats
[label1 setText:#"Tuesday"];
[label2 setText:#"2 June 2010"];
Or did you need something different?
Hello You can get Day and Date From this code
and here weekday give you the day Example: Monday,Tuesday for re
NSDate *today = [NSDate date];
NSDateFormatter *weekdayFormatter = [[[NSDateFormatter alloc] init] autorelease];
NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat: #"d MMMM yyyy"];
[weekdayFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[weekdayFormatter setDateFormat: #"EEEE"];
NSString *formattedDate = [formatter stringFromDate: today];
NSString *weekday = [weekdayFormatter stringFromDate: today];
In swift, you can do like that:
let today = Date()
let weekdayFormatter = DateFormatter()
let formatter = DateFormatter()
formatter.dateFormat = "d MMMM yyyy"
weekdayFormatter.dateFormat = "EEEE"
let formattedDate = formatter.string(from: today)
let weekday = weekdayFormatter.string(from: today)