I want to find the time (in minutes) between a date with the "yyyy-MM-dd'T'HH:mm:ss" format (Sample:"2014-02-03T11:28:00") and current time (In GMT, as the string is in GMT. I tried
NSDateFormatter *formatter;
[formatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss"];
NSDate *now = [NSDate date];
NSDate *trackingDataDate = [formatter dateFromString:timeStamp];
NSTimeInterval distance = [now timeIntervalSinceDate:trackingDataDate];
double timeInMinutes = distance / 60;
But this returns NaN. What is wrong with my code, how can I get the time between the events?
Simple mistake. You have miss allocation for NSDateFormatter. Add below line instead of NSDateFormatter *formatter;, It's working fine.
NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
Update: According to your comment, see my below code for convert to GMT Date.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"yyyy-MM-dd'T'HH:mm:ss";
NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
[dateFormatter setTimeZone:gmt];
NSString *timeStamp = [dateFormatter stringFromDate:[NSDate date]];
Try this:
NSString* string=#"26-01-2014";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-mm-yyyy"];
NSTimeZone *gmt = [NSTimeZone timeZoneWithAbbreviation:#"GMT"];
[dateFormatter setTimeZone:gmt];
NSDate *date = [dateFormatter dateFromString:string];
NSLog(#"Date = %#",date);
Related
How to get the current time based on TimeZone in objective c?
example-> Current time for Asia/Kolkata.
Try this..
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:#"dd/MM/yyyy HH:mm"];
//Create the date assuming the given string is in GMT
dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:0];
//Create a date string in the local timezone
dateFormatter.timeZone = [NSTimeZone timeZoneForSecondsFromGMT:[NSTimeZone localTimeZone].secondsFromGMT];
NSString *localDateString = [dateFormatter stringFromDate:[NSDate date]];
NSLog(#"date = %#", localDateString);
and if you want specific timezone date then see below code..
NSDate *myDate = [NSDate date];
NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc] init];
[dateFormatter1 setDateStyle:NSDateFormatterLongStyle];
[dateFormatter1 setTimeStyle:NSDateFormatterLongStyle];
[dateFormatter1 setDateFormat:#"dd/MM/yyy hh:mm a"];
NSTimeZone *timeZone = [NSTimeZone timeZoneWithName: #"Asia/Calcutta"];
[dateFormatter1 setTimeZone:timeZone];
NSString *dateString = [dateFormatter1 stringFromDate: myDate];
NSLog(#"%#", dateString);
I currently get time as UTC and I want it to be convert into local time zone
NSDate * startDate;
Example strDate - 14/9/2017 7.28 Am
Required format - 14/9/2017 1.52 pm
I need help with objective c.
NSDate * startDate ; //contain utc date
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"EEE, MMM d, yyyy - h:mm a"];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
NSString *timestamp = [dateFormatter stringFromDate:startDate];
but this is not correct time but date is correct
First convert NSString to NSDate.
NSDateFormatter *DateFormatter = [[NSDateFormatter alloc] init];
NSTimeZone *timeZoneEDT =[NSTimeZone timeZoneWithName:#"GMT"];
[DateFormatter setFormatterBehavior:NSDateFormatterBehavior10_4];
[DateFormatter setTimeZone:timeZoneEDT];
[DateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss.SSS"];
NSDate *CurrentDate = [DateFormatter dateFromString:DateStr];
Then convert GMT time to local time.
NSTimeZone* sourceTimeZone = [NSTimeZone timeZoneWithName:#"Asia/Kolkata"];
[dateFormatter setTimeZone:sourceTimeZone];
NSString *dateRepresentation = [dateFormatter stringFromDate:dateFromString];
#athira try this. it works for me.
NSDate *startDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd/M/yyyy h.mm a"];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
NSString *timestamp = [dateFormatter stringFromDate:startDate];
NSLog(#"date = %#",timestamp); //date = 14/9/2017 4.34 PM
it will print current time with proper GMT+5:30 and i have used localTimeZone.
I want to log the server time in my iOS app , I am using NHNetworkTime library to get the network time, when I try to print the following code its showing GMT, through I have chosen UTC, how to print the date time in UTC?
NSDate* datetime = [NSDate networkDate];
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:#"UTC"]]; // Prevent adjustment to user's local time zone.
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss.SSS Z z "];
NSString* dateTimeInIsoFormatForZuluTimeZone = [dateFormatter stringFromDate:datetime];
NSLog(#"%#",dateTimeInIsoFormatForZuluTimeZone);
this is printing 2016-03-09 06:51:23.406 +0000 GMT
There is no time difference between Coordinated Universal Time (UTC) and Greenwich Mean Time(GMT). you can get more info from here More info
Refer :-
-(NSString *)getUTCFormateDate:(NSDate *)localDate
{
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:#"UTC"];
[dateFormatter setTimeZone:timeZone];
[dateFormatter setDateFormat:#"yyyy-MM-dd HH:mm:ss"];
NSString *dateString = [dateFormatter stringFromDate:localDate];
[dateFormatter release];
return dateString;
}
Moreover to get time
-(NSString *)getTimeFromDate:(NSDate *)localDate
{
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc]init]autorelease];
dateFormatter.dateFormat = #"MM/dd/yy";
NSString *dateString = [dateFormatter stringFromDate: localDate];
NSDateFormatter *timeFormatter = [[[NSDateFormatter alloc]init]autorelease];
timeFormatter.dateFormat = #"HH:mm:ss";
return [timeFormatter stringFromDate: localDate];
}
I have a NSString like #"2014-11-27T10:54:08.185Z"
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy'-'MM'-'dd'T'hh':'mm':'ss'.'SSS'Z'"];
NSDate * date = [dateFormatter dateFromString:self.creationTime];
I tried a lot of different formatter strings, but the date is always nil.
Or is there another problem here?
The hour in your date string format seems to be in the 24h format.
So you need to use HH instead of hh in your dateFormat.
More info
Try
NSDateFormatter *formatter = [[NSDateFormatter alloc]init];
[formatter setDateFormat:#"yyyy'-'MM'-'dd'T'hh':'mm':'ss'.'SSS'Z'"];
NSDate *date = [NSDate dateWithTimeIntervalSince1970:self.creationTime];
self.dateLabel.text = [formatter stringFromDate:date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZ"];
NSDate *date = [dateFormatter dateFromString:#"2013-02-01T06:25:47Z"];
NSTimeZone *pdt = [NSTimeZone timeZoneWithAbbreviation:#"PDT"];
[dateFormatter setTimeZone:pdt];
[dateFormatter setDateFormat:#"HH:mm:ss zzz"];
[dateFormatter setDateFormat:#"K:mm a, z"];
NSString * updated String = [dateFormatter stringFromDate:date];
Please try this...:)
I'm parsing a JSON from my server, one of the values is a date like this: 2013-01-21 18:22:35 +00000
My problem is how to transform this date to the local time like 2013-01-21 12:22:35 -0600
I need to transform the date to other format?
Thanks!
EDIT.
Using the #Gabriele Petronella solution:
NSString * yourJSONString = #"2013-01-21 18:22:35 +0000";
NSTimeZone* localTimeZone = [NSTimeZone localTimeZone];
NSString* localAbbreviation = [localTimeZone abbreviation];
NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:#"en_US_POSIX"];
[dateFormatter setLocale:locale];
[dateFormatter setDateFormat:#"yyyy-MM-dd H:mm:ss Z"];
NSDate *aDate = [dateFormatter dateFromString:yourJSONString];
NSTimeZone *timezone = [NSTimeZone timeZoneWithName:localAbbreviation];
[dateFormatter setTimeZone:timezone];
NSLog(#"%#", [dateFormatter stringFromDate:aDate]);
Everything works fine!
You use a NSDateFormatter to read the date from a NSString, then you can display the date changing the timezone using another (possibly the same) NSDateFormatter.
NSString * yourJSONString = #"2013-01-21 18:22:35 +0000";
NSDateFormatter * dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterFullStyle
];
[dateFormatter setDateStyle:NSDateFormatterFullStyle];
NSDate * aDate = [dateFormatter dateFromString:yourJSONString];
NSTimeZone * timezone = [NSTimeZone timeZoneWithName:#"America/Chicago"];
[dateFormatter setTimeZone:timezone];
NSLog(#"%#", [dateFormatter stringFromDate:aDate);
Please note that the timezone is just a matter of display, whereas the NSDate object is just an abstraction to represent the date and it is independent by its displaying.
NSDateFormatter *dateFormatter=[[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:#"yyyy-MM-dd hh:mm:ss"];
NSTimeZone *timeZone = [NSTimeZone localTimeZone]; [dateFormatter setTimeZone:timeZone];
NSString *myCurrentDeviceDate = [dateFormatter stringFromDate:[NSDate date]];