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];
}
Related
My date and time is 20-Nov-2019 21:09 Which is in UTC 24 hours format. now I want to convert it into local time in 12 hours formate. 30-Nov-2019 08:00 AM like this.
My code is :
// create dateFormatter with UTC time format
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:#"dd-MMM-yyyy HH:mm"];
[dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:#"UTC"]];
// change to a readable time format and change to local time zone
[dateFormatter setDateFormat:#"dd-MMM-yyyy HH:mm a"];
[dateFormatter setTimeZone:[NSTimeZone localTimeZone]];
NSString *timestamp = [dateFormatter stringFromDate:date];
My code when i send my local time 12 formate into 24 hours UTC
-(NSString *)getUTCFormateDate:(NSDate *)localDate
{
// NSLog(#"%#", localDate);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
NSTimeZone *timeZone = [NSTimeZone timeZoneWithName:#"UTC"];
[dateFormatter setTimeZone:timeZone];
[dateFormatter setDateFormat:#"dd-MMM-yyyy HH:mm"];
NSLocale *twelveHourLocale = [[NSLocale alloc] initWithLocaleIdentifier:#"en_US_POSIX"];
dateFormatter.locale = twelveHourLocale;
NSTimeInterval timeZoneoffset = [[NSTimeZone defaultTimeZone] secondsFromGMT];
NSTimeInterval utcTimeInterval = [localDate timeIntervalSinceReferenceDate] - timeZoneoffset;
NSDate *utcCurrentDate = [NSDate dateWithTimeIntervalSinceReferenceDate:utcTimeInterval];
NSString *dateString = [dateFormatter stringFromDate:utcCurrentDate];
// NSLog(#"dateString %#", dateString);
return dateString;
}
-(NSDate *)getUTCDate:(NSString *)currentDate{
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:#"dd-MMM-yyyy HH:mm"];
NSDate *date1 = [dateFormat dateFromString:currentDate];
if (date1 == nil){
[dateFormat setDateFormat:#"dd-MMM-yyyy hh:mm a"];
date1 = [dateFormat dateFromString:currentDate];
}
return date1;
}
I think you are doing too much. The format "hh" is the hour in 12-hour format, HH is 24-hour format. You should not have to set the locale for that (though setting to en_US_POSIX does avoid the user's 24-hour preference in the [NSLocale currentLocale] instance which can override that on iOS).
NSDate is an absolute instance in time. You need to apply a calendar and time zone with an NSDateFormatter to get numeric year/month/day etc. values out of it, but you don't need to adjust the offset to the reference date (that is changing the actual date, not just reformatting it in a different time zone).
NSString *utcString = #"20-Nov-2019 21:09";
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.timeZone = [NSTimeZone timeZoneWithName:#"UTC"];
formatter.locale = [NSLocale localeWithLocaleIdentifier:#"en_US_POSIX"];
formatter.dateFormat = #"dd-MMM-yyyy HH:mm";
NSDate *date = [formatter dateFromString:utcString];
formatter.timeZone = [NSTimeZone localTimeZone]; // GMT-5 for me
formatter.dateFormat = #"dd-MMM-yyyy hh:mm a";
NSLog(#"date: %#", [formatter stringFromDate:date]);
// date: 20-Nov-2019 04:09 PM
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'm getting time in HH:mm:ss format from web service and it is in Argentina(GMT-3) time zone. I want to convert this time into full date (dd-MM-yyyy HH:mm:ss) and finally convert it into device local time zone's date.
Here is my code
-(NSString *)getLocalTimeStringFrom:(NSString *)sourceTime
{
static NSDateFormatter* df = nil;
static NSDateFormatter* df1 = nil;
if (!df) {
df = [[NSDateFormatter alloc]init];
df.dateFormat = #"dd-MM-yyyy HH:mm:ss";
}
if (!df1) {
df1 = [[NSDateFormatter alloc]init];
df1.dateFormat = #"dd-MM-yyyy";
}
NSTimeZone *sourceZone = [NSTimeZone timeZoneWithAbbreviation:#"ART"];
[df setTimeZone: sourceZone];
[df1 setTimeZone: sourceZone];
NSString *artDate = [df1 stringFromDate:[NSDate date]]; // get 29-09-2015
NSString* timeStamp = [artDate stringByAppendingString:[NSString stringWithFormat:#" %#",sourceTime]]; // get 29-09-2015 00:05:00, if sourceTime is 00:05:00
NSDate *art = [df dateFromString:timeStamp];
NSLog(#"ART date %#" , art);//ART date 2015-09-29 03:05:00 +0000
NSTimeZone *localTimeZone = [NSTimeZone systemTimeZone];
[df setTimeZone: localTimeZone];
NSLog(#"Local date %#" , [df stringFromDate: art]);
return [df stringFromDate: ds];
}
The problem is that i'm getting UTC date in art (as commented in code),please note that the value of art is 2015-09-29 03:05:00 +0000 which is in UTC and format is yyyy-MM-dd HH:mm:ss, but is should be in ART and dd-MM-yyyy HH:mm:ss. I tried some code from net but didn't get solution. What is wrong in this code?
I use this:
NSDateFormatter* serverDf = [[NSDateFormatter alloc] init];
[serverDf setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:-3*60*60]];
[serverDf setDateFormat:#"dd-MM-yyyy HH:mm:ss"];
NSDate* gmtDate = [serverDf dateFromString:timeStamp];
// DDLogVerbose(#"DateTime in GMT: %#", gmtDate);
NSDateFormatter* localDF = [[NSDateFormatter alloc] init];
[localDF setDateFormat:#"dd-MM-yyyy HH:mm:ss"];
[localDF setLocale:[[NSLocale alloc] initWithLocaleIdentifier:#"en_US_POSIX"]];
NSString *localDate = [localDF stringFromDate:gmtDate];
May you just want a formate NSString , but not a NSDate,
Because I think NSDate will add a '+0000'
Try this.
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ss"];
NSDate *date = [dateFormatter dateFromString:yourString];
NSString *str = [dateFormatter stringFromDate:date];
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);
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]];