I want to convert my timestamp value 1308031456 to NSDate format (which yields the value Tue, 14 Jun 2011 06:04:16 GMT in online web conversion). How would I convert between the two programmatically?
OBJ - C:
Use dateWithTimeIntervalSince1970:,
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeStamp];
SWIFT:
Use init(timeIntervalSince1970:)
let date = NSDate(timeIntervalSince1970:timeStamp)
You can use the use the method dateWithTimeIntervalSince1970: to convert the timestamp you've which is the epoch time.
NSDate * myDate = [NSDate dateWithTimeIntervalSince1970:1308031456];
In obj c
double timeStamp = 1513330403393;
NSTimeInterval unixTimeStamp = timeStamp / 1000.0;
NSDate *exactDate = [NSDate dateWithTimeIntervalSince1970:unixTimeStamp];
NSDateFormatter* dateFormatter = [[NSDateFormatter alloc] init];
dateFormatter.dateFormat = #"dd/MM/yyy hh:mm a";
NSString *finalate = [dateFormatter stringFromDate:exactDate];
In Swift
let timeStamp = 1513330403393
let unixTimeStamp: Double = Double(timeStamp) / 1000.0
let exactDate = NSDate.init(timeIntervalSince1970: unixTimeStamp)
let dateFormatt = DateFormatter();
dateFormatt.dateFormat = "dd/MM/yyy hh:mm a"
print(dateFormatt.string(from: exactDate as Date))
See the various example on date formatting and getting date from timestamp from apple
Use Formatter Styles to Present Dates and Times With the User’s Preferences
Convert TimeStamp to NSDate in Objective-C
Here is a code piece which lets you convert the unix type timestamp to Formatted Date
NSString * timeStampString =#"1304245000";
NSTimeInterval _interval=[timeStampString doubleValue];
NSDate *date = [NSDate dateWithTimeIntervalSince1970:_interval];
NSDateFormatter *_formatter=[[NSDateFormatter alloc]init];
[_formatter setDateFormat:#"dd.MM.yyyy"];
NSString *_date=[_formatter stringFromDate:date];
This will print _date something like 05.03.2011
Related
in my application I use NSDate and NSDateformater to show the hour in the following format : HH:mm. When I pass a timestamp that represents midnight for example: 1603843200000
I expect to get the hour as 00:00, instead I get 24:00. How can I get the hour as 00:00?
Here's the code I use to format the timestamp:
NSNumber* timeStamp = currentConsumption.timestamp; // 1603843200000
NSDate* date = [NSDate dateWithTimeIntervalSince1970:([timeStamp longLongValue]/1000)];
NSDateFormatter* df = [NSDateFormatter new];
df.dateFormat = self->graphDateFormat; // #"k:mm"
if(self->graphType == day){
[df setTimeZone:[NSTimeZone timeZoneWithName:#"UTC"]];
}
return [df stringFromDate:date];
The problem was that I set the format to be k:mm instead HH:mm.
I have a date in timestamp which looks something like this: 1474914600000
Now, I want to covert this timestamp to NSDate in format of dd-mm-yyyy.
How can this be done in objective c?
You need to convert your timestamp to NSDate and then get NSDate in your desired format. Also your timestamp seems to be in millisecond so you will have to divide it be 1000. You can use below code:
double timeStamp = 1474914600000;
NSTimeInterval timeInterval=timeStamp/1000;
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeInterval];
NSDateFormatter *dateformatter=[[NSDateFormatter alloc]init];
[dateformatter setDateFormat:#"dd-MM-yyyy"];
NSString *dateString=[dateformatter stringFromDate:date];
dateString value as an output will be: "27-09-2016"
Hope it helps.
To elaborate on balkaran's answer incase you're new to the iOS world. The timestamp you provided seems to go down to milliseconds which you wouldn't need for day times that's why he's dividing by 1000. You would use the dateformatter as follows to return an NSString you can use with the formatted date.
NSDate *date = [NSDate dateWithTimeIntervalSince1970:1474914600000];
NSDateFormatter *formatter = [NSDateFormatter new];
formatter.dateFormat = #"dd-MM-yyyy";
NSString *formattedDate = [formatter stringFromDate:date];
use this:
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeStamp/1000];
then convert your date in the format you want.
I have the date string "2016-04-01T05:00:00+08:00" and I want to convert it into number of seconds since 1 January 1970. I am doing like this:
NSDateFormatter *parsingFormatter = [NSDateFormatter new];
[parsingFormatter setDateFormat:#"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"];
NSDate *date = [parsingFormatter dateFromString:"2016-04-01T05:00:00+08:00"];
NSTimeInterval startTime = [date timeIntervalSince1970];
But in the above example startTime returns nil. Can someone tell me what I am doing wrong? How can I convert it?
Try this
NSDateFormatter *parsingFormatter = [NSDateFormatter new];
[parsingFormatter setDateFormat:#"yyyy-MM-dd'T'HH:mm:ssZZZ"];
NSDate *date = [parsingFormatter dateFromString:#"2016-04-01T05:00:00+08:00"];
NSTimeInterval startTime = [date timeIntervalSince1970];
I am getting date "2016-03-31 21:00:00 +0000" UTC format.
I am getting timestamp for server in stringFormat which is in miliseconds.
I have to convert it in date and time and display to the user.
I have done it using following code:
+ (NSString *)getDateAndMonthFromTimeStamp:(NSString*)timestampString
{
NSTimeInterval timeStamp = [timestampString integerValue]/1000;
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeStamp];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc]init];
[dateFormatter setTimeZone:[NSTimeZone defaultTimeZone]];
[dateFormatter setDateFormat:#"dd MMM"];
NSString *dateNmonth = [[dateFormatter stringFromDate:date]uppercaseString];
return dateNmonth;
}
When I run it in iPhone6 it works fine. But when I run it in iPhone 5 and iPhone5s it shows me unwanted date.
I debug the code and found this:
timestampString = #"1459498716000"
NSTimeInterval timeStamp = [timestampString integerValue]/1000;
//after this timeStamp becomes:
timeStamp = 2147483;
and then my date becomes 1970-01-25 20:31:23 +0000
I am in doubt that NSTimeinterval is overflowed with data. is this right?
How can I fix this.
try this code
NSString* takeOffTime = #"1396614600000";
double miliSec = takeOffTime.doubleValue;
NSDate* takeOffDate = [NSDate dateWithTimeIntervalSince1970:miliSec/1000];
How do I convert 2011-05-08T22:08:38Z to a relative time format in Objective C?
// create a date formatter
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
// set the formatter to parse RFC 3339 dates
[formatter setDateFormat:#"yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'"];
// the formatter parses your date into an NSDate instance
NSDate *date = [formatter dateFromString:#"2011-05-08T22:08:38Z"];
// now to get relative information you can do things like this, which
// will give you the number of seconds since now
NSTimeInterval secondsFromNow = [date timeIntervalSinceNow];
// or this, which will give you the time interval between this data
// and another date
NSTimeInterval secondsFromOther = [date timeIntervalSinceDate:someOtherDateInstance];