I'm trying to do something very simple here and failing miserably. I just want to convert a string with a complete date into just the hours and minutes, can anyone see where I am going wrong? The following code prints nil
let dateString2 = "2018-03-11 20:43:05 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss +zzzz"
dateFormatter.locale = Locale.init(identifier: "en_GB")
let dateObj = dateFormatter.date(from: dateString2)
dateFormatter.dateFormat = "hh:mm"
print("Dateobj: \(dateFormatter.string(from: dateObj!))")
Your dateFormat String is flawed. hh is the 12hour time format, when you clearly receive a 24h time format, for which you need to use HH. Even though zzzz works, +0000 should actually be represented by z. When working with fixed time formats in most cases you should also set the locale to en_US_POSIX.
let dateString2 = "2018-03-11 20:43:05 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss z"
dateFormatter.locale = Locale.init(identifier: "en_US_POSIX")
let dateObj = dateFormatter.date(from: dateString2)
dateFormatter.dateFormat = "HH:mm"
print("Dateobj: \(dateFormatter.string(from: dateObj!))")
Output:
20:43
You need HH (24-hour) for the hour, not hh (12-hour). You also need to use the special locale of en_US_POSIX, not en_GB. You should also use Z for the timezone, not +zzzz.
let dateString2 = "2018-03-11 20:43:05 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss Z"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
if let dateObj = dateFormatter.date(from: dateString2) {
dateFormatter.dateFormat = "HH:mm" // or "hh:mm a"
print("Dateobj: \(dateFormatter.string(from: dateObj))")
}
Related
In my app I am getting date string from server like that "2019-12-30 21:25:06" so I am using the formatter like "yyyy-MM-dd HH:mm:ss", Then I want to change the date for mat to "Dec 30, 2019" so I change the format to "MMM dd, yyyy" but it doesn't work.
Here I using "https://nsdateformatter.com/" and using the formatter "yyyy-MM-dd HH:mm:ss" means the date will changed from "2019-12-30 21:25:06" to "2019-12-30 15:55:06", I can't find the reason.
Here I mention my code for date formatter.
let createdDateString:String = "2019-12-30 21:25:06"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss"
let dateOrder = dateFormatter.date(from: createdDateString)
dateFormatter.dateFormat = "MMM dd, yyyy"
let orderDateStr:String = dateFormatter.string(from: dateOrder!)
dateLbl.text = orderDateStr
I have a function to convert string to date format. This function works as expected on iOS 12 but on iOS 13. I get this error:
"Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value"
Here is my code:
func ConvertDateAndTimeFormat2() {
let timeDate = "2019-09-24 15:00:00 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss +zzzz"
dateFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
var dateObj:Date!
dateObj = dateFormatter.date(from: timeDate)
dateFormatter.dateFormat = "EEEE, MMM d, yyyy"
dateFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
let timeFormatter = DateFormatter()
timeFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss +zzzz"
timeFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
var timeObj:Date!
timeObj = timeFormatter.date(from: timeDate)
timeFormatter.dateFormat = "HH:mm"
timeFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00")
let timef = "\(timeFormatter.string(from: timeObj!))"
let Date = "\(dateFormatter.string(from: dateObj!))"
}
Please change your dateformat and use "yyyy-MM-dd HH:mm:ss Z" and try.
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss Z"
For more details please visit https://nsdateformatter.com/
If you are trying to convert string time which in 24 hours format (Ex 15:25:00 / HH:mm:ss) then enable your device 24-Hour Time option. It might solve the issue in IOS 13.3
You may find the option here
Settings -> General -> Date & Time
There are many issues with your code. There is no reason to create two Date objects from one string. Just parse the original string once. Then you can create your date string and time string with the desired formats from that one date.
You should also use the special locale of en_US_POSIX when parsing fixed format date strings. There is also no need to set a timezone when parsing the original date string. The string provides its own timezone. The +0000 means it is UTC time.
You may not want to provide a timezone when converting the date to your final strings either. Most likely you want strings in the user's locale timezone, not some hardcoded timezone.
Here's your code cleaned up a lot:
func convertDateAndTimeFormat2() {
let timeDate = "2019-09-24 15:00:00 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss Z"
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
if let dateObj = dateFormatter.date(from: timeDate) {
dateFormatter.dateFormat = "EEEE, MMM d, yyyy"
dateFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00") // Probably not needed
let timeFormatter = DateFormatter()
timeFormatter.dateFormat = "HH:mm"
timeFormatter.timeZone = TimeZone(abbreviation: "GMT+3:00") // Probably not needed
let timef = timeFormatter.string(from: dateObj)
let datef = dateFormatter.string(from: dateObj)
print("Date: \(datef), time: \(timef)")
}
}
convertDateAndTimeFormat2()
Output:
Date: Tuesday, Sep 24, 2019, time: 18:00
I have a ISO 8061 format timestamp string "2018-06-13T12:11:13+05:00", what is the correct way to create Date object out from the String?
I tried:
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
let myDate = formatter.date(from: "2018-06-13T12:11:13+05:00")
But it doesn't work correctly, myDate is one hour behind. What is the format string I should use for this kind of timestamp?
For ISO 8601 time zone format
use ZZZZZ in capital
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
EDIT
Check the following example
I have just changed +05:30 from 05:00
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
formatter.timeZone = TimeZone(identifier: "UTC")
let myDate = formatter.date(from: "2018-06-13T12:11:13+05:30")
formatter.dateFormat = "yyyy-MM-dd HH:mm"
formatter.timeZone = TimeZone.current
print(formatter.string(from: myDate!))
Output
2018-06-13 12:11
I have a issue with getting the correct date in the following case
let dateString = "May 2, 2018 at 3:31 PM"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMM dd, yyyy 'at' HH:mm a"
dateFormatter.timeZone = TimeZone(identifier: "UTC")
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
let date = dateFormatter.date(from: dateString)!
I am getting "May 2, 2018 at 8:31 AM" as the date, which is wrong
When the same date is used with a different dateformatting string i get the correct date
let dateFormatter3 = DateFormatter()
dateFormatter3.dateFormat = "yyyy-MM-dd'T'HH:mm:ss"
dateFormatter3.locale = Locale(identifier: "en_US_POSIX")
dateFormatter3.timeZone = TimeZone(identifier: "UTC")
let date3 = dateFormatter3.date(from: "2018-05-02T15:31:00")!
Date returned is "May 2, 2018 at 11:31 AM" which is correct.
I like to know what i am doing wrong in the first code block? Or is this a bug in the date formatter class ?
when hour is in am/pm(1~12) use hh, to hour in day(0~23) use HH.
This helps me format my dates:
I hope this would work for you:
let dateString = "May 2, 2018 at 3:31 PM"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "MMM dd, yyyy 'at' hh:mm a"
dateFormatter.timeZone = TimeZone(identifier: "UTC")
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
let date = dateFormatter.date(from: dateString)
print(date!)
Output:-
I have checked other questions but none of them helped me much.
I have following string:
let dateString = "2018-04-29T21:00:00.000Z"
I have successfully converted it to date using the following:
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let convertedDate = dateFormatter.date(from: dateString)
But now I only want the time "hh:mm a" using timezone such as "+8". I have tried following way but it's not working:
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone(abbreviation: "UTC+8")
dateFormatter.dateFormat = "hh:mm a"
let requiredTime = dateFormatter.string(from: convertedDate!)
Can anyone help me to overcome this problem?
The format you want is hh:mm a Z, which will provide the +0800.
You want to create a TimeZone which +8 hours from GMT, normally I prefer to use the appropriate abrivations (ie AET), but I guess if you don't have that, you can create a TimeZone using secondsFromGMT, for example...
let tz = TimeZone(secondsFromGMT: 8 * 60 * 60)
let toFormatter = DateFormatter()
toFormatter.timeZone = tz
toFormatter.dateFormat = "hh:mm a Z"
let requiredTime = toFormatter.string(from: convertedDate!)
Which based on your example data, will produce a value of...
05:00 AM +0800