I have a date "2017-12-31" as a String.
What I want to get finally is only the month: "12" as a String.
So I thought that I can change it to Date using a date formatter
let formatter = DateFormatter()
formatter.dateFormat = "MM"
What do I do next?
let dateString = "2017-12-31"
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: Calendar.Identifier.iso8601) formatter.timeZone = TimeZone(identifier: TimeZone.autoupdatingCurrent.identifier)
formatter.dateFormat = "yyyy-MM-dd"
let localDate = formatter.date(from: dateString)
formatter.dateFormat = "MM"
let strMonth = formatter.string(from: localDate!)
print("Month is:",strMonth)
Another way
let dateString = "2017-12-31"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
let localDate = formatter.date(from: dateString)
let month = String(NSCalendar.current.component(.month, from: localDate!))
print(month)
First you have to use the DateFormatter to create a temporary Date object from your source String object. Then you have to use it to create your final String from the temporary Date object.
let dateString = "2017-12-31"
let dateFormatter = DateFormatter()
// set the dateFormatter's dateFormat to the dateString's format
dateFormatter.dateFormat = "yyyy-MM-dd"
// create date object
guard let tempDate = dateFormatter.date(from: dateString) else {
fatalError("wrong dateFormat")
}
// set the dateFormatter's dateFormat to the output format you wish to receive
dateFormatter.dateFormat = "LL" // LL is the stand-alone month
let month = dateFormatter.string(from: tempDate)
Use below function for getting month from string file of date
func getMonthFromDateString(strDate: String) -> String {
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd"
let date = formatter.date(from: strDate) // Convert String File To Date
formatter.dateFormat = "MM"
let strMM = formatter.string(from: date!) // Convert date to string
return strMM
}
Related
I get a crash when running and it points at the dateFormmater.timezone.
The error in the console is:
Could not cast value of type 'Swift.Optional' (0x1192bf4a8) to 'NSTimeZone' (0x1192c0270).
the value of rowEvents.date is "1480134638.0"
Im trying to pull out a Unix timestamp from Firebase saved as a string. Convert it to Date and again save it as a string so I can post it on a cell label.
I got this code from StackOverflow. I plugged in my data and everything is all good until I run it. I guess everything is not all good...
if let lastUpdated : String = rowEvents.date {
let epocTime = TimeInterval(lastUpdated)! / 1000 // convert it from milliseconds dividing it by 1000
let unixTimestamp = NSDate(timeIntervalSince1970: epocTime) //convert unix timestamp to Date
let dateFormatter = DateFormatter()
dateFormatter.timeZone = NSTimeZone() as TimeZone!
dateFormatter.locale = NSLocale.current // NSLocale(localeIdentifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZZZZZ"
dateFormatter.date(from: String(describing: unixTimestamp))
let updatedTimeStamp = unixTimestamp
let cellDate = DateFormatter.localizedString(from: updatedTimeStamp as Date, dateStyle: DateFormatter.Style.full, timeStyle: DateFormatter.Style.medium)
cell.subtitleLabel.text = cellDate
}
The result came from this code here:
let myTimeStamp = self.datePicker?.date.timeIntervalSince1970
let calendarDate = String(describing: myTimeStamp! /** 1000*/)
You can convert unixTimestamp to date using Date(timeIntervalSince1970:).
let unixTimestamp = 1480134638.0
let date = Date(timeIntervalSince1970: unixTimestamp)
If you want to display date in string with specific formate than you can use DateFormatter like this way.
let date = Date(timeIntervalSince1970: unixtimeInterval)
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone(abbreviation: "GMT") //Set timezone that you want
dateFormatter.locale = NSLocale.current
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm" //Specify your format that you want
let strDate = dateFormatter.string(from: date)
The problem is the line dateFormatter.timeZone = NSTimeZone() as TimeZone!.
Simply use TimeZone instead of NSTimeZone like
dateFormatter.timeZone = TimeZone.current and your code will work.
You might also remove your / 1000 because 1480134638.0 looks more like seconds than milliseconds (since 1970).
Swift 4.1. I created a function. Just pass you timeStamp in function param and function will return data in string data type. You can add more properties to DateFormatter object.
func getDateFromTimeStamp(timeStamp : Double) -> String {
let date = NSDate(timeIntervalSince1970: timeStamp / 1000)
let dayTimePeriodFormatter = DateFormatter()
dayTimePeriodFormatter.dateFormat = "dd MMM YY, hh:mm a"
// UnComment below to get only time
// dayTimePeriodFormatter.dateFormat = "hh:mm a"
let dateString = dayTimePeriodFormatter.string(from: date as Date)
return dateString
}
Using playground all I did was this.
let epochTime = 1547855446
let newTime = Date(timeIntervalSince1970: TimeInterval(epochTime))
print(newTime)
Returns this - 2019-01-18 23:50:46 +0000
extension Double{
func convertDate(formate: String) -> String {
let date = (timeIntervalSince1970: self)
let dateFormatter = DateFormatter()
dateFormatter.timeZone = TimeZone.current
dateFormatter.locale = NSLocale(localeIdentifier: "(your localization language)" ) as Locale //localization language
dateFormatter.dateFormat = formate //Specify your format that you want let
strDate = dateFormatter.string(from: date)
return strDate
}
}
//usage
let timeStamp:Double = Double(1595407043)
print(timeStamp.convertDate(formate: "EEEE dd/MM/YYY"))
This solution is valid for swift 3 -> 4.2 :
you can add an extension on the Double that returns the date formatted:
extension Double {
// returns the date formatted.
var dateFormatted : String? {
let date = Date(timeIntervalSince1970: self)
let dateFormatter = DateFormatter()
dateFormatter.timeStyle = DateFormatter.Style.none //Set time style
dateFormatter.dateStyle = DateFormatter.Style.short //Set date style
return dateFormatter.string(from: date)
}
// returns the date formatted according to the format string provided.
func dateFormatted(withFormat format : String) -> String{
let date = Date(timeIntervalSince1970: self)
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = format
return dateFormatter.string(from: date)
}
}
example on the above :
let timeStamp = 82749029.0
print(timeStamp. dateFormatted)
//output
//12/11/1994
let timeStamp = 82749029.0
print(timeStamp. dateFormatted(withFormat : "MM-dd-yyyy HH:mm"))
//output
//12-11-1994 13:04
I'm trying to get the current date. Current Date and time is 2019-12-16 05:12:59 but I get 2019-12-16 10:12:59.
let dateAdded = itemDict["time"] as! String
let df = DateFormatter()
df.dateFormat = "yyyy-MM-dd hh:mm:ss"
let currentTime = df.date(from: dateAdded)
let dateTime = currentTime!.addingTimeInterval(60.0 * 60.0)
let currentDate = Date()
Try this:
Date().toCurrentTimezone()
extension Date {
func toCurrentTimezone() -> Date {
let timeZoneDifference =
TimeInterval(TimeZone.current.secondsFromGMT())
return self.addingTimeInterval(timeZoneDifference)
}
}
To get the current time without a format you can simply just add this:
let currentDateTime = Date()
print(currentDateTime)
But if you would like to retrieve a "string" and convert it into a date you can do:
let dateAdded = itemDict["time"] as! String
//Convert string to date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
let date = dateFormatter.date(from: dateAdded!)
If you're still getting wrong time, you should add timezone. In that case the code will be something like this:
let dateAdded = itemDict["time"] as! String
//Convert string to date
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm"
dateFormatter.timeZone = TimeZone(abbreviation: "UTC")
let date = dateFormatter.date(from: dateAdded!)
If you're using uppercase "HH" that means you're using the 24h clock. Otherwise use small case "hh".
You need to set your local time zone in date formator.
//Get local time Zone
var localTimeZoneIdentifier: String { return TimeZone.current.identifier }
print("local Time zone: " + localTimeZoneIdentifier)
let inputdateString: String = "2019-12-16 05:12:59"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: localTimeZoneIdentifier)
dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss"
let inputDate = dateFormatter.date(from: inputdateString )!
print("Output date: \(String(describing: inputDate))")
out put:-
local Time zone:-Asia/Kolkata
Output date: 2019-12-15 23:42:59 +0000
I have this type of string and want to convert it to date
"2017-05-27T00:00:00.000+0400"
but none of this formatters convert it to date
"yyyy-MM-dd'T'HH:mm:SSSZ"
"yyyy-MM-dd'T'HH:mm:SSSX"
Your forgot to add ss for seconds so correct formate should be yyyy-MM-dd'T'HH:mm:ss.SSSZ
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.date(from: "2017-05-27T00:00:00.000+0400")
Your error was that the seconds were missing. So the right format should be: yyyy-MM-dd'T'HH:mm:ss.SSSZ. You can also use an extension for this purpose:
extension String {
var toCustomDate: Date {
return Date.Formatter.customDate.date(from: self)!
}
}
extension Date {
struct Formatter {
static let customDate: DateFormatter = {
let formatter = DateFormatter()
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
return formatter
}()
}
var customDate: String {
return Formatter.customDate.string(from: self)
}
}
let str = "2017-05-27T00:00:00.000+0400"
let date = str.toCustomDate
If you have more date formats, then just add them to the extensions.
you can do like this
let dateString = "2017-05-27T00:00:00.000+0400"
let formachanger = DateFormatter()
formachanger .dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
if let dateFromString = formachanger .date(from: dateString) {
formachanger .dateFormat = "yyyy-MM-dd HH:mm"
let stringFromDate = formachanger .string(from: dateFromString)
}
try this function
func getGMTDateFrom(String string : String) -> Date? {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEE, dd MMM yyyy hh:mm:ss zz"
let dateObj = dateFormatter.date(from: string)
return dateObj
}
Change date format according to your need.
I have a date format in String value of "2015-08-27" which is "YYYY-MM-DD". I need to convert this to Date format and change the format to "DD-MMM-YYYY". And change it back to String format again to display. So the end result would be "27-AUG-2015".
I have been searching for codes, but couldn't find one.
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "YYYY-MM-DD"
let date = dateFormatter.dateFromString("2015-08-27")
dateFormatter.dateFormat = "DD-MMM-YYYY"
let goodDate = dateFormatter.stringFromDate(date!)
Its not tested but I hope it will work.
You can create a class helper like DateHelper and class func:
class func convertDateString(dateString : String!, fromFormat sourceFormat : String!, toFormat desFormat : String!) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = sourceFormat
let date = dateFormatter.date(from: dateString)
dateFormatter.dateFormat = desFormat
return dateFormatter.string(from: date!)
}
And use it:(note format you give on question wrong so it will wrong convert): begin format is YYYY-MM-dd and you want convert to dd-MMM-YYYY)
print(DateHelper.convertDateString("2015-08-27", fromFormat: "YYYY-MM-dd", toFormat: "dd-MMM-YYYY"))
Hope this help.
Just used the function in your code(swift 4.2).
public func convertDateFormatter(date: String) -> String {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"//this your string date format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone!
dateFormatter.locale = Locale(identifier: "your_loc_id")
let convertedDate = dateFormatter.date(from: date)
guard dateFormatter.date(from: date) != nil else {
assert(false, "no date from string")
return ""
}
dateFormatter.dateFormat = "HH:mm a"///this is what you want to convert format
dateFormatter.timeZone = NSTimeZone(name: "UTC") as TimeZone!
let timeStamp = dateFormatter.string(from: convertedDate!)
print(timeStamp)
return timeStamp
}
Thanks
I'm getting UTC string dates that look like this "2015-10-17T00:00:00.000Z" and want to convert them to an NSDate in this format "October 12th 2015 11:19:12 am"
This is the route that I'm trying but I can't seem to get the right dateFormat.
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = //can't seem to get this right
dateFormatter.timeZone = NSTimeZone(name: "UTC")
let date = dateFormatter.dateFromString("2015-10-17T00:00:00.000Z")
I think this should work
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let localDate = formatter.date(from: date)
This works for Swift 3.0 and latest Xcode [April 2017]
let dateString = "2017-Jan-01 12:00:00.250"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-M-dd HH:mm:ss.SSS"
dateFormatter.locale = Locale.init(identifier: "en_GB")
let dateObj = dateFormatter.date(from: dateString)
let date = dateObj
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.timeZone = TimeZone(secondsFromGMT: 0)
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSSXXXXX"
let currentDateTime = formatter.string(from: date!)
Swift 4 code
let dateString = "2015-10-17T00:00:00.000Z"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = formatter.date(from: dateString)
You can find useful info about date formats here
This question is a few years old but let's answer it literally.
First of all DateFormatter doesn't provide a format specifier for an ordinal suffix so we have to write a function
func ordinalSuffix(for day : String) -> String {
switch day {
case "1", "11", "21", "31": return "st"
case "2", "12", "22": return "nd"
case "3", "13", "23": return "rd"
default: return "th"
}
}
To convert the iso8601 string to date create a DateFormatter, set its calendar to an iso8601 calendar and convert the string to Date. As the time zone is specified in the string you don't need to set it explicitly
let dateString = "2015-10-17T00:00:00.000Z"
let formatter = DateFormatter()
formatter.calendar = Calendar(identifier: .iso8601)
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
guard let date = formatter.date(from: dateString) else {
// replace that with a proper error handling
fatalError("Could not convert date string")
}
To convert the date back to string you have to set the Locale to a fixed value, set the am/pm symbols to the lowercase versions, extract the day component first for the ordinal suffix calculation and then take advantage of String(format to insert the ordinal suffix.
formatter.locale = Locale(identifier: "en_US_POSIX")
formatter.amSymbol = "am"
formatter.pmSymbol = "pm"
formatter.dateFormat = "dd"
let day = formatter.string(from: date)
formatter.dateFormat = "MMMM dd'%#' yyyy h:mm:ss a"
let output = String(format: formatter.string(from: date), ordinalSuffix(for: day))
print(output)