How to Convert String to Date to String in Swift iOS

Convert string to date in Swift

• Convert the ISO8601 string to date

    let isoDate = "2016-04-14T10:44:00+0000"
  
    let dateFormatter = DateFormatter()
    dateFormatter.locale = Locale(identifier: "en_US_POSIX") // set locale to reliable US_POSIX
    dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
    let date = dateFormatter.date(from:isoDate)!
  

• Get the date components for year, month, day and hour from the date

    let calendar = Calendar.current
    let components = calendar.dateComponents([.year, .month, .day, .hour], from: date)
  

• Finally create a new Date object and strip minutes and seconds

    let finalDate = calendar.date(from:components)
  

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Consider also the convenience formatter ISO8601DateFormatter introduced in iOS 10 / macOS 10.12:

let isoDate = "2016-04-14T10:44:00+0000"

let dateFormatter = ISO8601DateFormatter()
let date = dateFormatter.date(from:isoDate)!

How to convert string to date to string in Swift iOS?]

First, you need to convert your string to NSDate with its format. Then, you change the dateFormatter to your simple format and convert it back to a String.

Swift 3

let dateString = "Thu, 22 Oct 2015 07:45:17 +0000"
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "EEE, dd MMM yyyy hh:mm:ss +zzzz"
dateFormatter.locale = Locale.init(identifier: "en_GB")

let dateObj = dateFormatter.date(from: dateString)

dateFormatter.dateFormat = "MM-dd-yyyy"
print("Dateobj: \(dateFormatter.string(from: dateObj!))")

The printed result is: Dateobj: 10-22-2015

Date to String [format string] String to Date in Swift

This should fix your issue

func convertStartDate(StartDate: Date) -> Date {

    let dateFormatter = DateFormatter()
    dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
    dateFormatter.dateFormat = "yyy-MM-dd '00':'00':'01' +0000"
    let dateString = dateFormatter.string(from: StartDate)
    dateFormatter.dateFormat = "yyy-MM-dd HH:mm:ss +0000"
    let date = dateFormatter.date(from: dateString)
    print(date as Any)

    return date!
}

func convertEndDate(EndDate: Date) -> Date {

    let dateFormatter = DateFormatter()
    dateFormatter.timeZone = TimeZone(secondsFromGMT: 0)
    dateFormatter.dateFormat = "yyy-MM-dd '23':'59':'59' +0000"
    let dateString = dateFormatter.string(from: EndDate)
    dateFormatter.dateFormat = "yyy-MM-dd HH:mm:ss +0000"
    let date = dateFormatter.date(from: dateString)

    return date!
}

Converting a String to a Date in Swift]

The date format needs to be for the string you are trying to convert, not the format you want back

so

formatter.dateFormat = "dd MM YYYY"

should be

formatter.dateFormat = "E, d MMM yyyy HH:mm:ss Z"

How to convert string to date without change time swift

You can add a timezone to dateFormatter

dateFromat.timeZone = TimeZone(secondsFromGMT: 0)

Updated code:

let scheduleDate : String = "2020-01-25 20:11:00"
let dateFromat : DateFormatter = DateFormatter()
dateFromat.dateFormat = "yyyy-MM-dd HH:mm:ss"
dateFromat.timeZone = TimeZone.init(secondsFromGMT: 0)
let dateFromString = dateFromat.date(from: scheduleDate)
print(dateFromString as Any) 

How to convert string date time format to another format using Swift

extension String {
func convertToDateFormate(current: String, convertTo: String) -> String {
    let dateFormatter = DateFormatter()
    dateFormatter.dateFormat = current
    guard let date = dateFormatter.date(from: self) else {
        return self
    }
    dateFormatter.dateFormat = convertTo
    return  dateFormatter.string(from: date)
}
}

convert to required formate as

let dateString = "12-10-2019"
let convertedDate = dateString.convertToDateFormate(current: "dd-MM-YYYY", convertTo: "YYYY-MM-dd")

How can I convert string date to NSDate?

try this:

let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = /* find out and place date format from 
                            * http://userguide.icu-project.org/formatparse/datetime
                            */
let date = dateFormatter.dateFromString(/* your_date_string */)

For further query, check NSDateFormatter and DateFormatter classes of Foundation framework for Objective-C and Swift, respectively.

Swift 3 and later (Swift 4 included)

let dateFormatter = DateFormatter()
dateFormatter.dateFormat = /* date_format_you_want_in_string from
                            * http://userguide.icu-project.org/formatparse/datetime
                            */
guard let date = dateFormatter.date(from: /* your_date_string */) else {
   fatalError("ERROR: Date conversion failed due to mismatched format.")
}

// use date constant here

How to convert String to Date to String in Swift?

You are trying to convert string(from: string which is not possible.

You have first to convert the string to date with the format yyyy-MM-dd and then change the format and convert it back to string.

let dateString = "2019-03-22"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX")
dateFormatter.dateFormat = "yyyy-MM-dd"
let date = dateFormatter.date(from: dateString)!
dateFormatter.dateFormat = "MMMM dd, yyyy"
let newDate = dateFormatter.string(from:date)
print(newDate)

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