Convert NSDate to String in iOS Swift

Question

I am trying to convert a NSDate to a String and then Change Format  But when I pass NSDate to String it is producing whitespace    let formatter   DateFormatter    let myString    String describing  date    formatter dateFormat    yyyy-MM-dd HH mm ss   let yourDate  Date    formatter date from  myString   formatter dateFormat    dd-MMM-yyyy   print yourDate

User · Accepted Answer

you get the detail information from Apple Dateformatter Document.If you want to set the dateformat for your dateString, see this link , the detail dateformat you can get here for e.g , do like

let formatter = DateFormatter()
// initially set the format based on your datepicker date / server String
formatter.dateFormat = "yyyy-MM-dd HH:mm:ss"

let myString = formatter.string(from: Date()) // string purpose I add here 
// convert your string to date
let yourDate = formatter.date(from: myString)
//then again set the date format whhich type of output you need
formatter.dateFormat = "dd-MMM-yyyy"
// again convert your date to string
let myStringafd = formatter.string(from: yourDate!)

print(myStringafd)

you get the output as

User · Answer

You can use this extension   extension Date        func toString withFormat format  String  - gt  String           let formatter   DateFormatter           formatter dateFormat   format         let myString   formatter string from  self          let yourDate   formatter date from  myString          formatter dateFormat   format          return formatter string from  yourDate             And use it in your view controller like this  replace  lt  yyyy   with your format    yourString   yourDate toString withFormat   yyyy

User · Answer

DateFormatter has some factory date styles for those too lazy to tinker with formatting strings  If you don t need a custom style  here s another option   extension Date       func asString style  DateFormatter Style  - gt  String       let dateFormatter   DateFormatter       dateFormatter dateStyle   style     return dateFormatter string from  self          This gives you the following styles   short  medium  long  full   Example usage   let myDate   Date   myDate asString style   full       Wednesday  January 10  2018 myDate asString style   long       January 10  2018 myDate asString style   medium     Jan 10  2018 myDate asString style   short      1 10 18

User · Answer

Something to keep in mind when creating formatters is to try to reuse the same instance if you can  as formatters are fairly computationally expensive to create  The following is a pattern I frequently use for apps where I can share the same formatter app-wide  adapted from NSHipster   extension DateFormatter        static var sharedDateFormatter  DateFormatter             let dateFormatter   DateFormatter                 Add your formatter configuration here              dateFormatter dateFormat    yyyy-MM-dd HH mm ss          return dateFormatter             Usage   let dateString   DateFormatter sharedDateFormatter string from  Date

User · Answer

I always use this code while converting Date to String     Swift 3   extension Date       func toString  dateFormat format    String   - gt  String               let dateFormatter   DateFormatter           dateFormatter dateFormat   format         return dateFormatter string from  self             and call like this       let today   Date   today toString dateFormat   dd-MM

User · Answer

Your updated code update it   let formatter   DateFormatter   formatter dateFormat    yyyy-MM-dd HH mm ss  let myString   formatter string from  date as Date  let yourDate  Date    formatter date from  myString  formatter dateFormat    dd-MMM-yyyy  print yourDate

User · Answer

After allocating DateFormatter you need to give the formatted string  then you can convert as string like this way   var date   Date   let formatter   DateFormatter   formatter dateFormat    yyyy-MM-dd HH mm ss  let myString   formatter string from  date  let yourDate  Date    formatter date from  myString  formatter dateFormat    dd-MMM-yyyy  let updatedString   formatter string from  yourDate   print updatedString    OutPut  01-Mar-2017

[ios] Convert NSDate to String in iOS Swift

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