Convert string to date in Swift

Question

How can I convert this string "2016-04-14T10:44:00+0000" into an NSDate and keep only the year, month, day, hour?

The T in the middle of it really throws off what I am used to when working with dates.

Answer 1

• 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 12:

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

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