转换日期字符串swift

Question

我有这种格式的日期字符串:

2016-06-20T13:01:46.457+02:00

我需要把它改成这样的东西:

20/06/2016

以前我一直使用这个库 - > SwiftDate来操作日期,但它现在不起作用.

我也尝试过类似的东西:

let myDate = self.dateNoteDict[indexPath.row]!
    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd hh:mm:ss.SSSSxxx"
    let date = dateFormatter.dateFromString(myDate)
    print("date -> \(date)")

但它不起作用.我能怎么做？

提前致谢.

Answer 1

具有小数秒和时区的标准ISO8601日期格式为

YYYY-MM-dd'T'HH:MM:ss.SSSZ

let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = NSDateFormatter()
dateFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.dateFromString(myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.stringFromDate(date)

斯威夫特3:

let myDate = "2016-06-20T13:01:46.457+02:00"
let dateFormatter = DateFormatter()
dateFormatter.locale = Locale(identifier: "en_US_POSIX") // edited
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
let date = dateFormatter.date(from:myDate)!
dateFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)

在macOS 10.13+中,iOS 11+ ISO8601DateFormatter是输入格式化程序的替代品

let myDate = "2016-06-20T13:01:46.457+02:00"
let inputFormatter = ISO8601DateFormatter()
inputFormatter.formatOptions = [.withFullDate, .withFullTime, .withFractionalSeconds]
let date = dateFormatter.date(from:myDate)!
let outputFormatter = DateFormatter()
outputFormatter.locale = Locale(identifier: "en_US_POSIX")
outputFormatter.dateFormat = "dd/MM/yyyy"
let dateString = dateFormatter.string(from:date)