我有这样的日期字符串: - 2016-12-20T15:26:21+11:00
将需要哪种DateFormatter
(或),以便我可以在设备的当前时区中获得时间。
输入是ISO8601,合适的解决方案是DateFormatter
。没有locale
和timeZone
的特定设置,Formatter考虑了当前的语言环境和时区。
let dateString = "2016-12-20T15:26:21+11:00"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
formatter.locale = Locale(identifier: "en_US_POSIX") // set locale to reliable US_POSIX
let date = formatter.date(from:dateString)
formatter.timeStyle = .medium
formatter.dateStyle = .none
print(formatter.string(from: date!))
您可以使用以下代码将日期字符串转换为tilit
let sourceDateString = "2016-12-20T15:26:21+11:00"
let formatter = DateFormatter()
formatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ssZ"
formatter.locale = Locale(identifier: "en-US")
formatter.timeZone = TimeZone(identifier: "UTC")
let date = formatter.date(from: sourceDateString)
print("(date)")
formatter.timeZone = NSTimeZone.local
formatter.dateFormat = "HH:mm:ss"
let strDate = formatter.string(from: date!)
print(strDate)
这是一种现代方法。您可以在操场上尝试:
let dateString = "2016-12-20T15:26:21+11:00"
// First use an ISO8601 Date formatter to turn the string into a date.
let inputFormatter = ISO8601DateFormatter()
let date = inputFormatter.date(from: dateString)! // Force unwrapping as this is a demo - you should be more careful.
// Now use a normal DateFormatter set to your current locale, turn of the date display, and use a short Time display style:
let outputFormatter = DateFormatter()
outputFormatter.locale = Locale.current
outputFormatter.dateStyle = .none
outputFormatter.timeStyle = .short
let display = outputFormatter.string(from: date)
// As I'm in the UK and the simulator local is US, I get "4:26 AM"
// Your result will be different.