ios - 如何将字符串日期转换为 NSDate？

Question

我想将 2016-03-09 00:00:00 转换为 09/03/2016

我正在尝试下面的代码但打印nil 值

var date: [String] = ["2016-03-09 00:00:00", "2016-03-20 00:00:00"]

for i in date {
    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "dd/MM/YYYY"
    let showDate = dateFormatter.dateFromString(i)
    print(showDate)
}

上面的代码打印nil
请帮助我如何快速打印日期 dd/MM/YYYY 格式

Answer 1

我认为您的日期格式有误。将“dd/MM/YYYY”更改为“YYYY-MM-dd HH:mm:s”并尝试...

You have a date like "2016-03-09 00:00:00" .. so format should be "YYYY-MM-dd HH:mm:s"

for i in date {
  let dateFormatter = NSDateFormatter()
  dateFormatter.dateFormat = "YYYY-MM-dd HH:mm:s"
  if let showDate = dateFormatter.dateFromString(i){
     print("Date with Time: \(showDate)")
     dateFormatter.dateFormat = "YYYY-MM-dd"
     let resultString         = dateFormatter.stringFromDate(showDate)
     print("final result: \(resultString)")  
  }
}  

结果:-

Date with Time: 2016-03-09 00:00:00 +0000
final result: 2016-03-09 
Date with Time: 2016-03-20 00:00:00 +0000
final result: 2016-03-20