相关疑难解决方法(0)

我试图将a转换NSDate为a String然后更改格式.但是当我传递NSDate给String它时会产生空白.

 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)