NSDateFormatter dateFromString为“ 2015-11-20 13：42：00.000000”返回nil

Question

I know there are many similar questions but I can't figure out my problem.

I want to convert a String like "2015-11-20 13:42:00.000000" to NSDate.

My code is like below.

let date:String
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ssZ"
if let value = row["date"]?.asString() {
    date = value
    let formattedDate = dateFormatter.dateFromString(date) // formattedDate is nil
}

Answer 1

You need to update your dateFormat with following

dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSSSSS"

As uppercase S represents fraction of second.

More detail about DateTime Format table is available here

Answer 2

Please secure your code by saving ponies !

let date = "2015-11-20 13:42:00.000000"
let dateFormatter = NSDateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSSSSS"
if let fornmattedDate = dateFormatter.dateFromString(date) as NSDate {
print ("The formated date is \(fornmattedDate)")
} else {
     print ("\(date) is not a valid date")
} 

Answer 3

Try like this :-

    let date = "2015-11-20 13:42:00.000000"
    let dateFormatter = NSDateFormatter()
    dateFormatter.dateFormat = "yyyy-MM-dd HH:mm:ss.SSSSSS"
    let fornmattedDate = dateFormatter.dateFromString(date) as NSDate!
    print ("The formated date is \(fornmattedDate)")

Output:- The formated date is 2015-11-20 21:42:00 +0000