xcode swift AnyObject转换为Swift

Question

    let dataJSON = response .dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
    let decodedJson = NSJSONSerialization.JSONObjectWithData(dataJSON!, options: nil, error: nil) as NSDictionary
    println(decodedJson["UserId"])

    let BlockedValue = decodedJson["UserId"] as NSString
    NSLog("USER ID : %@",BlockedValue)

This code not work when i build code part;

First println work output : Optional(1269) But second NSLog not work

How can i convert AnyObject to String i research on google this topic i found some code part but these are not work

I found this one is not worked

if let receiver = decodedJson["UserId"] as? NSString {

    self.receiver = receiver
}

Any idea help please ?

Answer 1

It seems that decodedJson["UserId"] is an optional number.

One way to do it (you have to be sure decodedJson["UserId"] isnt' nil):

let number = decodedJson["UserId"]
if number != nil {
    let string = "\(number!)"
}

Or in condensed state:

if let number = decodedJson["UserId"] {
   let string = "\(number)"
}