Creating NSData from NSString in Swift

Question

I\'m trying to ultimately have an NSMutableURLRequest with a valid HTTPBody, but I can\'t seem to get my string data (coming from a UITextFie

Answer 1

Swift 4 & 3

Creating Data object from String object has been changed in Swift 3. Correct version now is:

let data = "any string".data(using: .utf8)

Answer 2

Swift 4

let data = myStringVariable.data(using: String.Encoding.utf8.rawValue)

Answer 3

In swift 5

let data = Data(YourString.utf8)

Answer 4

In Swift 3

let data = string.data(using: .utf8)

---

In Swift 2 (or if you already have a NSString instance)

let data = string.dataUsingEncoding(NSUTF8StringEncoding)

---

In Swift 1 (or if you have a swift String):

let data = (string as NSString).dataUsingEncoding(NSUTF8StringEncoding)

---

Also note that data is an Optional<NSData> (since the conversion might fail), so you'll need to unwrap it before using it, for instance:

if let d = data {
    println(d)
}

Answer 5

// Checking the format
var urlString: NSString = NSString(data: jsonData, encoding: NSUTF8StringEncoding)

// Convert your data and set your request's HTTPBody property
var stringData: NSString = NSString(string: "jsonRequest=\(urlString)")

var requestBodyData: NSData = stringData.dataUsingEncoding(NSUTF8StringEncoding)!

Answer 6

Convert String to Data

extension String {
    func toData() -> Data {
        return Data(self.utf8)
    }
}

Convert Data to String

extension Data {
      func toString() -> String {
          return String(decoding: self, as: UTF8.self)
      }
   }