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 UITextField
) into a usable NSData
object.
I've seen this method for going the other way:
NSString(data data: NSData!, encoding encoding: UInt)
But I can't seem to find any documentation for my use case. I'm open to putting the string into some other type if necessary, but none of the initialization options for NSData
using Swift seem to be what I'm looking for.
This question is related to
xcode
nsstring
nsdata
swift
nsmutableurlrequest
Creating Data
object from String
object has been changed in Swift 3. Correct version now is:
let data = "any string".data(using: .utf8)
Swift 4
let data = myStringVariable.data(using: String.Encoding.utf8.rawValue)
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)
}
}
Swift 4.2
let data = yourString.data(using: .utf8, allowLossyConversion: true)
// 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)!
In swift 5
let data = Data(YourString.utf8)
Here very simple method
let data = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
To create not optional data I recommend using it:
let key = "1234567"
let keyData = Data(key.utf8)
Source: Stackoverflow.com