How to parse json in swift (convert json string to string) - ios

Question

I don't find a way to parse a simple json object into a string object in swift. I have a network request which gives me this json response:
"\"asdf\""
When I try to parse this into a string in swift it looks like this:
"\"asdf\""
according this documentation from apple I should only need to do this:
Apple Swift documentation
let jsonValue = responseData as? String
But that does not work for me.
I need just asdf as string value.
Can anyone help me out?
Thanks in advance.
EDIT:
Here is my network request code:
let stringUrl = "https://test.fangkarte.de/v1.3/test"
let url = URL(string: stringUrl)!
let request = URLRequest(url: url)
let session = URLSession(configuration: URLSessionConfiguration.default)
let task = session.dataTask(with: request, completionHandler: {(data, response, error) -> Void in
if let data = data {
let json = String(data: data, encoding: String.Encoding.utf8)
let response = response as! HTTPURLResponse
if 200...299 ~= response.statusCode {
callback(true, response.statusCode, json!)
} else {
callback(false, response.statusCode, json!)
}
}
})
task.resume()
The value of the variable json is "\"testString\"" and not "testString"

Answer 1

You could try something like:
func parseJSON(_ data: Data) -> [String: Any]? {
do {
if let json = try JSONSerialization.jsonObject(with: data) as? [String: Any],
let body = json["data"] as? [String: Any] {
return body
}
} catch {
print("Error deserializing JSON: \n\(error)")
return nil
}
return nil
}
To use:
let data = <variable holding JSON>.data(using: .utf8)
let jsonResult = parseJSON(data)

Answer 2

You get a json string so you can try
let jsonstring = "\"asdf\""
let data = jsonstring.data(using: .utf8)
do {
if let str = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as? String {
print(str)
}
}
catch let caught as NSError
{
}