JSON Dictionary to String?

Question

Is there a solution in Swift to have the value of these 2 key/value pairs in String ?

"ignoredentities":{"actualite":[68533]},
"lastentities":{"actualite":{"uid":3942,"starttime":1504850580},"video":{"uid":4392,"starttime":1504956600}},"count":25}

I want to have 2 String like :

let ignoredentities = "{"actualite":[68533]}"

let lastentities = "{"actualite":
{"uid":3942,
  "starttime":1504850580
},"video":
{"uid":4392,
  "starttime":1504956600
}
},"count":25}"

`(NS)JSONSerialization` can transform `(NS)Data` into `(NS)Array`/`(NS)Dictionary` and vice-versa. `(NS)Data` can be transform into `(NS)String` (UTF8) and vice-versa. So yes, it's possible, just look for each transformation one by one on SO. — Larme, Sep 14 '17 at 09:03
Where is that JSON coming from and in what type is it stored? Have you already parsed it to a Dictionary? — Dávid Pásztor, Sep 14 '17 at 09:04
@DávidPásztor yes it comes from a Dictionary, I tried String(describing: pagination["lastentities"]) but I got "Optional(<__NSArrayM 0x7c089d40>(\n\n)\n)" — Valentin Garcia, Sep 14 '17 at 09:08
Possible duplicate of [Convert Dictionary to JSON in Swift](https://stackoverflow.com/questions/29625133/convert-dictionary-to-json-in-swift) — cpt. Sparrow, Sep 14 '17 at 09:19
@ValentinGarcia so you actually want to store the JSON as a String with all the `{` and `[` symbols instead of properly parsing the JSON and storing it's values such as `actualite = 68533`? — Dávid Pásztor, Sep 14 '17 at 09:23
@DávidPásztor exactly, I want a String that equals `" {"actualite" : [68533]} "` — Valentin Garcia, Sep 14 '17 at 09:35

score 1 · Answer 1 · answered Sep 14 '17 at 09:03

1

Try below code

let jsonData = try JSONSerialization.data(withJSONObject: reqDict, options: .prettyPrinted)
                let reqJSONStr = String(data: jsonData, encoding: .utf8)

answered Sep 14 '17 at 09:03