Sending JSON Data with Swift - json

Question

I'm building a chat app and I understand how to receive the data back but I'm having trouble sending the data. I'm trying to take two UITextField values which are the username and the message and send the data.
Variables
#IBOutlet weak var username: UITextField!
#IBOutlet weak var textBox: UITextField!
Request To Receive
#IBAction func sendMessage(_ sender: UIButton) {
let parameters = ["user": username.text, "message": textBox.text] as! [String: String]
//create the url with NSURL
let url = NSURL(string: "http://website.com/getChatLogJSON.php")
//create the session object
let session = URLSession.shared
//now create the NSMutableRequest object using the url object
let request = NSMutableURLRequest(url: url! as URL)
request.httpMethod = "POST" //set http method as POST
do {
request.httpBody = try JSONSerialization.data(withJSONObject: parameters, options: .prettyPrinted) // pass dictionary to nsdata object and set it as request body
} catch let error {
print(error.localizedDescription)
}
//HTTP Headers
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "Accept")
//create dataTask using the session object to send data to the server
let task = session.dataTask(with: request as URLRequest, completionHandler: { data, response, error in
guard error == nil else {
return
}
guard let data = data else {
return
}
do {
//create json object from data
if let json = try JSONSerialization.jsonObject(with: data, options: .mutableContainers) as? [String: AnyObject] {
print(json)
// handle json...
}
} catch let error {
print(error.localizedDescription)
}
})
task.resume()
}

Answer 1

Checkout SwiftyJSON, its a neat library for your JSON needs.
data insertion into the JSON object becomes as simple as:
json["name"] = JSON("new-name")
json[0] = JSON(1)
json["id"].int = 1234567890
json["coordinate"].double = 8766.766
json["name"].string = "Jack"
json.arrayObject = [1,2,3,4]
json.dictionaryObject = ["name":"Jack", "age":25]
Here is the github page, all instructions are there https://github.com/SwiftyJSON/SwiftyJSON
When it contains all data you need to put in, you can return the raw json in a string if you wish and send that which can be parsed
//convert the JSON to a raw String
if let rawString = json.rawString() {
//Do something you want
} else {
print("json.rawString is nil")
}