In iOS swift Json Parsing How to Pass Parameters in post method

Question

Here I have Tried to Sign Up the App Using Mobile Number but I cant do in correct format,I have error in Json parsing for signup the app.

Here I give the code what i am tried,

var request = NSMutableURLRequest(URL: NSURL(string: "http://app.mycompany.in/gcm/test_slim.php/register")!, cachePolicy: NSURLRequestCachePolicy.ReloadIgnoringLocalCacheData, timeoutInterval: 5)

var response: NSURLResponse?
var error: NSError?
var reponseError: NSError?

var urlData: NSData? = NSURLConnection.sendSynchronousRequest(request, returningResponse:&response, error:&reponseError)

// create some JSON data and configure the request

let jsonString = "json=[{\"gsm_number\":\(Mobile),\"name\":\(Name),\"email\":\(Email),\"status\":\(Status),\"ver_code\":,\"profile_picture\":,\"device_id\":,\"gcm\":,\"is_register\":,\"thumb_image\":,\"user_baground_img\":}]"

request.HTTPBody = jsonString.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
request.HTTPMethod = "POST"
request.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")

// send the request
NSURLConnection.sendSynchronousRequest(request, returningResponse: &response, error: &error)

// look at the response
if let httpResponse = response as? NSHTTPURLResponse {
    println("HTTP response: \(httpResponse.statusCode)")
    println("jsonString: \(jsonString)")
    var responseData:NSString  = NSString(data:urlData!, encoding:NSUTF8StringEncoding)!

    let VerificationcodeViewController = self.storyboard?.instantiateViewControllerWithIdentifier("verificationcodeViewController") as UIViewController

    self.navigationController?.pushViewController(VerificationcodeViewController, animated: true)
} else {
    println("No HTTP response")
    var alertView:UIAlertView = UIAlertView()
    alertView.title = "Error!"
    alertView.message = "Error. & Some Problem was Found"
    alertView.delegate = self
    alertView.addButtonWithTitle("OK")
    alertView.show()
}

Can you post relevant error here?

Bannings
– Bannings

2015-05-25 11:01:32 +00:00
Commented May 25, 2015 at 11:01 — Bannings
– Bannings, Commented May 25, 2015 at 11:01
Please mention the error.

B.Saravana Kumar
– B.Saravana Kumar

2015-05-25 11:22:06 +00:00
Commented May 25, 2015 at 11:22 — B.Saravana Kumar
– B.Saravana Kumar, Commented May 25, 2015 at 11:22
syntax error was occur

B.Saravana Kumar
– B.Saravana Kumar

2015-05-25 11:22:31 +00:00
Commented May 25, 2015 at 11:22 — B.Saravana Kumar
– B.Saravana Kumar, Commented May 25, 2015 at 11:22
I made a mistake in pass parameters.

B.Saravana Kumar
– B.Saravana Kumar

2015-05-25 11:22:56 +00:00
Commented May 25, 2015 at 11:22 — B.Saravana Kumar
– B.Saravana Kumar, Commented May 25, 2015 at 11:22

Bannings · Accepted Answer · 2015-05-25 12:00:31Z

1

You can't have empty keys, try this :

let parameters = [
    "gsm_number" : Mobile,
    "name" : Name,
    "email" : Email,
    "status" : Status,
]

let jsonData = NSJSONSerialization.dataWithJSONObject(parameters, options: NSJSONWritingOptions.allZeros, error: nil)

let jsonString = "json=\(NSString(data: jsonData!, encoding: NSUTF8StringEncoding)!)"

answered May 25, 2015 at 12:00

Bannings

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Comments

Eric Aya · Accepted Answer · 2016-01-15 15:11:20Z

You jsonString does not conform to the JSON syntax.

You can't have json= at the beginning, = isn't an allowed separator in JSON, use :
You need to wrap the string variables with double quotes (and escape them)
You can't have empty keys like that with just the value missing, you have to use null

Example of valid string for your variables:

let jsonString = "[{\"gsm_number\":\(Mobile),\"name\":\"\(Name)\",\"email\":\"\(Email)\",\"status\":\(Status),\"ver_code\":null}]"

Or with a 'json' key at the beginning like you had:

let jsonString = "{\"json\":[{\"gsm_number\":\(Mobile),\"name\":\"\(Name)\",\"email\":\"\(Email)\",\"status\":\(Status),\"ver_code\":null}]}"

Put this in a Playground and show the Assistant Editor in the "View" menu, it will help you understand:

let Mobile = 42
let Name = "James"
let Email = "[email protected]"
let Status = 200
let jsonString = "[{\"gsm_number\":\(Mobile),\"name\":\"\(Name)\",\"email\":\"\(Email)\",\"status\":\(Status),\"ver_code\":null}]"
let data = jsonString.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)

Swift 1

var err: NSError?
let json = NSJSONSerialization.JSONObjectWithData(data!, options: NSJSONReadingOptions.allZeros, error: &err) as? [[String:AnyObject]]
if err != nil {
    println(err)
} else {
    println(json![0]["status"]!)
}

Swift 2

do {
    if let data = data,
      let json = try NSJSONSerialization.JSONObjectWithData(data, options: []) as? [[String:AnyObject]] {
        if let status = json[0]["status"] as? Int {
            print(status)
        }
    }
} catch let error as NSError {
    print(error.localizedDescription)
}

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