JSON on Swift: Array to String/TextField Text - arrays

Question

I have problem with JSON Array that I want to be display on textfield. JSON is taken from URL. This is JSON structure:
{
description = „This is short decripton”;
);
more-description = (
„this is first line”,
„this is second line”,
„third line”,
„etc”,
„etc”
);
one-more-description = (
„this is first line”,
„this is second line”,
„third line”,
„etc”,
„etc”
);
And this is my code:
import UIKit
class RecipeViewController: UIViewController {
#IBOutlet weak var descriptionTextField: UITextView!
#IBOutlet weak var more-descriptionTextField: UITextView!
#IBOutlet weak var one-more-descriptionTextField: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
let urlAsString = "http://JSON-Address.com"
let url = NSURL(string: urlAsString)!
let urlSession = NSURLSession.sharedSession()
let jsonQuery = urlSession.dataTaskWithURL(url, completionHandler: { data, response, error -> Void in
do {
if let jsonDate = data, let jsonResult = try NSJSONSerialization.JSONObjectWithData(jsonDate, options: []) as? NSDictionary {
print(jsonResult)
let jsonDescription = jsonResult["description"] as? String
print("result: \(jsonDescription)")
let jsonMoreDescrp: AnyObject? = jsonResult["more-description"] as? Array<AnyObject>
print("result: \(jsonMoreDescrp)")
let jsonOneMoreDescrp: AnyObject? = jsonResult["one-more-description"] as? Array<AnyObject>
print("result: \(jsonOneMoreDescrp)")
dispatch_async(dispatch_get_main_queue(),{
self.descriptionTextField.text = jsonDescription
self.more-descriptionTextField.text = jsonMoreDescrp as? String
self.one-more-descriptionTextField.text = jsonOneMoreDescrp as? String
});
}
} catch let error as NSError {
print(error)
}
})
jsonQuery.resume()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
The problem is with jsonMoreDescrp & jsonOneMoreDescrp. Althought I've changed it to String, after running Xcode the result is empty. jsonDescription of course works, but this is just simple string.
I know I'm doing something wrong with Array, but - can you tell me what?

Answer 1

jsonMoreDescrp & jsonOneMoreDescrp are array. so, you can call like this
self.more-descriptionTextField.text = jsonMoreDescrp[indexValue] as? String
self.one-more-descriptionTextField.text = jsonOneMoreDescrp[indexValue] as? String
Hope this will help you.

Answer 2

Try this way, if it not works comment me the error you come across.
self.more-descriptionTextField.text = jsonMoreDescrp[indexValue].stringValue
self.one-more-descriptionTextField.text = jsonOneMoreDescrp[indexValue].stringValue
indexValue is the key of the value you want in the json.

Answer 3

[Updated] As Sudhir noticed there is also error in code, try this to show comma separated strings:
dispatch_async(dispatch_get_main_queue(),{
self.descriptionTextField.text = jsonDescription
self.more-descriptionTextField.text = (jsonMoreDescrp as? [String])?.joinWithSeparator(",") ?? ""
self.one-more-descriptionTextField.text = (jsonOneMoreDescrp as? [String])?.joinWithSeparator(",") ?? ""
});
Validate JSON structure online before using http://jsonlint.com/
Valid JSON:
{
"description": "This is short decription",
"more-description": [
"this is first line",
"this is second line",
"third line",
"etc",
"etc"
],
"one-more-description": [
"this is first line",
"this is second line",
"third line",
"etc",
"etc"
]
}

Answer 4

try this code, it is much easy to use.
First of all parse all elements of map to the variables and than do what you want with knowing structure of just created variables.
let task = session.dataTask(with: url!) {
(data, response, error) in
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as! [String : AnyObject]
if let desc = json["description"] as? String,
let moreDesc = json["more-description"] as? [String],
let oneMoreDesc = json["one-more-description"] as? [String] {
dispatch_async(dispatch_get_main_queue(),{
self.descriptionTextField.text = moreDesc
self.more-descriptionTextField.text = moreDesc.joinWithSeparator("/n")
self.one-more-descriptionTextField.text = oneMoreDesc.joinWithSeparator("/n")
});
}
} catch let error {
print (error)
}
}
task.resume()
I have not tested it, but it should work. Feel free to ask.