Fetch data from JSON in swift 3 - ios

Question

I am new to iOS and my task is to fetch data from JSON. I have one JSON and from that I am able to get some data but some no. Please help me .
In this I used code :
NetworkManager.post("http://dev.depolitie.be/dev/public/api/cameras/get_cameras_list", parameters: parameters as [String : AnyObject], success: {(result: NSDictionary) -> Void in
print ("Api Success 22 : result is:\n \(result)")
if let error = result.value(forKey: "error") {
print(error)
}else {
let userDict = result.value(forKey: "data") as! NSDictionary
self.cameraArray = userDict["data"] as! NSArray
let introText = userDict["introtext"] as? Int
print("introtext",introText)
//let firstName = employee["firstName"]! as Strin
// let introtext = userDataAsArray["introtext"]! as Int
// print("introText", introtext)
}
self.cameraTableView.reloadData()
}, failure: {(error: NSDictionary?) -> Void in
print ("Api Failure : error is:\n \(String(describing: error))")
})
The inner data I get by initialising it as array but I am not able to get "introtext" field from JSON.

Answer 1

Try this code..😊
NetworkManager.post("http://dev.depolitie.be/dev/public/api/cameras/get_cameras_list", parameters: parameters as [String : AnyObject], success: {(result: NSDictionary) -> Void in
print ("Api Success 22 : result is:\n \(result)")
if let error = result.value(forKey: "error") {
print(error)
}else {
let userDict = result.value(forKey: "data") as! NSDictionary
let dataArray = userDict["data"] as! NSArray
let firstElementOfDataArray = dataArray.object(at: 0) as! NSDictionary
let adminId = firstElementOfDataArray["admin_id"] as! String
let createdAt = firstElementOfDataArray["created_at"] as! String
let description = firstElementOfDataArray["description"] as! String
}
self.cameraTableView.reloadData()
}, failure: {(error: NSDictionary?) -> Void in
print ("Api Failure : error is:\n \(String(describing: error))")
})

Answer 2

As I said in my comment your introtext is inside the root dictionary, also you need to cast to the proper type String in this case
Try with this code
if let error = result.value(forKey: "error") {
print(error)
}else {
if let userDict = result["data"] as? [String:AnyObject]{
if let cameraArrayValues = userDict["data"] as? [[String:AnyObject]]{
self.cameraArray = cameraArrayValues
}
}
if let introText = result["introtext"] as? String{
print("Introtext:" + introText)
}
}