How can I decode JSON with array and more JSON inside? - ios

Question

I recently began with swift. I need decode the json on below.
The JSON has inside two more JSON the first one (validation) does not matter. The second one (result) has a JSON array inside (serviceCenter). I need the information of each servicenter. I try to use servicecenter as decodeable class to get a servicenter object, but as the JSON does not have the proper format I can't do it.
[
{
"validation": {
"bValid": true,
"sDescription": "Access true."
}
},
{
"result": {
"serviceCenter": [
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "3666",
"sVin": "6JDO2345",
"sMiles": "3666",
"bDamage": "1",
"dDateTime": "04-17-2018 9:38 AM"
},
{
"model": "F360",
"color": "Red",
"make": "Ferrari",
"sTag": "0010",
"sVin": "6JDO2347",
"sMiles": "80000",
"bDamage": "1",
"dDateTime": "04-17-2018 9:25 AM"
},
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "0009",
"sVin": "6JDO2345",
"sMiles": "25000",
"bDamage": "1",
"dDateTime": "04-17-2018 9:23 AM"
},
{
"model": "Vanquish",
"color": "Purple",
"make": "Aston Martin",
"sTag": "0003",
"sVin": "6JDO2345",
"sMiles": "20000",
"bDamage": "1",
"dDateTime": "04-12-2018 10:37 AM"
}
]
}
}
]
I try so much but i cant do it.
This its my code now, Could someone help me please
do {
let parseoDatos = try JSONSerialization.jsonObject(with: data!) as! [AnyObject]
let h = type(of: parseoDatos )
print("'\(parseoDatos)' of type '\(h)'")
let contenido = parseoDatos[1]["result"]
if let services = contenido!! as? Dictionary<String, Array<Any>> {
for (_,serviceArray) in services {
for sc in serviceArray{
let h = type(of: sc )
print("'\(sc)' of type '\(h)'")
}
}
}
} catch {
print("json processing failed")
}
the result of print sc is
{
bDamage = 1;
color = Purple;
dDateTime = "04-17-2018 9:38 AM";
make = "Aston Martin";
model = Vanquish;
sMiles = 3666;
sTag = 3666;
sVin = 6JDO2345;
}' of type '__NSDictionaryI'

Answer 1

You can use Codable
Initial response have array of InitialElement and InitialElement is is struct with validation , result , result may be nil
don't forget to add your URL at url
URLSession.shared.dataTask(with: url!) { (data, response, error) in
if let initial = try? JSONDecoder().decode([InitialElement].self, from: data){
// inital now have array of InitialElement and InitialElement is is struct with validation , result , result may be nil
print(initial)
}
}.resume()
With this Model for Data:
import Foundation
struct InitialElement: Codable {
let validation: Validation?
let result: ResultData?
}
struct ResultData: Codable {
let serviceCenter: [ServiceCenter]
}
struct ServiceCenter: Codable {
let model, color, make, sTag: String
let sVin, sMiles, bDamage, dDateTime: String
}
struct Validation: Codable {
let bValid: Bool
let sDescription: String
}
extension InitialElement {
init(data: Data) throws {
self = try JSONDecoder().decode(InitialElement.self, from: data)
}
}

Answer 2

try this code
enum ParsingError: Error {
case wrongFormat(String)
}
do {
let jsonObject = try JSONSerialization.jsonObject(with: data!)
guard let array = jsonObject as? [Any] else {
throw ParsingError.wrongFormat("wrong root object")
}
guard array.count == 2 else {
throw ParsingError.wrongFormat("array count != 2")
}
guard let dict = array[1] as? [String: Any] else {
throw ParsingError.wrongFormat("can't parse dict from array")
}
guard let serviceCenters = (dict["result"] as? [String: Any])?["serviceCenter"] else {
throw ParsingError.wrongFormat("can't parse serviceCenters")
}
guard let serviceCentersArray = serviceCenters as? [[String : Any]] else {
throw ParsingError.wrongFormat("serviceCenters is not an array")
}
print("\(type(of: serviceCentersArray))\n", serviceCentersArray)
} catch {
print("json processing failed: \(error)")
}

Answer 3

Thanks all for yours answers, it's my first question here, and i feels great all the help. Finally i can resolve the problem. Maybe not the best way, but here its the code:
let task = URLSession.shared.dataTask(with: request) { (data: Data?, response: URLResponse?, error: Error?) in
if error != nil{
print("error=\(String(describing: error))")
return
}
do {
let parseoDatos = try JSONSerialization.jsonObject(with: data!) as! [AnyObject]
let h = type(of: parseoDatos )
print("'\(parseoDatos)' of type '\(h)'")
let contenido = parseoDatos[1]["result"]
if let services = contenido!! as? Dictionary<String, Array<Any>> {
for (_,serviceArray) in services {
for sc in serviceArray{
let h = type(of: sc )
print("'\(sc)' of type '\(h)'")
let valid = JSONSerialization.isValidJSONObject(sc) // true
print(valid)
do {
let jsonData = try JSONSerialization.data(withJSONObject: sc, options: .prettyPrinted)
let serviceDecoded = try JSONSerialization.jsonObject(with: jsonData, options: [])
if let scJSON = serviceDecoded as? [String:String] {
print ("--------------------------")
print("'\(scJSON)' of type '\(type(of: scJSON))'")
print ("--------------------------")
}
} catch {
print(error.localizedDescription)
}
i think later y try to use Codable as suggested, but for now the code is working ok. Thanks again!

Answer 4

//try this it is working
let arrayMain=try?JSONSerialization.jsonObject(with:jsonData!,options:.mutableLeaves) as! Array<Any>
//print(arrayMain!)
if let firstDictionart=arrayMain![0] as? [String: Any] {
if let insideFirstDict = firstDictionart["validation"] as? [String: Any]{
print(insideFirstDict["bValid"]!)
print( insideFirstDict["sDescription"]!)
}
}
if let resultDictionary=arrayMain![1] as? [String: Any] {
if let serviceDictionary = resultDictionary["result"] as? [String: Any] {
for array in serviceDictionary["serviceCenter"] as! Array<Any>{
if let infoDicti=array as? [String: Any] {
print( infoDicti["color"]!)
print( infoDicti["make"]!)
print( infoDicti["color"]!)
print( infoDicti["sTag"]!)
print( infoDicti["sVin"]!)
print( infoDicti["sMiles"]!)
print( infoDicti["sVin"]!)
print( infoDicti["model"]!)
print( infoDicti["bDamage"]!)
print( infoDicti["dDateTime"]!)
}
}
}
}