Parse a Json in Swift

Question

I have a problem to parse a Json file. try to parse a Json file:

{
  \"id\": 1234,
  \"lists\": {
    \"pause\": {
      \"attached\": [
        {
                   


        

Answer 1

Create this as model class for you json:

import Foundation

class MyItem: Codable {
    let id: Int
    let lists: Lists
    let time: Time
}

class Lists: Codable {
    let pause: Pause
}

class Pause: Codable {
    let attached: [Attached]
}

class Attached: Codable {
    let from, to, length: Int
}

class Time: Codable {
    let start_time, end_time: Int
}

// MARK: - Helper functions for creating encoders and decoders
fileprivate func newJSONDecoder() -> JSONDecoder {
    let decoder = JSONDecoder()
    if #available(iOS 10.0, OSX 10.12, tvOS 10.0, watchOS 3.0, *) {
        decoder.dateDecodingStrategy = .iso8601
    }
    return decoder
}

fileprivate func newJSONEncoder() -> JSONEncoder {
    let encoder = JSONEncoder()
    if #available(iOS 10.0, OSX 10.12, tvOS 10.0, watchOS 3.0, *) {
        encoder.dateEncodingStrategy = .iso8601
    }
    return encoder
}

Then you can parse it like this:

let myItem = try? newJSONDecoder().decode(MyItem.self, from: jsonData)
// Read from (for example)
let from = myItem.lists.pause.attached[0].from