Error while trying to phrase JSON with Swift - ios

Question

I'm trying to receive data from a JSON link in Swift Playground on Mac, I've struct all the data, but I'm having issue trying to decode all of the data, receiving the error: "Referencing instance method 'decode(_:from:)' on 'Array' requires that 'Bicimia' conform to 'Decodable'"
I've already tries to add the Codable/Decodable option, and tried to change the URLSession respectively, but nothing has changed.
struct Bicimia {
let network: Network
}
struct Network {
let company: [String]
let href, id: String
let location: Location
let name: String
let stations: [Station]
}
struct Location {
let city, country: String
let latitude, longitude: Double
}
struct Station {
let emptySlots: Int
let extra: Extra
let freeBikes: Int
let id: String
let latitude, longitude: Double
let name, timestamp: String
}
struct Extra {
let extraDescription: String
let status: Status
}
enum Status {
case online
}
let url = "https://api.citybik.es/v2/networks/bicimia"
let urlOBJ = URL(string: url)
URLSession.shared.dataTask(with: urlOBJ!) {(data, response, error) in
do {
let res = try JSONDecoder().decode([Bicimia].self, from: data!)
print(res)
}
catch {
print(error)
}
}.resume()

Answer 1

To be Decodable all properties should be Decodable down the chain:
struct Bicimia: Decodable {
let network: Network // should be decodable
}
struct Network: Decodable {
let company: [String]
let href, id: String
let location: Location // should be decodable
let name: String
let stations: [Station] // should be decodable
}
struct Location: Decodable {
let city, country: String
let latitude, longitude: Double
}
struct Station: Decodable {
let emptySlots: Int
let extra: Extra // should be decodable
let freeBikes: Int
let id: String
let latitude, longitude: Double
let name, timestamp: String
}
struct Extra: Decodable {
let extraDescription: String
let status: Status // should be decodable
}
enum Status: String, Decodable {
case online
}
Note that enums can not be Decodable alone, because they should know what is the raw value, or you should manually decode them in decode function.