codable

问题 How to decode following json using Swift 4? { "data": { "id": 22, "packageId": 5, "Package": { "id": 5, "color": "blue" } }, "error": false, "message": "Successfully Fetched" } I have tried it using following: struct Root: Codable { enum CodingKeys: String, CodingKey { case id = "id" case packageId = "packageId" case package = "Package" } var package : Package var id : Int var packageId : Int } struct Package : Codable { var id : Int var color : String } It is giving me following error:

问题 I have an array of objects that looks like this that I want to decode let accountPending = """ { "blocks": { "F143CCC051927EEF59EEA78D16D80F855052BBF159EA6602843904C9445": { "amount": "10000000000000000000000000000000", "source": "6xswkroybxydyzaxybb1h531sx34omiu7an9t9jy19f9mca7a36s7by5e" }, } } """.data(using: .utf8)! So I'm trying something along these lines struct PendingBlock: Decodable { let work: [String: PendingBlockData] enum CodingKeys: String, CodingKey { case work = "???" } init

问题 I've got a API response structure, representing a user object, that looks like this: { "statuscode": 200, "response_type": 3, "errormessage": null, "detailresponse": { "id": "2", "shopifyautosync": null, "platformfeepercentage": null, "invited": null, "requiresyoutubesocialmediaupdate": 1, // Other properties ... } I'm using JSONDecoder().decode to decode to following structures: import Foundation class Response: Decodable { var statuscode: Int? var response_type: Int? // Other properties var

问题 I am trying to parse some JSON response coming from CoinmarketCap using the JSONDecoder() in Swift 4. But the problem is that the response from json is changing according to user input. e.g if user wants the price in eur, the output is following: [ { "price_eur": "9022.9695444" } ] but if user wants the price in gbp: [ { "price_gbp": "7906.8032145" } ] So the question is how should I make the struct that inherits from Decodable if the variable(json key) name is changing? 回答1: You can decode

问题 I am building a game using SpriteKit and Swift 4, with a number of custom classes in the SKNode family. I am trying to use the Codable protocol with them to (hypothetically) make saving the game easier. As a bit of context, here is a high level overview of the main classes in the game: Hero class, custom SKSpriteNode, implements Codable. The Hero class, as a property, has a dictionary in the form of: [String:MapNode] MapNode class, custom SKSpriteNode, implements Codable. The MapNode class,

问题 trying to switch some of my codebase over to Swift 4's new nifty Codable protocol. My setup looks something like this: class Base: Object, Codable { dynamic var id: String = "" dynamic var timestamp: String = "" private enum CodingKeys: String, CodingKey { case id = "_id" case timestamp = "timestamp" } } class User: Base { dynamic var name: String = "" private enum CodingKeys: String, CodingKey { case name = "name" } required init(from decoder: Decoder) throws { let container = try decoder

问题 Looking for some input as to how you would handle the scenario I recently ran into. I have been using Swift 4s Codable with success but today noticed a crash that I didn't expect. The API that I am working with, says it returns a boolean for the key manage_stock . My stubbed struct looks like: struct Product: Codable { var manage_stock: Bool? } That works fine, the problem is that the API sometimes returns a string instead of a boolean . Because of this, my decode fails with: Expected to

问题 My data structure has an enum as a key, I would expect the below to decode automatically. Is this a bug or some configuration issue? import Foundation enum AnEnum: String, Codable { case enumValue } struct AStruct: Codable { let dictionary: [AnEnum: String] } let jsonDict = ["dictionary": ["enumValue": "someString"]] let data = try! JSONSerialization.data(withJSONObject: jsonDict, options: .prettyPrinted) let decoder = JSONDecoder() do { try decoder.decode(AStruct.self, from: data) } catch {

问题 Swift 4 added the new Codable protocol. When I use JSONDecoder it seems to require all the non-optional properties of my Codable class to have keys in the JSON or it throws an error. Making every property of my class optional seems like an unnecessary hassle since what I really want is to use the value in the json or a default value. (I don't want the property to be nil.) Is there a way to do this? class MyCodable: Codable { var name: String = "Default Appleseed" } func load(input: String) {

问题 Here is my JSON { "id": 1, "user": { "user_name": "Tester", "real_info": { "full_name":"Jon Doe" } }, "reviews_count": [ { "count": 4 } ] } Here is the structure I want it saved to (incomplete) struct ServerResponse: Decodable { var id: String var username: String var fullName: String var reviewCount: Int enum CodingKeys: String, CodingKey { case id, // How do i get nested values? } } I have looked at Apple's Documentation on decoding nested structs, but I still do not understand how to do