新手的 Swift JSON decode 練習題

• 搭配 AI 建立自己感興趣的 JSON API
• iTunes
• apple marketing tools RSS generator
• Random User Generator
• GitHub
• Joke
• REST Countries
• Open Trivia(是非題/選擇題)
• IG
• Xcode Releases
• JSONPlaceholder
• UI Faces
• 請 AI 提供 API 網址
• 第三方 API 整理

題目

• 搭配 AI 建立自己感興趣的 JSON API

搭配 AI 建立自己感興趣的 JSON API

• iTunes

Overview

ex

https://itunes.apple.com/search?term=戴佩妮&media=music&country=tw

• apple marketing tools RSS generator

RSS Builder

ex

https://rss.applemarketingtools.com/api/v2/tw/music/most-played/10/songs.json

• Random User Generator

Random User Generator

ex

https://randomuser.me/api/?results=10

• GitHub

GitHub REST API - GitHub Docs

ex

https://api.github.com/users/twostraws/followers

• JokeAPI

JokeAPI

• REST Countries

REST Countries

• Open Trivia API

Open Trivia DB

• IG

抓取方法可參考以下連結。

抓取 IG 動態的 JSON 資料

若想直接練習，可從以下網址抓取最近退休的費神 Roger Federer 的 IG 動態 JSON。

https://raw.githubusercontent.com/AppPeterPan/CutePic/main/rogerfederer.json

• Xcode Releases

https://xcodereleases.com/data.json

• JSONPlaceholder

JSONPlaceholder

• UI Faces

UI Faces | Free AI-generated avatars for your creative projects

• 請 AI 提供 API 網址

• 第三方 API 整理

第三方 API 整理

解答

• iTunes

https://itunes.apple.com/search?term=戴佩妮&media=music&country=tw

struct SearchResponse: Decodable {
    let resultCount: Int
    let results: [StoreItem]
}

struct StoreItem: Decodable {
    let artistName: String
    let trackName: String
    let collectionName: String?
    let previewUrl: URL
    let artworkUrl100: URL
    let trackPrice: Double?
    let releaseDate: Date
    let isStreamable: Bool?
}

解碼的 decoder。

let decoder = JSONDecoder()
decoder.dateDecodingStrategy = .iso8601
let searchResponse = try decoder.decode(SearchResponse.self, from: data)

• apple marketing tools RSS generator

https://rss.applemarketingtools.com/api/v2/tw/music/most-played/10/songs.json

struct SearchResponse: Decodable {
    let feed: Feed
}

struct Feed: Decodable {
    let title: String
    let results: [Item]
}

struct Item: Decodable {
    let artistName: String
    let id: String
    let name: String
    let artworkUrl100: URL
    let releaseDate: Date
    let url: URL
}

解碼的 decoder。

let decoder = JSONDecoder()
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd"
decoder.dateDecodingStrategy = .formatted(dateFormatter)
let searchResponse = try decoder.decode(SearchResponse.self, from: data)

• Random User Generator

https://randomuser.me/api/?results=10

struct UsersResponse: Decodable {
    let results: [User]
}

struct User: Decodable {
    let gender: String
    let name: Name
    let email: String
    let picture: Picture
    let dob: Dob
    let location: Location
}

struct Name: Decodable {
    let title: String
    let first: String
    let last: String
}

struct Picture: Decodable {
    let large: String
    let medium: String
    let thumbnail: String
}

struct Dob: Decodable {
    let date: Date
    let age: Int
}

struct Location: Decodable {
    let city: String
    let country: String
    let state: String
    let coordinates: Coordinate
    let street: Street
}

struct Coordinate: Decodable {
    let latitude: String
    let longitude: String
}

struct Street: Decodable {
    let number: Int
    let name: String
}

解碼的 decoder。

let decoder = JSONDecoder()
let dateFormatter = ISO8601DateFormatter()
dateFormatter.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
decoder.dateDecodingStrategy = .custom({ decoder in
    let container = try decoder.singleValueContainer()
    let dateString = try container.decode(String.self)
    if let date = dateFormatter.date(from: dateString) {
        return date
    } else {
        throw DecodingError.dataCorruptedError(in: container, debugDescription: "Invalid date format")
    }
})
let usersResponse = try decoder.decode(UsersResponse.self, from: data)

• GitHub

https://api.github.com/users/twostraws/followers

struct Follower: Decodable {
    let login: String
    let id: Int
    let avatarUrl: URL
    let htmlUrl: URL
    let reposUrl: URL
}

解碼的 decoder。

let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
let followers = try decoder.decode([Follower].self, from: data)

• IG

https://www.instagram.com/rogerfederer/?__a=1&__d=dis

struct IGResponse: Decodable {
    let graphql: Graphql
}

struct Graphql: Decodable {
    let user: User
}

struct User: Decodable {
    let biography: String
    let fullName: String
    let edgeFollowedBy: Count
    let edgeFollow: Count
    let profilePicUrl: URL
    let edgeOwnerToTimelineMedia: EdgeOwnerToTimelineMedia
}

struct Count: Decodable {
    let count: Int
}

struct EdgeOwnerToTimelineMedia: Decodable {
    let count: Int
    let edges: [Edge]
}

struct Edge: Decodable {
    let node: Node
    
    struct Node: Decodable {
        let displayUrl: URL
        let edgeMediaToCaption:  Caption
        let edgeMediaToComment: Count
        let takenAtTimestamp: Date
        let edgeLikedBy: Count
        let dimensions: Dimension
        let thumbnailResources: [Thumbnail]
    }
}

struct Dimension: Decodable {
    let height: Int
    let width: Int
}

struct Caption: Decodable {
    let edges: [TextEdge]
}
        
struct TextEdge: Decodable {
    let node: Node
    
    struct Node: Decodable {
        let text: String
    }
}

struct Thumbnail: Decodable {
    let src: URL
    let configWidth: Int
    let configHeight: Int
}

解碼的 decoder。

let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
decoder.dateDecodingStrategy = .secondsSince1970
let igResponse = try decoder.decode(IGResponse.self, from: data)