#41 Swift JSON decode 練習(3/14題)

抓取網路提供的 JSON API，解碼取得資料。(#hw14–2)

新手的 Swift JSON decode 練習題

操作畫面：

螢幕截圖：

新手的 Swift JSON decode 練習題

1. 搭配 AI 建立自己感興趣的 JSON API

2. iTunes

3. apple marketing tools RSS generator

//待實驗

4. Random User Generator
5. GitHub
6. Joke
7. REST Countries
8. Open Trivia(是非題/選擇題)
9. IG
10. Xcode Releases
11. JSONPlaceholder
12.UI Faces
13. 請 AI 提供 API 網址
14. 第三方 API 整理

1. 搭配 AI 建立自己感興趣的 JSON API

#40 搭配 AI 建立 JSON API, 並用程式抓取API內容

https://raw.githubusercontent.com/JasonHungApp/JSON_API/main/TaiwanSnackPreparation.json

struct TaiwaneseSnack: Codable {
    let name: String
    let type: String
    let ingredients: [Ingredient]
    let instructions: [String]
    let details: Details
}
struct Ingredient: Codable {
    let name: String
    let quantity: String
}
struct Details: Codable {
    let description: String
    let origin: String
    let popular_places: [String]
}

解碼的 decoder。

let jsonURL = URL(string: "https://raw.githubusercontent.com/JasonHungApp/JSON_API/main/TaiwanSnackPreparation.json")! // Replace with the actual URL or local file URL
// Define a function to fetch and decode JSON
func fetchJSONData(completion: @escaping ([TaiwaneseSnack]?) -> Void) {
    URLSession.shared.dataTask(with: jsonURL) { data, response, error in
        guard let data = data, error == nil else {
            print("Error fetching JSON:", error?.localizedDescription ?? "Unknown error")
            completion(nil)
            return
        }
        
        do {
            let snacks = try JSONDecoder().decode([TaiwaneseSnack].self, from: data)
            completion(snacks)
        } catch {
            print("Error decoding JSON:", error.localizedDescription)
            completion(nil)
        }
    }.resume()
}

    func testMyAPIinGithub(){
        // Call the function to fetch JSON data
        fetchJSONData { snacks in
            if let snacks = snacks {
                // Handle the decoded JSON data
                for snack in snacks {
                    print("Name: \(snack.name)")
                    print("Type: \(snack.type)")
                    print("Ingredients:")
                    for ingredient in snack.ingredients {
                        print("- \(ingredient.name): \(ingredient.quantity)")
                    }
                    print("Instructions:")
                    for instruction in snack.instructions {
                        print("- \(instruction)")
                    }
                    print("Details:")
                    print("- Description: \(snack.details.description)")
                    print("- Origin: \(snack.details.origin)")
                    print("- Popular Places: \(snack.details.popular_places)")
                    print("\n")
                }
            }
        }
    }

testJsonAPIinGithub()

2. iTunes

iTunes Search API 文件

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

struct MusicData: Codable {
    let resultCount: Int
    let results: [MusicResult]
}

struct MusicResult: Codable {
    let artistName: String       //歌手名稱
    let collectionName: String   //專輯名稱
    let trackName: String        //歌曲名稱
    let artworkUrl100 : String   //專輯照片
    let previewUrl: String       //試聽
    // 其他屬性...

}

func testiTunesAPI(){
    // API 網址
     let apiUrl = "https://itunes.apple.com/search?term=%E5%8A%89%E8%8B%A5%E8%8B%B1&media=music&country=tw"

     guard let url = URL(string: apiUrl) else {
         print("無效的 URL")
         return
     }

     URLSession.shared.dataTask(with: url) { (data, response, error) in
         if let error = error {
             print("發生錯誤：", error)
             return
         }

         guard let data = data else {
             print("未收到資料")
             return
         }

         do {
             let musicData = try JSONDecoder().decode(MusicData.self, from: data)

             for result in musicData.results{
                 // 在這裡你可以使用從 API 取得的數據
                 print("歌手名稱：『\(result.artistName)』")
                 print("專輯名稱：『\(result.collectionName)』")
                 print("歌曲名稱：『\(result.trackName)』")
                 print("照片URL：『\(result.artworkUrl100)』")
                 print("試聽URL：『\(result.previewUrl)』")
                 print("")

             }
         } catch {
             print("解碼 JSON 時發生錯誤：", error)
         }
     }.resume()
}

3. apple marketing tools RSS generator

可以查詢各地的熱門播放排行 https://rss.applemarketingtools.com/

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

GitHub - JasonHungApp/phw14-2-json-decode

參考

新手的 Swift JSON decode 練習題

串接 API 不能不懂的 JSON

JSON Editor Online