Swift：从 JSON 编码的数据中获取数组

你可以试试

struct Root: Codable {
    let quizzes: [Quiz]
    let pageno: Int
    let nextURL: String

    enum CodingKeys: String, CodingKey {
        case quizzes, pageno
        case nextURL = "nextUrl"
    }
}

struct Quiz: Codable {
    let id: Int
    let question: String
    let author: Author?
    let attachment: Attachment
    let favourite: Bool
    let tips: [String]
}

struct Attachment: Codable {
    let filename: String
    let mime: MIME
    let url: String
}

enum MIME: String, Codable {
    case imageJPEG = "image/jpeg"
}

struct Author: Codable {
    let id: Int
    let isAdmin: Bool?
    let username: String
}

let roo = try? JSONDecoder().decode(Root.self,from:jsonData)
print(roo)