ios - 使用 encodable-decodable 从 api 中的数组解析

Question

<分区>

Answer 1

如果您指的是这个 JSON，(它是有效的，不像您附加的那样......)

{
    "status": "OK",
    "predictions": [{
        "description": "Hilton Head Island, SC, USA",
        "id": "67bd386c0fb3d4f77bf3cb283a6d75565ea11732",
        "matched_substrings": [{
            "length": 6,
            "offset": 0
        }],
        "place_id": "ChIJrRnTjtx5_IgRPSii63qm5Sw",
        "reference": "ChIJrRnTjtx5_IgRPSii63qm5Sw",
        "structured_formatting": {
            "main_text": "Hilton Head Island",
            "main_text_matched_substrings": [{
                "length": 6,
                "offset": 0
            }],
            "secondary_text": "SC, USA"
        },
        "types": [
            "locality",
            "political",
            "geocode"
        ]
    }]
}

然后这是为所有 JSON 数据创建结构的方法:

struct FilteredLocations: Codable {
    let status: String
    let predictions: [Prediction]
}

struct Prediction: Codable {
    let description, id: String
    let matchedSubstrings: [MatchedSubstring]
    let placeID, reference: String
    let structuredFormatting: StructuredFormatting
    let types: [String]

    enum CodingKeys: String, CodingKey {
        case description, id
        case matchedSubstrings = "matched_substrings"
        case placeID = "place_id"
        case reference
        case structuredFormatting = "structured_formatting"
        case types
    }
}

struct MatchedSubstring: Codable {
    let length, offset: Int
}

struct StructuredFormatting: Codable {
    let mainText: String
    let mainTextMatchedSubstrings: [MatchedSubstring]
    let secondaryText: String

    enum CodingKeys: String, CodingKey {
        case mainText = "main_text"
        case mainTextMatchedSubstrings = "main_text_matched_substrings"
        case secondaryText = "secondary_text"
    }
}

然后像这样解码:

let filteredLocations = try? JSONDecoder().decode(FilteredLocations.self, from: jsonData)

编码数据:

let encoder = JSONEncoder()
encoder.outputFormatting = .prettyPrinted

do {
    let jsonData = try encoder.encode(filteredLocations)

    if let jsonString = String(data: jsonData, encoding: .utf8) {
        print(jsonString)
        // Prints out the JSON you just encoded.
    }
} catch {
    print(error.localizedDescription)
}

获取主要和次要文本:

main: filteredLocations.structuredFormatting.mainText
secondary: filteredLocations.structuredFormatting.secondaryText

我希望这个答案有用!

编辑 1:

试试这段代码:

WebServiceClient.shared.getNearbyLocationsSearchList(withParameters: parameters, inputText: searchText) { [weak self] (isSuccess, result) in
  guard let `self` = self else { return }
  if isSuccess, result != nil {
    print("Successfully fetched nearby locations!")

    if let jsonData = try? JSONSerialization.data(withJSONObject: result as Any, options: []) {
      do {
        let filteredLocations = try? JSONDecoder().decode([FilteredLocations].self, from: jsonData)

      } catch {
        print("error \(error.localizedDescription)")
      }
    }        
  }