带有OpenWeatherMap接口的SwiftUI天气应用返回“记录指标失败”错误

Question

我正在尝试设置一个新的SwiftUI天气应用程序，它使用OpenWeatherMap Api字符串API name}&appid={API key}“在城市中传递。我设置了我的contentView、模型和viewModel来返回城市名称、温度和天气描述，但在运行应用程序时仍然收到以下错误：

2021-11-09 23:26:56.923188-0500 SwftUIMVVMWeatherDemo[13982:634181] [boringssl] boringssl_metrics_log_metric_block_invoke(144) Failed to log metrics
failed

我的contentView、型号和viewModel如下：

ContentView

import SwiftUI

struct ContentView: View {
    
    @StateObject var viewModel = WeatherViewModel()
        
    var body: some View {
        NavigationView {

            VStack {
                
                Text(viewModel.name)
                    .font(.system(size: 32))
                Text(viewModel.temp)
                    .font(.system(size: 44))
                Text(viewModel.descriptionText)
                    .font(.system(size: 24))

                Spacer()
            }
            .navigationTitle("Weather MVVM")
        }.padding()
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

模型

import Foundation

struct WeatherModel: Codable {
    let name: String
    let main: CurrentWeather
}

struct CurrentWeather: Codable {
    let temp: Float
    let weather: [WeatherInfo]
}

struct WeatherInfo: Codable {
    let description: String
}

ViewModel

import Foundation

class WeatherViewModel: ObservableObject {
    
    @Published var name: String = "-"
    @Published var temp: String = "-"
    @Published var descriptionText: String = "-"
    
    init() {
        fetchWeather()
    }
    
    func fetchWeather() {
                
        guard let url = URL(string: "https://api.openweathermap.org/data/2.5/weather?q=chicago&appid=<myAPIKeyGoesHere>") else {
            return
        }
        
        let task = URLSession.shared.dataTask(with: url) { data, _, error in
            // get data
            guard let data = data, error == nil else {
                return
            }
            
            //convert data to model
            do {
                let model = try JSONDecoder().decode(WeatherModel.self, from: data)
                
                DispatchQueue.main.async {                    
                    self.name = model.name
                    self.temp = "\(model.main.temp)"
                    self.descriptionText = model.main.weather.first?.description ?? "No Description"
                }
            }
            catch {
                print("failed")
            }
        }
        task.resume()
    }
}

错误消息不明确。你知道可能出了什么问题吗？感谢您的反馈！

Answer 1

这可能是因为你的型号不正确。试试这个：

struct WeatherModel: Codable {
    let name: String
    let main: CurrentWeather
    let weather: [WeatherInfo]   // <--- here
}

struct CurrentWeather: Codable {
    let temp: Float
    // let weather: [WeatherInfo]  // <--- NOT here
}

这座城市也是Chicago，尽管它似乎与chicago合作