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swift - 有人可以帮助将 URLSession 从 Swift 转换为 Kotlin

转载 作者：行者123 更新时间：2023-12-04 03:26:09 25 4
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我想用 Kotlin 制作多平台天气应用程序。我还想在公共(public)模块中为 Android 和 iOS 单独获取天气数据。

对于 Android 我没有任何问题，但对于 iOS 部分我有。我想使用 Foundation 框架通过 URLSession 获取和序列化数据。但它不起作用。

这是我的天气模型。

    package com.example.weatherappversion3.shared

    data class WeatherData (
        val cod: String,
        val message: Long,
        val cnt: Long,
        val list: List<ListElement>,
        val city: City
    )
    
    data class City (
        val id: Long,
        val name: String,
        val coord: Coord,
        val country: String,
        val population: Long,
        val timezone: Long,
        val sunrise: Long,
        val sunset: Long
    )
    
    data class Coord (
        val lat: Double,
        val lon: Double
    )
    
    data class ListElement (
        val dt: Long,
        val main: MainClass,
        val weather: List<Weather>,
        val clouds: Clouds,
        val wind: Wind,
        val visibility: Long,
        val pop: Double,
        val sys: Sys,
        val dtTxt: String,
        val snow: Rain? = null,
        val rain: Rain? = null
    )
    
    data class Clouds (
        val all: Long
    )
    
    data class MainClass (
        val temp: Double,
        val feelsLike: Double,
        val temp_min: Double,
        val temp_max: Double,
        val pressure: Long,
        val seaLevel: Long,
        val grndLevel: Long,
        val humidity: Long,
        val tempKf: Double
    )
    
    data class Rain (
        val the3H: Double
    )
    
    data class Sys (
        val pod: Pod
    )
    
    enum class Pod {
        D,
        N
    }
    
    data class Weather (
        val id: Long,
        val main: MainEnum,
        val description: String,
        val icon: String
    )
    
    enum class MainEnum {
        Clear,
        Clouds,
        Rain,
        Snow
    }
    
    data class Wind (
        val speed: Double,
        val deg: Long,
        val gust: Double
    )

这是我的要求:

    package com.example.weatherappversion3.shared

    import com.example.weatherappversion3.shared.constants.Constants
    //import cocoapods.Alamofire.*
    import platform.Foundation.*
    import platform.darwin.NSObject
    
    //import SwiftyJSON
    
    actual class WeatherManager {

    actual var weatherData: WeatherData? = null
    var data = NSData()
    //https://api.openweathermap.org/data/2.5/forecast?appid=e83bce43f40758140ef6927fda5cfc85&units=metric&lat=48.51320000&lon=32.25970000
    var url = "https://api.openweathermap.org/data/2.5/forecast?appid=${Constants().AppId}&units=${Constants().units}&lat=${Constants().lat}&lon=${Constants().lon}"
    actual fun getWeatherForecastFor(updateUI: ()->Unit) {
        println("Start request for iOS")
        asyncRequest(url)
        updateUI()
    }

    fun asyncRequest(url: String) {

        val delegate = object : NSObject(), NSURLSessionDataDelegateProtocol {

            override fun URLSession(session: NSURLSession, dataTask: NSURLSessionDataTask, didReceiveData: NSData) {
                data = didReceiveData
            }

            override fun URLSession(session: NSURLSession, task: NSURLSessionTask, didCompleteWithError: NSError?) {
                val response = task.response
                if (response == null || (response as NSHTTPURLResponse).statusCode.toInt() != 200) {
                    return
                }

                if (didCompleteWithError != null) {
                    return
                }

            }
        }

        val session = NSURLSession.sessionWithConfiguration(
            NSURLSessionConfiguration.defaultSessionConfiguration(),
            delegate,
            delegateQueue = NSOperationQueue.mainQueue()
        )

        session.dataTaskWithURL(NSURL(string = url)).resume()
    }

    actual fun getWeatherForecastForSpecialCity(city: String) {

    }

}

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