swift - “self”在所有成员初始化之前被闭包捕获

Question

好吧，下面是我的代码:

import UIKit
import ForecastIO

class Weather {
    var temp: Float
    var condition: String
    var wind: Float
    var precip: Float

    init() {
        DarkSkyClient(apiKey: "<api key>").getForecast(latitude: Utils().getLat(), longitude: Utils().getLong()) { result in

            switch result {
            case .success(let currentForecast, _):

                self.temp = (currentForecast.currently?.temperature)!
                self.condition = (currentForecast.currently?.summary)!
                self.wind = (currentForecast.currently?.windSpeed)!
                self.precip = (currentForecast.currently?.precipitationProbability)!

            case .failure(let error):
                print(error)

            }

        }

    }

}

所以出现我的错误是因为我试图在 API 调用中初始化 temp。我知道这不是最可靠的方法，但我试图首先让它发挥作用。

第一个错误是:

'self' captured by a closure before all members were initialized

在线 DarkSkyClient(apiKey: "").getForecast(latitude: Utils().getLat(), longitude: Utils().getLong()) { 结果

我的第二个错误:

Return from initializer without initializing all stored properties

倒数第二个

现在，显然我没有正确初始化。我找不到正确的方法来完成我的最终目标。也许我这样做完全错了？

Answer 1

对我来说，这是因为我没有在初始化器中调用 super.init()。

class AnObject: NSObject {
    override init() {
//        super.init()

        let _: ()-> (Void) = {
            print(String(describing: self))
        }
    }
}