无法从任务（URLSession.shared.dataTask）之外的JSON保存数据

Question

class QuizzesModel{

var quizzes = [Quizz]()


 func dameQuizzes(theURL:String){
    let url = URL(string: theURL)
    var quizzes = [Quizz]()

    let task = URLSession.shared.dataTask(with:url!) { (data, response, error) in
    do {
        let parseData = try JSONSerialization.jsonObject(with: data!) as! [String:AnyObject]

        if let preguntas = parseData["quizzes"] as? NSArray{


            for x in (preguntas as? [[String:Any]])!{

                var quizz = Quizz(image: "", question: "", tips: [""])

                if let adjuntos = x["attachment"] as? NSDictionary{
                    if let urlImagen = adjuntos["url"] as? String{
                        quizz.image = urlImagen

                    }
                }
                if let question = x["question"] as? String{
                    quizz.question = question

                    }
                if let pistas = x["tips"] as? NSArray{
                    quizz.tips = pistas

                }

                quizzes.append(quizz)
            }

        }

    } catch let error as NSError{
        print(error)
    }

        print(quizzes[0].question)

}

    print(quizzes[0].question)
    task.resume()



}

}

代码末尾的第一个 print（quizzes [0] .question）有效，但下一个不起作用，在 let task = URLSession.shared.dataTask（ with：url！）{

，因此我们无法将测验附加到测验数组中并在此方法之外使用它们。

我将非常感谢您的帮助：）