ViewController.Type没有成员名称'answerOne' - SWIFT [英] ViewController.Type does not have a member names 'answerOne' - SWIFT

问题描述

我正在制作一个快速的应用程序。这是一个有趣的琐事应用程序，我遇到了一个我以前没见过的问题。 （我是swift和ios开发错误的新手）

I am making a swift app. It is a trivia app for fun and I have run into an issue that I havent seen before. (I am new to swift and ios development errors)

import UIKit

class TriviaViewController: UIViewController {

@IBOutlet var myQuestionCounter: UILabel!
@IBOutlet var myQuestion: UILabel!
@IBOutlet var firstAnswer: UIButton!
@IBOutlet var secondAnswer: UIButton!
@IBOutlet var thirdAnswer: UIButton!
@IBOutlet var fourthAnswer: UIButton!



var timer = NSTimer() //TO-DO
var count = 0
var questionCounter = 0

var firstQuestion = "What was the first planet to be discovered using the telescope, in 1781?"
var answerOne = "Mercury"
var answerTwo = "Uranus"
var answerThree = "Venus"
var answerFour = "Jupiter"

var firstCorrectAnswer = 2

//This next line gives the ERROR
let questionOneArray = [answerOne, answerTwo, answerThree, answerFour, firstCorrectAnswer]

}

当我声明questionOneArray时，它说TriviaViewController没有名为'answerOne'的成员

When I declare the "questionOneArray", it says "TriviaViewController does not have a member named 'answerOne'"

请向我解释这个错误是什么以及我如何解决它。
谢谢。

Please explain to me what this error is and how I can fix it. Thank you.

推荐答案

解决方案1 ​​：您的代码不在方法内，你必须将它包装在方法中。检查此 stackoverflow答案

Solution 1 : Your code is not inside a method, you have to wrap it inside the method. Check this stackoverflow answer

解决方案2 ：在 struct 中保留问题和答案并访问它们，如果你不想将它包装在里面一个函数。

Solution 2 : Keep your questions and answers inside struct and access them, if you don't want to wrap it inside a function.

struct firstQuestion {
    static var question = "What was the first planet to be discovered using the telescope, in 1781?"
    static var answerOne = "Mercury"
    static var answerTwo = "Uranus"
    static var answerThree = "Venus"
    static var answerFour = "Jupiter"
    static var correctAnswer = "Correct Answer"
}

var questionOneArray = [firstQuestion.answerOne, firstQuestion.answerTwo, firstQuestion.answerThree, firstQuestion.answerFour, firstQuestion.correctAnswer]

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