Ios 没有成员名称'；下标'；-敏捷的

我正在构建一个琐事应用程序，我已经制作了一个用于创建问题的类。我还创建了一个函数，该函数将在viewDidLoad（）时加载

我的initialState（）函数

当我想将按钮文本设置为问题和答案的索引时，它会说“问题”没有名为“下标”的成员，这对我来说毫无意义。当我运行应用程序时，所有内容都设置为“零”

有人能帮忙吗？

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请在我试图学习语言和错误时解释您的答案。

重新构造代码以使用答案数组。这将更容易管理。同时给出正确答案作为数组的索引

questionLabel.text = "\(firstQuestion.quizQuestion)"

//Setting the buttons text
firstAnswer.setTitle("\(firstQuestion.firstAnswer)", forState: UIControlState.Normal)
secondAnswer.setTitle("\(firstQuestion.secondAnswer)", forState: UIControlState.Normal)
thirdAnswer.setTitle("\(firstQuestion.thirdAnswer)", forState: UIControlState.Normal)
fourthAnswer.setTitle("\(firstQuestion.fourthAnswer)", forState: UIControlState.Normal)

class Question{
    var quizQuestion : String = ""
    var answers : Array<String> = Array()
    var rightAnswer : Int = 0

    init(question:String, answerOne:String, answerTwo:String, answerThree:String, answerFour:String, correctAnswer:Int)
    {
        self.quizQuestion = question
        self.answers.append(answerOne)
        self.answers.append(answerTwo)
        self.answers.append(answerThree)
        self.answers.append(answerFour)
        self.rightAnswer = correctAnswer
    }
}

let one = Question(question: "What was the first planet to be discovered using a telescope, in 1781?",
answerOne: "Mars", answerTwo: "Jupiter", answerThree: "Uranus", answerFour: "Mercury", correctAnswer: 3)



func initialState() {
    var firstQuestion: Question = arrayOfQuestions[0]

    questionLabel.text = "\(firstQuestion.quizQuestion)"

    //Setting the buttons text
    firstAnswer.setTitle("\(firstQuestion.answers[0])", forState: UIControlState.Normal)
    secondAnswer.setTitle("\(firstQuestion.answers[1])", forState: UIControlState.Normal)
    thirdAnswer.setTitle("\(firstQuestion.answers[2])", forState: UIControlState.Normal)
    fourthAnswer.setTitle("\(firstQuestion.answers[3])", forState: UIControlState.Normal)
}

课堂提问{
var quizQuestion:String=“”
var回答：Array=Array（）
var rightAnswer:Int=0
初始化（问题：字符串，答案一：字符串，答案二：字符串，答案三：字符串，答案四：字符串，正确答案：Int）
{
self.quizQuestion=问题
self.answers.append（answerOne）
self.answers.append（answerTwo）
self.answers.append（答案三）
self.answers.append（answerFour）
self.rightAnswer=正确答案
}
}
让一个=问题（问题：“1781年，第一颗用望远镜发现的行星是什么？”，
回答一：“火星”，回答二：“木星”，回答三：“天王星”，回答四：“水星”，正确答案：3）
func initialState（）{
var firstQuestion:Question=arrayOfQuestions[0]
questionLabel.text=“\（firstQuestion.quizQuestion）”
//设置按钮文本
firstAnswer.setTitle（“\（firstQuestion.answers[0]）”，用于状态：UIControlState.Normal）
secondAnswer.setTitle（“\（firstQuestion.answers[1]）”，用于状态：UIControlState.Normal）
thirdAnswer.setTitle（“\（firstQuestion.answers[2]），用于状态：UIControlState.Normal）
fourthAnswer.setTitle（“\（firstQuestion.answers[3]），用于状态：uicontrol状态.正常）
}

重新构造代码以使用应答数组。这将更容易管理。同时给出正确答案作为数组的索引

class Question{
    var quizQuestion : String = ""
    var answers : Array<String> = Array()
    var rightAnswer : Int = 0

    init(question:String, answerOne:String, answerTwo:String, answerThree:String, answerFour:String, correctAnswer:Int)
    {
        self.quizQuestion = question
        self.answers.append(answerOne)
        self.answers.append(answerTwo)
        self.answers.append(answerThree)
        self.answers.append(answerFour)
        self.rightAnswer = correctAnswer
    }
}

let one = Question(question: "What was the first planet to be discovered using a telescope, in 1781?",
answerOne: "Mars", answerTwo: "Jupiter", answerThree: "Uranus", answerFour: "Mercury", correctAnswer: 3)



func initialState() {
    var firstQuestion: Question = arrayOfQuestions[0]

    questionLabel.text = "\(firstQuestion.quizQuestion)"

    //Setting the buttons text
    firstAnswer.setTitle("\(firstQuestion.answers[0])", forState: UIControlState.Normal)
    secondAnswer.setTitle("\(firstQuestion.answers[1])", forState: UIControlState.Normal)
    thirdAnswer.setTitle("\(firstQuestion.answers[2])", forState: UIControlState.Normal)
    fourthAnswer.setTitle("\(firstQuestion.answers[3])", forState: UIControlState.Normal)
}

课堂提问{
var quizQuestion:String=“”
var回答：Array=Array（）
var rightAnswer:Int=0
初始化（问题：字符串，答案一：字符串，答案二：字符串，答案三：字符串，答案四：字符串，正确答案：Int）
{
self.quizQuestion=问题
self.answers.append（answerOne）
self.answers.append（answerTwo）
self.answers.append（答案三）
self.answers.append（answerFour）
self.rightAnswer=正确答案
}
}
让一个=问题（问题：“1781年，第一颗用望远镜发现的行星是什么？”，
回答一：“火星”，回答二：“木星”，回答三：“天王星”，回答四：“水星”，正确答案：3）
func initialState（）{
var firstQuestion:Question=arrayOfQuestions[0]
questionLabel.text=“\（firstQuestion.quizQuestion）”
//设置按钮文本
firstAnswer.setTitle（“\（firstQuestion.answers[0]）”，用于状态：UIControlState.Normal）
secondAnswer.setTitle（“\（firstQuestion.answers[1]）”，用于状态：UIControlState.Normal）
thirdAnswer.setTitle（“\（firstQuestion.answers[2]），用于状态：UIControlState.Normal）
fourthAnswer.setTitle（“\（firstQuestion.answers[3]），用于状态：uicontrol状态.正常）
}

重新构造代码以使用应答数组。这将更容易管理。同时给出正确答案作为数组的索引

class Question{
    var quizQuestion : String = ""
    var answers : Array<String> = Array()
    var rightAnswer : Int = 0

    init(question:String, answerOne:String, answerTwo:String, answerThree:String, answerFour:String, correctAnswer:Int)
    {
        self.quizQuestion = question
        self.answers.append(answerOne)
        self.answers.append(answerTwo)
        self.answers.append(answerThree)
        self.answers.append(answerFour)
        self.rightAnswer = correctAnswer
    }
}

let one = Question(question: "What was the first planet to be discovered using a telescope, in 1781?",
answerOne: "Mars", answerTwo: "Jupiter", answerThree: "Uranus", answerFour: "Mercury", correctAnswer: 3)



func initialState() {
    var firstQuestion: Question = arrayOfQuestions[0]

    questionLabel.text = "\(firstQuestion.quizQuestion)"

    //Setting the buttons text
    firstAnswer.setTitle("\(firstQuestion.answers[0])", forState: UIControlState.Normal)
    secondAnswer.setTitle("\(firstQuestion.answers[1])", forState: UIControlState.Normal)
    thirdAnswer.setTitle("\(firstQuestion.answers[2])", forState: UIControlState.Normal)
    fourthAnswer.setTitle("\(firstQuestion.answers[3])", forState: UIControlState.Normal)
}

课堂提问{
var quizQuestion:String=“”
var回答：Array=Array（）
var rightAnswer:Int=0
初始化（问题：字符串，答案一：字符串，答案二：字符串，答案三：字符串，答案四：字符串，正确答案：Int）
{
self.quizQuestion=问题
self.answers.append（answerOne）
self.answers.append（answerTwo）
self.answers.append（答案三）
self.answers.append（answerFour）
self.rightAnswer=正确答案
}
}
让一个=问题（问题：“1781年，第一颗用望远镜发现的行星是什么？”，
回答一：“火星”，回答二：“木星”，回答三：“天王星”，回答四：“水星”，正确答案：3）
func initialState（）{
var firstQuestion:Question=arrayOfQuestions[0]
questionLabel.text=“\（firstQuestion.quizQuestion）”
//设置按钮文本
firstAnswer.setTitle（“\（firstQuestion.answers[0]）”，用于状态：UIControlState.Normal）
secondAnswer.setTitle（“\（firstQuestion.answers[1]）”，用于状态：UIControlState.Normal）
thirdAnswer.setTitle（“\（firstQuestion.answers[2]），用于状态：UIControlState.Normal）
fourthAnswer.setTitle（“\（firstQuestion.answers[3]），用于状态：uicontrol状态.正常）
}

重新构造代码以使用应答数组。这将更容易管理。同时给出正确答案作为数组的索引

class Question{
    var quizQuestion : String = ""
    var answers : Array<String> = Array()
    var rightAnswer : Int = 0

    init(question:String, answerOne:String, answerTwo:String, answerThree:String, answerFour:String, correctAnswer:Int)
    {
        self.quizQuestion = question
        self.answers.append(answerOne)
        self.answers.append(answerTwo)
        self.answers.append(answerThree)
        self.answers.append(answerFour)
        self.rightAnswer = correctAnswer
    }
}

let one = Question(question: "What was the first planet to be discovered using a telescope, in 1781?",
answerOne: "Mars", answerTwo: "Jupiter", answerThree: "Uranus", answerFour: "Mercury", correctAnswer: 3)



func initialState() {
    var firstQuestion: Question = arrayOfQuestions[0]

    questionLabel.text = "\(firstQuestion.quizQuestion)"

    //Setting the buttons text
    firstAnswer.setTitle("\(firstQuestion.answers[0])", forState: UIControlState.Normal)
    secondAnswer.setTitle("\(firstQuestion.answers[1])", forState: UIControlState.Normal)
    thirdAnswer.setTitle("\(firstQuestion.answers[2])", forState: UIControlState.Normal)
    fourthAnswer.setTitle("\(firstQuestion.answers[3])", forState: UIControlState.Normal)
}

课堂提问{
var quizQuestion:String=“”
var回答：Array=Array（）
var rightAnswer:Int=0
初始化（问题：字符串，答案一：字符串，答案二：字符串，答案三：字符串，答案四：字符串，正确答案：Int）
{
self.quizQuestion=问题
self.answers.append（answerOne）
self.answers.append（answerTwo）
self.answers.append（答案三）
self.answers.append（answerFour）
self.rightAnswer=正确答案
}
}
让一个=问题（问题：“1781年，第一颗用望远镜发现的行星是什么？”，
回答一：“火星”，回答二：“木星”，回答三：“天王星”，回答四：“水星”，正确答案：3）
func initialState（）{
var firstQuestion:Question=arrayOfQuestions[0]
questionLabel.text=“\（firstQuestion.quizQuestion）”
//设置按钮文本
firstAnswer.setTitle（“\（firstQuestion.answers[0]）”，用于状态：UIControlState.Normal）
secondAnswer.setTitle（“\（firstQuestion.answers[1]）”，用于状态：UIControlState.Normal）
thirdAnswer.setTitle（“\（firstQuestion.answers[2]），用于状态：UIControlState.Normal）
fourthAnswer.setTitle（“\（第一个问题.答案[3]）”，