Swift问答应用如何基于自定义结构体配置两个答题按钮

你现有代码存在两个核心问题：

1. 结构体设计冗余，Answers结构体外层多套了一层无意义的数组，导致取值路径复杂容易出错
2. configure方法内取值逻辑错误，直接把数组类型赋值给按钮标题，且answer变量未定义

方案1：优化结构体设计（更推荐） #

直接简化结构体结构，删除冗余嵌套，代码更易维护：

// 优化后的结构体，删除多余的Answers结构体
struct EasyQuestions {
    var question: String
    // 直接用字符串数组存两个选项
    var answers: [String]
    var hint: String
    var correctAnswer: String
}

class QuizViewController: UIViewController {
    // 初始化题目数组，结构更简洁
    var questions:[EasyQuestions] = [
        EasyQuestions(question: "1 + 1", answers: ["5", "2"], hint: "3-1", correctAnswer: "2"),
        EasyQuestions(question: "2 + 2", answers: ["1", "4"], hint: "5-1", correctAnswer: "4")
    ]
    
    @IBOutlet weak var Question: UILabel!
    @IBOutlet weak var button1: UIButton!
    @IBOutlet weak var button2: UIButton!
    // 记录当前展示的题目索引
    var currentQuestionIndex = 0
    
    override func viewDidLoad() {
        super.viewDidLoad()
        configure(with: questions[currentQuestionIndex])
        // 给按钮绑定点击事件
        button1.addTarget(self, action: #selector(answerButtonTapped(_:)), for: .touchUpInside)
        button2.addTarget(self, action: #selector(answerButtonTapped(_:)), for: .touchUpInside)
    }

    func configure(with question: EasyQuestions){
        self.Question.text = question.question
        // 正确给两个按钮设置标题
        self.button1.setTitle(question.answers[0], for: .normal)
        self.button2.setTitle(question.answers[1], for: .normal)
    }
    
    // 按钮点击判断逻辑
    @objc func answerButtonTapped(_ sender: UIButton) {
        let currentQuestion = questions[currentQuestionIndex]
        let selectedAnswer = sender.title(for: .normal)
        if selectedAnswer == currentQuestion.correctAnswer {
            print("回答正确")
            // 可自行添加答对后的提示、跳转下一题逻辑
        } else {
            print("回答错误，提示：\(currentQuestion.hint)")
            // 可自行添加答错后的提示逻辑
        }
    }
}

方案2：保留原有结构体仅修改配置逻辑 #

如果你不想改动原有结构体定义，只需要修正configure方法的取值路径即可：

func configure(with question: EasyQuestions){
    self.Question.text = question.question
    // 原有answers是数组，需要先取第一个元素再拿对应的answer字段
    self.button1.setTitle(question.answers[0].answer1, for: .normal)
    self.button2.setTitle(question.answers[0].answer2, for: .normal)
}

内容的提问来源于stack exchange，提问作者Bon Doe