ios - 使用 UiButton 反复更改 UILabel 文本

Question

我有几个问题想用标签来显示。当我按下重置按钮时，数组中的下一个问题不会出现。我是否应该将问题放入数组中以便数组中的下一个元素出现？

func theFirstTwoQuestions() {

    // the questions will be contained in an Array
    // change the question label to one of the array values
    // when I press reset the next question will appear

    //self.questionLabel.text? = "\(questionsOneTwo)"
    questionLabel.isHidden = false
    var arrayQuestions = ["What's your name?", "How old are you", "your favorite color is?"]

    for question in arrayQuestions {

        questionLabel.text = arrayQuestions.first
    } 

    resetButton(sender: UIButton)
    arrayQuestions.remove(at: 1)
    questionLabel.text = arrayQuestions.first // "How old are you" is now the first question
}
}

Answer 1

这应该可以解决您的问题。

func theFirstTwoQuestions() 
{

// the questions will be contained in an Array
// change the question label to one of the array values
// when I press reset the next question will appear

    questionLabel.isHidden = false
    var arrayQuestions = ["What's your name?", "How old are you", "your favorite color is?"]
    var count = 0


    func onTapResetButton(sender: UIButton)
    {
        self.questionLabel.text = self.arrayQuestions[count] as? String
        if(count < arrayQuestions.count-1)
        {
            count += 1
        }
        else
        {
            count = 0
        }
    }
}

让我知道它是否对你有用。干杯:]