当我单击按钮时，它仅显示一个单词，但是我想在单击时显示另一个单词

Question

类ViewController：UIViewController {

@IBOutlet weak var words: UILabel!

var positiveWords = ["dont give up","keep going","you can do that","your are strong"]

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}


@IBAction func wordsButton(_ sender: Any) {

    for w in positiveWords {

     // show array in label
        words.text = "\(w)" 

    }

}

}

当我单击按钮时，它仅显示一个单词，但是我想在单击时显示另一个单词，如何

Answer 1

您的问题有点含糊。但是这里有解决您问题的不同方法

//Wil generate different word every time you press the button
   func wordsButton(_ sender: Any) { 
        words.text = positiveWords.randomElement(
   } 

如果您想一次添加整个数组，则>

  func wordsButton(_ sender: Any) { 
     for w in positiveWords {
            words.text! += "\(w) "
        } 
  } 
[如果您想一次添加一个

var displayedWords = o
  func wordsButton(_ sender: Any) { 
     var totalWords = positiveWords.count
        if displayedWords < totalWords {
            label.text! += "\(positiveWords[displayedWords]) "
            displayedWords += 1
        }
}

Answer 2

显示给用户的单词是String的positiveWords数组的最后一个，因为您使用控制流For-In Loop来枚举数组并将当前元素设置为标签。