ios - int32 不能转换为 int

Question

我正在尝试在 xcode 中制作一个随机数生成器 ios 应用程序，但在尝试使用 rand() 方法时出现错误我收到以下错误； “int32 不可转换为 int” 我试图将“int”更改为“int32”，它没有给我任何错误，但因为我这样做了，所以没有显示任何数字。我该如何解决这个问题？

注意:我用的是swift语言

代码:

@IBOutlet var lblNum: UILabel!
@IBAction func btnGenerateNum(sender: UIButton, forEvent event: UIEvent) {
    let text: Int = rand()

    switch(text) {
    case 0:
    lblNum.text = "0"
    break;

    case 1:
        lblNum.text = "1"
        break;

    case 2:
        lblNum.text = "2"
        break;

    case 3:
        lblNum.text = "3"
        break;

    case 4:
        lblNum.text = "4"
        break;

    case 5:
        lblNum.text = "5"
        break;

    case 6:
        lblNum.text = "6"
        break;

    case 7:
        lblNum.text = "7"
        break;

    case 8:
        lblNum.text = "8"
        break;

    case 9:
        lblNum.text = "9"
        break;

    default:
        break;
    }

Answer 1

@IBAction func btnGenerateNum(sender: UIButton, forEvent event: UIEvent) {

    lblNum.text = "\(arc4random_uniform(10))"
}