如何在Xcode，Swift3中循环旋转UIImage后显示弹出视图？

Question

我正试图点击按钮制作一个旋转轮。我点击按钮时旋转圆形图像，一次旋转后停止。现在我想显示一个弹出窗口，显示他得到了多少积分。我打算用标签来做。但我对如何显示弹出窗口感到困惑。

Answer 1

您可以使用UIAlertViewController

以下是swift 3代码

var alert = UIAlertController()

override func viewDidLoad() {
    super.viewDidLoad()
    self.alert = UIAlertController(title: "Congratulations!", message: "You have won 100 points", preferredStyle: .alert)
    self.alert.addAction(UIAlertAction(title: "Done", style: .default, handler: {action in
        switch action.style {
        case .default:
            //do your other stuff ahead after receiving points
        case .cancel:
            print("cancel")
        case .destructive:
            print("destruct")
        }}))
}

//your rotation stopped
//call the UIAlertViewController
self.present(self.alert, animated: true, completion: nil)