ios - 按下 UIAlertViewController 行时更改背景颜色

Question

当用户按住 UIAlertController 行时，它在 iPad 上自然会变成灰色，但我想把它变成另一种颜色。我该怎么做？

let alert = UIAlertController(title: "Title", message: "Message", preferredStyle: UIAlertController.Style.alert)
        alert.addAction(UIAlertAction(title: "Cancel", style: UIAlertAction.Style.default, handler:  { action in

        }))
        alert.addAction(UIAlertAction(title: "Settings", style: UIAlertAction.Style.default, handler:  { action in
            UIApplication.shared.open(URL(string: UIApplication.openSettingsURLString)!, completionHandler: nil)
        }))
        self.present(alert, animated: true, completion: nil)

这就是当您按住一行时 iPhone 所做的。我想改变那个背景颜色。

Answer 1

你不能。

Important

The UIAlertController class is intended to be used as-is and does not support subclassing. The view hierarchy for this class is private and must not be modified.

来源:https://developer.apple.com/documentation/uikit/uialertcontroller