在Swift中更改UIAlertController上的一个或特定按钮的颜色

Question

我有一个UIController的操作表类型,显示两个项目,第一个是"从App退出",另一个是"取消".我想将显示"从应用程序注销"的按钮的字体颜色更改为红色,并将"取消"按钮保留为默认颜色.我怎样才能做到这一点？以下是我的代码:

let cancelActionSheetButton = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) { 
    (cancelSelected) -> Void in
    print("Cancel Selected")
}

let logoutActionSheet = UIAlertController(title:"Logout", message: nil, preferredStyle: UIAlertControllerStyle.ActionSheet)

let logoutActionSheetButton = UIAlertAction(title: "Logout from App", style: UIAlertActionStyle.Default) { 
    (logoutSelected) -> Void in
}

logoutActionSheet.addAction(logoutActionSheetButton)
logoutActionSheet.addAction(cancelActionSheetButton)

self.presentViewController(logoutActionSheet, animated: true, completion:nil)

Answer 1

尝试使用UIAlertActionStyle.Destructive.

let logoutActionSheetButton=UIAlertAction(title: "Logout from App", style: UIAlertActionStyle.Destructive) { ... }