swift – 如何在UIAlertController中更改一个UIAlertAction文本颜色

如何在UIAlertController中更改一个UIAlertAction的文本颜色,而不是所有操作按钮.

这是我的UIAlertController代码：我想将Delete UIAlertAction文本颜色更改为红色.

//Alert to select more method
func moreAlert()
{           
    let optionMenu = UIAlertController(title: "Mere", message: "", preferredStyle: UIAlertControllerStyle.ActionSheet)

    let Edit = UIAlertAction(title: "Rediger", style: .Default, handler: { action in

    })


    let Delete = UIAlertAction(title: "Slet", style: .Default, handler: { action in

    })

    let cancelAction = UIAlertAction(title: "Annullere", style: .Cancel, handler: { action in        
        print("Cancelled")
    })

    optionMenu.addAction(Edit)            
    optionMenu.addAction(Delete)            
    optionMenu.addAction(cancelAction)


    self.presentViewController(optionMenu, animated: true, completion: nil)
}

在Delete UIAlertAction的初始值设定项中使用参数样式：.destructive