小编lee*_*rob的帖子

这是我创建UIAlertController的代码

    // Create the alert controller
    var alertController = UIAlertController(title: "Are you sure you want to call \(self.number)?", message: "", preferredStyle: .Alert)

    // Create the actions
    var okAction = UIAlertAction(title: "Call", style: UIAlertActionStyle.Default) {
        UIAlertAction in
        var url:NSURL = NSURL(string: "tel://\(self.number)")!
        UIApplication.sharedApplication().openURL(url)
    }

    var cancelAction = UIAlertAction(title: "Cancel", style: UIAlertActionStyle.Cancel) {
        UIAlertAction in

    }

    // Add the actions
    alertController.addAction(okAction)
    alertController.addAction(cancelAction)

    // Present the controller
    self.presentViewController(alertController, animated: true, completion: nil)

我无法弄清楚如何更改取消和调用操作的文本颜色.标题文本目前为黑色,取消和呼叫按钮为白色.我正在努力让它们全黑,以提高能见度.有任何想法吗？谢谢!