设置tintColor

Question

我的UIAlertController首选格式ActionSheet运行良好，没有任何问题。为了防止冗长的代码墙，我删除了UIAlertAction闭包中的操作并添加了代码：

let alert = UIAlertController(title: "More actions", message: nil, preferredStyle: .ActionSheet)
//alert.view.tintColor = UIColor(red: CGFloat(252.0/255.0), green: CGFloat(112.0/255.0), blue: CGFloat(87.0/255.0), alpha: 1.0)

alert.addAction(UIAlertAction(title: "Rename", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Move", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Keep offline", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: nil))

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

此代码工作正常，结果如下：

然而当我取消注释我设置tintColor的行时，我的.Default按钮与.Cancel按钮之间的距离会缩小：< / p>

有没有办法防止这种情况发生，或者是否是我忽略的一些微小细节的结果？

Answer 1

将按钮添加到警报控制器后设置色调颜色似乎有效：

let alert = UIAlertController(title: "More actions", message: nil, preferredStyle: .ActionSheet)

alert.addAction(UIAlertAction(title: "Rename", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Move", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Keep offline", style: .Default, handler: { (action: UIAlertAction!) -> Void in }))
alert.addAction(UIAlertAction(title: "Cancel", style: .Cancel, handler: nil))

alert.view.tintColor = UIColor(red: CGFloat(252.0/255.0), green: CGFloat(112.0/255.0), blue: CGFloat(87.0/255.0), alpha: 1.0)

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

Answer 2

需要在样式设置后设置警报视图色调。