How to hide title/message frame in a UIAlertController?

Question

When using a UIAlertController, if I want to present a UIActionSheet with an empty title and an empty message, the frame for the expected placement

Answer 1

Update Swift 4:

let alert = UIAlertController(title: nil, message: nil, preferredStyle: UIAlertControllerStyle.actionSheet)

Just need to pass nil to title and message params.