iPad - How can I make my UIActionSheet look like the thin one in safari?

The above UIActionSheet is thinner than the normal one. I took the screenshot from Safari when I try to bookmark some website.

Mine or the default UIActionSheet in iPad looks like the following. It is thicker than the one in Safari, especially the border.

How can I make my own UIActionSheet look like the one in Safari? Do I need to do开发者_C百科 any particular customisation or I can use some kinds of parameters for UIActionSheet?

thanks

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The instance method:

showFromBarButtonItem:animated:

Documentation:

http://developer.apple.com/library/ios/#documentation/uikit/reference/UIActionSheet_Class/Reference/Reference.html

On iPad, it will display the UIActionSheet inside a Popover.