Dialog Box for Login with Social Media Accounts

I have been looking for the ways to integrate facebook, twitter or email in my iphone App but I didn't find the way to do the dialog box which proposes these previous options...

Here is what开发者_高级运维 I am looking to do

_{(source: fonearena.com)}

It seems like an alert view but it sure isn't ... anyone knows how to do that ? (I guess it is a predefined object) ;)

---

It's a UIActionSheet.

Heres the Class Reference: http://developer.apple.com/iphone/library/documentation/uikit/reference/UIActionSheet_Class/Reference/Reference.html

---

It is an UIActionSheet. If you are looking for Twitter code then look at my Twitter code for the iPhone. It was specifically designed for 'Share' functionality:

http://github.com/st3fan/iphone-twitter/