How to add Twitter to my iOS 5 app? [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical an开发者_如何学编程d cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 11 years ago.

How do I integrate Twitter into my iOS 5 app? Is there an Apple Twitter API?

How should I make this backwards compatible for iOS 4?