How to Implement FaceBook "Like-IT" Button in Iphone/Ipad?

How to implement "Facebook ILikeIt" feature in Iphone and Ipad application? Help me out with step by step solution for implement this feature in the iphone application and requirement to implement this???

Thanks in advance !!!!

Gettting error开发者_StackOverflow in this line

static UIAccessibilityTraits *traitImage = nil, *traitButton = nil;

When I am selecting iPhone Device 2.2.1.

error: syntax error before '*' token

Facebook Graph API

facebook IOS SDK