iphone - IOS facebook集成like按钮

Question

NSMutableDictionary *params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"hello", @"name",
                                   @"This post has been liked.", @"caption",
                                   Post, @"description",
                                   @"http://www.abc.com/", @"link",
                                   @"http://www.freeimagehosting.net/newuploads/49ncw.png", @"picture",
                                   actionLinksStr, @"actions",
                                   nil];


    [facebook requestWithGraphPath:@"me/feed" andParams:params andHttpMethod:@"POST" andDelegate:self];

该帖子已成功发布在我的墙上，但我希望它在发布的同时被点赞。这将增加点赞数。请帮忙