Question

Does anybody have idea about how to post a wall on
facebook after login button in iphone.
i have to post default image and text.
If yes in which fb class it have to write .i have latest sdk for facebook.
Thanks

Answer 1

using FBConnect library after login you can use the following method to post on the users wall

Facebook *facebook = [[[UIApplication sharedApplication] delegate] facebook];
    NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"###yourAPIKeY###", @"api_key",
                                   @"###Your Message###", @"message",
                                   @"###link if you want###", @"link",
                                   @"### a picture if you want###", @"picture",
                                   @"###name of your fb app###", @"name",
                                   @"###Description###", @"description",
                                   nil];
    [facebook requestWithGraphPath:@"me/feed" 
                         andParams:params
                     andHttpMethod:@"POST"
                       andDelegate:self];

If you want it to happen right after the user logged in it should be implemented in the following method:

-(void) fbDidLogin
{
}

be sure to note that you need to ask from the user publish_stream permissions