facebook

static NSString* kAppId = @"210849718975311";

In DidLoad :-


permissions = [[NSArray alloc] initWithObjects:@"read_stream", @"publish_stream",@"offline_access", nil];
    [permissions retain];
    facebook = [[Facebook alloc] initWithAppId:kAppId andDelegate:self];


#pragma mark -Login for Facebook
- (void)fbDidLogin
{
    [facebook requestWithGraphPath:@"me" andDelegate:self];
    // Save authorization information
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [defaults setObject:[facebook accessToken] forKey:@"FBAccessTokenKey"];
    [defaults setObject:[facebook expirationDate] forKey:@"FBExpirationDateKey"];
    [defaults synchronize];
   
    //Remove Old User detail
    [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"username"];
    [[NSUserDefaults standardUserDefaults]removeObjectForKey:@"password"];
    appDelegate.isLogin = YES;
    btnLogin.hidden= YES;
    btnLogout.hidden = NO;
}
-(void)fbDidNotLogin:(BOOL)cancelled
{
}
- (void)fbDidLogout
{
    appDelegate.isLogin = NO;
  
    NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
    [facebook invalidateSession];
    [defaults removeObjectForKey:@"FBAccessTokenKey"];
    [defaults removeObjectForKey:@"FBExpirationDateKey"];
    [defaults synchronize];
   
    NSHTTPCookieStorage* cookies = [NSHTTPCookieStorage sharedHTTPCookieStorage];
    //  NSArray* facebookCookies = [cookies cookiesForURL:[NSURL URLWithString:@"http://login.facebook.com"]];
   
    for (NSHTTPCookie* cookie in [cookies cookies])
    {
        NSString* domainName = [cookie domain];
        NSRange domainRange = [domainName rangeOfString:@"facebook"];
        if(domainRange.length > 0)
        {
            [cookies deleteCookie:cookie];
        }
    }
    btnLogout.hidden = YES;
    btnLogin.hidden = NO;
}
#pragma mark - FBRequestDelegate Methods
- (void)request:(FBRequest *)request didReceiveResponse:(NSURLResponse *)response {
    NSLog(@"received response");
}
- (void)request:(FBRequest *)request didLoad:(id)result {
   
    if ([result isKindOfClass:[NSArray class]]) {
        result = [result objectAtIndex:0];
    }
   
     strUser = [appDelegate removeNull:[result objectForKey:@"username"]];
    [strUser retain];
   
    strEmail = [appDelegate removeNull:[result objectForKey:@"email"]];
    [strEmail retain];
   
    strFname = [appDelegate removeNull:[result objectForKey:@"first_name"]];
    [strFname retain];
   
    strLname = [appDelegate removeNull:[result objectForKey:@"last_name"]];
    [strLname retain];
      
     UserImage *objUserImg = (UserImage *)[NSEntityDescription
                                               insertNewObjectForEntityForName:@"UserImage"
                                               inManagedObjectContext:appDelegate.managedObjectContext];
   
    if ([strEmail isEqualToString:@""]) {
        strEmail = [appDelegate removeNull:[[result objectForKey:@"username"] stringByAppendingString:@"@facebook.com"]];
    }
     
    objUserImg.fbUsername = [result objectForKey:@"name"];
    objUserImg.fbId = [result objectForKey:@"id"];
   
   strUserImage = [[NSString alloc] initWithFormat:@"https://graph.facebook.com/%@/picture",[result objectForKey:@"id"]];
    [strUserImage retain];
    
    strFBId = [result objectForKey:@"id"];
    [strFBId retain];
   
    NSString *str = [strFBId stringByAppendingString:@"ThaAfterParty"];
    NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
    [userDefaults setObject:result forKey:@"FBUserDetail"];
    [userDefaults synchronize];
}


For Login :-

-(void)onClickLogin
{
    [self fbDidLogout];
    if (![[self facebook] isSessionValid]) {
        [[self facebook] authorize:self.permissions];
    }else {
        [facebook requestWithGraphPath:@"me" andDelegate:self];
    }
}

Cell Details :-

{
static NSString *cellIdentifier = @"CustomCell";
    CustomCellAllergy *cell = (CustomCellAllergy *)[tableView dequeueReusableCellWithIdentifier:cellIdentifier];
   
    if (cell == nil) {
        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"CustomCellAllergy" owner:self options:nil];
        for (id currentObject in topLevelObjects)
        {
            if ([currentObject isKindOfClass:[UITableViewCell class]]){
               
                cell =  (CustomCellAllergy *) currentObject;
                  break;
            }
        }
    }
    [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];

NSDictionary *result = [array objectAtIndex:indexPath.row];
    [cell setObjItem:result];
 return  cell;
}


#pragma mark - Share Methods
-(void)sharetoFB
{
    NSData *data=[NSData dataWithContentsOfURL:[NSURL URLWithString:[objUserImage valueForKey:@"imageurl"]]];
    UIImage *img=[UIImage imageWithData:data];
   
    NSDictionary* params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"Share on Facebook",  @"user_message_prompt",
                            @" App",@"text",
                            @" App", @"caption",
                            img,@"picture",
                            nil];
   
    [self.facebook requestWithMethodName:@"photos.upload"
                               andParams:[params mutableCopy]
                           andHttpMethod:@"POST"
                             andDelegate:self];
   
    [img release];
}

#pragma mark -
#pragma mark FlickrCellDelegate methods
- (void)loadContentForVisibleCells
{
    NSArray *cells = [tblView visibleCells];
    [cells retain];
    for (int i = 0; i < [cells count]; i++)
    {
        CommentCell *flickrCell = (CommentCell *)[cells objectAtIndex: i] ;
        [flickrCell loadImage];
    }
    [cells release];
}
- (void)flickrCellAnimationFinished:(CommentCell *)cell {
   
}
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;
{
    [self loadContentForVisibleCells];
}
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;
{
    if (!decelerate)
    {
        [self loadContentForVisibleCells];
    }
 
}