Cant get the custom class to get the blogs showing on the simulator ? am I implementing incorrectly ?Objective C

- (void)viewDidLoad
{
    [super viewDidLoad];




    NSURL *treehouse=[NSURL URLWithString:@"http://blog.teamtreehouse.com/api/get_recent_summary/"];

    NSData *jsondata=[NSData dataWithContentsOfURL:treehouse];

    NSError *error=nil;

    NSDictionary *json=[NSJSONSerialization JSONObjectWithData:jsondata options:0 error:&error];

    NSLog(@"%@",json);

    self.blogPostsA=[NSMutableArray array];

    NSArray *postArray=[json objectForKey:@"posts"];

    for (NSDictionary *postsClean in postArray) {
        blogpost *cleaner=[blogpost initWithBlogPost:[postsClean objectForKey:@"title"]];
        cleaner.author=[postsClean objectForKey:@"author"];
    }



   }

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{ static NSString *CellIdentifier=@"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];

    blogpost *blogPost=[self.blogPostsA objectAtIndex:indexPath.row];

    cell.textLabel.text= blogPost.title;
    cell.detailTextLabel.text= blogPost.author;
    // Configure the cell...

    return cell;
}