title: UITableView's subview not showing
body: <p>I have a UITableViewController subclass. When I try to add a subView its not showing.</p>
  
  <p>The subView is a UIImageView, I made a custom loading view (its shown when user is loading data from web).</p>
  
  <p>But when I add,</p>
  
  <pre><code>[self.tableView addSubview:spinner];
  [spinner startAnimating];
  </code></pre>
  
  <p>The spinner is not showing. What am I missing or I did wrong?</p>
  
  <p><strong>EDIT</strong></p>
  
  <p>Code of spinner</p>
  
  <pre><code>UIImageView *spinner = [[UIImageView alloc]init];
  spinner.animationImages = [NSArray arrayWithObjects:
                            [UIImage imageNamed:@"spin8.png"],
                            [UIImage imageNamed:@"spin7.png"],
                            [UIImage imageNamed:@"spin6.png"],
                            [UIImage imageNamed:@"spin5.png"],
                            [UIImage imageNamed:@"spin4.png"],
                            [UIImage imageNamed:@"spin3.png"],
                            [UIImage imageNamed:@"spin2.png"],
                            [UIImage imageNamed:@"spin1.png"],
                            nil];
  </code></pre>