title: UIView not showing
body: <p>I have a view controller this view controller has a UIView which was added in the builder. In viewdidload the UIView is hidden but when you click a button the UIView should appear but doesn't. I have linked the Outlets correctly and linked the UIView to the files owner but no luck. It was working until i modified something in the xib.</p>
  
  <pre><code>- (void)buttonRVClick:(id)sender{
  
  [UIView animateWithDuration:0.3 animations:^{
      viewRV.alpha = 1;
  }];
  self.viewRV.hidden = NO;
  
  [self.tableView2 reloadData];
  }
  </code></pre>