title: How can I add UISwitch(toggle switch) to UIToolBar without using InterfaceBuilder
body: <p>How can I add UISwitch(toggle switch) to UIToolBar without using InterfaceBuilder ?
  It is not a system item, so I could not use   </p>
  
  <pre><code>UIBarButtonItem *systemItem1 = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemRefresh
                                                                               target:self
                                                                               action:@selector(pressButton1:)];
  </code></pre>
  
  <p>How can I add the toggle switch  in same way ?<br>
  Thank You. </p>