title: add image to UIBarButtonItem using initWithImage:(UIImage *)image
body: <p>I would like to know how to set an image to a UIBarButtonItem which will then be added to a UIToolbar, by using InitWithImage when creating a UIBarButtonItem.</p>
  
  <p>I am doing the following, but it creates a blank whitespace where the image should be on the UIToolbar</p>
  
  <pre><code>UIImage *image = [UIImage imageNamed:@"6.png"];
  
  UIBarButtonItem *systemItem1 = [[UIBarButtonItem alloc] initWithImage:image style:UIBarButtonItemStylePlain target:self action:@selector(pp:)];
  </code></pre>
  
  <p>Thank You!</p>