title: It's hard to click on Bar button Item
body: <p>I've created custom back bar button. And I added an UIview because I have to change position of it within bar.</p>
  
  <pre><code>UIImage *backButtonImage = [UIImage imageNamed:@"backBtnWhite"];
  
  _backButton = [UIButton buttonWithType:UIButtonTypeCustom];
  _backButton.exclusiveTouch = YES;
  [_backButton setImage:backButtonImage forState:UIControlStateNormal];
  [_backButton setImage:backButtonImage forState:UIControlStateHighlighted];
  [_backButton addTarget:self action:@selector(back) forControlEvents:UIControlEventTouchUpInside];
  _backButton.frame = CGRectMake(-4.0, 7.0, 40, 40);
  
  UIView * view = [[UIView alloc] initWithFrame:CGRectMake(-4.0, 7.0, backButtonImage.size.width, backButtonImage.size.height)];
  [view addSubview:_backButton];
  
  UIBarButtonItem* barButtonItem = [[UIBarButtonItem alloc] initWithCustomView:view];
  self.navigationItem.rightBarButtonItem = barButtonItem;
  </code></pre>
  
  <p>But after that I've added UIView it became difficult to click on it.
  I've tried to change button area, but it didn't give results.</p>