Change default position of navigation bar button item

NavigationBarButtonItemWithOffset

- (void)createBarButtonItemForNavigationItem:(UINavigationItem *)navigationItem 
{
    UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:<@"icon">] style:UIBarButtonItemStylePlain target:self action:@selector(<selector:>)];
    UIBarButtonItem *negativeSpacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil];
    negativeSpacer.width = <-offset>;
    navigationItem.leftBarButtonItems = @[ negativeSpacer, buttonItem ];
}