Understanding Radio-Style UIBarButtonItems: A Solution with UISegmentedControl

Centering a UISegmentedControl in a Toolbar at the Top of a UIPopoverController: A Step-by-Step Guide

Mastering iPhone Toolbar Layouts: A Guide to Managing Spaces Between Buttons

Adding Multiple Button Items to the Right Side of the Navigation Bar in iOS using UISegmentedControl

How to Remove a Right Bar Button Item from a Navigation Item in iOS