A Toolbar

by Robert Van Slooten


Covers how to handle the size difference between the 3.5 and 4 inch iPhone and provides an example of a app with a toolbar.  It also explains how to use tags to handle multiple calls invoking the same action method.


Screens and Bars

by Robert Van Slooten


Covers the screen sizes of the various iOS devices and how they impact the UI layout, drawing and images . It also address the impact of the various bars: status, navigation, tab and tool on app design.