Information Technology Reference
In-Depth Information
You can see from the illustration that formatting is haphazard. Given the extra space, it's usual for iPad apps to
have more features than their iPhone equivalents. A minimal UI that works well on the iPhone can look comical
on the iPad, unless you redesign it.
Note that if you run in the iPhone Simulator, the original app loads as before. Only the main window has
changed. The view controller remains the same, but you can now extend it with iPad-specific features.
Summary
This chapter introduced the File's Owner and First Responder placeholder objects and explained their role in UI
design and event management. It demonstrated how to customize objects by subclassing them and how to as-
sign subclasses to visible objects in IB. It showed how to create simple static background images in IB with flat
colors or image files and introduced IB's localization features, with support for non-English nib files. Finally it
explored some more advanced applications of IB, including universal iPhone/iPad development.
