Welcome to the updated version of this Visual QuickStart Guide for iPhone application development.

A lot has happened since the last version of this book was published: In only one short year, not only have we seen the introduction of the revolutionary iPad, but we’ve also seen the all-new iPhone 4, with its gorgeous high-resolution display and powerful new hardware capabilities.

The tools for iPhone development have also had a major upgrade. iOS 4 brings with it many new application programming interfaces (APIs) that give developers even more access to the iPhone’s underlying hardware, as well as adds exciting new capabilities, such as multitasking and high-definition (HD) video recording and editing.

At the time of this writing, ...

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