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Sams Teach Yourself iPhone Application Development in 24 Hours by John Ray, Sean Johnson

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Hour 18. Extending the Touch Interface

What You’ll Learn in This Hour:

The multitouch gesture architecture

How to detect taps

How to detect swipes

How to detect pinches

How to use the built-in shake gesture

The buzz around the iPhone is now focused on the App Store and the innovation in third-party applications. When the iPhone was originally launched, however, there was no iPhone SDK for third-party developers, and the majority of the buzz was around the high-definition (163 pixels per inch) multitouch screen. The screen was unique at the time in mass-market consumer electronics because it could detect multiple fingers at once.

A multitouch screen allows applications to use a wide variety of natural finger gestures for ...

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