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Xcode 4 iOS Development by Steven F. Daniel

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Chapter 7. Exploring the MultiTouch Interface

The Apple iOS device's primary interface with which you communicate is its large Multi-Touch display. Since there is no physical keyboard attached, everything is done via the screen to allow you to interact with your applications in a more natural way. Any object can be moved around the screen, zoomed in and out, and scrolled up and down using simple gestures.

In this chapter, we will see how easy it is to incorporate both single-touch and multi-touch support into our applications, to handle device taps, swipes, pinches, as well as responding to shake motions, before finally learning about the accelerometer and the gyroscope, and how to handle the situation when your iOS device orientation has changed. ...

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