Sams Teach Yourself iOS 6 Application Development in 24 Hours, Fourth Edition

Hour 17. Using Advanced Touches and Gestures

What You’ll Learn in This Hour:

• The multitouch gesture-recognition architecture

• How to detect taps

• How to detect swipes

• How to detect pinches

• How to detect rotations

• How to use the built-in shake gesture

A multitouch screen allows applications to use a wide variety of natural finger gestures for operations that would otherwise be hidden behind layers of menus, buttons, and text. From the very first time you use a pinch to zoom in and out on a photo, map, or web page, you realize that’s exactly the right interface for zooming. Nothing is more human than manipulating the environment with your fingers.

iOS provides advanced gesture-recognition capabilities that you can easily implement within ...