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iPhone Application Development for iOS 4: Visual QuickStart Guide by Duncan Campbell

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11. Multitasking

One of the most exciting new features in iOS4 is the introduction of multitasking. Previously, the iPhone was capable of running only one application at a time, but now your application can continue to run in the background when you close it and switch to another.

In this chapter, you’ll get a brief overview of some of the multitasking features of iOS 4 and how they work.

What Is Multitasking?

Quite simply, multitasking is the ability to do more than one thing at the same time. On your desktop computer, for example, you might be running an e-mail client and a Web browser while simultaneously listening to music and downloading a file over FTP. ...

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