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Pro Android 3 by Sayed Y. Hashimi, Dave MacLean, Satya Komatineni

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Chapter 22. Home Screen Widgets

In this chapter, we will cover Android's home screen widgets in detail. Home screen widgets, like live folders (covered in Chapter 21), offer one more way of presenting frequently changing information on the home screen of Android. From a high-level perspective, home screen widgets are disconnected views (albeit populated with data) that are displayed on the home screen. The data content of these views is updated at regular intervals by background processes.

For example, an e-mail home screen widget might alert you to the number of outstanding e-mails to be read. The widget may just show you the number of e-mails and not the messages themselves. Clicking the e-mail count may then take you to the activity that displays ...

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