" In the latest Android Design in Action Roman Nurik (watch in YouTube) did a great roundup of UI design patterns that have not yet made their way to the official guidelines but are starting to appear in apps more frequently"

Android, a rich platform for application development, has an attractive set of user interface elements and data-management capabilities. Android also offers a healthy array of interfacing options. In this article, learn how to interact with Android's varied sensor options to monitor your environment. Sample code shows you how to record audio on an Android phone. Want to build your own baby monitor? Unlock your phone or a door with your own voice activation? Learn how to leverage the hardware capabilities of an Android-equipped device.