Professional Android?4 Application Development?is a professional developer's guide to building mobile applications using the full Android?4 release scheduled for late 2011.? The author provides in-depth coverage of the Android SDK through a series of projects, each introducing a new Android platform feature and highlighting the techniques and best practices to get the most out of Android. Providing concise and compelling examples, Professional Android?4? lets developers quickly construct real-world mobile applications for Android phones and tablets running the latest version of Android. Some of the most important features introduced (or significantly revised for version 3.x) include: Support for tablet devices and new user interface components. Significant improvements to the animation framework. Introduction of drag & drop, enhanced clipboard, and enhanced multitouch support. The addition of a User Experience Best Practice chapter. Expansion of the chapter on sensors to include new environmental sensor support. Cloud to Device Messaging. Expansion of widgets to include new dynamic homescreen widget support. Introduction of Near Field Communication and SIP APIs. New chapter on publishing and marketing your applications. Introducing copy protection and the License Verification Server. The exercises begin as simple tasks that introduce readers to the anatomy, lifecycle, and UI metaphor of an Android application. Each step adds a particular piece of functionality to construct increasingly feature rich Android applications.