Developers, build mobile Android apps using Android 4 The fast-growing popularity of Android tablets and smartphones creates a huge opportunities for developers. If youre an experienced developer, you can start creating robust mobile Android apps right away with this professional guide to Android 4 application development. Written by one of Googles lead Android developer advocates, this practical book walks you through a series of hands-on projects that clearly illustrate the features of all 2011 Android SDK 4 releases, as well as advanced functions such as OpenGL, cloud-to-device messaging, and more. Shows experienced developers how to create mobile applications for Android smartphones and tablets Covers two major Android 4 SDK releases, all updated APIs, and the latest changes to the Android platform Explains new or enhanced features such as drag and drop, enhanced multitouch support, new environmental sensor support, and major improvements to the animation framework Provides practical guidance on publishing and marketing your applications, best practices for user experience, and more This book helps you learn to master the design, lifecycle, and UI of an Android app through practical exercises, which you can then use as a basis for developing your own Android apps.