Reto Meier 目前是Google Android 團隊的一名Android 開發人員倡導者，幫助Android 開發人員創建最優秀的應用程序。Reto 是一位經驗豐富的軟件開發人員，擁有逾10 年的GUI 應用程序開發經驗。進入Google 之前，他曾在多種行業中工作過，包括海洋石油、天然氣以及金融業。

Reto 始終不渝地追求掌握新技術，從2007 年Android 發布之初Reto 就迷戀上瞭此項技術。在Reto 的個人網站Radioactive Yak(http://blog. radioactiveyak.com) 上可以瞭解Reto 的興趣和愛好。他還在Google+(http://profiles.google.com/reto.meier) 和Twitter(www.twitter.com/retomeier) 上分享各種信息。

技術編輯簡介

Dan Ulery 是一名軟件工程師，具有.NET、Java 和PHP 的開發經驗，並且十分熟悉軟件部署。他畢業於愛達荷大學，獲得瞭計算機科學學士學位，並且輔修瞭數學專業。

Developers, build mobile Android apps using Android 4 The fast-growing popularity of Android smartphones and tablets creates a huge opportunities for developers. If you're 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 Google's lead Android developer advocates, this practical book walks you through a series of hands-on projects that illustrate the features of the Android SDK. That includes all the new APIs introduced in Android 3 and 4, including building for tablets, using the Action Bar, Wi-Fi Direct, NFC Beam, and more. Shows experienced developers how to create mobile applications for Android smartphones and tablets Revised and expanded to cover all the Android SDK releases including Android 4.0 (Ice Cream Sandwich), including all updated APIs, and the latest changes to the Android platform. Explains new and enhanced features such as drag and drop, fragments, the action bar, enhanced multitouch support, new environmental sensor support, major improvements to the animation framework, and a range of new communications techniques including NFC and Wi-Fi direct. 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.