《创建你的第一个应用》
Welcome to Android application development!
欢迎加入Android应用程序开发！
This class teaches you how to build your first Android app. You’ll learn how to create an Android project and run a debuggable version of the app. You'll also learn some fundamentals of Android app design, including how to build a simple user interface and handle user input.
本课程主要讲怎样创建你的第一个应用程序。你会学到怎样创建一个Android项目，怎样编译你的程序的一个可调式版本。你还会学到一些Android应用设计的基础：包括一个简单的用户界面和一个简单的用户输入交互。
Before you start this class, be sure you have your development environment set up. You need to:
在你开始学习本课程之前，请确定你已经把开发环境创建好了。你需要：
- Download the Android SDK.
- Install the ADT plugin for Eclipse (if you’ll use the Eclipse IDE).
- Download the latest SDK tools and platforms using the SDK Manager.
- 下载 Android SDK。
- 安装 Eclipse IDE 的ADT插件。
- 用SDK Manager 下载最新版本的SDK平台和SDK工具。
If you haven't already done these tasks, start by downloading the Android SDK and following the install steps. Once you've finished the setup, you're ready to begin this class.
如果你还没有完成以上步骤，请开始下载Android SDK并进行后续步骤，一旦完成了这些步骤，你就可以开始本课程了。
This class uses a tutorial format that incrementally builds a small Android app that teaches you some fundamental concepts about Android development, so it's important that you follow each step.
本课程是以教程形式通过一步步创建一个小应用来教你一些Android开发的基本概念，所以以下的步骤对你十分重要。