《Hello, Android》英文版：编程指南与深度解析

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"《Hello, Android》是一本专为英文水平较好的Android开发者设计的权威指南。该书以其卓越的写作质量、易读性和实用性获得了读者的高度评价。作者Ed Burnette以其独特的Pragmatic风格，全面介绍了Google的移动开发平台——Android，第二版更是精益求精。 Anthony Stevens，作为Pocket Journey的创始人兼CTO，以及Google Android竞赛的Top 20优胜者，赞赏这本书详尽地解析了Android的各种特性，确保了编程原则的正确应用，使得即使是初学者也能轻松上手。他指出，对于Android新手来说，这本书无疑极大地降低了学习的难度，使入门变得更加顺利。另一名读者Mark Murphy， CommonsWare的创始人，回忆起自己初次接触Android时的困惑，认为有了《Hello, Android》，开发者的新手之旅会更加有序。他特别提到了书中关于2D和3D图形处理的内容，认为这方面的深入讲解值得所有Android开发者珍藏在他们的技术库中。 Gabor Paller，OnRelay Ltd.的高级软件架构师，也对本书给予了肯定。他认为，《Hello, Android》有效地简化了复杂的技术内容，使得整个Android平台的学习路径清晰可见。他还强调，尽管市场上有许多产品使用特定的商标名称来区分，但Ed Burnette的这本书在众多产品中独树一帜，是Android开发者的必备参考书籍。《Hello, Android》不仅提供了丰富的实用知识，而且以用户友好的方式呈现，使得无论是经验丰富的开发者还是初出茅庐的开发者，都能从中受益匪浅，快速掌握并熟练运用Android开发技术。无论是想要深入理解Android的机制，还是寻求高效开发实践，这本书都是一个理想的起点。"

Chapter 1

Quick Start

Android combines the ubiquity of cell phones, the excitement of open

source software, and the corporate backing of Google and other Open

Handset Alliance members like Intel, TI, T-Mobile, and NTT DoCoMo.

The result is a mobile platf orm you can’t afford not to learn.

Luckily, getting started developing with Android is easy. You don’t even

need access to an Android phone—just a computer where you can

install the Android SDK and phone emulator.

In this chapter, I’ll show you how to get all the development tools

installed, and then we’ll jump right in and create a working applica-

tion: Android’s version of “Hello, World.”

1.1 Installing the Tools

The Android software development kit (SDK) w orks on Windows, Li nux,

and Mac OS X. The applications you create, of course, can be deployed

on any Android devices.

Before you start coding, you need to install Java, an IDE, and the

Android SDK.

Java 5.0+

First you need a copy of Java. All the Android development tool

s require

it, and programs you wri te will be using the Java language. JDK 5 or 6

is required.

It’s not enough to just have a runtime environment (JRE); you need

the full development kit. I recommend get ting the l atest Sun JDK 6.0

INSTALLING THE TOOLS 17

update from the Sun download site.

Mac OS X users should get the

latest version of Mac OS X and the JDK from the Apple w ebsite.

To verify you have the ri ght version, run t his command from your shell

window. Here’s what I get when I run it:

C:\> java -version

java version "1.6.0_14"

ava(TM) SE Runtime Environment (build 1.6.0_14-b08)

Java HotSpot(TM) Client VM (build 14.0-b16, mixed mode, sharing)

You should see something similar, with ver sion “1.6.somethi

ng” or later.

Eclipse

Next, you should install a Java development environment if yo

u don’t

have one already. I recommend Eclipse, because it’s free and because

it’s used and supported by the Google developers who created Andr oid.

If you don’t want to use Eclipse (there’s always one in every crowd),

support for other IDEs such as NetBeans and JetBrains IDEA is avail-

able f rom their respective communities. Or if you’re really old-school,

you can forgo an IDE entirely and just use th e command-line tools.

The minimum version of Eclipse is 3.3.1, but you should alw ays use

whatever is the most up-to-date production version. Note that you need

more than just the standard Eclipse SDK “classic” platform. Go to the

Eclipse downloads page,

and pick “Eclipse IDE for Java Developers.”

Follow the directions there for downloading, unpacking, and installing

Eclipse i nto a suitable location (like C:\Eclipse on Windows).

Android

Next, download the latest Android SDK from Google. The Andr oi

d down-

load page

has packages for Windows, Mac OS X, and Linux. After

downloading the package that’s right for you, unpack the .zip ﬁle to

a convenient directory (for example, C:\Google).

By default, the SDK will be expanded into a subdirectory like android-

sdk-windows-1.6_r1. This is your SDK install directory; make a note of the

full path so you can refer to it later.

1. http://java.sun.com/javase/downloads

2. S

ee http://d.android.com/guide/developing/tools/index.html for documentation on the

command-line tools.

3. http://www.eclipse.org/downloads

4. http://d.android.com/sdk

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《Hello, Android》英文版：编程指南与深度解析

Hello,android第3版英文版

Android版得HelloWorld

holle-world.zip_holle world_holleworld_holleworld 代码_world_你好世界代

Holle World

Holle.java

holleworld.txt

c++的holleworld

holle worde java

071 Mother Holle.doc

点亮一盏LED HOLLE WORD

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