New Android(安卓)Project In Eclipse with SDK 4.0

ADK 4.0后使用Eclipse新建工程后的工程文件。

.project

项目文件，项目的结构都在其中定义。

<?xml version="1.0" encoding="UTF-8"?><projectDescription><name>XAlbum</name><comment></comment><projects></projects><buildSpec><buildCommand><name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name><arguments></arguments></buildCommand><buildCommand><name>com.android.ide.eclipse.adt.PreCompilerBuilder</name><arguments></arguments></buildCommand><buildCommand><name>org.eclipse.jdt.core.javabuilder</name><arguments></arguments></buildCommand><buildCommand><name>com.android.ide.eclipse.adt.ApkBuilder</name><arguments></arguments></buildCommand></buildSpec><natures><nature>com.android.ide.eclipse.adt.AndroidNature</nature><nature>org.eclipse.jdt.core.javanature</nature></natures></projectDescription>

1.工程名字<name></name>

2.工程注释描述<comment></comment>

3.运行时需要的额外的Eclipse插件<natures></natures>，以及其具体的加载方式<buildSpec></buildSpec>　　

.classpath

定义工程项目在编译时使用的$CLASSPATH

<?xml version="1.0" encoding="UTF-8"?><classpath><classpathentry kind="src" path="src"/><classpathentry kind="src" path="gen"/><classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/><classpathentry kind="con" path="com.android.ide.eclipse.adt.LIBRARIES"/><classpathentry kind="output" path="bin/classes"/></classpath>

1.源文件(.java)的具体位置(kind="src")

2.工程运行的系统环境(kind="con")

3.项目的输出目录(kind="output")

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.arcsoft.xalbum"    android:versionCode="1"    android:versionName="1.0" >    <uses-sdk        android:minSdkVersion="8"        android:targetSdkVersion="15" />    <application        android:icon="@drawable/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".MainActivity"            android:label="@string/title_activity_main" >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>

描述项目的版本以及所使用的ADK信息，说明activity,service,provider的信息，已经定义应用的权限。

proguard-project.txt

# To enable ProGuard in your project, edit project.properties# to define the proguard.config property as described in that file.## Add project specific ProGuard rules here.# By default, the flags in this file are appended to flags specified# in ${sdk.dir}/tools/proguard/proguard-android.txt# You can edit the include path and order by changing the ProGuard# include property in project.properties.## For more details, see#   http://developer.android.com/guide/developing/tools/proguard.html# Add any project specific keep options here:# If your project uses WebView with JS, uncomment the following# and specify the fully qualified class name to the JavaScript interface# class:#-keepclassmembers class fqcn.of.javascript.interface.for.webview {#   public *;#}

Android提供的防止应用apk被逆向工程的机制，通过对代码进行扰乱压缩实现，即防止破解。(只在Release启动)

具体参见http://developer.android.com/guide/developing/tools/proguard.html

project.properties

# This file is automatically generated by Android Tools.# Do not modify this file -- YOUR CHANGES WILL BE ERASED!## This file must be checked in Version Control Systems.## To customize properties used by the Ant build system edit# "ant.properties", and override values to adapt the script to your# project structure.## To enable ProGuard to shrink and obfuscate your code, uncomment this (available properties: sdk.dir, user.home):#proguard.config=${sdk.dir}/tools/proguard/proguard-android.txt:proguard-project.txt# Project target.target=android-16

另外，在4.0后的工程中增加了一个\libs\android-support-v4.jar文件，这个文件的作用是，当工程中使用了后面新版本的ADK中提供的类的时候，而需要在旧版本的系统上运行的时候，就可以派上用场。因为这个jar中包含了这些新类的定义和声明，所以就可以通过额外库的方式在旧版本系统被应用程序加载而使用。具体参见http://developer.android.com/tools/extras/support-library.html

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