在Windows下用ant编译Android应用生成apk安装包

一般情况下，我们用Eclipse开发Android应用，几乎从来没有考虑用命令行来编译，因为Eclipse太强大了以至于Android开发成为了傻瓜。

今天，我决心来尝试一下用ant来编译Android应用，ant编译Android应用其实就是调用多个Android SDK提供的多个编译工具，最后编译打包签名，形成apk文件。

我的开发环境是Windows XP，Java是1.6的，Eclipse是adt自带的那个。下面是用ant来编译Android应用的build.xml的内容。

<project default="main" basedir=".">     <property name="apk-name" value="product" />    <property name="apk-version" value="latest" />    <property name="apk-market" value="dev" />    <property name="basedir" value="." />     <property name="android-jar" value="E:/adt-bundle-windows-x86-20130219/sdk/platforms/android-8/android.jar" />    <!-- <property name="android-jar" value="/usr/lib/android-sdk/platforms/android-10/android.jar" /> -->     <target name="init">        <echo>start initing ... </echo>         <mkdir dir="out" />        <delete>            <fileset dir="out"></fileset>        </delete>                 <mkdir dir="gen" />        <delete>            <fileset dir="gen"></fileset>        </delete>                 <mkdir dir="bin/classes" />        <delete>            <fileset dir="bin/classes"></fileset>        </delete>                 <mkdir dir="build/${apk-version}" />         <echo>finish initing. </echo>    </target>     <target name="main" depends="init">        <echo>generating R.java for project to dir gen (using aapt) ... </echo>        <exec executable="aapt">            <arg value="package" />            <arg value="-m" />            <arg value="-J" />            <arg value="gen" />            <arg value="-M" />            <arg value="AndroidManifest.xml" />            <arg value="-S" />            <arg value="res" />            <arg value="-S" />            <arg value="${basedir}/res" />            <arg value="-I" />            <arg value="${android-jar}" />            <arg value="--auto-add-overlay" />        </exec>         <echo>generating R.java for library to dir gen (using aapt) ... </echo>        <exec executable="aapt">            <arg value="package" />            <arg value="-m" />            <arg value="--non-constant-id" />            <arg value="--auto-add-overlay" />            <arg value="-J" />            <arg value="gen" />            <arg value="-M" />            <arg value="${basedir}/AndroidManifest.xml" />            <arg value="-S" />            <arg value="res" />            <arg value="-S" />            <arg value="${basedir}/res" />            <arg value="-I" />            <arg value="${android-jar}" />        </exec>         <path id="project.libs">            <fileset dir="libs">                <include name="*.jar" />            </fileset>        </path>        <echo>compiling java files to class files (include R.java, library and the third-party jars) ... </echo>        <javac destdir="bin/classes" bootclasspath="${android-jar}">            <src path="${basedir}/src" />            <src path="src" />            <src path="gen" />            <classpath refid="project.libs" />        </javac>         <echo>packaging class files (include the third-party jars) to calsses.dex ... </echo>        <!-- <exec executable="dx"> -->        <exec executable="dx.bat">            <arg value="--dex" />            <arg value="--output=${basedir}/out/classes.dex" />            <arg value="${basedir}/bin/classes" />            <arg value="${basedir}/libs" />        </exec>         <echo>packaging resource (include res, assets, AndroidManifest.xml, etc.) to res.zip ... </echo>        <exec executable="aapt">            <arg value="package" />            <arg value="-f" />            <arg value="-M" />            <arg value="AndroidManifest.xml" />            <arg value="-S" />            <arg value="res" />            <arg value="-S" />            <arg value="${basedir}/res" />            <arg value="-A" />            <arg value="assets" />            <arg value="-I" />            <arg value="${android-jar}" />            <arg value="-F" />            <arg value="out/res.zip" />            <arg value="--auto-add-overlay" />        </exec>         <echo>building unsigned.apk ... </echo>        <!-- <exec executable="apkbuilder"> -->        <exec executable="apkbuilder.bat">            <arg value="${basedir}/out/unsigned.apk" />            <arg value="-u" />            <arg value="-z" />            <arg value="${basedir}/out/res.zip" />            <arg value="-f" />            <arg value="${basedir}/out/classes.dex" />        </exec>         <echo>signing the unsigned apk to final product apk ... </echo>        <exec executable="jarsigner">            <arg value="-keystore" />            <arg value=".keystore" />            <arg value="-storepass" />            <arg value="hello123456" />            <arg value="-keypass" />            <arg value="hello123456" />            <arg value="-signedjar" />            <arg value="${basedir}/build/${apk-version}/${apk-name}_${apk-version}_${apk-market}.apk" />            <arg value="${basedir}/out/unsigned.apk" />            <arg value="zhy" />        </exec>         <echo>done.</echo>    </target></project>

上面的build.xml文件在我的机器上测试通过了。注意，我加粗的部分就是要稍作修改的部分，你应该懂的。

要注意的是，在执行之前要用 keytool -genkey -alias yourname 来生成一个密钥。并将.keystore文件复制到目录下，或者指定具体的位置。否则，最后一步不能成功的话，就无法生成在手机上可安装使用的apk文件了。

E:\workspace\Hello8>antBuildfile: E:\workspace\Hello8\build.xmlinit:     [echo] start initing ...    [mkdir] Created dir: E:\workspace\Hello8\out    [mkdir] Created dir: E:\workspace\Hello8\gen    [mkdir] Created dir: E:\workspace\Hello8\bin\classes    [mkdir] Created dir: E:\workspace\Hello8\build\latest     [echo] finish initing.main:     [echo] generating R.java for project to dir gen (using aapt) ...     [echo] generating R.java for library to dir gen (using aapt) ...     [echo] compiling java files to class files (include R.java, library and the third-party jars) ...    [javac] E:\workspace\Hello8\build.xml:76: warning: 'includeantruntime' was not set, defaulting to build.sysclasspath=last; set to false for repeatable builds    [javac] Compiling 2 source files to E:\workspace\Hello8\bin\classes     [echo] packaging class files (include the third-party jars) to calsses.dex...     [echo] packaging resource (include res, assets, AndroidManifest.xml, etc.)to res.zip ...     [echo] building unsigned.apk ...     [exec]     [exec] THIS TOOL IS DEPRECATED. See --help for more information.     [exec]     [echo] signing the unsigned apk to final product apk ...     [exec]     [exec] 警告：     [exec] 签名者证书将在六个月内过期。     [echo] done.BUILD SUCCESSFULTotal time: 9 secondsE:\workspace\Hello8>

因为我在用keytool -genkey 的时候没有指定有效期，默认就是六个月。这在实际使用的时候，肯定是要指定时长的，比如10年20年之类的。

之所以，我能够这么快就能成功的使用ant编译android应用，全都是下面这篇文章的功能（不过我修改了一下build.xml才运行通过）：

Android学习系列(31)--App自动化之使用Ant编译项目多渠道打包

http://www.cnblogs.com/qianxudetianxia/archive/2012/07/04/2573687.html#commentform

在此，对该文的作者表示感谢和敬意！