ant打包完美流程

    <taskdef resource="net/sf/antcontrib/antcontrib.properties">  
        <classpath>  
            <pathelement location="${env.ANT_HOME}/lib/ant-contrib.jar" />  
        </classpath>  
    </taskdef> 
    
    <property name="channelname" 
            value="" /> 
    <property name="release.out.out.dir" value="20131219194545" /> 
    <property name="key" value="
        :xxx_adwx1,
        :xxx_adwx2,"/> 
    <target name="deploy">  
        <foreach target="modify_manifest" list="${key}" param="nameandchannel" delimiter=",">  
        </foreach>  
    </target>  
    
    <target name="modify_manifest">  
        <!-- 获取渠道名字 -->  
        <propertyregex override="true" property="channelname" input="${nameandchannel}" regexp=":(.*)" select="\1" />
        <replaceregexp flags="g" byline="false" encoding="UTF-8">  
            <regexp pattern=‘meta-data android:name="UMENG_CHANNEL" android:value="(.*)"‘ />  
            <substitution expression=‘meta-data android:name="UMENG_CHANNEL" android:value="${channelname}"‘ />  
            <fileset dir="" includes="AndroidManifest.xml" />  
        </replaceregexp>  
        <antcall target="release-name" />  
    </target>  
    <!-- version-tag: 1 -->
    
    <target name="release-name"
                depends="-set-release-mode-name, -release-obfuscation-check, -package, -post-package, -release-prompt-for-password, -release-nosign, -release-sign, -post-build"
                description="Builds the application in release mode.">
    </target>
    
    
    <target name="-set-release-mode-name" depends="-set-mode-check">
        <property name="out.packaged.file" location="${out.absolute.dir}/${ant.project.name}-release-unsigned.apk" />
        <property name="out.final.file" location="${out.absolute.dir}/qupai_v2.1.0_${channelname}.apk" />
        <property name="build.is.mode.set" value="true" />

        <!-- record the current build target -->
        <property name="build.target" value="release" />

        <property name="build.is.instrumented" value="false" />

        <!-- release mode is only valid if the manifest does not explicitly
             set debuggable to true. default is false. -->
        <xpath input="${manifest.abs.file}" expression="/manifest/application/@android:debuggable"
                output="build.is.packaging.debug" default="false"/>

        <!-- signing mode: release -->
        <property name="build.is.signing.debug" value="false" />

        <!-- Renderscript optimization level: aggressive -->
        <property name="renderscript.opt.level" value="${renderscript.release.opt.level}" />

        <if condition="${build.is.packaging.debug}">
            <then>
                <echo>*************************************************</echo>
                <echo>****  Android Manifest has debuggable=true   ****</echo>
                <echo>**** Doing DEBUG packaging with RELEASE keys ****</echo>
                <echo>*************************************************</echo>
            </then>
            <else>
                <!-- property only set in release mode.
                     Useful for if/unless attributes in target node
                     when using Ant before 1.8 -->
                <property name="build.is.mode.release" value="true"/>
            </else>
        </if>
    </target>
</project>