将custom_rules.xml转换为gradle版本

Question

我正在开发一个现有的项目，它很大程度上依赖于custom_rules.xml ant build中的大量配置。我在网上看了一下，但还没有明确详细地处理过这样的任务。我和Gradle一起玩过并尝试过一些建议的方法，但还没有任何工作。如果有人能指出我正确的方向，我将非常感激。

编辑：这是我需要使用Gradle重建的内容。我希望通过命令行摆脱这种做法，更不用说处理依赖性等等。

<?xml version="1.0" encoding="UTF-8"?>

             设置预编译                                                              

<!-- ========================================================================================= -->
<!-- Once update android SDK, please copy this target from build.xml under android SDK         -->
<!-- ========================================================================================= -->

<!-- Updates the pre-processed PNG cache -->
<target name="-crunch">
    <echo>SET CRUNCH</echo>
    <exec executable="${aapt}" taskName="crunch">
        <arg value="crunch" />
        <arg value="-v" />
        <arg value="-S" />
        <arg path="${resource.absolute.dir}" />
        <arg value="-C" />
        <arg path="${out.res.absolute.dir}" />
    </exec>
</target>

<!-- ========================================================================================= -->
<!-- Once update android SDK, please copy this target from build.xml under android SDK         -->
<!-- ========================================================================================= -->

<!-- Puts the project's resources into the output package file
     This actually can create multiple resource package in case
     Some custom apk with specific configuration have been
     declared in default.properties.
     -->
<target name="-package-resources" depends="-crunch">
    <!-- only package resources if *not* a library project -->
    <echo>MADE IT TO CRUNCH</echo>
    <do-only-if-not-library elseText="Library project: do not package resources..." >
        <aapt executable="${aapt}"
                command="package"
                versioncode="${version.code}"
                versionname="${version.name}"
                debug="${build.is.packaging.debug}"
                manifest="${out.manifest.abs.file}"
                assets="${asset.absolute.dir}"
                androidjar="${project.target.android.jar}"
                apkfolder="${out.absolute.dir}"
                nocrunch="${build.packaging.nocrunch}"
                resourcefilename="${resource.package.file.name}"
                resourcefilter="${aapt.resource.filter}"
                libraryResFolderPathRefid="project.library.res.folder.path"
                libraryPackagesRefid="project.library.packages"
                libraryRFileRefid="project.library.bin.r.file.path"
                previousBuildType="${build.last.target}"
                buildType="${build.target}"
                ignoreAssets="${aapt.ignore.assets}"
                manifestpackage="com.myproj">
            <res path="${out.res.absolute.dir}" />
            <res path="${resource.absolute.dir}" />
            <!-- <nocompress /> forces no compression on any files in assets or res/raw -->
            <!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
        </aapt>
    </do-only-if-not-library>
</target>

<target name="-post-package" >
    <property name="config_path" location="${cert.dir}" />
    <property name="out.pre.signlib.signed.file" location="${out.absolute.dir}/${ant.project.name}-release-pre-signlib-sign.apk" />
    <property name="out.signlib.signed.file" location="${out.absolute.dir}/${ant.project.name}-release-signlib-signed.apk" />
    <echo>sign with signlib certificate</echo>
    <touch file="res/raw/my.properties"/>
    <copy file="${out.packaged.file}" tofile="${out.pre.signlib.signed.file}"/>
    <java jar="apksigtool.jar" failonerror="true" fork="true">      
        <arg value="${out.packaged.file}"/>
        <arg value="private_key.der" />
        <arg value="my.crt" />
    </java>
    <copy file="${out.packaged.file}" tofile="${out.signlib.signed.file}"/>
</target>