带有dexguard的Java库

我想混淆我的纯Java库，但我不确定如何在我的和build.xml文件中使用dexguard。谁能给我举个例子吗？我目前的代码如下：

<property file="build.properties"/> 

<taskdef resource="build.properties"
classpath="dexguard.jar" />

<target name="build">
    <antcall target="clean"/>
</target>   

<target name="clean">
    <delete dir="build"/>
    <antcall target="compile"/>
</target>

<target name="compile">
    <mkdir dir="build/classes"/>
    <javac srcdir="src" destdir="build/classes"/>
    <antcall target="jar"/>
</target>

<target name="jar" >
    <mkdir dir="build/jar"/>
    <jar destfile="build/jar/testlib.jar" basedir="build/classes">

    </jar>
    <antcall target="obfuscate"/>
</target>

<target name="obfuscate" 
description="Obfuscate compiled classes">
<dexguard>
      -libraryjars "dexguard.jar"
      -injars      build/jar/testlib.jar
      -outjars     build/jar/testlib_obf.jar
</dexguard>

<target name="run">
    <java jar="build/jar/testlib.jar" fork="true"/>
</target>

-libraryjars“dexguard.jar”
-injars build/jar/testlib.jar
-outjars build/jar/testlib_obf.jar

使用渐变

task obfDexguard(type: com.guardsquare.dexguard.gradle.DexGuardTask) {
    configuration 'dexguard.txt'

    injars  "build/jar/testlib.jar"
    outjars "build/jar/testlib_obf.jar"
}