CI: Execute Static Analysis through Ant on Jenkins

custom_rules.xml file

<project name="AndroidSampleCode" default="help">
    
    <!-- For findbugs -->
    <property name="findbugs.home" value="findbugs-3.0.0" />
    <taskdef name="findbugs" classname="edu.umd.cs.findbugs.anttask.FindBugsTask">
        <classpath>
            <fileset dir="${findbugs.home}/lib" includes="**/*jar" />
    </classpath>
    </taskdef>
    <target name="-findbugs" if="findbugs.home">
        <echo level="info">Start findbugs...</echo>
        <findbugs home="${findbugs.home}" output="xml" outputFile="findbugs.xml" excludeFilter="findbugs-exclude.xml">
            <auxClasspath path="${project.target.android.jar}" />
            <class location="${out.dir}" />
        </findbugs>
    </target>
    
    <taskdef resource="checkstyletask.properties" classpath="checkstyle-5.7/checkstyle-5.7-all.jar" />
    <target name="-checkstyle" description="Generates a report of code convention violations.">
        <checkstyle config="checkstyle-5.7/sun_checks.xml" failureProperty="checkstyle.failure" failOnViolation="false">
            <formatter type="xml" tofile="checkstyle_report.xml" />
            <fileset dir="src" includes="**/*.java" />
        </checkstyle>
    </target>
    
    <!--<path id="pmd.classpath">
        <pathelement location="${build}"/>
        <fileset dir="pmd-bin-5.2.3/lib/">
            <include name="*.jar"/>
        </fileset>
    </path>
    
    <taskdef name="pmd" classname="net.sourceforge.pmd.ant.PMDTask" classpathref="pmd.classpath"/>
    <target name="pmd">
        <pmd rulesetfiles="pmd-bin-5.2.3/rulesets.xml">
            <formatter type="xml" toFile="pmd_report.xml"/>
            <fileset dir="${src.dir}">
                <include name="**/*.java"/>
            </fileset>
        </pmd>
    </target> -->

    <target name="-post-build" depends="-findbugs,-checkstyle" /> 
</project>