build.xml

<project default="package">
    <!-- Project properties -->
    <property name="version.num" value="1.0.0" />
    <property name="project" value="android-smart-image-view" />
    <property environment="env"/>

    <!-- Standard jar stuff -->
    <property name="jarfile" value="${project}-${version.num}.jar" />
    <property name="lib.dir" value="${env.ANDROID_HOME}/platforms/android-7/" />
    <property name="build.dir" value="./build"/>
    <property name="classes.dir"  value="${build.dir}/classes"/>
    <buildnumber file="build.num" />

    <!-- Set up classpath -->
    <path id="classpath">
        <fileset dir="${lib.dir}" includes="**/*.jar" />
    </path>

    <!-- Compile java files into classes -->
    <target name="compile">
        <mkdir dir="${build.dir}" />
        <mkdir dir="${classes.dir}" />
        <javac srcdir="." destdir="${classes.dir}" classpathref="classpath" />
    </target>

    <!-- Package a jar from compiled class files -->
    <target name="jar" depends="compile">
        <delete file="${jarfile}" />
        <delete file="MANIFEST.MF" />
        <manifest file="MANIFEST.MF">
            <attribute name="Built-By" value="${user.name}" />
            <attribute name="Implementation-Version" value="${version.num}-b${build.number}"/> 
        </manifest>

        <jar destfile="${jarfile}" basedir="build/classes" includes="**/*.class" manifest="MANIFEST.MF" />
    </target>

    <!-- Clean out the build files -->
    <target name="clean">
        <delete dir="build" />
        <delete>
            <fileset dir="." includes="${jarfile}"/>
            <fileset file="MANIFEST.MF"/>
        </delete>
    </target>

    <!-- Compile and package a jar -->
    <target name="package" depends="compile,jar" />
</project>