android_rules.xml

<?xml version="1.0" encoding="UTF-8"?>
<project name="android_rules" default="debug">

	<!--
        This rules file is meant to be imported by the custom Ant task:
            com.android.ant.AndroidInitTask

        The following properties are put in place by the importing task:
            android-jar, android-aidl, aapt, aidl, and dx

        Additionnaly, the task sets up the following classpath reference:
            android.target.classpath
        This is used by the compiler task as the boot classpath.
    -->

	<!-- Custom tasks -->
	<taskdef name="aaptexec" classname="com.android.ant.AaptExecLoopTask" classpathref="android.antlibs" />

	<taskdef name="apkbuilder" classname="com.android.ant.ApkBuilderTask" classpathref="android.antlibs" />

	<!-- Properties -->

	<property name="android-tools" value="${sdk-location}/tools" />

	<!-- Input directories -->
	<property name="source-folder" value="src" />
	<property name="gen-folder" value="gen" />
	<property name="resource-folder" value="res" />
	<property name="asset-folder" value="assets" />
	<property name="source-location" value="${basedir}/${source-folder}" />

	<!-- folder for the 3rd party java libraries -->
	<property name="external-libs-folder" value="libs" />

	<!-- folder for the native libraries -->
	<property name="native-libs-folder" value="libs" />

	<!-- Output directories -->
	<property name="gen-folder" value="gen" />
	<property name="out-folder" value="bin" />
	<property name="out-classes" value="${out-folder}/classes" />
	<property name="out-classes-location" value="${basedir}/${out-classes}" />
	<!-- out folders for a parent project if this project is an instrumentation project -->
	<property name="main-out-folder" value="../${out-folder}" />
	<property name="main-out-classes" value="${main-out-folder}/classes" />

	<!-- Intermediate files -->
	<property name="dex-file" value="classes.dex" />
	<property name="intermediate-dex" value="${out-folder}/${dex-file}" />
	<!-- dx does not properly support incorrect / or \ based on the platform
         and Ant cannot convert them because the parameter is not a valid path.
         Because of this we have to compute different paths depending on the platform. -->
	<condition property="intermediate-dex-location" value="${basedir}\${intermediate-dex}" else="${basedir}/${intermediate-dex}">
		<os family="windows" />
	</condition>

	<!-- The final package file to generate -->
	<property name="out-debug-package" value="${out-folder}/${ant.project.name}-debug.apk" />

	<!-- Tools -->
	<condition property="exe" value=".exe" else="">
		<os family="windows" />
	</condition>
	<property name="adb" value="${android-tools}/adb${exe}" />

	<property name="scala.home" value="/usr/local/scala-2.7.5.final/" />
	<property name="scala-android.jar" value="${scala.home}/lib/scala-android.jar" />
	<property name="scala-library.jar" value="${scala.home}/lib/scala-library.jar" />
	<!-- create scala ant tasks -->
	<taskdef resource="scala/tools/ant/antlib.xml">
		<classpath>
			<pathelement location="${scala.home}/lib/scala-compiler.jar" />
			<pathelement location="${scala-library.jar}" />
		</classpath>
	</taskdef>

	<property name="proguard.out.jar" value="${out-folder}/classes.opt.jar" />
	<path id="proguard.classpath">
		<pathelement location="/usr/share/java/ant-proguard.jar" />
		<pathelement location="/usr/share/java/proguard.jar" />
	</path>
	<!-- create proguard taks -->
	<taskdef resource="proguard/ant/task.properties">
		<classpath>
			<path refid="proguard.classpath" />
		</classpath>
	</taskdef>

	<!-- rules -->

	<target name="clean">
		<delete quiet="true" verbose="false">
			<fileset dir="${out-classes}" />
			<fileset dir="${gen-folder}" />
		</delete>
	</target>

	<!-- Create the output directories if they don't exist yet. -->
	<target name="dirs">
		<echo>Creating output directories if needed...</echo>
		<mkdir dir="${resource-folder}" />
		<mkdir dir="${external-libs-folder}" />
		<mkdir dir="${gen-folder}" />
		<mkdir dir="${out-folder}" />
		<mkdir dir="${out-classes}" />
	</target>

	<!-- Generate the R.java file for this project's resources. -->
	<target name="resource-src" depends="dirs">
		<echo>Generating R.java / Manifest.java from the resources...</echo>
		<exec executable="${aapt}" failonerror="true">
			<arg value="package" />
			<arg value="-m" />
			<arg value="-J" />
			<arg path="${gen-folder}" />
			<arg value="-M" />
			<arg path="AndroidManifest.xml" />
			<arg value="-S" />
			<arg path="${resource-folder}" />
			<arg value="-I" />
			<arg path="${android-jar}" />
		</exec>
	</target>

	<!-- Generate java classes from .aidl files. -->
	<target name="aidl" depends="dirs">
		<echo>Compiling aidl files into Java classes...</echo>
		<apply executable="${aidl}" failonerror="true">
			<arg value="-p${android-aidl}" />
			<arg value="-I${source-folder}" />
			<arg value="-o${gen-folder}" />
			<fileset dir="${source-folder}">
				<include name="**/*.aidl" />
			</fileset>
		</apply>
	</target>

	<!-- Compile this project's .java files into .class files. -->
	<target name="compile" depends="resource-src, aidl">
		<javac encoding="ascii" target="1.5" debug="true" extdirs="" destdir="${out-classes}" bootclasspathref="android.target.classpath">
			<src path="${source-folder}" />
			<src path="${gen-folder}" />
			<classpath>
				<fileset dir="${external-libs-folder}" includes="*.jar" />
				<pathelement path="${main-out-classes}" />
			</classpath>
		</javac>
		<!-- build scala files -->
		<scalac 
			encoding="ascii"
			target="jvm-1.5"
			addparams="-g:vars"
			srcdir="${source-folder}"
			extdirs="" 
			destdir="${out-classes}" 
			bootclasspathref="android.target.classpath">
			<include name="**/*.scala" />
			<classpath>
				<fileset dir="${external-libs-folder}" includes="*.jar" />
				<pathelement path="${main-out-classes}" />
				<pathelement path="${scala-android.jar}" />
				<pathelement path="${scala-library.jar}" />
			</classpath>
		</scalac>
	</target>

	<!-- Convert this project's .class files into .dex files. -->
	<target name="dex" depends="proguard">
		<echo>Converting compiled files and external libraries into ${out-folder}/${dex-file}...</echo>
		<apply executable="${dx}" failonerror="true" parallel="true">
			<arg value="-JXmx512M" />
			<arg value="--dex" />
			<arg value="--output=${intermediate-dex-location}" />
			<!--
			<arg path="${out-classes-location}" />
			<fileset file="${scala-android.jar}"/>
			-->
			<fileset file="${proguard.out.jar}" />
			<fileset dir="${external-libs-folder}" includes="*.jar" />
		</apply>
	</target>

	<!-- optimize using proguard -->
	<target name="proguard" depends="compile">
		<proguard warn="false" optimize="false" obfuscate="false">
			<!-- 
			-injars ${out-classes-location}:${external-libs-folder}/*.jar:${scala-android.jar}(!META-INF/MANIFEST.MF,!library.properties):${scala-library.jar}(!META-INF/MANIFEST.MF,!library.properties)
			-outjars ${proguard.out.jar}
			-->
			<injar>
				<pathelement location="${out-classes-location}" />
			</injar>
			<injar filter="!META-INF/MANIFEST.MF,!*.properties">
				<pathelement location="${scala-library.jar}" />
			</injar>
			<injar>
				<fileset dir="${external-libs-folder}" includes="*.jar" />
			</injar>
			<outjar>
				<pathelement location="${proguard.out.jar}" />
			</outjar>
	    		-libraryjars ${android-jar}
	    		-keep public class * extends android.app.Activity
	  	</proguard>
	</target>


	<!-- Put 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">
		<echo>Packaging resources</echo>
		<aaptexec executable="${aapt}" command="package" manifest="AndroidManifest.xml" resources="${resource-folder}" assets="${asset-folder}" androidjar="${android-jar}" outfolder="${out-folder}" basename="${ant.project.name}" />
	</target>

	<!-- Package the application and sign it with a debug key.
         This is the default target when building. It is used for debug. -->
	<target name="debug" depends="dex, package-resources">
		<apkbuilder outfolder="${out-folder}" basename="${ant.project.name}" signed="true" verbose="false">
			<file path="${intermediate-dex}" />
			<sourcefolder path="${source-folder}" />
			<jarfolder path="${external-libs-folder}" />
			<nativefolder path="${native-libs-folder}" />
		</apkbuilder>
	</target>

	<!-- Package the application without signing it.
         This allows for the application to be signed later with an official publishing key. -->
	<target name="release" depends="dex, package-resources">
		<apkbuilder outfolder="${out-folder}" basename="${ant.project.name}" signed="false" verbose="false">
			<file path="${intermediate-dex}" />
			<sourcefolder path="${source-folder}" />
			<jarfolder path="${external-libs-folder}" />
			<nativefolder path="${native-libs-folder}" />
		</apkbuilder>
		<echo>All generated packages need to be signed with jarsigner before they are published.</echo>
	</target>

	<!-- Install the package on the default emulator -->
	<target name="install" depends="debug">
		<echo>Installing ${out-debug-package} onto default emulator...</echo>
		<exec executable="${adb}" failonerror="true">
			<arg value="install" />
			<arg path="${out-debug-package}" />
		</exec>
	</target>

	<target name="reinstall" depends="debug">
		<echo>Installing ${out-debug-package} onto default emulator...</echo>
		<exec executable="${adb}" failonerror="true">
			<arg value="install" />
			<arg value="-r" />
			<arg path="${out-debug-package}" />
		</exec>
	</target>

	<!-- Uinstall the package from the default emulator -->
	<target name="uninstall">
		<echo>Uninstalling ${application-package} from the default emulator...</echo>
		<exec executable="${adb}" failonerror="true">
			<arg value="uninstall" />
			<arg path="${application-package}" />
		</exec>
	</target>

	<target name="help">
		<!-- displays starts at col 13
              |13                                                              80| -->
		<echo>Android Ant Build. Available targets:</echo>
		<echo>   help:      Displays this help.</echo>
		<echo>   debug:     Builds the application and sign it with a debug key.</echo>
		<echo>   release:   Builds the application. The generated apk file must be</echo>
		<echo>              signed before it is published.</echo>
		<echo>   install:   Installs the debug package onto a running emulator or</echo>
		<echo>              device. This can only be used if the application has </echo>
		<echo>              not yet been installed.</echo>
		<echo>   reinstall: Installs the debug package on a running emulator or</echo>
		<echo>              device that already has the application.</echo>
		<echo>              The signatures must match.</echo>
		<echo>   uninstall: uninstall the application from a running emulator or</echo>
		<echo>              device.</echo>
	</target>
</project>