Importing ZXing - missing core/build.xml - ant

Question

I'm trying to import Google's ZXing.
I downloaded the latest release from https://code.google.com/p/zxing/downloads/detail?name=ZXing-2.2.zip&can=2&q=
From the cmd prompt I navigated to the root directory of the downloaded zxing and tried to execute
ant -f core\build.xml
PROBLEM :
Buildfile : build.xml does not exist!
Build failed
My zxing-2.2/core file contains :
src
test
pom.xml
Questions:
How to build a file that is missing?
Is it a problem from the zxing-2.2.jar I downloaded?

Answer 1

This problem happened to me too, I solved it by creating the build.xml file inside core folder
change name="whatever you want" in the second line, here it's "project"
code of build.xml:
<?xml version="1.0" encoding="utf-8" ?>
<project name="project" default="jar" basedir=".">
<target name="compile" description="Compile source">
<mkdir dir="bin" />
<javac srcdir="src" includes="**" destdir="bin"/>
<copy todir="bin">
<fileset dir="src" />
</copy>
</target>
<target name="jar" description="Package into JAR" depends="compile">
<jar destfile="project.jar" basedir="bin" compress="true" />
</target>
</project>
Run the build command again and see if it works.

Answer 2

Please do consider that you can always use the pom.xml to achieve the same. This is the method prescribed in the official zxing documentation
https://code.google.com/p/zxing/wiki/GettingStarted
The commands I have used are as follows:
cd core
mvn -DskipTests -Dgpg.skip=true install
That's it, you are done. Obviously, maven is to be installed before using the code

Answer 3

I tried the accepted answer, but unfortunately it not worked. Actually the jar was built successfully, but it was not built into the apk when Eclipse built the project. This was when i referenced ZXing as a library project. I managed to write an ant script which works, so i share it here:
<?xml version="1.0" encoding="utf-8" ?>
<project name="core" basedir="." default="dist" >
<property name="dist.dir" value="dist" />
<property name="src.dir" value="src" />
<property name="build.dir" value="bin" />
<target name="dist" depends="clean, package" />
<target name="clean" >
<delete dir="${build.dir}" />
</target>
<target name="init" >
<mkdir dir="${build.dir}" />
</target>
<target name="compile" >
<javac debug="off" destdir="${build.dir}" source="1.6" srcdir="${src.dir}" target="1.6" />
</target>
<target name="package" depends="init, compile" >
<jar basedir="${build.dir}" destfile="${dist.dir}/core.jar" />
</target>
</project>

Answer 4

If you just need the core.jar from zxing, you can skip that process and get the pre-built JARs from the GettingStarted wiki page
Core.jar is the library solution to integrate zxing in your app
(the other option is via Intent but BarcodeScanner.apk is needed)
For zxing2.2, you can obtain the core.jar from the zxing Maven repository here

Answer 5

Zxing 2.2 and above don't include core/build.xml
If the original file is necessary I recommend using Zxing 2.1, which can be found here:
https://code.google.com/p/zxing/downloads/detail?name=ZXing-2.2.zip&can=2&q=