This is the way I do it (working)
<target
name="-package-resources"
depends="-crunch" >
<!-- only package resources if *not* a library project -->
<echo message="Current Package name: ${app.custompackagename}" />
<do-only-if-not-library elseText="Library project: do not package resources..." >
<aapt
androidjar="${project.target.android.jar}"
apkfolder="${out.absolute.dir}"
assets="${asset.absolute.dir}"
buildType="${build.target}"
command="package"
debug="${build.is.packaging.debug}"
executable="${aapt}"
ignoreAssets="${aapt.ignore.assets}"
libraryPackagesRefid="project.library.packages"
libraryRFileRefid="project.library.bin.r.file.path"
libraryResFolderPathRefid="project.library.res.folder.path"
manifest="${out.manifest.abs.file}"
manifestpackage="${app.custompackagename}"
nocrunch="${build.packaging.nocrunch}"
previousBuildType="${build.last.target}"
resourcefilename="${resource.package.file.name}"
resourcefilter="${aapt.resource.filter}"
versioncode="${version.code}"
versionname="${version.name}" >
<res path="${out.res.absolute.dir}" />
<res path="${resource.absolute.dir}" />
<!-- <nocompress /> forces no compression on any files in assets or res/raw -->
<!-- <nocompress extension="xml" /> forces no compression on specific file extensions in assets and res/raw -->
</aapt>
</do-only-if-not-library>
</target>
The line manifestpackage=”${app.custompackagename}” is the key.