AndroidAnnotationsにコントリしたい。

foo.gradle

preBuild.dependsOn(task("generateUsageReportActivities") << {
    def manifestFile = file("src/main/AndroidManifest.xml")
    def manifest = new XmlParser().parse(manifestFile);

    def pkg = manifest.@package

    def androidNamespace =  new Namespace("http://schemas.android.com/apk/res/android",  "android")


    manifest.find { Node node ->
        node.name() == "application"
    }.findAll { Node node ->
        node.name() == "activity"
    }.each { Node node ->
        def activityClass = node.attribute(androidNamespace.get("name"))
        if (activityClass[0] == ".") {
            activityClass = "$pkg$activityClass"
        }

        Map attrs = new HashMap();
        attrs.putAll(node.attributes())
        attrs.put("android:name", activityClass + "_modified")

        def newNode = new Node(null, node.name(), attrs);

        node.replaceNode(newNode)
    }
});