registerJavaGeneratingTask

GenExcaliburMapTask

public class GenExcaliburMapTask extends DefaultTask {

    @OutputDirectory
    File outputDir

    @Input
    String outputPackageName

    @TaskAction
    def generateMap() {
        outputDir.deleteDir()
        TypeSpec typeSpec = TypeSpec.classBuilder("ExcaliburMap").addModifiers(Modifier.PUBLIC).build()
        JavaFile mapFile = JavaFile.builder(outputPackageName, typeSpec)
                .addFileComment("Generated by 2BAB.")
                .build()
        mapFile.writeTo(outputDir)
    }

}

registerJavaGeneratingTask

project.afterEvaluate {
    project.android.applicationVariants.all { variant ->
    def genTask = project.tasks.create(name: "genearte${variant.name.capitalize()}ExcaliburMap", type: GenExcaliburMapTask)

    // get output dir
    File genDir = new File(project.buildDir, "generated/source/saber/${variant.dirName}")
    genTask.outputDir = genDir

    // get output package name
//  def buildConfig = variant.generateBuildConfig
//  buildConfig.doLast {
//      def packageName = buildConfig.appPackageName
//      log.debug "SaberGradlePlugin: [${variant.name}] packageName: $packageName"
//      genTask.outputPackageName = packageName
//  }

    def applicationId = [variant.mergedFlavor.applicationId, variant.buildType.applicationIdSuffix].findAll().join()
    genTask.outputPackageName = applicationId

    // add task to generatingTask
    variant.registerJavaGeneratingTask genTask, genDir
    }
}