Android Library Gradle release JAR

Question

How can I release Jar packaging of android-library project?
I've found, classes.jar is located under build/bundles/release/classes.jar and I suppose this is correct Jar package (contains *.class files).

Is there some official way, to release library as JAR instead of AAR ?

Edit
I use Gradle to release Maven artifacts, and I'd like to release JAR along with AAR package. So JAR with signature, md5, manifest, ...
based on https://chris.banes.me/2013/08/27/pushing-aars-to-maven-central/

apply plugin: 'maven' apply plugin: 'signing'  configurations {     archives {         extendsFrom configurations.default     } }  def sonatypeRepositoryUrl if (isReleaseBuild()) {     println 'RELEASE BUILD'     sonatypeRepositoryUrl = "https://oss.sonatype.org/service/local/staging/deploy/maven2/" } else {     println 'DEBUG BUILD'     sonatypeRepositoryUrl = "https://oss.sonatype.org/content/repositories/snapshots/" }  if(!hasProperty('nexusPassword')) {     ext.set('nexusPassword', System.console().readPassword("\n\$ Type in password for Sonatype nexus account " + nexusUsername + ": ")) }  if(!signing.hasProperty('password')) {     ext.set('signing.password', System.console().readPassword("\n\$ Type in GPG key password: ")) }  afterEvaluate { project ->     uploadArchives {         repositories {             mavenDeployer {                 beforeDeployment { MavenDeployment deployment -> signing.signPom(deployment) }                  pom.artifactId = POM_ARTIFACT_ID                  repository(url: sonatypeRepositoryUrl) {                     authentication(userName: nexusUsername, password: nexusPassword)                 }                  pom.project {                     name POM_NAME                     packaging POM_PACKAGING                     description POM_DESCRIPTION                     url POM_URL                      scm {                         url POM_SCM_URL                         connection POM_SCM_CONNECTION                         developerConnection POM_SCM_DEV_CONNECTION                     }                      licenses {                         license {                             name POM_LICENCE_NAME                             url POM_LICENCE_URL                             distribution POM_LICENCE_DIST                         }                     }                      developers {                         developer {                             id "loopj"                             name "James Smith"                         }                         developer {                             id "smarek"                             name "Marek Sebera"                         }                     }                 }             }         }     }      signing {         required { isReleaseBuild() && gradle.taskGraph.hasTask("uploadArchives") }         sign configurations.archives     }      task androidJavadocs(type: Javadoc) {         source = android.sourceSets.main.java.srcDirs     }      task androidJavadocsJar(type: Jar) {         classifier = 'javadoc'         from androidJavadocs.destinationDir     }      task androidSourcesJar(type: Jar) {         classifier = 'sources'         from android.sourceSets.main.java.srcDirs     }      artifacts {         archives androidSourcesJar         archives androidJavadocsJar     } } 

using

task androidJar(type: Jar) {     from android.sourceSets.main.java.srcDirs } 

will package only java files, not compiled and linked against android sdk

Answer 1

While I haven't tried uploading the artifacts with a deployment to Sonatype (or even a local repo), here's what I managed to come up with a few weeks ago when trying to tackle the same problem.

android.libraryVariants.all { variant ->   def name = variant.buildType.name   if (name.equals(com.android.builder.core.BuilderConstants.DEBUG)) {     return; // Skip debug builds.   }   def task = project.tasks.create "jar${name.capitalize()}", Jar   task.dependsOn variant.javaCompile   task.from variant.javaCompile.destinationDir   artifacts.add('archives', task); } 

Then run the following:

./gradlew jarRelease 

Answer 2

Another way to generate a jar from a library project through gradle is as follows:

In your library's build.gradle:

def jarName = 'someJarName.jar'  task clearJar(type: Delete) {     delete "${project.buildDir}/libs/" + jarName }  task makeJar(type: Copy) {     from("${project.buildDir}/intermediates/bundles/release/")     into("${project.buildDir}/libs/")     include('classes.jar')     rename('classes.jar', jarName) }  makeJar.dependsOn(clearJar, build) 

What we are doing here is just copying the classes.jar generated by the Android Gradle plugin. Be sure to look into your build directory for this file and see if its contents are in the way you want.

Then run the makeJar task and the resulting jar will be in library/build/libs/${jarName}.jar

The will have the class files according to your configuration for release. If you are obfuscating it, then the files in the jar will be obfuscated.