Generate a Pomfile to an Android library (AAR)

README.md

Maven Publish Pomfile Generator

To be used in conjunction of maven-publish to correctly generate an AAR Pomfile.

Why?

For some reason, I can't get maven-publish to generate a Pomfile when I'm exporting an Android library (AAR). This plugin generates the Pomfile by looking at library's classpath and exclusions.

Usage

Just import this file somewhere on your project and on the library build.gradle:

apply plugin: "maven-publish"
apply from: "$rootDir/scripts/maven-publish-pomfile-generation.gradle"

publishing {
    repositories {
        mavenLocal()
    }

    publications {
        release(MavenPublication) {
            groupId "me.borges"
            artifactId "my_library"
            version "1.0.0"

            artifact "$buildDir/outputs/aar/my_library-release.aar"

            pom.withXml pomfileManualGenerator
        }
    }
}

Then you can run:

./gradlew publishToMavenLocal

maven-publish-pomfile-generation.gradle

ext.pomfileManualGenerator = {
    def root = asNode()

    def dependenciesNode = root.appendNode('dependencies')
    configurations.releaseRuntimeElements.allDependencies
            .findAll {
        it.name != null && it.name != 'unspecified' && it.version != 'unspecified' && !ext.pomFileBlacklist.contains(it.name)
    }.each {
        def dependencyNode = dependenciesNode.appendNode('dependency')
        dependencyNode.appendNode('groupId', it.group)
        dependencyNode.appendNode('artifactId', it.name)
        dependencyNode.appendNode('version', it.version)
        dependencyNode.appendNode('scope', 'compile')

        if (it.properties.excludeRules?.size() > 0) {
            def exclusionsNode = dependencyNode.appendNode('exclusions')
            it.properties.excludeRules.each { exclusion ->
                def exclusionNode = exclusionsNode.appendNode('exclusion')
                exclusion.group != null && exclusionNode.appendNode('groupId', exclusion.group)
                exclusionNode.appendNode('artifactId', exclusion.module != null ? exclusion.module : '*')
            }
        }
    }

    root.children().last()
}