Manually Adding Aar with Dependency Pom/Iml File

Manually adding aar with dependency pom/iml file

1. Publishing

In your aar project, add maven-publish plugin and add necessary plugin configuration.

apply plugin: 'com.android.library'
apply plugin: 'maven-publish'

...

dependencies {
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.novoda:bintray-release:0.2.7'
}
    
...

publishing {
    publications {
        maven(MavenPublication) {
            groupId 'com.example' //You can either define these here or get them from project conf elsewhere
            artifactId 'example'
            version '0.0.1-SNAPSHOT'
            artifact "$buildDir/outputs/aar/app-release.aar" //aar artifact you want to publish

            //generate pom nodes for dependencies
            pom.withXml {
                def dependenciesNode = asNode().appendNode('dependencies')
                configurations.compile.allDependencies.each { dependency ->
                    def dependencyNode = dependenciesNode.appendNode('dependency')
                    dependencyNode.appendNode('groupId', dependency.group)
                    dependencyNode.appendNode('artifactId', dependency.name)
                    dependencyNode.appendNode('version', dependency.version)
                }
            }
        }
    }
    
    //publish to filesystem repo
    repositories{
        maven {
            url "$buildDir/repo"
        }
    }
}

Few things to note:

1. We're using a custom maven publication, so you have to define what is being published with the artifact clause

2. We have to generate the pom ourselves, in the code above I'm using all compile config dependencies, you may want to make sure all the configs you care about are covered.

Running gradle publish will publish to a maven repo structure to the repo folder, which you can then consume from a different project.

2. Using published .aar

In a different android project, to use the aar published in #1:
In top level build.gradle:

allprojects {
    repositories {
        jcenter()
        maven {
            url "D:/full/path/to/repo"
        }
    }
}

add the path to earlier repo as a maven repository. Note that you may have to use the full path, because $buildDir has a different value for this project. In your app build.gradle:

dependencies {
    ...
    other dependencies
    ...
    implementation ('com.example:example:0.0.1-SNAPSHOT@aar'){transitive=true}
}

transitive=true is required for to fetch the transitive dependencies from the pom file.

Adding external dependecy to AAR file

OK so this wasn't the way to go about it for me.

I, eventualy, tried other methods and found the answer.

I posted my solution in this thread

How to add a local aar dependency into a bintray published library?

I ended up using Kezong:

apply plugin: 'com.kezong.fat-aar'

I will create a fat arr containing all the dependencies you want.
In your gradle.build file you and the dependency to your local aar like this:

embed project(path: ':myLocalARR-1.3.1-release')

Using embed will ensure that your final arr will contain the java files from your local dependency.

How add more than one aar file in build.gradle?

I got a way to do, just create a module, let's call it as base_lib, and put all your aars inside. All other modules implemate it. This is how my build.gradle file looks.

plugins {
    id 'java-library'
}

java {
    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
}

dependencies {
    api fileTree(include: ['*.aar'], dir: 'libs')
}

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