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Scala with android studio 1 answer
What is the simplest way to mix Java+Scala in an Android project using Gradle? 2 answers

I'm trying to integrate a Scala library in an android project. All the articles and previous answers seem to be outdated now.

Any help will be really appreciated. Thanks

Scala source code is intended to be compiled to Java bytecode, so that the resulting executable code runs on a Java virtual machine. Scala provides language inter-operability with Java, so that libraries written in both languages may be referenced directly in Scala or Java code.

So a Scala library is just a jar (zip of compiled *.class byte-code files), and you must already know how to load a jar file.

Add `scala-library` dependency to Android Studio using `Gradle`

Add the Scala plugin buildscript dependency to your build.gradle:

    buildscript {
        repositories {

            jcenter()
            mavenCentral()
            maven { url 'https://jitpack.io' }
        }

        dependencies {
            classpath 'com.android.tools.build:gradle:2.3.0'
            classpath 'com.github.xingda920813:gradle-android-scala-plugin:android-gradle-2.3.0'

        }
    }
//Apply plugin
apply plugin: "com.android.application"
apply plugin: "jp.leafytree.android-scala"

The plugin decides scala language version using scala-library's version.

In your build.gradle:

dependencies {
    compile "org.scala-lang:scala-library:2.11.8"
    //**put your library here**
    compile "<yourlibrary>:<yourlibrary version>"
    //OR you can:
    //compile project(":lib1")//your library directory
}

See gradle-android-scala-plugin