Android multi-module Gradle setup example

app.gradle.kts

plugins {
    id("com.android.application")
}

android {
    defaultConfig {
        applicationId = "com.example.task"
        versionCode = 1
        versionName = "1.0"
    }
}

dependencies {
    implementation(project(":player"))
}

lib.gradle.kts

apply {
    plugin("com.android.library")
}

dependencies {
    implementation("com.google.android.exoplayer:exoplayer:2.9.6")
}

project.gradle

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath("com.android.tools.build:gradle:${Versions.androidGradlePlugin}")
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:${Versions.kotlin}")
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

subprojects {
    if (name == "app") {
        apply plugin: "com.android.application"
    } else {
        apply plugin: "com.android.library"
    }
    apply plugin: 'kotlin-android'
    apply plugin: 'kotlin-kapt'

    android {
        compileSdkVersion(Versions.compileSdk)

        defaultConfig {
            minSdkVersion(Versions.minSdk)
            targetSdkVersion(Versions.targetSdk)
            testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
        }

        dexOptions {
            preDexLibraries = true
            javaMaxHeapSize = "4g"
        }

        compileOptions {
            targetCompatibility JavaVersion.VERSION_1_8
        }
    }

    kapt {
        useBuildCache = true
        correctErrorTypes = true
    }

    dependencies {
        implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:${Versions.kotlin}")
        implementation("org.jetbrains.kotlinx:kotlinx-coroutines-android:1.1.1")
        implementation("androidx.core:core-ktx:1.0.1")
        implementation("androidx.appcompat:appcompat:1.0.2")
        implementation("org.koin:koin-androidx-viewmodel:2.0.0-beta-1")

        testImplementation("junit:junit:4.12")

        androidTestImplementation("androidx.test:runner:1.1.1")
        androidTestImplementation("androidx.test.espresso:espresso-core:3.1.1")
    }
}

tasks.register("clean", Delete) {
    delete(rootProject.buildDir)
}