Android + gRPC build.gradle

app-build.gradle

apply plugin: 'com.android.application'

apply plugin: 'kotlin-android'

apply plugin: 'kotlin-android-extensions'

apply plugin: "com.google.protobuf"

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.wantedly.kusudama"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

protobuf {
    protoc {
        artifact = 'com.google.protobuf:protoc:3.5.1-1'
    }
    plugins {
        javalite {
            artifact = "com.google.protobuf:protoc-gen-javalite:3.0.0"
        }
        grpc {
            artifact = 'io.grpc:protoc-gen-grpc-java:1.16.1'
        }
    }
    generateProtoTasks {
        all().each { task ->
            task.plugins {
                javalite {}
                grpc { // Options added to --grpc_out
                    option 'lite'
                }
            }
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
    implementation 'androidx.core:core-ktx:1.0.1'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'
    // gRPC dependencies
    implementation "io.grpc:grpc-okhttp:1.16.1"
    implementation "io.grpc:grpc-protobuf-lite:1.16.1"
    implementation "io.grpc:grpc-stub:1.16.1"
    implementation "javax.annotation:javax.annotation-api:1.2"
    protobuf 'com.google.protobuf:protobuf-java:3.4.0'
    protobuf 'com.google.api.grpc:proto-google-common-protos:1.12.0'
}

project-build.gradle

buildscript {
    ext.kotlin_version = '1.3.10'
    repositories {
        google()
        jcenter()
        
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.0-beta04'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.protobuf:protobuf-gradle-plugin:0.8.7'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

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

task clean(type: Delete) {
    delete rootProject.buildDir
}