build.gradle

plugins {
    // https://plugins.gradle.org/plugin/net.ltgt.apt
    id 'net.ltgt.apt' version '0.21' // mapstruct
}
// See more details: https://github.com/tbroyer/gradle-apt-plugin#usage-with-ides
apply plugin: 'net.ltgt.apt-idea' // mapstruct
//apply plugin: 'net.ltgt.apt-eclipse' // Not needed with android studio

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28

    defaultConfig {
        applicationId "com.example.mapstructtest"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
    }
    compileOptions {
        // Just here to demonstrate it compiles with this. Java 8 allows use of repeated annotations,
        // See AutoValueMapper.java for more comments on this
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation 'com.android.support:appcompat-v7:28.0.0' // Just for this example
    implementation 'org.mapstruct:mapstruct:1.3.0.Final'
    annotationProcessor 'org.mapstruct:mapstruct-processor:1.3.0.Final'
    // If mappers generated in test code
//    testAnnotationProcessor 'org.mapstruct:mapstruct-processor:1.3.0.Final'

    // For tests of mapstruct with AutoValue
    compileOnly "com.google.auto.value:auto-value:1.5.2"
    annotationProcessor "com.google.auto.value:auto-value:1.5.2"
}