ExemploAnnotations_build.gradle

apply plugin: 'com.android.application'
apply plugin: 'android-apt'//plugin que auxilia no processamento das annotations

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "br.com.luizmarcus.exemploannotations"
        minSdkVersion 15
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
    }
}

apt {
    arguments {
        resourcePackageName android.defaultConfig.applicationId
        androidManifestFile variant.outputs[0]?.processResources?.manifestFile
        logLevel 'INFO'
    }
}

//Pasta onde as annotations gerarão as classes
android.applicationVariants.each { variant ->
    aptOutput = file("${project.buildDir}/source/apt_generated/${variant.dirName}")
    variant.javaCompile.doFrist {
        aptOutput.mkdirs()
        variant.javaCompile.options.compilerArgs += [
                '-processorpath', configurations.apt.getAsPath(),
                '-AandroidManifestFile=' + variant.processResources.manifestFile,
                '-s', aptOutput
        ]
    }
}

def AAVersion = '3.3.2'//versão da Android Annotations

dependencies {
    //compila jars externos
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'

    //biblioteca de suporte
    compile 'com.android.support:appcompat-v7:23.1.1'

    // Android Annotations
    apt "org.androidannotations:androidannotations:$AAVersion"
    compile "org.androidannotations:androidannotations-api:$AAVersion"
}