app.build.gradle

apply plugin: 'com.android.application'
apply plugin: 'android-apt'

android {
    compileSdkVersion versions.compileSdk
    buildToolsVersion versions.buildTools

    defaultConfig {
        applicationId "samples.linhtruong.com.ui_reactive_rxjava_realm"
        minSdkVersion versions.minSdk
        targetSdkVersion versions.targetSdk
        versionCode versions.code
        versionName versions.name

    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }

    dexOptions {
        // added for instant-run optimization
        maxProcessCount 4
        javaMaxHeapSize "2g"
    }
}

dependencies {

    compile libraries.supportAppCompat

    apt libraries.androidAnnotations
    compile libraries.androidAnnotationsApi
}

config.gradle

ext.versions = [
        code              : 1,
        name              : '1.0',
        minSdk            : 16,
        targetSdk         : 23,
        compileSdk        : 23,
        buildTools        : '23.0.2',

        // android
        supportLibs       : '23.4.0',

        // 3rd
        wire              : '2.1.2',
        dagger            : '2.4',
        javaxAnnotations  : '1.2',
        androidAnnotations: '4.1.0',
        rxJava            : '1.1.8',
        rxAndroid         : '1.2.0',
        retrofit          : '2.0.2',
        okHttp            : '3.2.0',
        realm             : '1.1.1',
        gson              : '2.6.2',
        materialDialog    : '0.8.5.9@aar',
        robotoTextView    : '2.5.0'
]

ext.libraries = [

        // android
        supportAnnotations      : "com.android.support:support-annotations:$versions.supportLibs",
        supportAppCompat        : "com.android.support:appcompat-v7:$versions.supportLibs",
        supportDesign           : "com.android.support:design:$versions.supportLibs",
        supportRecyclerView     : "com.android.support:recyclerview-v7:$versions.supportLibs",

        // 3rd
        realm                   : "io.realm:realm-gradle-plugin:$versions.realm",
        wire                    : "com.squareup.wire:wire-runtime:$versions.wire",
        dagger                  : "com.google.dagger:dagger:$versions.dagger",
        daggerCompiler          : "com.google.dagger:dagger-compiler:$versions.dagger",
        javaxAnnotations        : "javax.annotation:javax.annotation-api:$versions.javaxAnnotations",
        androidAnnotations      : "org.androidannotations:androidannotations:$versions.androidAnnotations",
        androidAnnotationsApi   : "org.androidannotations:androidannotations-api:$versions.androidAnnotations",
        rxJava                  : "io.reactivex:rxjava:$versions.rxJava",
        rxAndroid               : "io.reactivex:rxandroid:$versions.rxAndroid",
        okHttp                  : "com.squareup.okhttp3:okhttp:$versions.okHttp",
        okHttpLoggingInterceptor: "com.squareup.okhttp3:logging-interceptor:$versions.okHttp",
        retrofit                : "com.squareup.retrofit2:retrofit:$versions.retrofit",
        retrofitGsonConverter   : "com.squareup.retrofit2:converter-gson:$versions.retrofit",
        retrofitRxJavaAdapter   : "com.squareup.retrofit2:adapter-rxjava:$versions.retrofit",
        materialDialog          : "com.afollestad.material-dialogs:core:$versions.materialDialog",
        robotoTextView          : "com.github.johnkil.android-robototextview:robototextview:$versions.robotoTextView"
]

lib.build.gradle

apply plugin: 'com.android.library'
apply plugin: 'realm-android'

android {
    compileSdkVersion versions.compileSdk
    buildToolsVersion versions.buildTools

    defaultConfig {
        minSdkVersion versions.minSdk
        targetSdkVersion versions.targetSdk
        versionCode versions.code
        versionName versions.name
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {

    compile libraries.supportAppCompat
}

project.build.gradle

// Top-level build file where you can add configuration options common to all sub-projects/modules.
apply from: 'config.gradle'

buildscript {
    apply from: 'config.gradle'

    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.2.0'

        // realm
        classpath libraries.realm

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
    }
}

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

good