Stream + Retrolambda sample

build.gradle

apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'
apply plugin: 'com.neenbedankt.android-apt'

android {
    compileSdkVersion 26
    buildToolsVersion "25.0.3"
    defaultConfig {
        applicationId "rom4ek.com.sparktestapp"
        minSdkVersion 14
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }

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

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    productFlavors {
        production {
            versionCode 1
            versionName "v1.0.0"
            buildConfigField 'String', 'API_ENDPOINT', '"https://w.qiwi.com/"'
        }

        development {
            versionCode 1
            versionName "v0.1"
            buildConfigField 'String', 'API_ENDPOINT', '"https://w.qiwi.com/"'
        }
    }
}

def support_version = "26.0.0-beta2"
def butterknife_version = "8.6.0"
def retrofit_version = "2.3.0"
def dagger_version = "2.7"

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile('com.android.support.test:runner:0.5', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    testCompile('com.android.support.test:rules:0.5', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile "com.android.support:appcompat-v7:${support_version}"
    compile "com.android.support:design:${support_version}"
    compile "com.squareup.retrofit2:retrofit:${retrofit_version}"
    compile "com.squareup.retrofit2:converter-gson:${retrofit_version}"
    compile "com.squareup.retrofit2:adapter-rxjava2:${retrofit_version}"
    compile "com.jakewharton:butterknife:${butterknife_version}"
    annotationProcessor "com.jakewharton:butterknife-compiler:${butterknife_version}"
    apt "com.jakewharton:butterknife-compiler:${butterknife_version}"
    compile "com.google.dagger:dagger:${dagger_version}"
    apt "com.google.dagger:dagger-compiler:${dagger_version}"
    compile 'com.squareup.sqlbrite2:sqlbrite:2.0.0-SNAPSHOT'
    compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
    compile 'io.reactivex.rxjava2:rxjava:2.1.0'
    compile 'com.google.code.gson:gson:2.8.1'
    compile 'com.squareup.okhttp3:logging-interceptor:3.8.1'
    compile 'org.greenrobot:eventbus:3.0.0'
    compile 'com.annimon:stream:1.1.2'
    compile 'com.jakewharton.timber:timber:4.5.1'
    provided 'org.glassfish:javax.annotation:10.0-b28'
    testCompile 'junit:junit:4.12'
    testCompile 'org.mockito:mockito-core:2.0.17-beta'
}

build.gradle project

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.3'
        classpath 'me.tatarka:gradle-retrolambda:3.4.0'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        jcenter()
        maven { url 'https://maven.google.com' }
        maven { url "https://oss.sonatype.org/content/repositories/snapshots" }
    }
}

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