Sources for Dagger 1 -> 2 migration process

ActivityScope.java

@Scope
@Retention(RetentionPolicy.RUNTIME)
public @interface ActivityScope {
}

App.java

public class App extends Application {

    private AppComponent component;

    @Inject
    AnalyticsManager analyticsManager;

    @Override
    public void onCreate() {
        super.onCreate();
        setupGraph();
        analyticsManager.registerAppEnter();
    }

    private void setupGraph() {
        component = Dagger_AppComponent.builder()
                .appModule(new AppModule(this))
                .build();
        component.inject(this);
    }

    public AppComponent component() {
        return component;
    }

    public static App get(Context context) {
        return (App) context.getApplicationContext();
    }
}

appbuild.gradle

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

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 22
        versionCode 1
        versionName "1.0"
    }

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_7
        targetCompatibility JavaVersion.VERSION_1_7
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.google.dagger:dagger:2.0-SNAPSHOT'
    apt 'com.google.dagger:dagger-compiler:2.0-SNAPSHOT'
    provided 'org.glassfish:javax.annotation:10.0-b28'
}

AppComponent.java

@Singleton
@Component(
        modules = {
                AppModule.class,
                DomainModule.class,
                InteractorsModule.class
        }
)
public interface AppComponent {
    void inject(App app);

    AnalyticsManager getAnalyticsManager();
    LoginInteractor getLoginInteractor();
    FindItemsInteractor getFindItemsInteractor();
}

AppModule.java

@Module(
        injects = {
                App.class
        },
        includes = {
                DomainModule.class,
                InteractorsModule.class
        }
)
public class AppModule {

    private App app;

    public AppModule(App app) {
        this.app = app;
    }

    @Provides public Application provideApplication() {
        return app;
    }
}

AppModule2.java

@Module
public class AppModule {

    private App app;

    public AppModule(App app) {
        this.app = app;
    }

    @Provides public Application provideApplication() {
        return app;
    }
}

build.gradle

buildscript {
    repositories {
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.1.3'
        classpath 'com.neenbedankt.gradle.plugins:android-apt:1.4'
    }
}

allprojects {
    repositories {
        mavenCentral()
        maven { url "https://oss.sonatype.org/content/repositories/snapshots/" }
    }
}

LoginComponent.java

@ActivityScope
@Component(
        dependencies = AppComponent.class,
        modules = LoginModule.class
)
public interface LoginComponent {
    void inject(LoginActivity activity);

    LoginPresenter getLoginPresenter();
}

MainComponent.java

@ActivityScope
@Component(
        dependencies = AppComponent.class,
        modules = MainModule.class
)
public interface MainComponent {
    void inject(MainActivity activity);

    MainPresenter getLoginPresenter();
}

setupcomponent.java

protected void setupComponent(AppComponent appComponent) {
    Dagger_MainComponent.builder()
            .appComponent(appComponent)
            .mainModule(new MainModule(this))
            .build()
            .inject(this);
}