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“Defeat the Dahaka" Dagger 2 Android Garima Jain @ragdroid

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Garima Jain @ragdroid

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Garima Jain @ragdroid

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Garima Jain @ragdroid

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Garima Jain @ragdroid

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Garima Jain @ragdroid

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Garima Jain @ragdroid

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@ragdroid @droidconDE

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@ragdroid @droidconDE MVP Testing DataBinding Retrofit Dagger 2

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Garima Jain @ragdroid “Defeat the Dahaka" Dagger 2 Android

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@ragdroid @droidconDE POP QUIZ • Dagger2? • Dagger Android • Prince of Persia

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ABOUT THE TALK

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Theme: Prince of Persia • Prince uses Dagger • Dagger can reverse time • Dahaka, (guardian of timeline) • Dahaka comes to kill the Prince.

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Analogy • Prince = Us • Dagger = Dagger • Dahaka (Enemy) = Generated Code, Complexity

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Analogy • Developer uses Dagger • Developer starts backtracking the generated code • Developer is chased by the Dahaka (complexity of generated code)

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Agenda • Brief Introduction - “Codes of Time” • Scopes - “Face of the Dahaka” • @Singleton Scopes • @Reusable Scopes • Custom Scopes • Component Dependencies - “Unleash the Beast” • Demo App • Dependent Component • Subcomponent • Intermediate Concepts - “Defeat the Dahaka” • Dagger Android - “Befriend the Beast”

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Who? • Assumption : Basic familiarity with Dagger • Intermediate

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INTRODUCTION “CODES OF TIME”

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@ragdroid @droidconDE Droid of Asia

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@ragdroid @droidconDE public UserManager() {
 this.service = new PokemonService(); 
 } Droid of Asia

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@ragdroid @droidconDE Dependency Creation Disadvantages • Non-Testable • Non-Extendable

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@ragdroid @droidconDE Dagger 1

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@ragdroid @droidconDE Dagger 1 Advantages • Testable code • Modularized

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@ragdroid @droidconDE Dagger 1 Disadvantages • Reflection • Runtime Graph Composition • God Module with @Singleton • Difficult to use proguard

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@ragdroid @droidconDE Dagger 1 Disadvantages Dagger 2

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@ragdroid @droidconDE Dagger 2 Advantages • No Reflection • Compile-time Graph Composition • Traceable code • Better Scope management

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SCOPES “FACE OF THE DAHAKA”

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Scope • Annotation from javax.inject package • How long a scoped instance lives • What happens if : • No Scope specified? • Annotation is specified?

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@Singleton • Another annotation from javax.inject package • Scope of dependency is throughout the application • Two ways to re-use dependencies : • Annotate Provider methods • Annotate the Dependency class itself

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@ragdroid @droidconDE @SINGLETON EXAMPLE

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AppComponent @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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AppComponent @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); } AppComponent

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@ragdroid @droidconDE CASE 1 DEPENDENCY W/O SCOPE

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AppModule @Module public class AppModule { private final Application application; public AppModule(Application application) { this.application = application; } @Provides //No @Singleton annotation Application applicationProvider() { return application; } }

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@Module public class AppModule { private final Application application; public AppModule(Application application) { this.application = application; } @Provides //No @Singleton annotation Application applicationProvider() { return application; } } AppModule

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = AppModule_ApplicationFactory.create(builder.appModule); } } (Generated)

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = AppModule_ApplicationFactory.create(builder.appModule); } } (Generated)

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = AppModule_ApplicationFactory.create(builder.appModule); } } (Generated)

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@ragdroid @droidconDE CASE 2 DEPENDENCY WITH SCOPE

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AppModule @Module public class AppModule { private final Application application; public AppModule(Application application) { this.application = application; } @Provides @Singleton Application applicationProvider() { return application; } }

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AppModule @Module public class AppModule { private final Application application; public AppModule(Application application) { this.application = application; } @Provides @Singleton Application applicationProvider() { return application; } }

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = DoubleCheck.provider( AppModule_ApplicationFactory.create(builder.appModule)); } } (Generated)

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = DoubleCheck.provider( AppModule_ApplicationFactory.create(builder.appModule)); } } (Generated)

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = DoubleCheck.provider( AppModule_ApplicationFactory.create(builder.appModule)); } } (Generated)

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DaggerAppComponent @Generated public final class DaggerAppComponent implements AppComponent { private Provider applicationProvider; /** other code **/ private void initialize(final Builder builder) { this.applicationProvider = DoubleCheck.provider( AppModule_ApplicationFactory.create(builder.appModule)); } } (Generated)

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DoubleCheck Memoizes value using Double-Check idiom. (dagger.internal)

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DoubleCheck Memoizes value using Double-Check idiom. public T get() {
 Object result = instance;
 if (result == UNINITIALIZED) {
 synchronized (this) {
 result = instance;
 if (result == UNINITIALIZED) {
 result = provider.get();
 
 Object currentInstance = instance; // other code
 instance = result;
 
 provider = null;
 }
 }
 }
 return (T) result;
 } (dagger.internal)

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DoubleCheck Memoizes value using Double-Check idiom. public T get() {
 Object result = instance;
 if (result == UNINITIALIZED) {
 synchronized (this) {
 result = instance;
 if (result == UNINITIALIZED) {
 result = provider.get();
 
 Object currentInstance = instance; // other code
 instance = result;
 
 provider = null;
 }
 }
 }
 return (T) result;
 } (dagger.internal)

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DoubleCheck Memoizes value using Double-Check idiom. public T get() {
 Object result = instance;
 if (result == UNINITIALIZED) {
 synchronized (this) {
 result = instance;
 if (result == UNINITIALIZED) {
 result = provider.get();
 
 Object currentInstance = instance; // other code
 instance = result;
 
 provider = null;
 }
 }
 }
 return (T) result;
 } (dagger.internal)

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Take Aways • DONT “Scope All the Things!” • Scoping has overheads. • By-default no Scope. • Scope only when needed • Like for Heavy Mutable Objects

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@ragdroid @droidconDE @REUSABLE

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@Reusable • Limit the instantiation. • Use when Exact same instance not needed. • Not tied to any component or subcomponent. • Can Have multiple sub-components caching different instances. • Use for heavy immutable dependencies.

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ReusableComponent 
 @Component(modules = ReusableModule.class) public interface ReusableComponent { SomeObject someObject(); }

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ReusableComponent 
 @Component(modules = ReusableModule.class) public interface ReusableComponent { SomeObject someObject(); }

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SomeObject @Reusable public class SomeObject { @Inject public SomeObject() { } }

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DaggerReusableComponent @Generated public final class DaggerReusableComponent implements ReusableComponent { /** other code **/ Provider someObjectProvider; private void initialize(final Builder builder) { this.someObjectProvider = SingleCheck.provider(SomeObject_Factory.create()); } } (Generated)

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DaggerReusableComponent @Generated public final class DaggerReusableComponent implements ReusableComponent { /** other code **/ Provider someObjectProvider; private void initialize(final Builder builder) { this.someObjectProvider = SingleCheck.provider(SomeObject_Factory.create()); } } (Generated)

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DaggerReusableComponent @Generated public final class DaggerReusableComponent implements ReusableComponent { /** other code **/ Provider someObjectProvider; private void initialize(final Builder builder) { this.someObjectProvider = SingleCheck.provider(SomeObject_Factory.create()); } } (Generated)

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SingleCheck Memoizes value using simple lazy initialization and caching (dagger.internal)

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Memoizes value using simple lazy initialization and caching public T get() {
 
 Provider providerReference = provider;
 if (instance == UNINITIALIZED) {
 instance = providerReference.get();
 provider = null;
 }
 return (T) instance;
 } (dagger.internal) SingleCheck

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Memoizes value using simple lazy initialization public T get() {
 
 Provider providerReference = provider;
 if (instance == UNINITIALIZED) {
 instance = providerReference.get();
 provider = null;
 }
 return (T) instance;
 } (dagger.internal) SingleCheck

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@Singleton vs @Reusable • Heavy mutable object : @Singleton • Heavy immutable object : @Reusable •

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@ragdroid @droidconDE GOD APP MODULE

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@ragdroid @droidconDE App Module AppComponent @Module public class AppModule { private final Application application; @Provides @Si AppModule @Singleton @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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@ragdroid @droidconDE Big App Module AppComponent @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton AppModule @Singleton @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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@ragdroid @droidconDE AppComponent @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule @Singleton Big App Module @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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@ragdroid @droidconDE AppComponent @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule @Singleton God Module God App Module @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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@ragdroid @droidconDE God App Module How To Improve?

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@ragdroid @droidconDE God App Module Splitting App Module

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@ragdroid @droidconDE AppComponent @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } @Singleton @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); } Splitting App Module ApiModule AppModule

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@ragdroid @droidconDE Splitting App Module @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule ApiModule AppComponent @Singleton @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); }

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@ragdroid @droidconDE Splitting App Module AppComponent @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule @Singleton @Component(modules = AppModule.class) @Singleton public interface AppComponent { Application application(); } ApiModule @Component( modules = AppModule.class, ApiModule.class)

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@ragdroid @droidconDE Splitting App Module @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule ApiModule @Component( modules = AppModule.class, ApiModule.class) OR AppComponent

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@ragdroid @droidconDE Splitting App Module @Module public class AppModule { private final Application application; @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } @Provides @Singleton Application applicationProvider() { return application; } } AppModule ApiModule @Component( modules = AppModule.class, ApiModule.class) @Module( includes = ApiModule.class) AppModule OR AppComponent

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@ragdroid @droidconDE Splitting App Module

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@ragdroid @droidconDE How to Improve? • Better Scope Management • More modularity • Custom Scopes : • @UserScope • @ActivityScope • @FragmentScope

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@ragdroid @droidconDE Custom Scopes

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@ragdroid @droidconDE Custom Scopes Multiple Components

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Multiple Components 1. Dependent Components 2. Sub-Components

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COMPONENT DEPENDENCIES

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@ragdroid @droidconDE POKEMON APP

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch pikachu Login Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch pikachu Login Inventory Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch pikachu Login Log-Out Inventory Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch pikachu Login Log-Out jigglypuff Inventory Application

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AppComponent (@Singleton) UserComponent (@UserScope) UserComponent @UserScope Login Component @ActivityScope Home Component Items Component Login Component Home Component Items Component Fragments Fragments Launch pikachu Login Log-Out jigglypuff Inventory Inventory Application

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Pokemon App

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@ragdroid @droidconDE SUB COMPONENT VS DEPENDENT COMPONENT

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<> AppComponent schedulerProvider @Singleton

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AppComponentImpl • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent schedulerProvider Sub Component @Singleton @ActivityScope

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UserComponentImpl • schedulerProvider • pokemon AppComponentImpl • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent schedulerProvider HomeComponentImpl ItemsComponentImpl Dependent Component Sub Component @Singleton @ActivityScope @UserScope @ActivityScope @ActivityScope

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UserComponentImpl • schedulerProvider • pokemon AppComponentImpl • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent schedulerProvider HomeComponentImpl ItemsComponentImpl Dependent Component Sub Component @Singleton @ActivityScope @UserScope @ActivityScope @ActivityScope

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@ragdroid @droidconDE APP COMPONENT

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@Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class)) interface AppComponent { fun loginBuilder(): LoginComponent.Builder fun schedulerProvider(): BaseSchedulerProvider } AppComponent

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@Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class)) interface AppComponent { fun loginBuilder(): LoginComponent.Builder fun schedulerProvider(): BaseSchedulerProvider } AppComponent

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@Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class)) interface AppComponent { fun loginBuilder(): LoginComponent.Builder fun schedulerProvider(): BaseSchedulerProvider } AppComponent

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@ragdroid @droidconDE DAHAKA APPLICATION

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class DahakaApplication : Application() { override fun onCreate() { super.onCreate() appComponent = DaggerAppComponent .builder() .application(this) .build() } } DahakaApplication

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class DahakaApplication : Application() { override fun onCreate() { super.onCreate() appComponent = DaggerAppComponent .builder() .application(this) .build() } } DahakaApplication

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DEPENDENT COMPONENTS

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@ragdroid @droidconDE USER COMPONENT

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@Component(dependencies = arrayOf(AppComponent::class), modules = arrayOf(UserModule::class)) @UserScope interface UserComponent { @Component.Builder interface Builder { @BindsInstance fun pokeMon(pokemon: Pokemon): Builder … } } UserComponent

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@Component(dependencies = arrayOf(AppComponent::class), modules = arrayOf(UserModule::class)) @UserScope interface UserComponent { @Component.Builder interface Builder { @BindsInstance fun pokeMon(pokemon: Pokemon): Builder … } } UserComponent

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@Component(dependencies = arrayOf(AppComponent::class), modules = arrayOf(UserModule::class)) @UserScope interface UserComponent { @Component.Builder interface Builder { @BindsInstance fun pokeMon(pokemon: Pokemon): Builder … } } UserComponent

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Binding Pokemon • Two ways of Providing / Binding Pokemon to graph 1. UserModule Constructor 2. @Component.Builder with @BindsInstance

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 @Module
 public abstract class UserModule {
 
 private final Pokemon pokemon;
 
 public UserModule(Pokemon pokemon) {
 this.pokemon = pokemon;
 }
 
 @Provides
 @UserScope
 public Pokemon providePokemon() {
 return pokemon;
 }
 
 }
 UserModule Constructor

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 @Module
 public abstract class UserModule {
 
 private final Pokemon pokemon;
 
 public UserModule(Pokemon pokemon) {
 this.pokemon = pokemon;
 }
 
 @Provides
 @UserScope
 public Pokemon providePokemon() {
 return pokemon;
 }
 
 }
 UserModule Constructor

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 @Module
 public abstract class UserModule {
 
 private final Pokemon pokemon;
 
 public UserModule(Pokemon pokemon) {
 this.pokemon = pokemon;
 }
 
 @Provides
 @UserScope
 public Pokemon providePokemon() {
 return pokemon;
 }
 
 }
 UserModule Constructor

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@Component(dependencies = arrayOf(AppComponent::class), modules = arrayOf(UserModule::class)) @UserScope interface UserComponent { @Component.Builder interface Builder { @BindsInstance fun pokeMon(pokemon: Pokemon): Builder … } } User Component @Component.Builder

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@Component(dependencies = arrayOf(AppComponent::class), modules = arrayOf(UserModule::class)) @UserScope interface UserComponent { @Component.Builder interface Builder { @BindsInstance fun pokeMon(pokemon: Pokemon): Builder … } } UserComponent @BindsInstance

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@ragdroid @droidconDE USER MANAGER

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@Singleton class UserManager @Inject constructor(private val service: PokemonService) { var userComponent: UserComponent? = null private set public fun createUserSession(pokemon: Pokemon) { userComponent = DaggerUserComponent.builder() .appComponent(DahakaApplication.app.appComponent) .pokeMon(pokemon) .build() } … } UserManager

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@Singleton class UserManager @Inject constructor(private val service: PokemonService) { var userComponent: UserComponent? = null private set public fun createUserSession(pokemon: Pokemon) { userComponent = DaggerUserComponent.builder() .appComponent(DahakaApplication.app.appComponent) .pokeMon(pokemon) .build() } … } UserManager

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@Singleton class UserManager @Inject constructor(private val service: PokemonService) { var userComponent: UserComponent? = null private set public fun createUserSession(pokemon: Pokemon) { userComponent = DaggerUserComponent.builder() .appComponent(DahakaApplication.app.appComponent) .pokeMon(pokemon) .build() } … } UserManager

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@ragdroid @droidconDE DAGGER USER COMPONENT (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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public final class DaggerUserComponent implements UserComponent { private Provider schedulerProvider; private void initialize(final Builder builder) { this.schedulerProvider = new AppComponent_schedulerProvider(builder.appComponent); … } private static class AppComponent_schedulerProvider implements Provider { private final AppComponent appComponent; @Override public BaseSchedulerProvider get() { return appComponent.schedulerProvider(); } … } } DaggerUserComponent (Generated)

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SUB COMPONENTS

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@ragdroid @droidconDE LOGIN SUBCOMPONENT

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@ActivityScope @Subcomponent(modules = arrayOf(LoginModule::class)) interface LoginComponent { @Subcomponent.Builder interface Builder { @BindsInstance fun loginActivity(loginActivity: LoginActivity): Builder } } LoginComponent

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@ActivityScope @Subcomponent(modules = arrayOf(LoginModule::class)) interface LoginComponent { @Subcomponent.Builder interface Builder { @BindsInstance fun loginActivity(loginActivity: LoginActivity): Builder } } LoginComponent

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@ActivityScope @Subcomponent(modules = arrayOf(LoginModule::class)) interface LoginComponent { @Subcomponent.Builder interface Builder { @BindsInstance fun loginActivity(loginActivity: LoginActivity): Builder } } LoginComponent

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@ActivityScope @Subcomponent(modules = arrayOf(LoginModule::class)) interface LoginComponent { @Subcomponent.Builder interface Builder { @BindsInstance fun loginActivity(loginActivity: LoginActivity): Builder } } LoginComponent

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@ActivityScope @Subcomponent(modules = arrayOf(LoginModule::class)) interface LoginComponent { @Subcomponent.Builder interface Builder { @BindsInstance fun loginActivity(loginActivity: LoginActivity): Builder } } LoginComponent

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@ragdroid @droidconDE LOGIN ACTIVITY

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class LoginActivity { private lateinit var loginComponent: LoginComponent override fun initDagger(appComponent: AppComponent) { loginComponent = appComponent .loginBuilder() .loginActivity(this) .build() } … } LoginActivity

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class LoginActivity { private lateinit var loginComponent: LoginComponent override fun initDagger(appComponent: AppComponent) { loginComponent = appComponent .loginBuilder() .loginActivity(this) .build() } … } LoginActivity

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@ragdroid @droidconDE DAGGER APP COMPONENT (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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public final class DaggerAppComponent implements AppComponent { this.loginBuilderProvider = new Factory() { @Override public LoginComponent.Builder get() { return new LoginComponentBuilder(); } }; } private final class LoginComponentBuilder implements LoginComponent.Builder { … } private final class LoginComponentImpl implements LoginComponent { private LoginComponentImpl(LoginComponentBuilder builder) { assert builder != null; initialize(builder); } … } } DaggerAppComponent (Generated)

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@ragdroid @droidconDE SUB COMPONENT VS DEPENDENT COMPONENT

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<> AppComponent fun schedulerProvider() @Singleton

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DaggerAppComponent • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent fun schedulerProvider() @Singleton @ActivityScope

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DaggerAppComponent • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent fun schedulerProvider() Sub Component LoginComponent accesses any dependencies of DaggerAppComponent directly as inner class can access outer class members. @Singleton @ActivityScope

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DaggerUserComponent • schedulerProvider • pokemon DaggerAppComponent • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent fun schedulerProvider() HomeComponentImpl ItemsComponentImpl Dependent Component UserComponent accesses any dependencies of DaggerAppComponent via an interface of AppComponent. @Singleton @ActivityScope @UserScope @ActivityScope @ActivityScope Sub Component LoginComponent accesses any dependencies of DaggerAppComponent directly as inner class can access outer class members.

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DaggerUserComponent • schedulerProvider • pokemon DaggerAppComponent • schedulerProvider() : @Singleton • userManager : @Singleton LoginComponentImpl <> AppComponent fun schedulerProvider() HomeComponentImpl ItemsComponentImpl @Singleton @ActivityScope @UserScope @ActivityScope @ActivityScope Sub Component LoginComponent accesses any dependencies of DaggerAppComponent directly as inner class can access outer class members. Dependent Component UserComponent accesses any dependencies of DaggerAppComponent via an interface of AppComponent.

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@ragdroid @droidconDE Custom Scope Advantages • Dependency Lifecycle Management • Modularized code

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@ragdroid @droidconDE Some Limitations • Repetitive Injection code • Class knows about it’s Injector

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@ragdroid @droidconDE Some Limitations Dagger 2 Android

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INTERMEDIATE CONCEPTS “DEFEAT THE DAHAKA”

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@ragdroid @droidconDE @BINDS

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@Module public class AppModule { @Provides BaseSchedulerProvider providerSchedulerProvider(SchedulerProvider provider) { return provider; } } @Binds

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@Module public class AppModule { @Provides BaseSchedulerProvider providerSchedulerProvider(SchedulerProvider provider) { return provider; } } @Binds @Module public abstract class AppModule { @Binds abstract BaseSchedulerProvider providerSchedulerProvider(SchedulerProvider provider); }

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@ragdroid @droidconDE MULTIBINDING

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MultiBinding @IntoSet @Provides String - “Hello” @Provides String - “Hi” @Provides String - “How are you?”

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@Provides String - “Hello” @Provides String - “Hi” @Provides String - “How are you?” @IntoSet @IntoSet @IntoSet MultiBinding @IntoSet

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@Provides Set {“Hello”, “Hi”, “How are you?”} MultiBinding @IntoSet

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MultiBinding @IntoMap <> Contract.Presenter MapPresenter JustPresenter TakePresenter

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MultiBinding @IntoMap @Provides MapPresenter mapPresenter @Provides JustPresenter justPresenter @Provides TakePresenter takePresenter

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MultiBinding @IntoMap @Provides MapPresenter mapPresenter @Provides JustPresenter justPresenter @Provides TakePresenter takePresenter @IntoMap @IntoMap @IntoMap

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MultiBinding @IntoMap @Provides MapPresenter mapPresenter @Provides JustPresenter justPresenter @Provides TakePresenter takePresenter @IntoMap @IntoMap @IntoMap @ClassKey(MapPresenter.java) @ClassKey(JustPresenter.java) @ClassKey(TakePresenter.java)

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MultiBinding @IntoMap @Provides Map { mapPresenter, justPresenter, takePresenter }

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DAGGER 2 ANDROID “BEFRIEND THE BEAST”

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@ragdroid @droidconDE DAHAKA APPLICATION

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class DahakaApplication : Application(), HasActivityInjector { @Inject internal lateinit var activityInjector: DispatchingAndroidInjector … override fun activityInjector(): AndroidInjector { return activityInjector } … } DahakaApplication

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class DahakaApplication : Application(), HasActivityInjector { @Inject internal lateinit var activityInjector: DispatchingAndroidInjector … override fun activityInjector(): AndroidInjector { return activityInjector } … } DahakaApplication

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class DahakaApplication : Application(), HasActivityInjector { @Inject internal lateinit var activityInjector: DispatchingAndroidInjector … override fun activityInjector(): AndroidInjector { return activityInjector } … } DahakaApplication

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class DahakaApplication : Application(), HasActivityInjector { @Inject internal lateinit var activityInjector: DispatchingAndroidInjector … override fun activityInjector(): AndroidInjector { return activityInjector } … } DahakaApplication

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public interface HasActivityInjector { AndroidInjector activityInjector(); } HasActivityInjector

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HasActivityInjector • A simple interface. • Implementing class “Has” ActivityInjector. • ActivityInjector = AndroidInjector. public interface HasActivityInjector { AndroidInjector activityInjector(); }

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HasActivityInjector <> HasActivityInjector fun activityInjector() : AndroidInjector

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HasActivityInjector <> HasActivityInjector fun activityInjector() : AndroidInjector DahakaApplication • activityInjector : DispatchingAndroidInjector

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HasActivityInjector <> HasActivityInjector fun activityInjector() : AndroidInjector DahakaApplication • activityInjector : DispatchingAndroidInjector <> AndroidInjector fun inject(Activity instance)

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HasActivityInjector <> HasActivityInjector fun activityInjector() : AndroidInjector DahakaApplication • activityInjector : DispatchingAndroidInjector DispatchingAndroidInjector • inject(Activity activity) • injectorFactories : Map <> AndroidInjector fun inject(Activity instance)

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DispatchingAndroidInjector • Injects members for Android types : Activity, Fragment, etc • Has a Map> injectorFactories.

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DispatchingAndroidInjector Provider LoginActivity.class Class Provider> DispatchingAndroidInject • gets the Subcomponent.Builder from Map. • creates an instance using Builder. • calls component.inject(instance) to perform injections. • Injects members for Android types : Activity, Fragment, etc • Has a Map> injectorFactories.

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Provider HomeActivity.class ItemsActivity.class Provider Provider ProfileFragment.class MovesFragment.class Provider Class Provider> Provider StatsFragment.class DispatchingAndroidInjector Provider LoginActivity.class Class Provider> DispatchingAndroidInject DispatchingAndroidInject

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@ragdroid @droidconDE APP COMPONENT

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@Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class, AppBindingModule::class, AndroidSupportInjectionModule::class)) interface AppComponent : AndroidInjector { … } AppComponent

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AppBindingModule @Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class, AppBindingModule::class, AndroidSupportInjectionModule::class)) interface AppComponent : AndroidInjector { … } AppComponent

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@Module abstract class AppBindingModule { @ContributesAndroidInjector(modules = arrayOf(LoginModule::class)) @ActivityScope internal abstract fun loginActivity(): LoginActivity } AppBindingModule

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@ContributesAndroidInjector @Module abstract class AppBindingModule { @ContributesAndroidInjector(modules = arrayOf(LoginModule::class)) @ActivityScope internal abstract fun loginActivity(): LoginActivity } AppBindingModule

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@Module abstract class AppBindingModule { @ContributesAndroidInjector(modules = arrayOf(LoginModule::class)) @ActivityScope internal abstract fun loginActivity(): LoginActivity } AppBindingModule • If your Module is stateless. • If your Subcomponent.Builder is simple and doesn’t need to bind anything extra. • @ContributesAndroidInjector will generate the SubComponent for you. • No need to create LoginActivitySubcomponent class in the above case. @ContributesAndroidInjector AppBindingModule

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@Module abstract class AppBindingModule { @ContributesAndroidInjector(modules = arrayOf(LoginModule::class)) @ActivityScope internal abstract fun loginActivity(): LoginActivity } AppBindingModule @Module abstract class LoginModule { @Binds abstract fun provideLoginPresenter(loginPresenter: LoginPresenter): LoginContract.Presenter } LoginModule

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@Module(subcomponents = LoginActivitySubcomponent.class) public abstract class AppBindingModule_LoginActivity { @Binds @IntoMap @ActivityKey(LoginActivity.class) abstract AndroidInjector.Factory bindAndroidInjectorFactory( LoginActivitySubcomponent.Builder builder); @Subcomponent(modules = LoginModule.class) @ActivityScope public interface LoginActivitySubcomponent extends AndroidInjector { @Subcomponent.Builder abstract class Builder extends AndroidInjector.Builder {} } } LoginBindingModule(Generated)

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@Module(subcomponents = LoginActivitySubcomponent.class) public abstract class AppBindingModule_LoginActivity { @Binds @IntoMap @ActivityKey(LoginActivity.class) abstract AndroidInjector.Factory bindAndroidInjectorFactory( LoginActivitySubcomponent.Builder builder); @Subcomponent(modules = LoginModule.class) @ActivityScope public interface LoginActivitySubcomponent extends AndroidInjector { @Subcomponent.Builder abstract class Builder extends AndroidInjector.Builder {} } } LoginBindingModule(Generated)

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@Module(subcomponents = LoginActivitySubcomponent.class) public abstract class AppBindingModule_LoginActivity { @Binds @IntoMap @ActivityKey(LoginActivity.class) abstract AndroidInjector.Factory bindAndroidInjectorFactory( LoginActivitySubcomponent.Builder builder); @Subcomponent(modules = LoginModule.class) @ActivityScope public interface LoginActivitySubcomponent extends AndroidInjector { @Subcomponent.Builder abstract class Builder extends AndroidInjector.Builder {} } } LoginBindingModule(Generated)

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@Module(subcomponents = LoginActivitySubcomponent.class) public abstract class AppBindingModule_LoginActivity { @Binds @IntoMap @ActivityKey(LoginActivity.class) abstract AndroidInjector.Factory bindAndroidInjectorFactory( LoginActivitySubcomponent.Builder builder); @Subcomponent(modules = LoginModule.class) @ActivityScope public interface LoginActivitySubcomponent extends AndroidInjector { @Subcomponent.Builder abstract class Builder extends AndroidInjector.Builder {} } } LoginBindingModule(Generated)

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@Module(subcomponents = LoginActivitySubcomponent.class) public abstract class AppBindingModule_LoginActivity { @Binds @IntoMap @ActivityKey(LoginActivity.class) abstract AndroidInjector.Factory bindAndroidInjectorFactory( LoginActivitySubcomponent.Builder builder); @Subcomponent(modules = LoginModule.class) @ActivityScope public interface LoginActivitySubcomponent extends AndroidInjector { @Subcomponent.Builder abstract class Builder extends AndroidInjector.Builder {} } } LoginBindingModule(Generated)

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AndroidSupportInjectionModule AppBindingModule @Singleton @Component(modules = arrayOf(AppModule::class, ApiModule::class, AppBindingModule::class, AndroidSupportInjectionModule::class)) interface AppComponent : AndroidInjector { … } AppComponent

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@Beta @Module(includes = AndroidInjectionModule.class) public abstract class AndroidSupportInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> supportFragmentInjectorFactories(); private AndroidSupportInjectionModule() {} } @Beta @Module public abstract class AndroidInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> activityInjectorFactories(); @Multibinds abstract Map, AndroidInjector.Factory> fragmentInjectorFactories(); … } AndroidSupportInjectionModule (dagger.android)

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@Beta @Module(includes = AndroidInjectionModule.class) public abstract class AndroidSupportInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> supportFragmentInjectorFactories(); private AndroidSupportInjectionModule() {} } @Beta @Module public abstract class AndroidInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> activityInjectorFactories(); @Multibinds abstract Map, AndroidInjector.Factory> fragmentInjectorFactories(); … } AndroidSupportInjectionModule (dagger.android)

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@Beta @Module(includes = AndroidInjectionModule.class) public abstract class AndroidSupportInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> supportFragmentInjectorFactories(); private AndroidSupportInjectionModule() {} } @Beta @Module public abstract class AndroidInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> activityInjectorFactories(); @Multibinds abstract Map, AndroidInjector.Factory> fragmentInjectorFactories(); … } AndroidSupportInjectionModule (dagger.android)

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@Beta @Module(includes = AndroidInjectionModule.class) public abstract class AndroidSupportInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> supportFragmentInjectorFactories(); private AndroidSupportInjectionModule() {} } @Beta @Module public abstract class AndroidInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> activityInjectorFactories(); @Multibinds abstract Map, AndroidInjector.Factory> fragmentInjectorFactories(); … } AndroidSupportInjectionModule (dagger.android)

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@Beta @Module(includes = AndroidInjectionModule.class) public abstract class AndroidSupportInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> supportFragmentInjectorFactories(); private AndroidSupportInjectionModule() {} } @Beta @Module public abstract class AndroidInjectionModule { @Multibinds abstract Map, AndroidInjector.Factory> activityInjectorFactories(); @Multibinds abstract Map, AndroidInjector.Factory> fragmentInjectorFactories(); … } AndroidSupportInjectionModule (dagger.android)

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@ragdroid @droidconDE LOGIN ACTIVITY

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public class LoginActivity { @Inject LoginContract.Presenter presenter; @Override protected void onCreate(Bundle savedInstanceState) { AndroidInjection.inject(this); } } LoginActivity

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AndroidInjection.inject(LoginActivity) LoginActivity public class LoginActivity { @Inject LoginContract.Presenter presenter; @Override protected void onCreate(Bundle savedInstanceState) { AndroidInjection.inject(this); } }

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje AndroidInjection

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje AndroidInjection DaggerAppComponent

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje AndroidInjection DaggerAppComponent AppBindingModule_LoginActivity DispatchingAndroidInjector

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje AndroidInjection DaggerAppComponent AppBindingModule_LoginActivity DispatchingAndroidInjector

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AndroidInjection.inject(LoginActivity) AndroidInjection.inje AndroidInjection DaggerAppComponent AppBindingModule_LoginActivity DispatchingAndroidInjector ApiModule_ProvideRetrofitFactory AppModule_ProviderSchedulerProviderFactory ApiModule_ProvidePokemonServiceFactory ApiModule_ProvideRetrofitFactory AppModule_ProviderSchedulerProviderFactory ApiModule_ProvidePokemonServiceFactory

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@ragdroid @droidconDE BEFRIEND THE BEAST “You can not change your fate, No droid can.”

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AndroidInjection.inject(LoginActivity)

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AndroidInjection.inject(LoginActivity) activity .getApplication() LoginActivity

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AndroidInjection.inject(LoginActivity) activity .getApplication() LoginActivity application .activityInjector() DahakaApplication : HasActivityInjector

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AndroidInjection.inject(LoginActivity) activity .getApplication() LoginActivity application .activityInjector() DahakaApplication : HasActivityInjector activityInjector .inject(activity) DispatchingAndroidInjector : AndroidInjector

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AndroidInjection.inject(LoginActivity) activity .getApplication() LoginActivity application .activityInjector() DahakaApplication : HasActivityInjector activityInjector .inject(activity) DispatchingAndroidInjector : AndroidInjector

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DispatchingAndroidInjector.inject(LoginActivity) injectorFactories .get(LoginActivity.class) DispatchingAndroidInjector : AndroidInjector

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DispatchingAndroidInjector : AndroidInjector Factory : LoginSubcomponent.Builder injectorFactories .get(LoginActivity.class) DispatchingAndroidInjector.inject(LoginActivity) builder .build()

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DispatchingAndroidInjector : AndroidInjector Factory : LoginSubcomponent.Builder component .inject(activity) LoginSubcomponent injectorFactories .get(LoginActivity.class) DispatchingAndroidInjector.inject(LoginActivity) builder .build()

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DispatchingAndroidInjector : AndroidInjector builder .build() Factory : LoginSubcomponent.Builder component .inject(activity) LoginSubcomponent DispatchingAndroidInjector.inject(LoginActivity) injectorFactories .get(LoginActivity.class)

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• DaggerApplication • DaggerActivity • DaggerBroadcastReceiver • DaggerContentProvider • DaggerFragment • DaggerIntentService • DaggerService Dagger Boilerplate classes

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@ragdroid @droidconDE TESTING WITH DAGGER 2 ANDROID

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public class LoginActivity { @Inject LoginContract.Presenter presenter; @Override protected void onCreate(Bundle savedInstanceState) { AndroidInjection.inject(this); } } LoginActivity

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public class LoginActivity { @Inject LoginContract.Presenter presenter; @Override protected void onCreate(Bundle savedInstanceState) { AndroidInjection.inject(this); } } LoginActivity

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@Module public class TestLoginModule { @Mock LoginPresenter loginPresenter; public TestLoginModule() { MockitoAnnotations.initMocks(this); } @Provides @ActivityScope public LoginContract.Presenter provideLoginPresenter() { return loginPresenter; } } TestLoginModule

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@Module public class TestLoginModule { @Mock LoginPresenter loginPresenter; public TestLoginModule() { MockitoAnnotations.initMocks(this); } @Provides @ActivityScope public LoginContract.Presenter provideLoginPresenter() { return loginPresenter; } } TestLoginModule

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@Module public class TestLoginModule { @Mock LoginPresenter loginPresenter; public TestLoginModule() { MockitoAnnotations.initMocks(this); } @Provides @ActivityScope public LoginContract.Presenter provideLoginPresenter() { return loginPresenter; } } TestLoginModule

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Demo Code • Dahaka Demo : https://github.com/ragdroid/Dahaka • Branches : • dagger-android : Pokemon app using dagger-android (With Tests, Fragments) • dagger-android-dependent-comp : dagger-android with Dependent Component • dagger-android-dependent-comp-kotlin : In Kotlin • subcomponent : UserComponent as subcomponent • dependent-component : UserComponent as dependent component • dependent-component-kotlin : In Kotlin

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@ragdroid @droidconDE Dagger 2 Android = Dahaka • D • A • H • A • K • A Dagger Android HasActivityInjector AndroidInjection Keys AndroidInjector

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@ragdroid @droidconDE Dagger 2 Android “You can not change your fate, No droid can” Let’s befriend the beast instead.

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Acknowledgements • Dagger Recipies : Miroslaw Stanek (@froger_mcs) https://about.me/froger_mcs • todo-mvp-dagger : Mike Nakhimovich (@friendlyMikhail ) https://github.com/googlesamples/android-architecture/tree/todo-mvp-dagger • Android Dialogs : Mike Nakhimovich https://www.youtube.com/watch?v=KwRXQ6nT7jQ • Proof Reading : Ritesh Gupta (@_riteshhh) • Migrate to Kotlin : Ravindra Kumar (@ravidsrk)

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What Next? • Dagger Documentation : https://google.github.io/dagger// • todo-mvp-dagger : Mike Nakhimovich (@friendlyMikhail ) https://github.com/googlesamples/android-architecture/tree/todo-mvp-dagger • Android Dialogs : Mike Nakhimovich https://www.youtube.com/watch?v=KwRXQ6nT7jQ • Dagger Example https://github.com/ragdroid/Dahaka • Testing article https://android.jlelse.eu/testing-your-app-with-dagger-2-c91cdc0860fb • Dagger and the Dahaka Series : https://medium.com/@ragdroid

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Other References • Theme : Prince of Persia https://en.wikipedia.org/wiki/Prince_of_Persia • Dahaka https://files.gamebanana.com/img/ico/sprays/dahaka.png • Dagger https://in.pinterest.com/pin/397442735844321339/ • Android http://www.pngmart.com/files/4/Android-PNG-Image.png

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@ragdroid @droidconDE CUT SCENES

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Dagger 2 Android “Defeat the Dahaka" Garima Jain @ragdroid

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Dagger 2 Android “Defeat the Dahaka" Garima Jain @ragdroid

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FUELED http://fueled.com/garima [email protected] VIELEN DANK THANK YOU

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FUELED http://fueled.com/garima [email protected] Q & A DISCUSSION @ragdroid