Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Dagger 2
Search
José Caique Oliveira
February 16, 2017
Programming
1
110
Dagger 2
Slides da palestra sobre Dagger 2
José Caique Oliveira
February 16, 2017
Tweet
Share
More Decks by José Caique Oliveira
See All by José Caique Oliveira
Kotlin Flow
jcaiqueoliveira
0
84
Coroutines And Flow
jcaiqueoliveira
2
88
Testing your app
jcaiqueoliveira
0
240
Modularizando seu app
jcaiqueoliveira
0
57
Nova Api de Localização Android
jcaiqueoliveira
0
58
Arquitetura para android
jcaiqueoliveira
6
310
Kotlin por onde começar?
jcaiqueoliveira
1
79
Introdução ao Android
jcaiqueoliveira
1
66
Arquitetura para projetos Android
jcaiqueoliveira
1
210
Other Decks in Programming
See All in Programming
"config" ってなんだ? / What is "config"?
okashoi
0
240
Amazon SQSコンシューマー疎結合への旅 - 出張! #DevelopersIO IT技術ブログの中の人が語る勉強会 #3
quiver
0
220
try!Swift Tokyo 2024 参加報告 LT
akidon0000
1
220
[技育CAMPアカデミア]アイディアを形に!【超入門】スマホアプリ開発〜リリースまでの流れをご紹介
teamlab
PRO
0
360
PostmanでAPIの動作確認が楽になった話
h455h1
0
160
Goのmultiple errorsについて (2024年4月版)
syumai
1
370
Behind VS Code Extensions for JavaScript / TypeScript Linnting and Formatting
unvalley
5
880
Blue/Greenデプロイの導入による 運用フローの改善
kudoas
1
360
Front-end application development, Symfony-style(s)
dunglas
2
2k
GitHub Actionsで泣かないためにやっておきたい設定 / Recommended GHA settings to avoid crying
pinkumohikan
3
520
if constexpr文はテンプレート世界のラムダ式である
faithandbrave
3
630
見た目から始める生産性向上
ikumatadokoro
7
780
Featured
See All Featured
GraphQLとの向き合い方2022年版
quramy
31
12k
The Cult of Friendly URLs
andyhume
74
5.7k
What's in a price? How to price your products and services
michaelherold
237
11k
Fashionably flexible responsive web design (full day workshop)
malarkey
398
65k
ピンチをチャンスに:未来をつくるプロダクトロードマップ #pmconf2020
aki_iinuma
77
42k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
20
1.6k
Large-scale JavaScript Application Architecture
addyosmani
504
110k
The Cost Of JavaScript in 2023
addyosmani
15
3.8k
Optimizing for Happiness
mojombo
370
69k
Art, The Web, and Tiny UX
lynnandtonic
288
19k
The Brand Is Dead. Long Live the Brand.
mthomps
48
28k
What's new in Ruby 2.0
geeforr
337
31k
Transcript
Dagger 2 Caique Oliveira
Introdução 1
Introdução ◦ Inversão de controle ◦ Injeção de dependência
O que é ◦ Framework para injeção de dependência ◦
Fork do Dagger 1 ◦ JSR 330
Alguns ganhos ◦ Evita boilerplate ◦ Organização das dependências ◦
Fácil criação de testes
Vamos ao Dagger 2 2
Annotations ◦ Module ◦ Provides ◦ Component ◦ SubComponent ◦
Scope ◦ Inject ◦ Reusable ◦ Singleton
Module Identifica uma classe provedora de dependências @Module public class
LoginModule
Provides Identifica que um método é um provedor de dependência
@Module public class LoginModule { @Provides AuthenticationLayer providesAuthenticationLayer(Context context) { return new AuthenticationLayer(context); } }
Quem prover a dependência de um provider ?
Outro “provedor” @Module public class ApplicationModule { private Application application;
public ApplicationModule(Application application) { this.application = application; } @Provides Application providesApplication() { return application; } @Provides Context providesContext(Application application) { return application.getBaseContext(); } }
Component Define quais módulos podem ser utilizados e quem pode
utilizar tais módulos @Component(modules = { ApplicationModule.class}) public interface MainComponent { void inject(LoginActivity activity); }
SubComponent Repartição do grafo de dependências @ActivityScope @Subcomponent(modules = {LoginModule.class})
public interface ActivityComponent { void inject(LoginActivity activity); } @Component(modules = {ApplicationModule.class}) public interface MainComponent { ActivityComponent activityComponent(); FragmentComponent fragmentComponent(); }
Scopo Altera o ciclo de vida de um objeto @Scope
@Retention(RetentionPolicy.RUNTIME) public @interface ActivityScope { }
Reusable Indica que um dado objeto pode ser reutilizado @Module
public class ManagerModule { @Reusable @Provides DataController providesDataController(Context context) { return new DataController(context); } @Provides @Reusable AuthenticationLayer providesAuthenticationLayer(Context context, AuthenticationClient authenticationClient) { return new AuthenticationLayer(context,authenticationClient); } }
Singleton Indica que se precisa da mesma instância do objeto
@Module public class ManagerModule { @Reusable @Singleton DataController providesDataController(Context context) { return new DataController(context); } @Provides @Singleton AuthenticationLayer providesAuthenticationLayer(Context context, AuthenticationClient authenticationClient) { return new AuthenticationLayer(context,authenticationClient); } }
Inject Indica que é necessário injetar uma depêndencia public class
LoginActivity extends BaseActivity { @Inject public LoginPresenter loginPresenter; @Override public void onStart() { super.onStart(); ((Application) getApplication()).getMainComponent().activityComponent().inject(this); loginPresenter.bindView(this, this); } }
Inject Indica que é necessário injetar uma depêndencia public class
Application extends CoreApplication { private MainComponent mainComponent; @Override public void onCreate() { super.onCreate(); initDagger(); } private void initDagger() { mainComponent = DaggerMainComponent.builder().applicationModule(new ApplicationModule(this)).build(); } public MainComponent getMainComponent() { return mainComponent; } }
Refatorando para o Dagger 2 3
Refatorando - LoginPresenterImpl class LoginPresenterImpl implements LoginPresenter, OnLoginFinishedListener { private
Context context; private LoginView loginView; private LoginInteractor loginInteractor; LoginPresenterImpl(Context context, LoginView loginView) { this.context = context; this.loginView = loginView; this.loginInteractor = new LoginInteractorImpl(context); } ... }
Refatorando - LoginPresenterImpl class LoginPresenterImpl implements LoginPresenter, OnLoginFinishedListener { private
Context context; private LoginView loginView; private LoginInteractor loginInteractor; @Inject LoginPresenterImpl(LoginInteractor loginInteractor) { this.loginInteractor = loginInteractor; } @Override public void bindView(Context context, LoginView view) { this.context = context; this.loginView = view; } }
Refatorando - LoginInteractorImpl class LoginInteractorImpl implements LoginInteractor { private Context
context; LoginInteractorImpl(Context context) { this.context = context; } @Override public void authenticate(String email, String password, OnLoginFinishedListener listener) { //... new AuthenticationLayer(context).postAuthenticate(new AuthenticateRequest(email, password)); } @Override public void busAuthenticate(AuthenticateResponse authenticateResponse, OnLoginFinishedListener listener) { if (authenticateResponse.isSuccess()) { saveInformations(authenticateResponse); new UserManager().deleteAll(); new UserLayer(context).getUsers(); }else{ //... } } private void saveInformations(AuthenticateResponse authenticateResponse) { DataController dataController = new DataController(context); dataController.writeData(Constants.SharedPreferences.CONTROLLER_EMAIL, authenticateResponse.getEmail()); } }
Refatorando - LoginInteractorImpl class LoginInteractorImpl implements LoginInteractor { private UserLayer
userLayer; private Context context; private AuthenticationLayer authenticationLayer; private DataController dataController; private UserManager userManager; @Inject LoginInteractorImpl(Context context, AuthenticationLayer authenticationLayer, DataController dataController, UserManager userManager, UserLayer userLayer) { this.authenticationLayer = authenticationLayer; this.context = context; this.dataController = dataController; this.userManager = userManager; this.userLayer = userLayer; } … }
LoginModule @Module public class LoginModule { @Provides AuthenticationLayer providesAuthenticationLayer(Context context)
{ return new AuthenticationLayer(context); } @Provides @Reusable LoginInteractor providesLoginInteractor(Context context, AuthenticationLayer layer, DataController dataController, UserManager userManager, UserLayer userLayer) { return new LoginInteractorImpl(context, layer, dataController, userManager, userLayer); } @Provides @Reusable LoginPresenter providesLoginPresenter(LoginInteractor loginInteractor) { return new LoginPresenterImpl(loginInteractor); }
LoginModule @Module public class LoginModule { @Provides @Reusable DataController providesDataController(Context
context) { return new DataController(context); } @Provides @Reusable UserLayer providesUserLayer(Context context) { return new UserLayer(context); } @Provides @Reusable UserManager providesUserManager() { return new UserManager(); } }
Grafo de dependências Presenter Interactor UserManager AuthenticationLayer UserLayer DataController
Obrigado! Dúvidas?
Olá! Contate-me https://github.com/jcaiqueoliveira https://www.linkedin.com/in/caique-oliveira-43806895/
[email protected]