Java 框架如何促进移动应用程序的模块化开发？（

@Component(modules = {AppModule.class})

public interface AppComponent { zvvq好，好zvvq

void inject(MainActivity activity);

}

@Module 内容来自zvvq

public class AppModule {

@Provides copyright zvvq

public UserRepository provideUserRepository() { zvvq

return new UserRepository(); zvvq好，好zvvq

} 本文来自zvvq

} zvvq

public class MainActivity {

内容来自samhan666

@Inject zvvq好，好zvvq

UserRepository userRepository;

// ... 内容来自samhan

}

@GET("/users/{id}") 本文来自zvvq

Call<User> getUser(@Path("id") int id);

OkhttpClient.Builder builder = new OkHttpClient.Builder();

内容来自samhan

Retrofit retrofit = new Retrofit.Builder() copyright zvvq

.client(builder.build())

内容来自samhan

.baseUrl("https://api.example.com")

.build(); 本文来自zvvq

UserService userService = retrofit.create(UserService.class); 内容来自zvvq

// ...

zvvq

Observable<String> observable = Observable.just("Hello, world!");

Observable<String> mappedObservable = observable.map(s -> s.toUpperCase());

内容来自samhan666

mappedObservable.subscribe(s -> System.out.println(s));

zvvq好，好zvvq

// ...

public class UserViewModel extends ViewModel { 内容来自zvvq

public LiveData<User> userLiveData = new MutableLiveData<>();

zvvq

// ... zvvq

}

内容来自zvvq，别采集哟

public class MainActivity extends AppCompatActivity { zvvq好，好zvvq

@Override 内容来自zvvq，别采集哟

protected void onCreate(Bundle savedInstanceState) { zvvq好，好zvvq

super.onCreate(savedInstanceState);

内容来自samhan

UserViewModel viewModel = new ViewModelProvider(this).get(UserViewModel.class); 内容来自zvvq

viewModel.userLiveData.observe(this, user -> {

// Update UI with user data

内容来自samhan

}); zvvq好，好zvvq

} 内容来自zvvq，别采集哟

}