Java 框架如何促进移动应用程序的模块化开发？（

@Component(modules = {AppModule.class}) 内容来自zvvq，别采集哟

public interface AppComponent {

void inject(MainActivity activity); 本文来自zvvq

} copyright zvvq

@Module

public class AppModule {

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@Provides zvvq

public UserRepository provideUserRepository() {

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return new UserRepository(); copyright zvvq

} 内容来自zvvq

}

public class MainActivity {

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@Inject

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UserRepository userRepository;

// ...

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} copyright zvvq

@GET("/users/{id}") zvvq好，好zvvq

Call<User> getUser(@Path("id") int id); 内容来自samhan

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

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Retrofit retrofit = new Retrofit.Builder() 内容来自zvvq

.client(builder.build())

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

.build(); 内容来自samhan

UserService userService = retrofit.create(UserService.class);

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// ... 内容来自samhan

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

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

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

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// ... 内容来自zvvq

public class UserViewModel extends ViewModel {

public LiveData<User> userLiveData = new MutableLiveData<>(); 内容来自samhan

// ...

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} 内容来自samhan666

public class MainActivity extends AppCompatActivity {

@Override

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protected void onCreate(Bundle savedInstanceState) {

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super.onCreate(savedInstanceState);

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UserViewModel viewModel = new ViewModelProvider(this).get(UserViewModel.class);

viewModel.userLiveData.observe(this, user -> { 内容来自samhan666

// Update UI with user data

}); zvvq好，好zvvq

}

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}