Dagger 2如何为基本活动组件创建一个模块，并为所有MVP组件创建一个单独的模块

Question

@inject
public ApiClient mClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    mManager = new SharedPreferencesManager(this);
    DaggerInjector.get().inject(this);
}

public class DaggerInjector {
private static AppComponent appComponent = DaggerAppComponent.builder().appModule(new AppModule()).build();

public static AppComponent get() {
    return appComponent;
}
}



@Component(modules = {AppModule.class,  ApiModule.class, MvpModule.class})
@Singleton
public interface AppComponent {

    void inject(BaseActivity activity);


}

API

@Singleton
@Component(modules = {ApiModule.class})
public interface ApiComponent {
    void inject( BaseActivity activity);
}



@Module
public class ApiModule {

    @Provides
    @Singleton
    public ApiClient getApiClient(){
        return new ApiClient();
    }
}

MVP

@Singleton
@Component(modules = {MvpModule.class})
public interface MvpComponent {
    void inject(BaseActivity activity);
}

@Module
public class MvpModule {

    @Provides
    @Singleton
    public MvpPresenter getMvpPresenter(){ return new MvpPresenter();}
}



Error:(16, 10) error: ApiClient cannot be provided without an @Inject constructor or from an @Provides- or @Produces-annotated method. This type supports members injection but cannot be implicitly provided.
ApiClient is injected at
...BaseActivity.ApiClient
...BaseActivity is injected at
MvpComponent.inject(activity)

Answer 1

我发现了我的问题。我需要使用一个子组件。

@Singleton
@Subcomponent(modules = {MvpModule.class})
public interface MvpComponent {
    void inject(BaseActivity activity);
}

@Module
public class MvpModule {

    @Provides
    @Singleton
    public MvpPresenter getMvpPresenter(){ return new MvpPresenter();}
}

见

dagger-我们应该为每个活动/片段创建每个组件和模块吗