Dagger 2不生成子组件实现

Question

我已经开始设置匕首2，并面临一个奇怪的问题，看起来像一个bug对我来说。

我有1个主组件和2个子组件，我‘加’在父组件中。我为每个子组件使用不同的作用域。问题是，我可以很容易地为第一个子组件进行字段注入，但我不能为第二个子组件进行相同的注入。注入的字段保持null%s。

@Singleton
@Component(modules = { WalletSaverAppModule.class })
public interface MyAppComponent {
  TrackingComponent plus(TrackingModule module);

  DashboardComponent plus(DashboardModule module);
}

@PerActivity @Subcomponent(modules = { DashboardModule.class })
public interface DashboardComponent {
  void inject(MainActivity activity);
}

@PerService @Subcomponent(modules = { TrackingModule.class })
public interface TrackingComponent {
  void inject(IntentService context);
}

public class TrackingService extends IntentService {
  @Inject CallCase mCallCase;
  @Inject CallModelMapper mCallModelMapper;
  ...

@Override protected void onHandleIntent(Intent intent) {
((MyApp) getApplication()).getAppComponent().plus(new TrackingModule(this)).inject(this);
// ---> here the both fields are null
...

我正在注射的对象：

@Singleton public class CallCase {
  private CallRepository mCallRepository;

  @Inject public CallCase(final CallRepository userRepository) {
    mCallRepository = userRepository;
  }

  public Observable<Call> execute() {
    ...
  }
}

@Singleton public class CallModelMapper {
  @Inject CallModelMapper() {
  }

  public CallModel transform(@NonNull final Call callEntity) {
    ...
  }
}

这两个对象都具有@singleton作用域（作为它们的构造函数字段）。会不会是范围冲突？

---更新---

我已经检查了由Dagger2生成的类(DaggerMyAppComponent)，我正在MyApp中使用它来构建应用程序组件。我发现了第一个和第二个组件实现之间的区别。

private final class DashboardComponentImpl implements DashboardComponent {
    private final DashboardModule dashboardModule;

    private Provider<DashboardMvp.Presenter> providesPresenterProvider;

    private MembersInjector<MainActivity> mainActivityMembersInjector;

    private DashboardComponentImpl(DashboardModule dashboardModule) {
      this.dashboardModule = Preconditions.checkNotNull(dashboardModule);
      initialize();
    }

    private void initialize() {...}

    @Override
    public void inject(MainActivity activity) {...}
  }

private final class TrackingComponentImpl implements TrackingComponent {
    private final TrackingModule trackingModule;

    private TrackingComponentImpl(TrackingModule trackingModule) {
      this.trackingModule = Preconditions.checkNotNull(trackingModule);
      // ---> look, missing call initialize() <---
    }

    @Override
    public void inject(IntentService context) {...}
  }

Answer 1

在TrackingComponent中，为什么要注入IntentService。也许改成TrackingService会有帮助

void inject(TrackingService context);