Conductor Injection

BaseActivity.java

class BaseActivity extends AppCompatActivity {
  private ActivityComponent activityComponent;
  
  @Override public void onCreate(Bundle savedInstanceState) {
    activityComponent = DaggerActivityComponent.builder()
      .appComponent(((MyApp) getApplicationContext()).getComponent())
      .build();
    
    activityComponent.inject(this);
  }
  
  public ActivityComponent getComponent() {
    return activityComponent;
  }
}

BaseController.java

public abstract class BaseController extends Controller {
  private boolean injected = false;
  
  @NonNull @Override
  final protected View onCreateView(LayoutInflater inflater, ViewGroup container) {
    inject(inflater.getContext());
    
    //...create view...
  }

  private void inject(Context context) {
    if (!created) {
      injected = true;
      onInject((BaseActivity) context).getComponent());
    }
  }
  
  protected abstract void onInject(ActivityComponent component);
}

SomeController.java

class SomeController extends BaseController {
  protected void onInject(ActivityComponent component) {
    component.inject(this);
  }
}