如何使用Dagger2在ViewModel构造函数中注入WorkManager实例？

implementation 'com.google.dagger:dagger:2.x'
annotationProcessor 'com.google.dagger:dagger-compiler:2.x'

@Component
public interface AppComponent {
    WorkManager provideWorkManager();
}

@Module
public class AppModule {
    @Provides
    WorkManager provideWorkManager() {
        return WorkManager.getInstance();
    }
}

public class MyViewModel extends ViewModel {
    private WorkManager workManager;

    @Inject
    public MyViewModel(WorkManager workManager) {
        this.workManager = workManager;
    }
}

public class MyApp extends Application {
    private AppComponent appComponent;

    @Override
    public void onCreate() {
        super.onCreate();
        appComponent = DaggerAppComponent.create();
    }

    public AppComponent getAppComponent() {
        return appComponent;
    }
}

public class MyActivity extends AppCompatActivity {
    @Inject
    MyViewModel myViewModel;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ((MyApp) getApplication()).getAppComponent().inject(this);
    }
}