我遇到了一些Android架构组件的问题。我正在尝试做的是从视图模型，我将执行仓库类内的函数。以下是我的视图模型：

private final ReservationRepository reservationRepository;
private final UserRepository userRepository;
private LiveData<List<ReservationEntity>> reservations;

@Inject
public ReservationViewModel(ReservationRepository reservationRepository, UserRepository userRepository) {
    this.reservationRepository = reservationRepository;
    this.userRepository = userRepository;
    reservations = reservationRepository.loadReservations();
}

public LiveData<List<ReservationEntity>> getAllReservations() {
    return reservations;
}

然后在我的存储库类中：

private final ReservationDao reservationDao;

@Inject
public ReservationRepository(ReservationDao reservationDao) {
    this.reservationDao = reservationDao;
}

public LiveData<List<ReservationEntity>> loadReservations() {
    return reservationDao.getAllReservation();
}

在我的DAO课程中：

@Query("SELECT * FROM reservation")
LiveData<List<ReservationEntity>> getAllReservation();

我有一个AppModule来@提供@Inject：

@Provides
@Singleton
ReservationDatabase provideReservationDatabase(Application application) {
    return Room.databaseBuilder(application,ReservationDatabase.class,
            ReservationDatabase.DATABASE_NAME).allowMainThreadQueries().build();
}

@Provides
@Singleton
ReservationDao provideReservationDao(ReservationDatabase reservationDatabase) {
    return reservationDatabase.reservationDao();
}

我成功地构建了这个项目。但是，成功构建gradle之后，它并没有将应用安装到模拟器上。
谢谢！