首先是我的repo：https://github.com/Berkayszk/FiWoApp
在我的应用程序中，我从API提取数据，并在Recyclerview中使用PagingData显示。我已经在Details片段中创建了一个类似的部分，我正在考虑通过调用类似的API来提取我的数据，但我看到我的数据没有加载，无论我如何努力尝试，我无法理解为什么没有发生这种情况。我试图将数据从ViewModel中的列表拉到适配器，但数据没有加载。
这是我的类似电影适配器

class SimilarMovieAdapter : PagingDataAdapter<Result,SimilarMovieAdapter.SimilarMovieViewHolder>(diffCallBack) {
class SimilarMovieViewHolder(val binding : PopularTvRowBinding): ViewHolder(binding.root)

companion object{
    val diffCallBack = object : DiffUtil.ItemCallback<com.example.fiwoapp.model.similarmovie.Result>(){
        override fun areItemsTheSame(oldItem: Result, newItem: Result): Boolean {
            return oldItem.id==newItem.id
        }

        override fun areContentsTheSame(oldItem: Result, newItem: Result): Boolean {
            return oldItem==newItem
        }

    }
}

override fun onBindViewHolder(holder: SimilarMovieViewHolder, position: Int) {
    val currentItem = getItem(position)
    holder.binding.apply {
        val imageLinkBackground = "${Constants.IMAGE_BASE_UR}${currentItem!!.poster_path}"
        imageViewPoster.load(imageLinkBackground){
            crossfade(1000)
            crossfade(true)
        }
        movieName.text = currentItem.title

    }
}

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): SimilarMovieViewHolder {
    return SimilarMovieViewHolder(PopularTvRowBinding.inflate(LayoutInflater.from(parent.context),parent,false))
}

这是我的DetailsFragment，RecyclerView在DetailsFragment中。在这里，我从viewmodel获取数据，但是当我打开应用程序时，看不到任何数据。

@AndroidEntryPoint
class MovieDetailsFragment : Fragment() {

private var _binding : FragmentMovieDetailsBinding?=null
private val binding get() = _binding!!
private var movieId = 0
private val viewModel: MovieViewModel by viewModels()
private val args : MovieDetailsFragmentArgs by navArgs()
private lateinit var similarMovieAdapter : SimilarMovieAdapter

override fun onCreateView(
    inflater: LayoutInflater, container: ViewGroup?,
    savedInstanceState: Bundle?
): View {
    // Inflate the layout for this fragment
    _binding = FragmentMovieDetailsBinding.inflate(layoutInflater,container,false)
    return binding.root

}

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    movieId = args.movieId
    if (movieId>0){
        viewModel.loadDetailsMovie(movieId)
    }
}

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
    super.onViewCreated(view, savedInstanceState)

    similarMovieRv()
    loadingSimilarData()
    showData()

}

private fun loadingSimilarData(){
    similarMovieAdapter = SimilarMovieAdapter()
    lifecycleScope.launch {
        viewModel.movieSimilarList.collect{pagingData->
            similarMovieAdapter.submitData(pagingData)
        }
    }

}
private fun showDataSimilar(){

}

private fun showData(){
    binding.apply {
        viewModel.detailsMovie.observe(viewLifecycleOwner) {
            val moviePosterUrlOrg = Constants.IMAGE_BASE_OR + it.backdrop_path
            val moviePosterUrl = Constants.IMAGE_BASE_UR+it.poster_path
            val studioPicture = Constants.IMAGE_BASE_UR+it.production_companies.get(0).logo_path
            imageDetailOriginal.load(moviePosterUrlOrg){
                crossfade(true)
                crossfade(1000)
                scale(Scale.FILL)
            }
            imageViewPoster.load(moviePosterUrl){
                crossfade(1000)
                crossfade(true)
                scale(Scale.FILL)
            }
            studioImageView.load(studioPicture){
                crossfade(true)
                crossfade(1000)
                scale(Scale.FILL)
            }
            tagLineText.text = it.tagline
            movieName.text = it.title
            releaseDate.text = it.release_date
            releaseDateInfo.text = "${"Revenue: "+ it.revenue.toString()}"
            studioName.text = it.production_companies.get(0).name
            subjectText.text = it.overview
            runTimeText.text = "${it.runtime.toString() +  "min"}"
            genreText.text = it.genres.get(0).name
            countryText.text = it.production_countries.get(0).name
            voteText.text = it.vote_average.toString()
            voteTextAll.text = it.vote_count.toString()

        }

    }
}

private fun similarMovieRv(){
    val similarMovieAdapter = SimilarMovieAdapter()
    binding.similarMovieRv.apply {
        layoutManager = LinearLayoutManager(requireContext(),LinearLayoutManager.HORIZONTAL,false)
        adapter = similarMovieAdapter
        setHasFixedSize(true)

    }

}


override fun onDestroy() {
    super.onDestroy()
    _binding=null
}

}