Kotlin recyclerViewはどのアダプターメソッドも呼び出さない

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RecyclerViewアダプターは病気になる - アプリケーションの実行中にアダプターのメソッドの呼び出しはありません。データはFileListPresenterImplクラスで初期化されましたが、何も呼び出されませんでした。助けてください。Kotlin recyclerViewはどのアダプターメソッドも呼び出さない

class FileListAdapter(val fileList: List<File>): 
     RecyclerView.Adapter<FileListAdapter.ViewHolder>() { 

    override fun onBindViewHolder(holder: ViewHolder, position: Int) { 
     holder.bindData(fileList[position]) 
    } 

    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): ViewHolder { 
     var v = LayoutInflater.from(parent?.context).inflate(R.layout.row_item_file, parent, false) 
     return ViewHolder(v) 
    } 

    override fun getItemCount(): Int = fileList.size 

    class ViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) { 
     fun bindData(file: File) { 
      itemView.tvFileName.text = file.getFileName() 
      itemView.tvPath.text = file.savePath 
     } 
    } 
} 


class FileListFragment: ListFragment(), FileListView, ListFragment.RecyclerItemClickListener.OnItemClickListener { 

    lateinit private var addFileDialog: AddFileDialogFragment 
    lateinit private var listAdapter: FileListAdapter 
    lateinit private var listData: ArrayList<File> 

    val presenter = FileListPresenterImpl(this) 

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View { 
     return context.inflateLayout(R.layout.fragment_list) 
    } 

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

     addFileDialog = AddFileDialogFragment() 

     rvDataList.addOnItemTouchListener(object : RecyclerItemClickListener(activity, listener = this) {}) 
     presenter.loadFileList() 

     fab.setOnClickListener { showNewFileAddDialog() } 

    } 

    ... 

    override fun onFileListLoad(fileList: ArrayList<File>) { 
     listData = fileList 
     initAdapter() 
    } 

    private fun initAdapter() { 
     listAdapter = FileListAdapter(listData) 
     rvDataList.adapter = listAdapter 
    } 


} 


class FileListPresenterImpl(private val view: FileListView): FileListPresenter { 

    override fun loadFileList() { 
     //TODO load fileList from DB 
     view.onFileListLoad(loadTestFileList()) 
    } 

    ... 

    private fun loadTestFileList(): ArrayList<File> { 
     var testData = ArrayList<File>() 

     var downloadFolder : String = Environment.DIRECTORY_DOWNLOADS 

     val f: File = File(downloadFolder, "http://cdndl.zaycev.net/154044/4082702/vremya_i_steklo_-_navernopotomuchto_(zaycev.net).mp3") 

     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/154044/4082702/vremya_i_steklo_-_navernopotomuchto_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/871888/4212215/craig_david_and_sigala_-_ain_t_giving_up_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/111639/4135024/albina_-_ne_nado_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/126287/4087650/pika_-_patimeyker_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/861221/4125726/lil_wayne_and_wiz_khalifa_and_imagine_dragons_and_logic_and_ty_dolla_sign_and_x_ambassadors_-_sucker_for_pain_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/12757/4212221/the_black_eyed_peas_-_where_is_the_love_2016_remake_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/118309/4214105/yolka_-_na_bolshom_vozdushnom_share_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/126708/3989697/potap_i_nastya_-_umamy_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/871784/4211700/philip_rossa_-_pam_pam_pam..._radio_edit_(zaycev.net).mp3")) 
     testData.add(File(downloadFolder, "http://cdndl.zaycev.net/123704/4087949/mot_-_na_dne_(zaycev.net).mp3")) 

     return testData 
    } 

}

https://github.com/AntonKostyukewicz/Downloader - ソース

出典

2016-10-26 Natan Rubinstein

'FileListAdapter'をインスタンス化し、' RecyclerView'にそれを添付するコードの部分を追加してください。 – Egor

問題を解決したので、答えを解答として選択してください。 – IRus