在最小化我的应用程序并再次返回到我的应用程序从回收视图中选择项目后，将回收视图项目标记为选中的imageview复选框和颜色过滤器消失，但当我选择任何下一个项目时，该项目显示imageview复选框和颜色过滤器。我必须再次重新选择第一个选定的项目以显示imageview复选框和颜色过滤器。注意：如果有应用程序最大化和项目选择之间的时间延迟，那么一切都工作正常。我附上了我的代码。任何帮助或指导是高度赞赏。

ImageAdapter编码：

var file: ArrayList<WhatsAppStatus>,

    var context: Context,

    private val listener: RecyclerViewSelectionListener

) :

    RecyclerView.Adapter<ImageAdapter.ImageViewHolder>() {

    private val selectedItems = ArrayList<WhatsAppStatus>()


    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ImageViewHolder {

        val itemView =

            LayoutInflater.from(parent.context).inflate(R.layout.image_item, parent, false)

        return ImageViewHolder(itemView)

    }


    override fun getItemCount(): Int {

        return file.size;

    }


    fun notifySelectAll() {

//        recyclerView.adapter?.notifyDataSetChanged()

        selectedItems.clear()

        file.forEach {

            it.isSelected = true

            selectedItems.add(it)

        }

        notifyDataSetChanged()

    }

    fun clearSelected() {

//        recyclerView.adapter?.notifyDataSetChanged()

        selectedItems.clear()

        // Perform clearing asynchronously

            file.forEach {

                it.isSelected = false

        }

        notifyDataSetChanged()

    }

    fun selectedSize(): Int {

//        recyclerView.adapter?.notifyDataSetChanged()

       return selectedItems.size

    }

    interface RecyclerViewSelectionListener {

        fun onItemSelected(selectedStatus: WhatsAppStatus, size: Int)

    }

    fun isEmpty(): Boolean {

            return selectedItems.isEmpty()

    }

    fun downloadItem(): ArrayList<WhatsAppStatus> {

            return selectedItems

    }

    override fun onBindViewHolder(holder: ImageViewHolder, position: Int) {

        val currentItem = file[position]

        if (currentItem.isSelected) {

            holder.image.setColorFilter(R.color.black)

            holder.checkBox.visibility=View.VISIBLE

        } else {

            holder.image.clearColorFilter()

            holder.checkBox.visibility=View.GONE

        }

        Glide.with(context).load(currentItem.documentFile.uri).into(holder.image)

        holder.image.setOnClickListener({

            currentItem.isSelected = !currentItem.isSelected

            if (currentItem.isSelected) {

                holder.image.setColorFilter(R.color.black)

                holder.checkBox.visibility=View.VISIBLE

                selectedItems.add(currentItem)

            } else {

                holder.image.clearColorFilter()

                holder.checkBox.visibility=View.GONE

                selectedItems.remove(currentItem)

            }

            listener.onItemSelected(currentItem,selectedItems.size)

//            notifyItemChanged(position)

        })


    }


    class ImageViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

        val image: ImageView = itemView.findViewById(R.id.imageView)

        val checkBox: ImageView = itemView.findViewById(R.id.checkBox)

    }

}```


**ImageFragment Code:**

class ImageFragment : Fragment(), ImageAdapter.RecyclerViewSelectionListener, ImageAdapterListener {

    // TODO: Rename and change types of parameters

    private var param1: String? = null

    private var param2: String? = null

    private lateinit var recyclerView: RecyclerView

    private lateinit var imageFile: ArrayList<WhatsAppStatus>



    @RequiresApi(Build.VERSION_CODES.Q)

    override fun onCreate(savedInstanceState: Bundle?) {

        super.onCreate(savedInstanceState)

        arguments?.let {

            param1 = it.getString(ARG_PARAM1)

            param2 = it.getString(ARG_PARAM2)

        }


    }


    override fun onCreateView(

        inflater: LayoutInflater, container: ViewGroup?,

        savedInstanceState: Bundle?

    ): View? {

        // Inflate the layout for this fragment

        return inflater.inflate(R.layout.fragment_image, container, false)

    }


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

        super.onViewCreated(view, savedInstanceState)

        recyclerView = view.findViewById(R.id.imageRecyclerView)

        imageFile = ArrayList()

        recyclerView.layoutManager = GridLayoutManager(context, 2)

        recyclerView.setHasFixedSize(true)

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

            accessStatusesFolder()

        }

        recyclerView.adapter = ImageAdapter(imageFile, requireContext(), this)

    }



    companion object {

        /**

         * Use this factory method to create a new instance of

         * this fragment using the provided parameters.

         *

         * @param param1 Parameter 1.

         * @param param2 Parameter 2.

         * @return A new instance of fragment ImageFragment.

         */

        // TODO: Rename and change types and number of parameters

        @JvmStatic

        fun newInstance(param1: String, param2: String) =

            ImageFragment().apply {

                arguments = Bundle().apply {

                    putString(ARG_PARAM1, param1)

                    putString(ARG_PARAM2, param2)

                }

            }

    }





    @RequiresApi(Build.VERSION_CODES.O)

    fun accessStatusesFolder() {

        AccessStatusesTask().execute()

    }


    inner class AccessStatusesTask : AsyncTask<Void, Void, List<WhatsAppStatus>>() {

        override fun doInBackground(vararg params: Void?): List<WhatsAppStatus> {

            val list = requireActivity().contentResolver.persistedUriPermissions

            val documentFile = DocumentFile.fromTreeUri(requireContext(), list[0].uri)


            val statusFiles = documentFile?.listFiles()

            val newImageFiles = ArrayList<WhatsAppStatus>()


            statusFiles?.forEach { statusFile ->

                // Get the status file name.

                val statusFileName = statusFile.name

                val whatsAppStatus = WhatsAppStatus(statusFile)

                if (statusFileName != null) {

                    if (statusFileName.endsWith(".jpg") || statusFileName.endsWith(".jpeg")

                        || statusFileName.endsWith(".png") || statusFileName.endsWith(".gif") ||

                        statusFileName.endsWith(".webp") || statusFileName.endsWith(".bmp")

                    )

                        newImageFiles.add(whatsAppStatus)

                }

            }

            imageFile.clear()

            return newImageFiles

        }


        override fun onPostExecute(result: List<WhatsAppStatus>?) {

            result?.let {


                imageFile.addAll(it)

                notifyAdapterDataSetChanged(this@ImageFragment)

            }

        }

    }


    fun downloadAll() {

        DownloadAllTask().execute()

    }


    inner class DownloadAllTask : AsyncTask<Void, Void, Unit>() {

        override fun onPreExecute() {

            super.onPreExecute()


        }

        override fun doInBackground(vararg params: Void?) {

            val selectedItem = (recyclerView.adapter as ImageAdapter).downloadItem().toList()  // Create a copy


            selectedItem.forEach {

                val savedStatusFile = File(

                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).absolutePath +

                            "/statusFileName/" + it.documentFile.name

                )

                copyFile(it.documentFile, savedStatusFile)

            }

        }

        override fun onPostExecute(result: Unit?) {

            result?.let {

                (activity as StickerActivity).updateToolbarNormalMenu()

                notifyAdapterDataSetChanged(this@ImageFragment)

            }

        }

    }





    private fun copyFile(statusFile: DocumentFile, savedStatusFile: File) {

        val inputStream = requireContext().contentResolver.openInputStream(statusFile.uri) ?: return


        try {

            val outputStream = FileOutputStream(savedStatusFile)

            val buffer = ByteArray(1024)

            var bytesRead: Int

            while (inputStream.read(buffer).also { bytesRead = it } > 0) {

                outputStream.write(buffer, 0, bytesRead)

            }

            outputStream.close()

        } catch (e: IOException) {

            Log.e("MainActivity", "Failed to copy file: ${e.message}")

        } finally {

            inputStream.close()

        }

    }


    override fun onStart() {

        super.onStart()

        (activity as StickerActivity).updateToolbarNormalMenu()

        notifyAdapterDataSetChanged(this@ImageFragment)

      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {

            accessStatusesFolder()

        }


//        Toast.makeText(context, "onStart", Toast.LENGTH_SHORT).show()



    }


    override fun onPause() {

        super.onPause()

//        notifyAdapterDataSetChanged(this@ImageFragment)

//        notifyAdapterDataSetChanged(this)

//        (activity as StickerActivity).updateToolbarNormalMenu()

//        recyclerView.adapter?.notifyDataSetChanged()

    }



    override fun onItemSelected(selectedStatus: WhatsAppStatus, size: Int) {

        (activity as StickerActivity).onItemSelected(selectedStatus, size)

    }


    override fun notifyAdapterDataSetChanged(fragment: ImageFragment) {

        (recyclerView.adapter as ImageAdapter).clearSelected()

    }


    fun isEmpty(): Boolean {

        return (recyclerView.adapter as ImageAdapter).isEmpty()

    }


    fun notifySelectAll() {

//        recyclerV

iew.adapter?.notifyDataSetChanged()

        (recyclerView.adapter as ImageAdapter).notifySelectAll()

    }


    fun notifySize(): Int {

//        recyclerView.adapter?.notifyDataSetChanged()

        return (recyclerView.adapter as ImageAdapter).selectedSize()

    }

}

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