private void checkPermission() {
    if (Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
        if (getApplicationContext().checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_DENIED) {
            String[] permissions = {Manifest.permission.WRITE_EXTERNAL_STORAGE};
            requestPermissions(permissions, 1);
        } else {
            importData();
        }
    } else {
        importData();
    }
}

    private void importData() {
        //get data from edit text
        try {
            userList.add(new SheetModel("kawcher", "0181238383", "nmkawcher112@gmail.com"));
            userList.add(new SheetModel("shuvo", "0171238383", "demo1@gmail.com"));
            userList.add(new SheetModel("hasan", "0161238383", "demo2@gmail.com"));
            userList.add(new SheetModel("habib", "0151238383", "demo3@gmail.com"));
            userList.add(new SheetModel("selim", "0131238383", "demo4@gmail.com"));
            userList.add(new SheetModel("tayeb", "0121238383", "demo5@gmail.com"));
            userList.add(new SheetModel("abul kalam", "0191238383", "demo6@gmail.com"));
            userList.add(new SheetModel("Kamal", "0101238383", "demo7@gmail.com"));
        }catch (Exception e){e.printStackTrace();}
        if (userList.size() > 0) {
            createXlFile();
        } else {
            Toast.makeText(this, "list are empty", Toast.LENGTH_SHORT).show();
        }
    }
    private void createXlFile() {
        // File filePath = new File(Environment.getExternalStorageDirectory() + "/Demo.xls");
        Workbook wb = new HSSFWorkbook();
        Cell cell = null;
        Sheet sheet = null;
        sheet = wb.createSheet("Demo Excel Sheet");
        //Now column and row
        Row row = sheet.createRow(0);
        cell = row.createCell(0);
        cell.setCellValue("Person Name");
        cell = row.createCell(1);
        cell.setCellValue("Phone Number");
        cell = row.createCell(2);
        cell.setCellValue("Email Address");
        //column width
        sheet.setColumnWidth(0, (20 * 200));
        sheet.setColumnWidth(1, (30 * 200));
        sheet.setColumnWidth(2, (30 * 200));
        for (int i = 0; i < userList.size(); i++) {
            Row row1 = sheet.createRow(i + 1);
            cell = row1.createCell(0);
            cell.setCellValue(userList.get(i).getName());
            cell = row1.createCell(1);
            cell.setCellValue((userList.get(i).getPhoneNo()));
            //  cell.setCellStyle(cellStyle);
            cell = row1.createCell(2);
            cell.setCellValue(userList.get(i).getEmail());
            sheet.setColumnWidth(0, (20 * 200));
            sheet.setColumnWidth(1, (30 * 200));
            sheet.setColumnWidth(2, (30 * 200));
        }
        String folderName = "Import Excel";
        String fileName = folderName + System.currentTimeMillis() + ".xls";
        String path = Environment.getExternalStorageDirectory() + File.separator + folderName + File.separator + fileName;
        File file = new File(Environment.getExternalStorageDirectory() + File.separator + folderName);
        if (!file.exists()) {
            file.mkdirs();
        }
//         file.deleteOnExit();
        FileOutputStream outputStream = null;
        try {
            //
            outputStream = new FileOutputStream(path);
//            outputStream = new FileOutputStream(new File(getFilesDir()., path));
            wb.write(outputStream);
            // ShareViaEmail(file.getParentFile().getName(),file.getName());
            Toast.makeText(getApplicationContext(), "Excel Created in " + path, Toast.LENGTH_SHORT).show();
        } catch (IOException e) {
            e.printStackTrace();
            Toast.makeText(getApplicationContext(), "Not OK", Toast.LENGTH_LONG).show();
            try {
                outputStream.close();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
    }

     /System.err: java.io.FileNotFoundException: /storage/emulated/0/Import Excel/Import Excel1681376608447.xls: open
 failed: ENOENT (No such file or directory)
             at libcore.io.IoBridge.open(IoBridge.java:574)
             at java.io.FileOutputStream.<init>(FileOutputStream.java:236)
             at java.io.FileOutputStream.<init>(FileOutputStream.java:125)
             at com.roomack.amlaak.view.activity.MainActivity.createXlFile(MainActivity.java:1125)
             at com.roomack.amlaak.view.activity.MainActivity.importData(MainActivity.java:1051)
             at com.roomack.amlaak.view.activity.MainActivity.checkPermission(MainActivity.java:1020)
             at com.roomack.amlaak.view.activity.MainActivity.access$300(MainActivity.java:100)
             at com.roomack.amlaak.view.activity.MainActivity$18.onClick(MainActivity.java:821)
             at android.view.View.performClick(View.java:7560)
             at android.view.View.performClickInternal(View.java:7533)
             at ndroid.view.View.-$$Nest$mperformClickInternal(Unknown Source:0)
             at android.view.View$PerformClick.run(View.java:29754)
     W/System.err:     at android.os.Handler.handleCallback(Handler.java:942)
             at android.os.Handler.dispatchMessage(Handler.java:99)
             at android.os.Looper.loopOnce(Looper.java:211)
             at android.os.Looper.loop(Looper.java:300)
             at android.app.ActivityThread.main(ActivityThread.java:8143)
             at java.lang.reflect.Method.invoke(Native Method)
             at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:580)
             at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1028)
         Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
             at libcore.io.Linux.open(Native Method)
             at libcore.io.ForwardingOs.open(ForwardingOs.java:563)
             at libcore.io.BlockGuardOs.open(BlockGuardOs.java:274)
             at libcore.io.ForwardingOs.open(ForwardingOs.java:563)
             at android.app.ActivityThread$AndroidOs.open(ActivityThread.java:8019)
             at libcore.io.IoBridge.open(IoBridge.java:560)

    binding.btHomeExport.setOnClickListener {
        GlobalScope.launch {
            exportData(requireActivity())
        }
    }

    try {
        // read again from file?
        val listMyDealWithMyClient = doReadFromFile(activity)
        val timeZoneDate = SimpleDateFormat("yyyy-MMM-dd_HH-mm-ss", Locale.getDefault())
        val formattedDate = timeZoneDate.format( Date())
        val workbook = XSSFWorkbook()
        val workSheet = workbook.createSheet("MyDeals_$formattedDate")
        val colorMap = workbook.stylesSource.indexedColors
        val cellStyleHeader = workbook.createCellStyle()
        cellStyleHeader.fillForegroundColor = IndexedColors.AQUA.getIndex()
        cellStyleHeader.fillPattern = FillPatternType.SOLID_FOREGROUND
        cellStyleHeader.font.bold = true
        cellStyleHeader.verticalAlignment = VerticalAlignment.CENTER
        cellStyleHeader.alignment = HorizontalAlignment.CENTER
        cellStyleHeader.setRightBorderColor( XSSFColor(byteArrayOf(0, 0, 0), colorMap))
        cellStyleHeader.borderRight = BorderStyle.THIN
        val row0 = workSheet.createRow(0)
        row0.height = 800

        // save workbook to file:
        val fileName = "data_$formattedDate.xlsx"
        val fos: FileOutputStream =
            activity.openFileOutput(fileName, Context.MODE_PRIVATE)!!
        workbook.write(fos)
        workbook.close()
        withContext(Dispatchers.IO) {
            fos.flush()
            fos.close();
        };
        //need: fos.path, but it is private!
        val appPath = activity.application?.filesDir?.absolutePath
        // delete old .xlsx files
        val dir = appPath?.let { File(it) }
        dir?.listFiles()!!.forEach { file ->
            run {
                if (file.name.endsWith(".xlsx")) {
                    file.deleteOnExit()
                }
            }
        }
        val exportFile = File(appPath, fileName)
        val sharingIntent = Intent(Intent.ACTION_SEND)
        val fileUri =
            FileProvider.getUriForFile(//
                activity.applicationContext!!,
                activity.packageName + ".fileProvider",
                exportFile
            );

<application
    android:allowBackup="false"
    android:dataExtractionRules="@xml/data_extraction_rules"
    android:fullBackupContent="@xml/backup_rules"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.MyAppTheme"
    tools:targetApi="33">
    <provider
        android:name="androidx.core.content.FileProvider"
        android:authorities="my.package.with.myid.fileProvider"
        android:grantUriPermissions="true"
        android:exported="false">
        <meta-data
            android:name="android.support.FILE_PROVIDER_PATHS"
            android:resource="@xml/file_provider_path"/>
    </provider>
    <activity
        android:name=

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <files-path
        name="files"
        path="." />
</paths>

            // add provider
            sharingIntent.type = "*/*"
            sharingIntent.putExtra(Intent.EXTRA_STREAM, fileUri)
            sharingIntent.flags = Intent.FLAG_GRANT_READ_URI_PERMISSION
            activity.startActivity(sharingIntent)
        } catch (ex: Exception) {
            ex.printStackTrace()
            Toast.makeText(activity, ex.message, Toast.LENGTH_LONG).show();
        }
    }
}