private fun readSms() {
        val contentResolver = applicationContext.contentResolver
        val cursor = contentResolver.query(
            Telephony.Sms.CONTENT_URI,
            null,
            null,
            null,
            null
        )
        if (cursor != null && cursor.moveToFirst()) {
            do {
                val address = cursor.getString(cursor.getColumnIndexOrThrow(Telephony.Sms.ADDRESS))
                val body = cursor.getString(cursor.getColumnIndexOrThrow(Telephony.Sms.BODY))
                smsList.add("Sender: $address\nMessage: $body")
            } while (cursor.moveToNext())
        }
        cursor?.close()
    }



=======================

if (ActivityCompat.checkSelfPermission(
                            applicationContext,
                            Manifest.permission.READ_SMS
                        ) == PackageManager.PERMISSION_GRANTED


                            )  {
                            readSms()
                        }
                        else {
                            requestPermissions(arrayOf(Manifest.permission.READ_SMS), 1)
                        }