要在Android中从对话框传递数据到底部弹出对话框片段，可以按照以下步骤进行操作：

1. 首先，在布局文件中创建一个包含所需视图的底部弹出对话框片段的布局。例如，可以创建一个名为bottom_dialog_fragment_layout.xml的布局文件，包含一个TextView和一个Button：

2. 创建一个底部弹出对话框片段类BottomDialogFragment，并在onCreateView方法中加载上一步创建的布局文件：

class BottomDialogFragment : DialogFragment() {

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view = inflater.inflate(R.layout.bottom_dialog_fragment_layout, container, false)
        return view
    }
}

3. 在主活动中创建一个按钮，并在点击事件中显示底部弹出对话框片段：

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val openDialogButton = findViewById(R.id.openDialogButton)
        openDialogButton.setOnClickListener {
            val dialogFragment = BottomDialogFragment()
            dialogFragment.show(supportFragmentManager, "bottom_dialog_fragment")
        }
    }
}

4. 在主活动中创建一个对话框，并在点击事件中将数据传递给底部弹出对话框片段。

class MainActivity : AppCompatActivity() {

    private lateinit var dialog: AlertDialog

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val openDialogButton = findViewById(R.id.openDialogButton)
        openDialogButton.setOnClickListener {
            showDialog()
        }
    }

    private fun showDialog() {
        val builder = AlertDialog.Builder(this)
        builder.setTitle("Enter data")

        val editText = EditText(this)
        builder.setView(editText)

        builder.setPositiveButton("OK") { dialog, _ ->
            val data = editText.text.toString()

            val dialogFragment = BottomDialogFragment()
            val bundle = Bundle()
            bundle.putString("data", data)
            dialogFragment.arguments = bundle

            dialogFragment.show(supportFragmentManager, "bottom_dialog_fragment")

            dialog.dismiss()
        }

        builder.setNegativeButton("Cancel") { dialog, _ ->
            dialog.dismiss()
        }

        dialog = builder.create()
        dialog.show()
    }
}

5. 在底部弹出对话框片段的onViewCreated方法中获取传递的数据，并显示在TextView中：

class BottomDialogFragment : DialogFragment() {

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val view = inflater.inflate(R.layout.bottom_dialog_fragment_layout, container, false)
        return view
    }

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

        val textView = view.findViewById(R.id.textView)
        val closeButton = view.findViewById(R.id.closeButton)

        val data = arguments?.getString("data")
        textView.text = "Data from dialog: $data"

        closeButton.setOnClickListener {
            dismiss()
        }
    }
}

通过以上步骤，在Android中可以实现从对话框传递数据到底部弹出对话框片段，并在底部弹出对话框片段中显示传递的数据。