Android Material Design Inline Datepicker issue

The calendarViewShown attribute is deprecated in the calendar-style date picker. If you want the spinner-style date picker back, you can set the datePickerMode attribute to spinner.

<DatePicker
    ...
    android:datePickerMode="spinner" />

As for the scrolling issue, the calendar-style date picker doesn't support nested scrolling.

Step-1: Create spinner/calendar date picker layout

.../main/res/layout/spinner_date_picker_layout.xml

    <?xml version="1.0" encoding="utf-8"?>
    <DatePicker xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/datePicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:datePickerMode="spinner"
        android:calendarViewShown="false" />

.../main/res/layout/calendar_date_picker_layout.xml

    <?xml version="1.0" encoding="utf-8"?>
    <DatePicker xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/datePicker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:datePickerMode="calendar" />

Step-2: Set clickable behavior on TextView for showing Date Dialog.

.../main/res/layout/activity_layout.xml

    <TextView
        android:id="@+id/dateText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        android:clickable="true"
        android:text="Date"
        android:onClick="@{() -> viewModel.onClickDate()}"></TextView>

Step-3: Show Dialog on onClickDate

override fun onClickDate() {
        showDialogForDate()
}

Step-4: Set DatePicker Layout into Dialog View.

private fun showDialogForDate() {

    //Set spinner/calendar date picker layout
    val spinnerDatePicker = layoutInflater.inflate(R.layout.spinner_date_picker_layout, null)

    // On click listener for dialog buttons
    val dialogClickListener = DialogInterface.OnClickListener { _, which ->
        when (which) {
            DialogInterface.BUTTON_POSITIVE -> {
                activity!!.dateText.text = spinnerDatePicker.datePicker.dayOfMonth.toString() + "/" + (spinnerDatePicker.datePicker.month + 1) + "/" + spinnerDatePicker.datePicker.year
            }
            DialogInterface.BUTTON_NEGATIVE -> {

            }
        }
    }

    val builder = AlertDialog.Builder(context!!)
    builder.setTitle(resources.getString(R.string.dialog_title))
        .setView(spinnerDatePicker)
        .setPositiveButton("Ok", dialogClickListener)
        .setNegativeButton("Cancel", dialogClickListener)
        .create()
        .show()
}