WordPress/src/main/res/layout/number_picker_dialog.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <org.wordpress.android.widgets.WPSwitch
        android:id="@+id/number_picker_switch"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="24dp"
        android:layout_marginRight="24dp"
        android:textSize="@dimen/text_sz_large"
        android:textColor="@color/calypso_title_text" />

    <org.wordpress.android.widgets.WPTextView
        android:id="@+id/number_picker_text"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="24dp"
        android:layout_marginRight="24dp"
        android:textSize="@dimen/text_sz_small"
        android:textColor="@color/grey_darken_10" />

    <LinearLayout
        android:id="@+id/number_picker_toggleable"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <org.wordpress.android.widgets.WPTextView
            android:id="@+id/number_picker_header"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginLeft="24dp"
            android:layout_marginTop="18dp"
            android:layout_marginRight="24dp"
            android:layout_marginBottom="8dp"
            android:duplicateParentState="true"
            android:textSize="@dimen/text_sz_large"
            android:textColor="@color/calypso_title_text" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/grey_lighten_30" />

        <org.wordpress.android.ui.WPNumberPicker
            android:id="@+id/number_picker"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:duplicateParentState="true"
            android:paddingTop="36dp" />

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="@color/grey_lighten_30" />

    </LinearLayout>

</LinearLayout>