res/layout/pin_number_picker.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
  ~ Copyright (C) 2015 The Android Open Source Project
  ~
  ~ Licensed under the Apache License, Version 2.0 (the "License");
  ~ you may not use this file except in compliance with the License.
  ~ You may obtain a copy of the License at
  ~
  ~      http://www.apache.org/licenses/LICENSE-2.0
  ~
  ~ Unless required by applicable law or agreed to in writing, software
  ~ distributed under the License is distributed on an "AS IS" BASIS,
  ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  ~ See the License for the specific language governing permissions and
  ~ limitations under the License.
  -->
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="48dp"
    android:layout_height="144dp">

    <TextView android:id="@+id/focused_background"
        android:layout_width="@dimen/pin_number_picker_text_view_width"
        android:layout_height="@dimen/pin_number_picker_text_view_height"
        android:layout_gravity="center"
        android:gravity="center"
        android:textSize="@dimen/pin_number_picker_text_size"
        android:textColor="@color/pin_number_picker_text_color"
        android:fontFamily="@string/light_font"
        android:background="@drawable/pin_number_picker_focused_background" />

    <LinearLayout
        android:id="@+id/number_view_holder"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:focusable="true"
        android:orientation="vertical">

        <TextView android:id="@+id/previous2_number"
            style="@style/pin_number_view"/>
        <TextView android:id="@+id/previous_number"
            style="@style/pin_number_view"/>
        <TextView android:id="@+id/current_number"
            style="@style/pin_number_view"/>
        <TextView android:id="@+id/next_number"
            style="@style/pin_number_view"/>
        <TextView android:id="@+id/next2_number"
            style="@style/pin_number_view"/>
    </LinearLayout>

</FrameLayout>