prebuilts/gradle/AutofillFramework/Application/src/main/res/layout/credit_card_activity.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
 * Copyright (C) 2017 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.
-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:id="@+id/standardLoginLayout"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:focusable="true"
              android:focusableInTouchMode="true"
              android:orientation="vertical"
              android:paddingBottom="@dimen/activity_vertical_margin"
              android:paddingLeft="@dimen/activity_horizontal_margin"
              android:paddingRight="@dimen/activity_horizontal_margin"
              android:paddingTop="@dimen/activity_vertical_margin">

    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center">

        <TextView
            android:id="@+id/creditCardNumberLabel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="20dp"
            android:importantForAutofill="no"
            android:text="@string/credit_card_number_label" />

        <EditText
            android:id="@+id/creditCardNumberField"
            android:layout_width="200sp"
            android:layout_height="wrap_content"
            android:layout_alignBaseline="@+id/creditCardNumberLabel"
            android:layout_toEndOf="@id/creditCardNumberLabel"
            android:autofillHints="creditCardNumber" />

        <TextView
            android:id="@+id/creditCardExpirationLabel"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignStart="@+id/creditCardNumberLabel"
            android:layout_below="@+id/creditCardNumberLabel"
            android:layout_marginTop="20dp"
            android:importantForAutofill="no"
            android:text="@string/credit_card_expiration_label" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignBaseline="@+id/creditCardExpirationLabel"
            android:layout_alignStart="@+id/creditCardNumberField"
            android:orientation="horizontal">

            <Spinner
                android:id="@+id/expirationDay"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autofillHints="creditCardExpirationDay" />

            <Spinner
                android:id="@+id/expirationMonth"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autofillHints="creditCardExpirationMonth" />

            <Spinner
                android:id="@+id/expirationYear"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:autofillHints="creditCardExpirationYear" />
        </LinearLayout>

    </RelativeLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:gravity="center"
        android:orientation="horizontal">

        <Button
            android:id="@+id/clear"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Clear" />

        <Button
            android:id="@+id/submit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Submit" />
    </LinearLayout>

</LinearLayout>