packages/CarSystemUI/res-keyguard/layout/num_pad_keys.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2018 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
  -->

<merge xmlns:android="http://schemas.android.com/apk/res/android"
       xmlns:app="http://schemas.android.com/apk/res-auto">
    <!-- Row 1 -->
    <com.android.keyguard.NumPadKey
        android:id="@+id/key1"
        style="@style/NumPadKeyButton"
        app:digit="1" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key2"
        style="@style/NumPadKeyButton.MiddleColumn"
        app:digit="2" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key3"
        style="@style/NumPadKeyButton"
        app:digit="3" />

    <!-- Row 2 -->
    <com.android.keyguard.NumPadKey
        android:id="@+id/key4"
        style="@style/NumPadKeyButton"
        app:digit="4" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key5"
        style="@style/NumPadKeyButton.MiddleColumn"
        app:digit="5" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key6"
        style="@style/NumPadKeyButton"
        app:digit="6" />

    <!-- Row 3 -->
    <com.android.keyguard.NumPadKey
        android:id="@+id/key7"
        style="@style/NumPadKeyButton"
        app:digit="7" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key8"
        style="@style/NumPadKeyButton.MiddleColumn"
        app:digit="8" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key9"
        style="@style/NumPadKeyButton"
        app:digit="9" />

    <!-- Row 4 -->
    <ImageButton
        android:id="@+id/delete_button"
        style="@style/NumPadKeyButton.LastRow"
        android:gravity="center_vertical"
        android:src="@drawable/ic_backspace"
        android:clickable="true"
        android:tint="@android:color/white"
        android:background="@drawable/ripple_drawable"
        android:contentDescription="@string/keyboardview_keycode_delete" />
    <com.android.keyguard.NumPadKey
        android:id="@+id/key0"
        style="@style/NumPadKeyButton.LastRow.MiddleColumn"
        app:digit="0" />
    <ImageButton
        android:id="@+id/key_enter"
        style="@style/NumPadKeyButton.LastRow"
        android:src="@drawable/ic_done"
        android:tint="@android:color/white"
        android:background="@drawable/ripple_drawable"
        android:contentDescription="@string/keyboardview_keycode_enter" />
</merge>