packages/SystemUI/res-keyguard/layout/keyguard_status_area.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
**
** Copyright 2013, 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.
*/
-->

<!-- This is a view that shows general status information in Keyguard. -->
<com.android.keyguard.KeyguardSliceView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_marginStart="16dp"
    android:layout_marginEnd="16dp"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:clipToPadding="false"
    android:orientation="vertical"
    android:layout_centerHorizontal="true">
    <com.android.systemui.statusbar.AlphaOptimizedTextView
              android:id="@+id/title"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:layout_marginBottom="@dimen/widget_title_bottom_margin"
              android:paddingStart="64dp"
              android:paddingEnd="64dp"
              android:visibility="gone"
              android:textColor="?attr/wallpaperTextColor"
              android:theme="@style/TextAppearance.Keyguard"
    />
    <view class="com.android.keyguard.KeyguardSliceView$Row"
              android:id="@+id/row"
              android:layout_width="match_parent"
              android:layout_height="wrap_content"
              android:orientation="horizontal"
              android:gravity="center"
    />
</com.android.keyguard.KeyguardSliceView>