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

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

<!-- This is a view that shows clock information in Keyguard. -->
<com.android.keyguard.KeyguardClockSwitch
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/keyguard_clock_container"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal|top">
    <FrameLayout
         android:id="@+id/clock_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:layout_gravity="center_horizontal"
         android:layout_alignParentTop="true">
        <TextClock
             android:id="@+id/default_clock_view"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="center_horizontal"
             android:gravity="center_horizontal"
             android:paddingBottom="@dimen/title_clock_padding"
             android:letterSpacing="0.02"
             android:textColor="?attr/wallpaperTextColor"
             android:singleLine="true"
             style="@style/widget_big"
             android:format12Hour="@string/keyguard_widget_12_hours_format"
             android:format24Hour="@string/keyguard_widget_24_hours_format"
             android:elegantTextHeight="false"
        />
        <TextClock
             android:id="@+id/default_clock_view_bold"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_gravity="bottom|center_horizontal"
             android:gravity="center_horizontal"
             android:letterSpacing="0.03"
             android:textColor="?attr/wallpaperTextColor"
             android:singleLine="true"
             style="@style/widget_title_bold"
             android:format12Hour="@string/keyguard_widget_12_hours_format"
             android:format24Hour="@string/keyguard_widget_24_hours_format"
             android:elegantTextHeight="false"
             android:visibility="invisible"
             />
    </FrameLayout>
    <include layout="@layout/keyguard_status_area"
        android:id="@+id/keyguard_status_area"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/clock_view" />
</com.android.keyguard.KeyguardClockSwitch>