packages/SystemUI/res/layout/global_actions_lock_view.xml

<!--
  ~ Copyright (C) 2020 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
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  ~ distributed under the License is distributed on an "AS IS" BASIS,
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<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/global_actions_lock_message_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:visibility="gone">
  <TextView
      android:id="@+id/global_actions_lock_message"
      style="@style/TextAppearance.Control.Title"
      android:layout_width="match_parent"
      android:layout_height="wrap_content"
      android:layout_marginHorizontal="@dimen/global_actions_side_margin"
      android:drawablePadding="12dp"
      android:gravity="center"
      android:text="@string/global_action_lock_message"
      app:layout_constraintBottom_toBottomOf="parent"
      app:layout_constraintTop_toTopOf="parent"
      app:layout_constraintVertical_bias="0.35"/>
</androidx.constraintlayout.widget.ConstraintLayout>