packages/SystemUI/res/layout/qs_footer.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
** Copyright 2012, 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.
-->

<!-- Extends RelativeLayout -->
<com.android.systemui.qs.QSFooter
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/header"
    android:layout_width="match_parent"
    android:layout_height="48dp"
    android:baselineAligned="false"
    android:clickable="false"
    android:clipChildren="false"
    android:clipToPadding="false"
    android:paddingTop="0dp"
    android:gravity="center_vertical"
    android:orientation="horizontal">

    <include
        android:id="@+id/date_time_alarm_group"
        layout="@layout/status_bar_alarm_group"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="8dp"
        android:layout_width="wrap_content"
        android:layout_height="match_parent" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="8dp"
        android:gravity="end">

        <com.android.systemui.statusbar.phone.MultiUserSwitch
            android:id="@+id/multi_user_switch"
            android:layout_width="48dp"
            android:layout_height="48dp"
            android:layout_alignParentEnd="true"
            android:background="@drawable/ripple_drawable"
            android:focusable="true">

            <ImageView
                android:id="@+id/multi_user_avatar"
                android:layout_width="@dimen/multi_user_avatar_expanded_size"
                android:layout_height="@dimen/multi_user_avatar_expanded_size"
                android:layout_gravity="center"
                android:scaleType="centerInside"/>
        </com.android.systemui.statusbar.phone.MultiUserSwitch>

        <com.android.systemui.statusbar.AlphaOptimizedImageView
            android:id="@android:id/edit"
            android:layout_width="48dp"
            android:layout_height="48dp"
            android:background="?android:attr/selectableItemBackgroundBorderless"
            android:clickable="true"
            android:clipToPadding="false"
            android:contentDescription="@string/accessibility_quick_settings_edit"
            android:focusable="true"
            android:padding="16dp"
            android:src="@drawable/ic_mode_edit"
            android:tint="?android:attr/colorForeground"/>

        <com.android.systemui.statusbar.AlphaOptimizedFrameLayout
            android:id="@+id/settings_button_container"
            android:layout_width="48dp"
            android:layout_height="48dp"
            android:clipChildren="false"
            android:clipToPadding="false">

            <com.android.systemui.statusbar.phone.SettingsButton
                android:id="@+id/settings_button"
                style="@android:style/Widget.Material.Button.Borderless"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:background="@drawable/ripple_drawable"
                android:contentDescription="@string/accessibility_quick_settings_settings"
                android:src="@drawable/ic_settings_16dp"
                android:tint="?android:attr/colorForeground"/>

            <com.android.systemui.statusbar.AlphaOptimizedImageView
                android:id="@+id/tuner_icon"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:paddingStart="36dp"
                android:paddingEnd="4dp"
                android:src="@drawable/tuner"
                android:tint="?android:attr/textColorTertiary"
                android:visibility="invisible"/>

        </com.android.systemui.statusbar.AlphaOptimizedFrameLayout>

        <com.android.systemui.statusbar.phone.ExpandableIndicator
            android:id="@+id/expand_indicator"
            android:layout_width="48dp"
            android:layout_height="48dp"
            android:clipToPadding="false"
            android:clickable="true"
            android:focusable="true"
            android:background="?android:attr/selectableItemBackgroundBorderless"
            android:contentDescription="@string/accessibility_quick_settings_expand"
            android:padding="14dp" />
    </LinearLayout>

</com.android.systemui.qs.QSFooter>