packages/SystemUI/res/layout/qs_footer_impl.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 FrameLayout -->
<com.android.systemui.qs.QSFooterImpl
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/qs_footer"
    android:layout_width="match_parent"
    android:layout_height="@dimen/qs_footer_height"
    android:layout_marginStart="@dimen/qs_footer_margin"
    android:layout_marginEnd="@dimen/qs_footer_margin"
    android:background="@android:color/transparent"
    android:baselineAligned="false"
    android:clickable="false"
    android:clipChildren="false"
    android:clipToPadding="false">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center_vertical"
        android:gravity="end" >

        <com.android.keyguard.AlphaOptimizedLinearLayout
            android:id="@+id/qs_footer_actions_edit_container"
            android:layout_width="@integer/qs_footer_actions_width"
            android:layout_height="match_parent"
            android:layout_weight="@integer/qs_footer_actions_weight"
            android:gravity="center_vertical|start" >
            <com.android.systemui.statusbar.AlphaOptimizedImageView
                android:id="@android:id/edit"
                android:layout_width="@dimen/qs_footer_action_button_size"
                android:layout_height="@dimen/qs_footer_action_button_size"
                android:background="?android:attr/selectableItemBackgroundBorderless"
                android:clickable="true"
                android:clipToPadding="false"
                android:contentDescription="@string/accessibility_quick_settings_edit"
                android:focusable="true"
                android:padding="@dimen/qs_footer_icon_padding"
                android:src="@*android:drawable/ic_mode_edit"
                android:tint="?android:attr/colorForeground"/>

            <TextView
                android:id="@+id/build"
                android:layout_width="wrap_content"
                android:layout_height="match_parent"
                android:clickable="true"
                android:gravity="center_vertical"
                android:focusable="true"
                android:singleLine="true"
                android:ellipsize="end"
                android:textAppearance="@style/TextAppearance.QS.Status"
                android:layout_marginEnd="4dp"
                android:visibility="gone"/>
         </com.android.keyguard.AlphaOptimizedLinearLayout>

        <com.android.systemui.qs.PageIndicator
            android:id="@+id/footer_page_indicator"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_gravity="center_vertical"
            android:visibility="gone" />

        <com.android.keyguard.AlphaOptimizedLinearLayout
            android:id="@+id/qs_footer_actions_container"
            android:layout_width="@integer/qs_footer_actions_width"
            android:layout_height="match_parent"
            android:layout_weight="@integer/qs_footer_actions_weight"
            android:gravity="center_vertical|end" >
            <com.android.systemui.statusbar.phone.MultiUserSwitch
                android:id="@+id/multi_user_switch"
                android:layout_width="@dimen/qs_footer_action_button_size"
                android:layout_height="@dimen/qs_footer_action_button_size"
                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.AlphaOptimizedFrameLayout
                android:id="@+id/settings_button_container"
                android:layout_width="@dimen/qs_footer_action_button_size"
                android:layout_height="@dimen/qs_footer_action_button_size"
                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:layout_gravity="center"
                    android:padding="@dimen/qs_footer_icon_padding"
                    android:background="@drawable/ripple_drawable"
                    android:contentDescription="@string/accessibility_quick_settings_settings"
                    android:src="@drawable/ic_settings"
                    android:scaleType="centerInside"
                    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.keyguard.AlphaOptimizedLinearLayout>
    </LinearLayout>
</com.android.systemui.qs.QSFooterImpl>