packages/SystemUI/res/layout/chipbar.xml

<!--
  ~ Copyright (C) 2021 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.
  -->
<!-- Wrap in a frame layout so that we can update the margins on the inner layout. (Since this view
     is the root view of a window, we cannot change the root view's margins.) -->
<!-- Alphas start as 0 because the view will be animated in. -->
<com.android.systemui.temporarydisplay.chipbar.ChipbarRootView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
    android:id="@+id/chipbar_root_view"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <!-- Extra marginBottom to give room for the drop shadow. -->
    <LinearLayout
        android:id="@+id/chipbar_inner"
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="@dimen/chipbar_outer_padding"
        android:background="@drawable/chipbar_background"
        android:layout_marginTop="20dp"
        android:layout_marginStart="@dimen/notification_side_paddings"
        android:layout_marginEnd="@dimen/notification_side_paddings"
        android:translationZ="4dp"
        android:layout_marginBottom="8dp"
        android:clipToPadding="false"
        android:gravity="center_vertical"
        android:alpha="0.0"
        >

        <com.android.internal.widget.CachingIconView
            android:id="@+id/start_icon"
            android:layout_width="@dimen/chipbar_start_icon_size"
            android:layout_height="@dimen/chipbar_start_icon_size"
            android:layout_marginEnd="12dp"
            android:alpha="0.0"
            />

        <!-- LINT.IfChange -->
        <TextView
            android:id="@+id/text"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            style="@style/Chipbar.Text"
            android:textColor="?androidprv:attr/materialColorOnSecondaryFixed"
            android:alpha="0.0"
            />
        <!-- LINT.ThenChange(systemui.temporarydisplay.chipbar.ChipbarInfo.kt) -->

        <!-- At most one of [loading, failure_icon, undo] will be visible at a time. -->
        <ImageView
            android:id="@+id/loading"
            android:layout_width="@dimen/chipbar_end_icon_size"
            android:layout_height="@dimen/chipbar_end_icon_size"
            android:layout_marginStart="@dimen/chipbar_end_item_start_margin"
            android:src="@drawable/ic_progress_activity"
            android:tint="?androidprv:attr/materialColorOnSecondaryFixedVariant"
            android:alpha="0.0"
            />

        <ImageView
            android:id="@+id/error"
            android:layout_width="@dimen/chipbar_end_icon_size"
            android:layout_height="@dimen/chipbar_end_icon_size"
            android:layout_marginStart="@dimen/chipbar_end_item_start_margin"
            android:src="@drawable/ic_warning"
            android:tint="@color/GM2_red_800"
            android:alpha="0.0"
            />

        <TextView
            android:id="@+id/end_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="@dimen/chipbar_end_item_start_margin"
            style="@style/Chipbar.Text"
            android:textColor="?androidprv:attr/materialColorOnPrimaryFixed"
            android:paddingStart="@dimen/chipbar_outer_padding"
            android:paddingEnd="@dimen/chipbar_outer_padding"
            android:paddingTop="@dimen/chipbar_end_button_vertical_padding"
            android:paddingBottom="@dimen/chipbar_end_button_vertical_padding"
            android:layout_marginTop="@dimen/chipbar_end_button_vertical_negative_margin"
            android:layout_marginBottom="@dimen/chipbar_end_button_vertical_negative_margin"
            android:background="@drawable/chipbar_end_button_background"
            android:alpha="0.0"
            />

    </LinearLayout>
</com.android.systemui.temporarydisplay.chipbar.ChipbarRootView>