data/res/layout/notification_template_material_big_media.xml

<?xml version="1.0" encoding="utf-8"?><!--
  ~ Copyright (C) 2014 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
  -->

<!-- Layout for the expanded media notification -->
<com.android.internal.widget.MediaNotificationView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/status_bar_latest_event_content"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:tag="bigMediaNarrow"
    >

    <include
        layout="@layout/notification_template_header"
        android:layout_width="match_parent"
        android:layout_height="@dimen/media_notification_header_height"
        />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:id="@+id/notification_media_content"
        >

        <LinearLayout
            android:id="@+id/notification_main_column"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/notification_content_margin_top"
            android:layout_marginStart="@dimen/notification_content_margin_start"
            android:layout_marginEnd="@dimen/notification_content_margin_end"
            android:orientation="vertical"
            >
            <include layout="@layout/notification_template_part_line1"/>
            <include layout="@layout/notification_template_text"/>
        </LinearLayout>

        <!-- this FrameLayout's minHeight serves as a padding for the content above -->
        <FrameLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="38dp"
            android:minHeight="@dimen/notification_content_margin"
            >
            <!-- The layout_marginStart is selected to ensure that action icons which are visually
                 12x12 in a 24x24 drawable will align correctly with the text.  This means that
                 stock media action icons will align, but icons may be visually up to 20x20 and
                 remain in-spec, in which case they will protrude into the column slightly. -->

            <!-- Nesting in FrameLayout is required to ensure that the marginStart actually applies
                 at the start instead of always the left, given that the media_actions LinearLayout
                 has layoutDirection="ltr". -->
            <LinearLayout
                android:id="@+id/media_actions"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginBottom="@dimen/media_notification_actions_padding_bottom"
                android:gravity="top"
                android:orientation="horizontal"
                android:layoutDirection="ltr"
                >

                <include
                    layout="@layout/notification_material_media_action"
                    android:id="@+id/action0"
                    />

                <include
                    layout="@layout/notification_material_media_action"
                    android:id="@+id/action1"
                    />

                <include
                    layout="@layout/notification_material_media_action"
                    android:id="@+id/action2"
                    />

                <include
                    layout="@layout/notification_material_media_action"
                    android:id="@+id/action3"
                    />

                <include
                    layout="@layout/notification_material_media_action"
                    android:id="@+id/action4"
                    />
            </LinearLayout>

        </FrameLayout>

    </LinearLayout>

    <include layout="@layout/notification_template_right_icon" />

</com.android.internal.widget.MediaNotificationView>