Metro/app/src/main/res/layout/layout_notification_expanded.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/background"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <RelativeLayout
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/content"
        android:layout_alignParentEnd="true">

        <ImageView
            android:id="@+id/largeIcon"
            android:layout_width="@dimen/notification_big_image_size"
            android:layout_height="@dimen/notification_big_image_size"
            android:layout_alignParentEnd="true"
            android:scaleType="centerCrop"
            tools:src="@tools:sample/avatars" />

    </RelativeLayout>

    <LinearLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:orientation="vertical"
        android:paddingStart="0dp"
        android:paddingTop="8dp"
        android:paddingEnd="144dp">

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="4dp"
            android:gravity="center_vertical"
            android:orientation="horizontal">

            <ImageView
                android:id="@+id/smallIcon"
                android:layout_width="12dp"
                android:layout_height="12dp"
                android:layout_marginStart="16dp"
                tools:src="@drawable/ic_audiotrack_black_24dp"
                tools:tint="@color/md_black_1000" />

            <TextView
                android:id="@+id/appName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_marginStart="4dp"
                android:ellipsize="end"
                android:lines="1"
                android:singleLine="true"
                android:textSize="10sp"
                tools:text="@string/app_name" />

            <ImageView
                android:id="@+id/arrow"
                android:layout_width="12dp"
                android:layout_height="12dp"
                android:layout_marginStart="2dp"
                android:scaleType="centerInside"
                android:src="@drawable/ic_keyboard_arrow_up_24dp"
                android:tint="@color/dark_grey"
                tools:ignore="VectorDrawableCompat" />

        </LinearLayout>

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:lines="1"
            android:paddingStart="16dp"
            android:paddingEnd="0dp"
            android:singleLine="true"
            android:textAppearance="@style/Theme.RetroMusic.Notification"
            android:textStyle="bold"
            tools:text="@tools:sample/lorem/random" />

        <TextView
            android:id="@+id/subtitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:ellipsize="end"
            android:lines="1"
            android:paddingStart="16dp"
            android:paddingEnd="0dp"
            android:singleLine="true"
            android:textAppearance="@style/Theme.RetroMusic.Notification.Title"
            tools:text="@tools:sample/lorem/random" />

        <LinearLayout
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:orientation="horizontal"
            android:paddingStart="8dp"
            android:paddingEnd="0dp">

            <ImageButton
                android:id="@+id/action_prev"
                android:layout_width="42dp"
                android:layout_height="42dp"
                android:background="@drawable/notification_selector"
                android:scaleType="centerInside"
                tools:src="@drawable/ic_skip_previous_round_white_32dp"
                tools:tint="?colorOnPrimary" />

            <ImageButton
                android:id="@+id/action_play_pause"
                android:layout_width="42dp"
                android:layout_height="42dp"
                android:background="@drawable/notification_selector"
                android:scaleType="centerInside"
                tools:src="@drawable/ic_pause_white_48dp"
                tools:tint="?colorOnPrimary" />

            <ImageButton
                android:id="@+id/action_next"
                android:layout_width="42dp"
                android:layout_height="42dp"
                android:background="@drawable/notification_selector"
                android:scaleType="centerInside"
                tools:src="@drawable/ic_skip_next_round_white_32dp"
                tools:tint="?colorOnPrimary" />

            <ImageButton
                android:id="@+id/action_quit"
                android:layout_width="42dp"
                android:layout_height="42dp"
                android:background="@drawable/notification_selector"
                android:scaleType="centerInside"
                tools:src="@drawable/ic_close_white_24dp"
                tools:tint="?colorOnPrimary" />
        </LinearLayout>
    </LinearLayout>
</RelativeLayout>