PlayerAndroid/app/src/main/res/layout/fragment_card_player.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="?android:attr/windowBackground"
    android:clickable="true"
    android:focusable="true">

    <View
        android:id="@+id/gradient_background"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <fragment
        android:id="@+id/player_album_cover_fragment"
        android:name="code.name.monkey.retromusic.ui.fragments.player.PlayerAlbumCoverFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:layout="@layout/fragment_album_full_cover" />
    
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

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

        <FrameLayout
            android:id="@+id/toolbar_container"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="0">


            <androidx.appcompat.widget.Toolbar
                android:id="@+id/player_toolbar"
                style="@style/Toolbar48"
                android:navigationIcon="@drawable/ic_close_white_24dp"
                app:navigationIcon="@drawable/ic_close_white_24dp" />
        </FrameLayout>

        <Space
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1" />

        <com.google.android.material.card.MaterialCardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="8dp"
            android:layout_weight="0"
            app:cardBackgroundColor="?android:windowBackground"
            app:cardCornerRadius="8dp"
            app:cardUseCompatPadding="true">

            <FrameLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <fragment
                    android:id="@+id/playback_controls_fragment"
                    android:name="code.name.monkey.retromusic.ui.fragments.player.card.CardPlaybackControlsFragment"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    tools:layout="@layout/fragment_card_player_playback_controls" />
            </FrameLayout>
        </com.google.android.material.card.MaterialCardView>
    </LinearLayout>
</FrameLayout>