samples/SupportLeanbackShowcase/app/src/main/res/layout/text_icon_card.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:lb="http://schemas.android.com/apk/res-auto"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             android:background="@color/default_card_footer_background_color"
             lb:layout_viewType="main">

    <LinearLayout
        android:layout_width="256dp"
        android:layout_height="wrap_content"
        android:background="@color/default_card_background_color"
        android:orientation="vertical">

        <TextView
            android:id="@+id/extra_text"
            style="@style/StandardCardSecondaryText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fontFamily="sans-serif-condensed"
            android:lines="7"
            android:maxLines="7"
            android:paddingBottom="14dp"
            android:paddingLeft="15dp"
            android:paddingRight="15dp"
            android:paddingTop="12dp"/>

    </LinearLayout>
</FrameLayout>