icon_header_item.xml

<androidx.leanback.widget.NonOverlappingLinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">

    <ImageView
        android:id="@+id/header_icon"
        android:layout_width="32dp"
        android:layout_height="32dp"
        android:contentDescription="@string/header_icon" />

    <TextView
        android:id="@+id/header_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp" />

</androidx.leanback.widget.NonOverlappingLinearLayout>