list_fragment.xml

<!-- 레이아웃 태그 선언 -->
<layout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto">

    <data>
        <variable
            name="isLoading"
            type="boolean" />
    </data>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@color/cardview_light_background"
        android:orientation="vertical">

        <TextView
            android:id="@+id/loading_tv"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:gravity="center_vertical|center_horizontal"
            android:text="@string/loading_products"
            android:textAlignment="center"
            app:visibleGone="@{isLoading}"/>

        <android.support.v7.widget.RecyclerView
            android:id="@+id/products_list"
            android:contentDescription="@string/cd_products_list"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:layoutManager="LinearLayoutManager"
            app:visibleGone="@{!isLoading}"/>

    </LinearLayout>
</layout>