tt-rss-android/org.fox.ttrss/src/main/res/layout/headlines_articles.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/headlines"
    android:fitsSystemWindows="true"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/fragment_container"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:baselineAligned="false"
        android:orientation="horizontal" >

        <FrameLayout
            android:id="@+id/headlines_fragment"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="0"
            android:background="?feedlistBackground" >
        </FrameLayout>

        <FrameLayout
            android:id="@+id/article_fragment"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1"
            android:background="?articleBackground" >
        </FrameLayout>
    </LinearLayout>

</LinearLayout>