<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <Fragment
        android:layout_width="0dp"
        android:layout_weight="1"
        android:name="MyListFragment"
        tools:layout="@layout/fragment_list">
    </Fragment>
    <Fragment
    android:layout_width="0dp"
    android:layout_weight="2"
        android:name="DetailerFragment"
    tools:layout="@layout/fragment_detailer">
</Fragment>

</LinearLayout><!-- From: file:/C:/ELTE/Mobi/FirstApp/app/src/main/res/layout-sw720dp/activity_main.xml -->