fragment_user_list.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/White">

    <LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:weightSum="100"
        android:background="@color/White">

        <android.support.v7.widget.RecyclerView
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="50"
            android:id="@+id/user_list_recycler_view">

        </android.support.v7.widget.RecyclerView>

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="50"
            android:id="@+id/map_container">

            <com.google.android.gms.maps.MapView
                xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:id="@+id/user_list_map" />
        </RelativeLayout>


    </LinearLayout>

    <ProgressBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/progressBar"
        android:layout_centerInParent="true"
        android:visibility="gone"/>

</RelativeLayout>

thanks so match