fragment_user_n1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:card="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#e5e5e5"
    android:weightSum="100"
    tools:context=".UserActivity$PlaceholderFragment"
    android:id="@+id/root_layout">

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="45"
        android:weightSum="100"
        android:id="@+id/header_layout">
    </LinearLayout>

    <LinearLayout
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="0dp"
        android:layout_weight="55"
        android:id="@+id/content_layout">

        <uk.co.senab.actionbarpulltorefresh.library.PullToRefreshLayout
            android:id="@+id/pullrefresh_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
            
            <it.gmariotti.cardslib.library.view.CardListView
                android:id="@+id/userDetailList"
                android:layout_width="match_parent"
                android:layout_height="match_parent"/>

        </uk.co.senab.actionbarpulltorefresh.library.PullToRefreshLayout>

    </LinearLayout>
</LinearLayout>