sheishuoAPP/app/res/layout/online_people_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:layout_width="match_parent"
              android:layout_height="match_parent"
              android:orientation="vertical">

    <com.netease.nim.uikit.common.ui.ptr2.PullToRefreshLayout
        android:id="@+id/swipe_refresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recycler_view"
            style="@style/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"/>
    </com.netease.nim.uikit.common.ui.ptr2.PullToRefreshLayout>
</LinearLayout>