DownApp / app / src / main / res / layout / activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<com.handmark.pulltorefresh.library.PullToRefreshListView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main_list_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />