tildefriends/src/android/res/layout/activity_main.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:orientation="vertical">
	<WebView
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:id="@+id/web">
	</WebView>
	<Button
		android:id="@+id/refresh"
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:layout_alignParentBottom="true"
		android:layout_alignParentLeft="true"
		android:layout_alignParentStart="true"
		android:text="REFRESH"/>
</RelativeLayout>