1<?xml version="1.0" encoding="utf-8"?>
2<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
3  android:layout_width="match_parent"
4  android:layout_height="match_parent">
5
6  <ProgressBar
7    android:id="@+id/progressBar"
8    style="?android:attr/progressBarStyleLarge"
9    android:layout_width="wrap_content"
10    android:layout_height="wrap_content"
11    android:layout_centerHorizontal="true"
12    android:layout_centerVertical="true"
13    android:visibility="gone" />
14</RelativeLayout>
15