<?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="wrap_content"
    android:minHeight="60dp"
    android:orientation="vertical">

    <ProgressBar
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_centerInParent="true" />

</RelativeLayout>