OsuLogin/res/layout/osu_web_view.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
             xmlns:tools="http://schemas.android.com/tools"
             android:id="@+id/container"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
             tools:context="com.android.hotspot2.osulogin.OsuLoginActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="4dp">

            <!-- Eliminates ProgressBar padding by boxing it into a 4dp high container -->
            <ProgressBar
                android:id="@+id/progress_bar"
                style="@android:style/Widget.Material.Light.ProgressBar.Horizontal"
                android:indeterminate="false"
                android:max="100"
                android:progress="0"
                android:layout_gravity="center"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"/>
        </FrameLayout>
        <androidx.swiperefreshlayout.widget.SwipeRefreshLayout
            android:id="@+id/swipe_refresh"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
        <WebView
            android:id="@+id/webview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentBottom="false"
            android:layout_alignParentRight="false"/>
        </androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
    </LinearLayout>
</FrameLayout>