activity_settings.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:orientation="vertical"
	android:layout_width="match_parent"
	android:layout_height="match_parent">

	<fragment
		android:id="@+id/fragment"
		android:layout_width="match_parent"
		android:layout_height="match_parent"
		android:name="org.briarproject.briar.android.settings.SettingsFragment"/>
</FrameLayout>