<?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/master_detail_wrapper" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".activity.MainActivity"> <fragment android:name="com.wireguard.android.fragment.TunnelListFragment" android:layout_width="match_parent" android:layout_height="match_parent" android:tag="LIST" /> <FrameLayout android:id="@+id/detail_container" android:layout_width="match_parent" android:layout_height="match_parent" /> </FrameLayout>