NewPipe/app/src/main/res/layout/activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="org.schabi.newpipe.MainActivity"
    android:orientation="vertical">

    <fragment
        android:id="@+id/search_fragment"
        android:name="org.schabi.newpipe.search_fragment.SearchInfoItemFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>