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

<?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="match_parent"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_margin="2dp"
        android:orientation="vertical">

        <RelativeLayout
            android:id="@+id/topBar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="5dp"
            android:orientation="horizontal"
            android:paddingBottom="3dp"
            android:paddingTop="3dp">

            <TextView
                android:id="@+id/secondText"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:paddingLeft="3dp"
                android:text="@string/chosenTabs"
                android:textAppearance="?android:attr/textAppearanceLarge" />

            <Button
                android:id="@+id/buttonAdd"
                android:layout_width="25dp"
                android:layout_height="25dp"
                android:layout_alignParentRight="true"
                android:layout_centerVertical="true"
                android:layout_marginRight="10dp"
                android:background="@color/transparent_background_color"
                android:paddingBottom="5dp"
                android:paddingLeft="5dp"
                android:paddingRight="15dp"
                android:paddingTop="5dp" />

        </RelativeLayout>

        <android.support.v7.widget.RecyclerView
            android:id="@+id/usedTabs"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_margin="0dp" />
    </LinearLayout>

</RelativeLayout>