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

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/rv_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>
        
        <com.google.android.material.floatingactionbutton.FloatingActionButton
            android:id="@+id/fb_add"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentEnd="true"
            android:layout_marginEnd="20dp"
            android:src="@drawable/ic_add"
            android:layout_marginBottom="20dp"/>
            
</RelativeLayout>