activity_main2.xml

<?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=".Main2Activity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="NOTES"
        android:textSize="30sp"
        android:background="@android:color/holo_orange_dark"
        android:gravity="center"/>
    <Button
        android:layout_width="30sp"
        android:layout_height="33sp"
        android:text="+"
        android:layout_alignParentRight="true"
        android:layout_marginRight="15dp"
        android:layout_marginTop="2.5sp"
        android:gravity="center"
        android:background="@android:color/black"
        android:textColor="@android:color/white"
        android:id="@id/addNoteButton"
        android:textSize="25sp"
        />
    <ImageView
        android:layout_width="30sp"
        android:layout_height="30sp"
        android:layout_marginTop="2.5sp"
        android:layout_marginLeft="15dp"
        android:id="@id/deleteAllimage"/>
    <android.support.v7.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_marginTop="40sp"
        android:id="@id/recyclerView"
        android:layout_height="match_parent">


    </android.support.v7.widget.RecyclerView>
</RelativeLayout>