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

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/notes_coordinator"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        android:id="@+id/notes_holder"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:id="@+id/current_note_label"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/activity_margin"
            android:layout_marginLeft="@dimen/activity_margin"
            android:layout_marginTop="@dimen/activity_margin"
            android:alpha=".6"
            android:text="@string/current_note"/>

        <TextView
            android:id="@+id/current_note_title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/activity_margin"
            android:layout_marginLeft="@dimen/normal_padding"
            android:layout_marginRight="@dimen/activity_margin"
            android:layout_marginTop="@dimen/activity_margin"
            android:layout_toRightOf="@+id/current_note_label"
            android:alpha=".6"/>

        <ScrollView
            xmlns:android="http://schemas.android.com/apk/res/android"
            android:id="@+id/notes_scrollview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_below="@+id/current_note_label"
            android:fillViewport="true">

            <EditText
                android:id="@+id/notes_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@null"
                android:gravity="top"
                android:inputType="textCapSentences|textMultiLine"
                android:paddingBottom="@dimen/activity_margin"
                android:paddingLeft="@dimen/activity_margin"
                android:paddingRight="@dimen/activity_margin"/>
        </ScrollView>
    </RelativeLayout>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/notes_fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/activity_margin"
        android:src="@mipmap/plus"
        app:backgroundTint="@color/colorPrimary"/>

</android.support.design.widget.CoordinatorLayout>