I have a `ScrollView` layout and it has a child `constraintLayout`. I made it like this so even in landscape mode, I can scroll through a long text. I am wondering where and how will I put the `FloatingActionButton` so it becomes on top of everything. When I try to add it, the button becomes scrollable too! (which is not a good thing because I want the button to be "floating")

Any suggestions

```
<?xml version="1.0" encoding="utf-8"?>
<ScrollView 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="org.cvsuimus.theflare.NewsDetailActivity">

    <android.support.constraint.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <ImageView
            android:id="@+id/ivImage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/newsdefault" />

        <TextView
            android:id="@+id/tvTitle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="16dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="16dp"
            android:text="Title"
            android:textColor="@color/primaryTextColor"
            android:textSize="25sp"
            android:textStyle="bold"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/ivImage" />

        <TextView
            android:id="@+id/tvAuthor"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="16dp"
            android:text="Author"
            android:textColor="@color/primaryTextColor"
            android:textSize="18sp"
            android:textStyle="bold"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.073"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tvTitle" />

        <TextView
            android:id="@+id/tvPubDate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginEnd="8dp"
            android:layout_marginStart="8dp"
            android:text="Publishing Date"
            android:textColor="@color/primaryTextColor"
            android:textSize="18sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.087"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tvAuthor" />

        <TextView
            android:id="@+id/tvContent"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginEnd="8dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="32dp"
            android:text="tvContent"
            android:textColor="@color/primaryTextColor"
            android:textSize="18sp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.067"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tvPubDate"
            app:layout_constraintVertical_bias="0.0"
            tools:text="Content" />

        <TextView
            android:id="@+id/Category"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginEnd="8dp"
            android:layout_marginLeft="16dp"
            android:layout_marginStart="8dp"
            android:layout_marginTop="8dp"
            android:text="Category:"
            android:textColor="@color/primaryTextColor"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toStartOf="@+id/tvCategory"
            app:layout_constraintHorizontal_bias="1.0"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/tvContent"
            app:layout_constraintVertical_bias="0.692" />

        <TextView
            android:id="@+id/tvCategory"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="16dp"
            android:layout_marginRight="128dp"
            android:layout_marginTop="8dp"
            android:text="Category"
            android:textColor="@color/primaryTextColor"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="1.0" />

        <android.support.design.widget.FloatingActionButton
            android:id="@+id/fabFavorite"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginBottom="8dp"
            android:layout_marginEnd="8dp"
            android:layout_marginRight="16dp"
            android:layout_marginTop="8dp"
            android:clickable="true"
            android:focusable="true"
            app:backgroundTint="@color/secondaryColor"
            app:fabSize="normal"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.975"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.935"
            app:rippleColor="@color/secondaryLightColor"
            app:srcCompat="@android:drawable/ic_input_add" />

    </android.support.constraint.ConstraintLayout>

</ScrollView>

```