activity_help.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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"
    android:orientation="vertical"
    android:background="#d3d3d3"
    tools:context="com.example.nimal.help.Help">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginRight="10dp"
        android:hint="Area of Specaility"
        android:gravity="center"
        android:id="@+id/Area"/>


    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Retreive"
        android:layout_margin="10dp"
        android:onClick="retreival"
        />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:text="Suggest"
        android:layout_margin="10dp"
        android:onClick="suggestion"
            />


    </LinearLayout>

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ScrollView
            android:id="@+id/scrollView2"
            android:layout_width="300dp"
            android:layout_height="350dp"
            android:layout_alignParentStart="true"
            android:layout_toStartOf="@+id/floatingActionButton">

            <TextView
                android:id="@+id/ShowSugg"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_gravity="center"
                android:gravity="center"
                android:hint="Suggestions will appear here" />
        </ScrollView>


        <android.support.design.widget.FloatingActionButton
            android:id="@+id/floatingActionButton"
            android:layout_width="wrap_content"