activity_basic_form.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.godoro.androidbasics.BasicFormActivity">

    <TextView
        android:id="@+id/outputView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="@string/output"
        android:textAppearance="?android:attr/textAppearanceLarge" />


    <EditText
        android:id="@+id/inputEdit"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:inputType="text"
        android:text="@string/input"
        android:layout_below="@+id/outputView"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_marginTop="49dp">
        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/performButton"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:onClick="onClickPerform"
        android:text="@string/perform"
        android:layout_below="@+id/inputEdit"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_marginTop="65dp" />

</RelativeLayout>