How to do it...

1. Open the res/layout/activity_main.xml file and replace it as follows:

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <EditText 
        android:id="@+id/editTextTo" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:hint="To" /> 
    <EditText 
        android:id="@+id/editTextSubject" 
        android:layout_width="match_parent" 
        android:layout_height="wrap_content" 
        android:hint="Subject" /> 
    <EditText 
        android:id="@+id/editTextMessage" 
        android:layout_width="match_parent" 
        android:layout_height="0dp" 
        android:layout_weight="1" 
        android:gravity="top" 
        android:hint="Message" /> 
</LinearLayout> 

2. Run the code, or view the layout in the Design tab.