<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" 
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    
    <TextView android:layout_width="fill_parent"
        android:layout_height="wrap_content" 
        android:text="@string/hello_world" />
    
    <EditText android:layout_width="match_parent" 
	    android:id="@+id/editText1"
        android:layout_height="wrap_content"
        android:hint="input the message and click the send button" >
    </EditText>
    
    <Button android:text="send"
        android:id="@+id/button1"
        android:layout_width="fill_parent" 
		android:layout_height="wrap_content">
    </Button>
</LinearLayout>