main.xml

<LinearLayout 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"
    android:orientation="vertical">

<LinearLayout android:width="match_parent"
	      android:height="wrap_content">
    <EditText android:id="@+id/telephone_number"
	android:layout_weight="5"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
	android:phoneNumber="true"
        android:hint="@string/telephone_number" />


    <EditText android:id="@+id/sms_message"
        android:layout_weight="1"
        android:layout_width="0dp" 
        android:layout_height="wrap_content"
        android:hint="@string/sms_message" />

</LinearLayout>

    <EditText android:id="@+id/sms_message"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
	android:lines="6"
        android:hint="@string/sms_message" />

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/button_send"
	android:onClick="sendMessage" />
</LinearLayout>