ring-android/app/src/main/res/layout/frag_imessaging.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <ListView
        android:id="@+id/message_list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@+id/form"
        android:stackFromBottom="true"
        android:transcriptMode="alwaysScroll"
        android:background="@color/sfl_dark_blue"
        android:layout_alignParentTop="true" >
    </ListView>

    <LinearLayout
        android:id="@+id/form"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:background="@color/darker_gray"
        android:weightSum="4" >

        <EditText
            android:id="@+id/send_im_edittext"
            android:layout_width="0dp"
            android:layout_weight="3"
            android:layout_height="wrap_content"
            android:imeOptions="actionSend"
            android:ems="10"
            android:inputType="textCapSentences|textImeMultiLine" />
        
        <Button 
            android:id="@+id/send_im_button"
             android:layout_width="0dp"
            android:layout_weight="1"
            android:layout_height="wrap_content"
            android:text="Send"
            android:background="@drawable/item_generic_selector"/>
    </LinearLayout>

</RelativeLayout>