res/layout/activity_sflphone_home.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
Copyright (C) 2004-2012 Savoir-Faire Linux Inc.                     
                                                                    
Author: Adrien Beraud <adrien.beraud@gmail.com>                     
                                                                    
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or   
(at your option) any later version.                                 
                                                                    
This program is distributed in the hope that it will be useful,     
but WITHOUT ANY WARRANTY; without even the implied warranty of      
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the       
GNU General Public License for more details.                        
                                                                    
You should have received a copy of the GNU General Public License   
along with this program; if not, write to the Free Software         
 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.          
                                                                    
Additional permission under GNU GPL version 3 section 7:            
                                                                    
If you modify this program, or any covered work, by linking or      
combining it with the OpenSSL project's OpenSSL library (or a       
modified version of that library), containing parts covered by the  
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Corresponding Source for a non-source form of such a combination    
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-->

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/SFLPhoneHomeLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center_horizontal"
    android:orientation="vertical" >

    <LinearLayout
        android:id="@+id/pagerLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:gravity="center_horizontal"
        android:orientation="horizontal" >

        <android.support.v4.view.ViewPager
            xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/pager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </LinearLayout>
    <!--
        tools:context=".SFLPhoneHome" />
    <LinearLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:orientation="vertical">
    -->

    <LinearLayout
        android:id="@+id/callButtonLayout"
        android:layout_width="match_parent"
        android:layout_height="45dp"
        android:layout_below="@+id/pager"
        android:layout_weight="1"
        android:gravity="center_horizontal"
        android:orientation="horizontal" >

        <ImageButton
            android:id="@+id/buttonCall"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight=".5"
            android:background="@drawable/call_button"
            android:gravity="center_vertical"
            android:onClick="onClick"
            android:src="@drawable/ic_call" />

        <ImageButton
            android:id="@+id/buttonHangUp"
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight=".5"
            android:background="@drawable/hangup_button"
            android:gravity="center_vertical"
            android:onClick="onClick"
            android:src="@drawable/ic_hangup" />

        <ImageButton
            android:id="@+id/buttonIncomingCall"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="0"
            android:background="@drawable/hangup_button"
            android:drawable="@drawable/hangup_button"
            android:gravity="center_vertical"
            android:onClick="onClick"
            android:src="@drawable/ic_incomingcall" />
    </LinearLayout>

</LinearLayout>