linphone-android/res/layout/incall.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">
    
    <FrameLayout
		android:layout_width="match_parent"
		android:layout_height="wrap_content">
       
		<LinearLayout
		    android:id="@+id/fragmentContainer"
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:paddingTop="20dp"
		    android:orientation="horizontal" />
	  	
	   	<fragment android:name="org.linphone.StatusFragment"
			android:id="@+id/status"
			android:layout_width="match_parent"
			android:layout_height="wrap_content" />
	
	</FrameLayout>

   <ImageView
       android:id="@+id/switchCamera"
       android:visibility="gone"
       android:paddingTop="20dp"
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentLeft="true"
       android:layout_alignParentTop="true"
       android:contentDescription="@string/content_description_switch_camera"
       android:src="@drawable/switch_camera" />
   
   <LinearLayout
	    android:id="@+id/menu"
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
		android:layout_alignParentBottom="true"
	    android:orientation="vertical">
  
       <LinearLayout
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:orientation="horizontal"
	        android:layout_weight="0.5">
	    
           	<View
               	android:layout_width="match_parent"
               	android:layout_height="75dp"
               	android:layout_weight="0.25"
               	android:visibility="invisible"/>
           
          	<View
               	android:layout_width="match_parent"
               	android:layout_height="75dp"
               	android:layout_weight="0.25"
               	android:visibility="invisible"/>
           
           	<View
            	android:layout_width="match_parent"
               	android:layout_height="75dp"
               	android:layout_weight="0.25"
               	android:visibility="invisible"/>
               
           	<ImageView 
               	android:id="@+id/transfer"
               	android:visibility="gone"
		    	android:layout_width="match_parent"
		    	android:layout_height="75dp"
		    	android:src="@drawable/options_transfer"
               	android:scaleType="fitXY"
		    	android:layout_weight="0.25" />
           
   	</LinearLayout>
   	
   	<LinearLayout
		android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    android:orientation="horizontal"
        android:layout_weight="0.5">
	    
        <View
        	android:layout_width="match_parent"
            android:layout_height="75dp"
            android:layout_weight="0.25"
            android:visibility="invisible"/>
        
       	<View
            android:layout_width="match_parent"
            android:layout_height="75dp"
            android:layout_weight="0.25"
            android:visibility="invisible"/>
        
        <View
            android:layout_width="match_parent"
            android:layout_height="75dp"
            android:layout_weight="0.25"
            android:visibility="invisible"/>
            
        <ImageView 
            android:id="@+id/addCall"
            android:visibility="gone"
   			android:layout_width="match_parent"
   			android:layout_height="75dp"
   			android:src="@drawable/options_add_call_alt"
            android:scaleType="fitXY"
   			android:layout_weight="0.25" />
           
 	</LinearLayout>
  	
   	<LinearLayout
		android:layout_width="match_parent"
	    android:layout_height="match_parent"
	    android:orientation="horizontal"
        android:layout_weight="0.5">
	    
        <ImageView
			android:contentDescription="@string/content_description_switch_video"
            android:id="@+id/video"
            android:layout_width="match_parent"
            android:layout_height="75dp"
            android:layout_weight="0.25"
            android:scaleType="fitXY"
            android:src="@drawable/video_off" />
           
 		<ImageView 
          	android:contentDescription="@string/content_description_toggle_micro"
            android:id="@+id/micro"
		    android:layout_width="match_parent"
		    android:layout_height="75dp"
		    android:src="@drawable/micro_on"
            android:scaleType="fitXY"
		    android:layout_weight="0.25"/>
           
		<ImageView 
          	android:contentDescription="@string/content_description_toggle_speaker"
            android:id="@+id/speaker"
		    android:layout_width="match_parent"
		    android:layout_height="75dp"
		    android:src="@drawable/speaker_off"
            android:scaleType="fitXY"
		    android:layout_weight="0.25"/>
               
		<ImageView 
            android:id="@+id/options"
		    android:layout_width="match_parent"
		    android:layout_height="75dp"
		    android:src="@drawable/options"
            android:scaleType="fitXY"
		    android:layout_weight="0.25" />
           
	</LinearLayout>
   	
	<LinearLayout
		   android:layout_width="match_parent"
		   android:layout_height="75dp"
		   android:orientation="horizontal"
	       android:layout_weight="0.5">
	    
           <ImageView 
          		android:contentDescription="@string/content_description_pause"
            	android:id="@+id/pause"
		    	android:layout_width="match_parent"
		    	android:layout_height="match_parent"
		    	android:src="@drawable/pause_off"
            	android:scaleType="fitXY"
		    	android:layout_weight="0.3"/>
           
           <ImageView 
         		android:contentDescription="@string/content_description_hang_up"
               	android:id="@+id/hangUp"
		    	android:layout_width="match_parent"
		    	android:layout_height="match_parent"
		    	android:src="@drawable/hangup"
               	android:scaleType="fitXY"
		    	android:layout_weight="0.3"/>
           
           <ImageView 
          		android:contentDescription="@string/content_description_numpad"
               	android:id="@+id/dialer"
		    	android:layout_width="match_parent"
		    	android:layout_height="match_parent"
		    	android:src="@drawable/dialer_alt"
              	android:scaleType="fitXY"
		    	android:layout_weight="0.3"/>
           
   		</LinearLayout>
   
	</LinearLayout>
  
  </RelativeLayout>