linphone-android/res/layout/history.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
  	android:background="@drawable/background"
    android:orientation="vertical" >
    
    <LinearLayout 
	    android:layout_width="match_parent"
	    android:layout_height="wrap_content"
	    android:orientation="horizontal">
        
        <ImageView 
            android:contentDescription="@string/content_description_all_calls"
            android:id="@+id/allCalls"
            android:src="@drawable/history_all"
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:scaleType="centerCrop"
		    android:adjustViewBounds="true"
		    android:layout_weight="1"/>
        
        <ImageView 
            android:contentDescription="@string/content_description_missed_calls"
            android:id="@+id/missedCalls"
            android:src="@drawable/history_missed"
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:scaleType="centerCrop"
		    android:adjustViewBounds="true"
		    android:layout_weight="1"/>
        
        <ImageView 
            android:contentDescription="@string/content_description_edit"
            android:id="@+id/edit"
            android:src="@drawable/history_edit"
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:scaleType="centerCrop"
		    android:adjustViewBounds="true"
		    android:layout_weight="1"/>
        
        <ImageView 
            android:contentDescription="@string/content_description_validate"
            android:id="@+id/ok"
            android:src="@drawable/ok"
            android:visibility="gone"
		    android:layout_width="match_parent"
		    android:layout_height="match_parent"
		    android:scaleType="centerCrop"
		    android:adjustViewBounds="true"
		    android:layout_weight="1"/>
        
    </LinearLayout>
    
    <ExpandableListView 
        android:id="@+id/historyList"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="@android:color/darker_gray"
        android:cacheColorHint="@color/transparent"
        android:dividerHeight="1dp" />

</LinearLayout>