Bottom border for list view in android

Question

Hi, I'm trying to add a bottom border my listview in android The code i used is

<ListView 
  android:id="@+id/listview"
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:layout_weight="1" 
  android:scrollbars="horizontal" 
  android:background="#ffffff"
  android:cacheColorHint="#ffffff"
  /> 

It is working when there is only lest no of items. But not working when no of items is more I mean when the items cannot display in on screen Thanks

The entire layout i used

>

 <LinearLayout
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:gravity="center"
    android:background="@drawable/navigationbar"
    >

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/search_icon"/>

 <LinearLayout
    android:orientation="horizontal"
    android:layout_width="5dp"
    android:layout_height="wrap_content"/>

<EditText   
    android:layout_width="220dp"
    android:layout_height="wrap_content"
    android:layout_marginTop="4dp"
    android:layout_marginBottom="2dp"
    android:singleLine="true"
    android:id="@+id/categoryListEditText"/>    

 <LinearLayout
    android:orientation="horizontal"
    android:layout_width="5dp"
    android:layout_height="wrap_content"/>

<Button
    android:layout_width="50dp"
    android:layout_height="wrap_content"
    android:layout_marginTop="4dp"
    android:layout_marginBottom="2dp"
    android:textSize="10dp"
    android:textStyle="bold"
    android:background="@drawable/switch_list_button"
    android:id="@+id/switchListsButton"/>

</LinearLayout>
    <TextView   style="@style/firstBannerTextView"
    android:text="Type a category name to filter the List."/>



    <TextView   
    style="@style/secondBannerTextView"     
    android:id="@+id/categoryList"
    />

<ListView 
  android:id="@+id/listview"
  android:layout_width="fill_parent" 
  android:layout_height="wrap_content" 
  android:layout_weight="1" 
  android:scrollbars="horizontal" 
  android:background="#ffffff"
  android:cacheColorHint="#ffffff"
  />