Add only top and bottom border on LinearLayout

I would like to add only a bottom and a top border on my Linearlayout. I have tried to do this :

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >

<item
    android:bottom="1dp"
    android:top="1dp">
    <shape android:shape="rectangle">
        <solid android:color="#FFFFFF" />
        <stroke
            android:width="1dp"
            android:color="#000" />
    </shape>
</item>
</layer-list>

But it add a border around the shape..

Could you help me please ?

Make this two file and put this code. you can set border top and bottom border,

main.xml

<TextView
      android:text="This is textline"
      android:background="@drawable/border_set"
/>

border_set.xml

This file located into full path project_root/res/drawable/border_set.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#FF000000" />
            <solid android:color="#FFDDDDDD" />

        </shape>
   </item>

   <item android:top="1dp" android:bottom="1dp"> 
      <shape 
        android:shape="rectangle">
            <stroke android:width="1dp" android:color="#000" />
            <solid android:color="#FFFFFF" />
        </shape>
   </item>

</layer-list>