 <shape 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >

    <solid 
        android:color="#ffffff" />

    <stroke 
        android:color="#aaaaaa"
        android:width="1px" />

    <padding
        android:top="0px"
        android:bottom="0px"
        android:left="0px"
        android:right="0px" />

</shape> 
