drawable for line in bottom

bottom_line.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:bottom="0dp"
        android:left="-6dp"
        android:right="-6dp"
        android:top="-6dp">

        <shape android:shape="rectangle">
            <solid android:color="@android:color/transparent" />
            <stroke
                android:width="@dimen/_2sdp"
                android:color="#AAA" />
        </shape>
    </item>
</layer-list>