"Android" Write drawable XML draw background with indicator bar at bottom

The effect is similar to the actionbar tag, with an indicator bar at the bottom.

Implementation code:

<?xml version= "1.0" encoding= "Utf-8"? ><layer-list xmlns:android= "http://schemas.android.com/apk/res/ Android ">    <item android:top=" -6DP "android:left=" -6DP "android:right=" -6DP ">        <shape xmlns: Android= "Http://schemas.android.com/apk/res/android" >            <!--  here to fill color--            <solid android: Color= "#2b7996"/>            <!--  change the bottom line color--            <stroke android:color= "#33b5e5" android:width= "6DP "/>        </shape>    </item></layer-list>

The key to achieve is to write on the android:top= " -6DP" android:left= " -6DP" android:right= " -6DP", the original existing left, right, top of the line "hidden", only the bottom of the line is left.