dialog_list_bg.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item>
		<shape
			xmlns:android="http://schemas.android.com/apk/res/android"
			android:shape="rectangle">
			<solid
				android:color="@color/white"/>
			<corners
				android:bottomRightRadius="5dp"
				android:bottomLeftRadius="5dp"
				android:topLeftRadius="5dp"
				android:topRightRadius="5dp"/>
		</shape>
	</item>
</layer-list>