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app/src/main/res/drawable/border_bottom.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
+    <item android:top="1dp" android:bottom="1dp">
+        <shape
+            android:shape="rectangle">
+            <stroke android:width="1dp" android:color="#FFDDDDDD" />
+            <solid android:color="#00000000" />
+        </shape>
+    </item>
+</layer-list>