1. Create a new xml file in drawable with this content ("rounded_corners.xml"):
xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:bottom="3px">
<shape android:shape="rectangle" >
<solid android:color="#fff" />
<corners android:radius="7dp" />
</shape>
</item>
</layer-list>
2. Set the background of the layout to the xml file we created in step 1
...
android:background="@drawable/rounded_corners"
...
That's it!
Hope it helps you create round corners in your Android app :)