app/src/main/res/drawable/button_rounded_edge.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<solid android:color="#FFFFFF" />
<corners
android:bottomRightRadius="2dp"
android:bottomLeftRadius= "2dp"
android:topRightRadius= "2dp"
android:topLeftRadius= "2dp"/>
</shape>