Copy this file to drawable and Set this as background for the element using this command.
android:background="@drawable/shape"
<?xml version="1.0" encoding="UTF-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="#ffffffff" />
<stroke
android:width="2dp"
android:color="#ff000000" />
<padding
android:bottom="3dp"
android:left="12dp"
android:right="3dp"
android:top="3dp" />
<corners
android:bottomLeftRadius="10dp"
android:bottomRightRadius="10dp"
android:topLeftRadius="10dp"
android:topRightRadius="10dp" />
</shape>