Android border circle drawable.
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle" >
<corners
android:radius="45dp"
/>
<solid
android:color="@android:color/transparent"
/>
<padding
android:left="0dp"
android:top="0dp"
android:right="0dp"
android:bottom="0dp"
/>
<stroke
android:width="1dp"
android:color="@color/main_blue"
/>
</shape>