Android radio button

 if you think that the user needs to see all available options side-by-side. If it’s not necessary to show all options side-by-side, use a spinner instead.RadioButton can be understood as a type of two-states button. Here, the two-states means that it can either be checked or unchecked.

Example of Android Radio Button:

To implement a single radio button separately as well as a radio button in Radio Group.

activity_main.xml:(File: activity_main.xml)

<?xml version=”1.0″ encoding=”utf-8″?> <RelativeLayout xmlns:android=”” xmlns:app=”” xmlns:tools=”” android:layout_width=”match_parent” android:layout_height=”match_parent” tools:context=”.MainActivity”>