I have an application where on the home page I have buttons for navigation through the application.
On that page I have a button "EXIT" which when clicked should take the user to the home screen on the phone where the application icon is.
How can I do that?
Android's design does not favor exiting an application by choice, but rather manages it by the OS. You can bring up the Home application by its corresponding Intent:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);