The XmlSerializer class provides a great way to convert (serialize) objects to XML and back (deserialize). However, it can be difficult to serialize collections such as Arrays and ArrayLists properly ...

You just need to concentrate on two files for now: MainActivity.java and activity_main.xml. To make life just a little simpler, Android Studio normally opens both these files as soon as it boots up.

The following code is the automatically-generated Manifest for a project I created using Android Studio’s “Empty Activity” template: <?xml version="1.0" encoding="utf-8"?> //Your Manifest ...