Fragments, and What You Have Seen Already

Fragments can do most everything of what we have seen so far that activities can do:

• Fragments can use layout resources to show a UI
• Fragments can have a ViewModel — in fact, they can not only have their own, but they can share a ViewModel with the activity that hosts them
• Fragments have lifecycle methods, including both ones that you see in activities (e.g., onCreate() and onDestroy()) and ones that are distinct for fragments (e.g., onAttach() and onDetach())