47.1 An Overview of the RecyclerView

Much like the ListView class outlined in the chapter entitled “Working with the Floating Action Button and Snackbar”, the purpose of the RecyclerView is to allow information to be presented to the user in the form of a scrollable list. The RecyclerView, however, provides a number of advantages over the ListView. In particular, the RecyclerView is significantly more efficient in the way it manages the views that make up a list, essentially reusing existing views that make up list items as they scroll off the screen instead if creating new ones (hence the name “recycler”). This both increases the performance and reduces the resources used by a list, a feature that is of particular benefit when presenting large amounts of data to the user.

Unlike the ListView, the RecyclerView also provides a choice of three built-in layout managers to control the way in which the list items are presented to the user:

•LinearLayoutManager...