RecyclerView makes it easy to efficiently display large sets of data. You supply the data and define how each item looks, and the RecyclerView library dynamically creates the elements when they're needed. As the name implies, RecyclerView recycles those individual elements. When an item scrolls off the screen, RecyclerView doesn't destroy its view. Instead, RecyclerView reuses the view for new items that have scrolled onscreen. This reuse vastly improves performance, improving your app's responsiveness and reducing power consumption.
Note: Besides being the name of the class, RecyclerView is also the name of the library. In this page, RecyclerView in code font always means the class in the RecyclerView library. Steps for implementing your RecyclerView If you're going to use RecyclerView, there are a few things you need to do. They'll be discussed in detail in the following sections.
First of all, decide what the list or grid is going to look like. Ordinarily you'll be able to use one of the RecyclerView library's standard layout managers.
Design how each element in the list is going to look and behave. Based on this design, extend the ViewHolder class. Your version of ViewHolder provides all the functionality for your list items. Your view holder is a wrapper around a View, and that view is managed by RecyclerView.
Define the Adapter that associates your data with the ViewHolder views.
There are also advanced customization options that let you tailor your RecyclerView to your exact needs.