1. What Is RecyclerView?
RecyclerView is a ViewGroup under Android Lollipop, API 21, as a part of Android Support Library that is designed with the purpose to efficiently display large sets of data by recycling the views, that reduces memory and improves performance of the application as well.
2. Key Elements of RecyclerView
a. Adapter
The adapter is a holder that acts between the data source and the recyclerView. It takes the data set and binds that data to each item's view.
b. ViewHolder
The ViewHolder is an inner static class in the adapter that holds references to the views for each data item, thereby improving scrolling performance.
c. LayoutManager
The LayoutManager determines how the items are laid out in RecyclerView. Common options are:
LinearLayoutManager: Items will be displayed as a vertical or horizontal list.
GridLayoutManager: Items will be displayed as a grid.
StaggeredGridLayoutManager: Items will be laid out in a staggered grid.
3. Setting Up RecyclerView: Step-by-Step
Step 1: Add RecyclerView to Your Layout
In your activity_main.xml file:
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