The code for the RecyclerViewAdapter.java class is given below: package The layout for the loading view is defined in the item_loading.xml file as shown below: The layout for the rows of the RecyclerView is defined in item_row.xml file as shown below: The code for the activity_main.xml layout is given below: In the following section, we’ll demonstrate Endless Scrolling on RecyclerView by populating a List of Strings and loading the next set of List after a delay using Handlers. In order to detect that the user has scrolled to the end of the RecyclerView, we need to implement OnScrollListener() on the RecyclerView.Įnough Talk. Following diagram demonstrates what actually happens in the RecyclerView and its Adapter. Once the next set of elements is obtained, we remove the NULL element and add the next set to the bottom of the Data Structure. After adding a null, we notify the adapter the of the new element and fetch the next set of elements. Why NULL? In order to differentiate that element from the rest of the elements and show a different view type row. In order to show the loading icon view at the bottom of the RecyclerView, we need to first add a NULL element to the end of the Data Structure. How is this implemented? Typically in a simple RecyclerView, we load elements to the adapter from a Data Structure.

In order to show Loading icon at the bottom of RecyclerView while the next set of items are fetched, we need to use Multiple View Types in our RecyclerView Adapter. It’s recommended to go through this tutorial before proceeding ahead. The infinite scrolling in which the next set of rows are fetched from the DB/Server while showing a loading icon is commonly seen in many applications such as Facebook, Twitter. In this tutorial, we’ll be discussing and implementing Endless Scrolling or Infinite Scroll on RecyclerView in our Android Application.

Scroll bar android studio recyclerview