What is RecyclerView on Android?

RecyclerView came to replace both ListView and GridView (including entities supporting both).

RecyclerView is much more efficient than the two previous implementations, even using a setting of ViewHolder almost equal (we can not define optimization only in the ViewHolder aspect). One of the great advantages of this is the flexibility to be able to change from LayoutManager without having to implement a code truck just to have tiles or cards in our list.

As with ListView and GridView , RecyclerView needs extra entities to work, in this case we have LayoutManager (in the video I used LinearLayoutManager ) that is responsible for the redenrization of View of each item on the device.

We have Adapter which is responsible for binding data from the set passed to it to View (which will be the view of each item of RecyclerView ) and then send that View to LayoutManager .

And, finally, we have the ViewHolder that is responsible for caching the View 's created in the onCreateViewHolder() method to later reuse them by optimizing the work with RecyclerView .

Video: link