LinearLayoutManager: Positions items to look like a standard ListView.There are three types of Layout Managers by default: The RecyclerView has broken out of this functionality to allow for different kinds of layouts: Vertical, Horizontal, Grid, Staggered, or your own! The ListView used to do this work by itself. This object positions the RecyclerView’s items and tells them when to recycle items that have transitioned off-screen. The most important and interesting component of a RecyclerView is its LayoutManager. You can also create your own animations and apply them as needed. RecyclerView requires a ViewHolder, the RecyclerView knows which animation to apply to which item and adds them as required. The Views in RecyclerView comes with default animations that you don’t have to create or add yourself. This is it why it’s called a RecyclerView! To provide a new view, RecyclerView either creates a new ViewHolder object to inflate the layout and hold those references, or it recycles one from the existing stack. However, you have to create ViewHolders to keep references in memory. RecyclerView still uses an Adapter to act as a data source. The RecyclerView changed everything which was used in the ListView and GridView.
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