RecyclerView to reflect that the user has Instances that are backed up by (or extracted from) a There are three key types that you can use to identify selected items:įor detailed information about selection-key types, seeĮnables the selection library to access information about Determine which selection key type to use, then build a.To add selection support to a RecyclerView Items that can be eligible for selection, and how many items can be selected. YouĬan also retain control over policies controlling selection behavior, such as You retain control over the visual presentation of a selected item. RecyclerView list using touch or mouse input. Your own animator object by extending RecyclerView.ItemAnimator. If you want to provide custom animations, you can define This animator is an object thatĮxtends the abstract RecyclerView.ItemAnimator class. Uses an animator to change its appearance. Whenever an item changes, the RecyclerView If none of these layout managers suits your needs, you can create your own by One before, like the stars in an American flag. Items in a two-dimensional grid, with each column slightly offset from the StaggeredGridLayoutManager arranges the.Provides functionality like the older GridView layout. Using a RecyclerView with LinearLayoutManager provides functionality likeĪrranges the items in a two-dimensional grid, like the squares on a checkerboard. LinearLayoutManager arranges the items inĪ one-dimensional list.Support Library includes three standard layout managers, each of which offers many customization Performing expensive findViewById() lookups. Views in this manner improves performance by avoiding the creation of unnecessary views or To reuse (or recycle) a view, a layout manager may ask theĪdapter to replace the contents of the view with a different element from the dataset. Position the individual items on the screen and determine when to reuse item views that are no The RecyclerView uses a layout manager to Page describes some of the other possible customizations. Requirements, you can modify the standard behavior in a number of ways. To do is design the view for each view holder and write the code to update That most developers will need in many cases, the only customization you need RecyclerView provide all the functionality

You can customize the RecyclerView objects to

Android studio recyclerview grid layout