recyclerview/androidx.recyclerview.widget/DiffUtil/calculateDiff

calculateDiff

@NonNull
open fun calculateDiff(@NonNull cb: DiffUtil.Callback): DiffUtil.DiffResult(source)

Calculates the list of update operations that can covert one list into the other one.

Return

A DiffResult that contains the information about the edit sequence to convert the old list into the new list.

Parameters

cb

The callback that acts as a gateway to the backing list data

@NonNull
open fun calculateDiff(@NonNull cb: DiffUtil.Callback, detectMoves: Boolean): DiffUtil.DiffResult(source)

Calculates the list of update operations that can covert one list into the other one.

If your old and new lists are sorted by the same constraint and items never move (swap positions), you can disable move detection which takes O(N^2) time where N is the number of added, moved, removed items.

Return

A DiffResult that contains the information about the edit sequence to convert the old list into the new list.

Parameters

cb

The callback that acts as a gateway to the backing list data

detectMoves

True if DiffUtil should try to detect moved items, false otherwise.