Use UITableView reconfigureRows and UICollectionView reconfigureItems

[laevandus]

Use UITableView reconfigureRows and UICollectionView reconfigureItems starting from iOS 15 and tvOS 15. Increases performance since cells are not recreated and reduces UI glitches when there are multiple consecutive updates to the same cell. Sometimes we still would like to reload so there is a separate closure for making that decision.

Checklist

• All tests are passed.
• Added tests.
• Documented the code using Xcode markup.
• Searched existing pull requests for ensure not duplicated.

Description

Since iOS and tvOS 15 there are new reconfigureRows and reconfigureItems methods which do not trigger cell recreation. Gives better performance since cells are just updated, not recreated from scratch. Also useful since when there are multiple updates to the same index path, we do not run the reload cell animation.

Related Issue

Resolves issue 158

Motivation and Context

• Better performance and more pleasing UI updates

Impact on Existing Code

• Instead of full cell reload, now we reconfigure existing cells on ChangeSet.elementUpdated

[ra1028]

Hi,
I'm not really familiar with the new API BUT I think it's not a complete replacement of reloadItems because it doen't cover some cases like the tableView needs to recreate the cells in case the data source returns another cell type/instance under conditions.

See also: https://developer.apple.com/documentation/uikit/uicollectionview/3801889-reconfigureitems

It improves performance under certain conditions, but may not be suitable as an official extension to DifferenceKit, as it doesn't cover all common cases.
I don't say this library is in maintenance mode completely but I'm not planning any breaking changes in the future, so I recommend that you set up a custom extension for your project.

[laevandus]

Thank you for the answer.Best regards,ToomasOn 16. Feb 2024, at 17:49, Ryo Aoyama ***@***.***> wrote: Hi, I'm not really familiar with the new API BUT I think it's not a complete replacement of reloadItems because it doen't cover some cases like the tableView needs to recreate the cells in case the data source returns another cell type/instance under conditions. See also: https://developer.apple.com/documentation/uikit/uicollectionview/3801889-reconfigureitems It improves performance under certain conditions, but may not be suitable as an official extension to DifferenceKit, as it doesn't cover all common cases. I don't say this library is in maintenance mode completely but I'm not planning any breaking changes in the future, so I recommend that you set up a custom extension for your project. —Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you authored the thread.Message ID: ***@***.***>