[iOS] CollectionView not applying "Selected" VisualState to pre-selected items

[jsuarezruiz]

Description of Change

Fix issue where the CollectionView not applying "Selected" VisualState to pre-selected items (initial selection).

Issues Resolved

• fixes [Bug] [iOS] SelectedItems custom image not displaying in iOS for CollectionView until tapped #14513
• fixes [Bug] VisualStateManager not working for CollectionView, CollectionView not considered as Selected #14229
• fixes CollectionView not applying "selected" VisualState to pre-selected items (multi-select) #9511

API Changes

None

Platforms Affected

• iOS

Behavioral/Visual Changes

None

Before/After Screenshots

Not applicable

Testing Procedure

Launch Core Gallery and navigate to the issue 14513. If the selected item have a Red background, the test has passed.

PR Checklist

• Targets the correct branch
• Tests are passing (or failures are unrelated)

[jfversluis]

This works for a single selection, but doesn't work for initial multi-selection. E.g. 13592 that I merged just before this only has the first one with the proper visual

Weird thing is that selected does get set to true for the other cells, but it doesn't seem to renderer as such.

[danielcabral-code]

hey @jfversluis how would I go about implementing this fix? thanks!

[jfversluis]

Hey @danielcabral-code glad you found your way here, thank you!

Would you be able to grab the NuGet as described here and let us know if this fixes this issue? That will greatly speed up the review process. Make sure in this case you get the exact version of 5.0.0.7746

Besides verifying if this particular issue is fixed also be sure to check other scenarios in the same area to make sure that this fix doesn't accidentally has side-effects 🙂

Thanks!

[jfversluis]

I did some additional testing and actually it seems to look good for me. Please still test whatever you can @danielcabral-code. In 24 hours this should now also be part of the nightly feed (find instructions in the README on the front page), so you could test that as well. Please open an issue if you still find anything.

[danielcabral-code]

Hey @jfversluis I finally got around to testing the fix. It worked a charm! Thanks!

[jfversluis]

Hooray, perfect, thanks for confirming @danielcabral-code !