[.NET10] Made MauiCollectionView on iOS public

[kubaflo]

Note

Are you waiting for the changes in this PR to be merged?
It would be very helpful if you could test the resulting artifacts from this PR and let us know in a comment if this change resolves your issue. Thank you!

Issues Fixed

Fixes #29844

[Copilot]

Pull Request Overview

This PR exposes the MauiCollectionView handler on iOS and Mac Catalyst by making the class public and updating the public API listings.

• Changed MauiCollectionView visibility from internal to public
• Updated PublicAPI.Unshipped.txt for both net-ios and net-maccatalyst to include the new public API entries
• Removed duplicate XmlnsDefinitionAttribute removal entry in the net-ios API file

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt	Added MauiCollectionView entries for Mac Catalyst public API
src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt	Added MauiCollectionView entries and fixed duplicate removal
src/Controls/src/Core/Handlers/Items/iOS/MauiCollectionView.cs	Changed MauiCollectionView from internal to public

Comments suppressed due to low confidence (2)

src/Controls/src/Core/Handlers/Items/iOS/MauiCollectionView.cs:8

• [nitpick] The newly public MauiCollectionView should have corresponding XML docs under /docs/ that describe its purpose, usage, and public members.

public class MauiCollectionView : UICollectionView, IUIViewLifeCycleEvents, IPlatformMeasureInvalidationController

src/Controls/src/Core/Handlers/Items/iOS/MauiCollectionView.cs:8

• New public handler behavior should be covered by UI tests in TestCases.HostApp and by shared tests in TestCases.Shared.Tests—please add or update test cases accordingly.

public class MauiCollectionView : UICollectionView, IUIViewLifeCycleEvents, IPlatformMeasureInvalidationController

[Copilot]

There’s a duplicate removal entry for XmlnsDefinitionAttribute.XmlnsDefinitionAttribute on line 598—one of these should be removed.

Suggested change

*REMOVED*~Microsoft.Maui.Controls.XmlnsDefinitionAttribute.XmlnsDefinitionAttribute(string xmlNamespace, string clrNamespace) -> void

[PureWeen]

hmmmm

I wonder if we can replace this with

IUIViewLifeCycleEvents and use a weak event handler inside MauiCollectionView

[kubaflo]

You're thinking about getting rid of public void SetCustomDelegate(ICustomMauiCollectionViewDelegate customDelegate and WeakReference<ICustomMauiCollectionViewDelegate>? _customDelegate;

so that devs would do something like this:

class MyHandler
{
	public MyHandler(MauiCollectionView collectionView)
	{
		((IUIViewLifeCycleEvents)collectionView).MovedToWindow += (s, e) =>
		{

		};
	}
}

[kubaflo]

@PureWeen I've added a commit

[jsuarezruiz]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).

[PureWeen]

Can we delete ICustomMauiCollectionViewDelegate

[PureWeen]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 3 pipeline(s).