[Catalyst] Click-Dragging Behavior in CollectionView

[Tamilarasan-Paranthaman]

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!

Root Cause of the issue

• On MacCatalyst, the drag event was previously triggered immediately upon clicking an item. PR [Catalyst] Fixed the CanMixGroups Set to False Still Allows Reordering Between Groups in CollectionView #28623 restricted this default behavior because the CanMixGroups logic was not functioning correctly. As a result, drag handling was shifted to a long press gesture recognizer. This change altered the default behavior, requiring users to long-press items to initiate a drag operation on Mac Catalyst.

Description of Change

• To achieve the same behavior, enabling drag and drop without a noticeable long press on Mac Catalyst, the gesture recognizer’s MinimumPressDuration was set to 0.1 seconds, reducing the delay and providing a more responsive drag experience that matches the original system behavior.

Issues Fixed

Fixes #29536

Tested the behaviour in the following platforms

• iOS
• Mac
• Android
• Windows

Screenshot

Before Fix	After Fix
Before-Fix.mov	After-Fix.mov

[dotnet-policy-service]

Hey there @@Tamilarasan-Paranthaman! Thank you so much for your PR! Someone from the team will get assigned to your PR shortly and we'll get it reviewed.

[Copilot]

Pull Request Overview

This PR restores a more responsive drag-and-drop experience on Mac Catalyst by reducing the long-press threshold to 0.1 seconds.

• Adds a #if MACCATALYST block to set MinimumPressDuration to 0.1 seconds in both reorderable view controllers.
• Ensures drag gestures match original system behavior without requiring a full long press.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
src/Controls/src/Core/Handlers/Items2/iOS/ReorderableItemsViewController2.cs	Add MACCATALYST-specific MinimumPressDuration adjustment to the long-press gesture recognizer.
src/Controls/src/Core/Handlers/Items/iOS/ReorderableItemsViewController.cs	Add MACCATALYST-specific MinimumPressDuration adjustment to the long-press gesture recognizer.

Comments suppressed due to low confidence (1)

src/Controls/src/Core/Handlers/Items2/iOS/ReorderableItemsViewController2.cs:169

• Add automated UI tests in TestCases.Shared.Tests and TestCases.HostApp to verify the reduced press duration behavior on Mac Catalyst and ensure tests run reliably against the new gesture timing.

_longPressGestureRecognizer.MinimumPressDuration = 0.1;

[rmarinho]

/azp run

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