[iOS] ToolbarItems can no longer be manipulated after an incomplete "Back" gesture on iOS - fix

[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!

Description of Change

Moved the CollectionChanged event handler attachment for _tracker to the initialization logic, removing redundant event handler management from WillMoveToParentViewController. This simplifies event handling and ensures the handler is consistently attached.

Issues Fixed

Fixes #31278

[dotnet-policy-service]

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

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[PureWeen]

Can we add a uitest code this one?

[kubaflo]

@PureWeen, I don't think we can. We couldn't figure out how to create tests with only the iOS swipe gesture, and this one would have to do only a partial swipe

[jsuarezruiz]

@PureWeen, I don't think we can. We couldn't figure out how to create tests with only the iOS swipe gesture, and this one would have to do only a partial swipe

Could try to use the SwipeRightToLeft with a small swipe percentage:

maui/src/TestUtils/src/UITest.Appium/HelperExtensions.cs

Line 1050 in 936db46

public static void SwipeRightToLeft(this IApp app, double swipePercentage = 0.67, int swipeSpeed = 500, bool withInertia = true)

?

[kubaflo]

@PureWeen, I don't think we can. We couldn't figure out how to create tests with only the iOS swipe gesture, and this one would have to do only a partial swipe

Could try to use the SwipeRightToLeft with a small swipe percentage:

maui/src/TestUtils/src/UITest.Appium/HelperExtensions.cs

Line 1050 in 936db46

public static void SwipeRightToLeft(this IApp app, double swipePercentage = 0.67, int swipeSpeed = 500, bool withInertia = true)

?

It didn't work :/