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iOS Accessibility: during layout change, only specify the focus object when it is changed. #33972

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Jun 15, 2022
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iOS Accessibility: during layout change, only specify the focus object when it is changed. #33972

merged 1 commit into from
Jun 15, 2022

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cyanglaz
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We currently always specifies a new item to focus when layout changed. It adds a redundant focus request and sometimes mess up the focus if the accessibility focus is changed right before the layout change notification is handled.
See details in: flutter/flutter#104176 (comment)

Fixes: flutter/flutter#104176

I manually tested, this fix doesn't regress flutter/flutter#80991

This PR also will fix flutter/flutter#93030 and we can remove the workaround we had for 93030

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@cyanglaz cyanglaz requested review from jmagman and hellohuanlin June 10, 2022 21:17
@cyanglaz cyanglaz changed the title iOS Accessibility: , during layout change, only specify the focus object when it is changed. iOS Accessibility: during layout change, only specify the focus object when it is changed. Jun 10, 2022
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cc @chunhtai so you are aware of this change when you are back from your OOO :)

@cyanglaz cyanglaz marked this pull request as ready for review June 10, 2022 21:18
hellohuanlin
hellohuanlin reviewed Jun 10, 2022
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shell/platform/darwin/ios/framework/Source/accessibility_bridge.mm Outdated
ios_delegate_->PostAccessibilityNotification(
UIAccessibilityLayoutChangedNotification,
FindNextFocusableIfNecessary().nativeAccessibility);
(routeChanged || next != lastFocused) ? next : NULL);
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Should it be next.nativeAccessibility instead of next?

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Fixed, ptal

@cyanglaz cyanglaz added the waiting for tree to go green This PR is approved and tested, but waiting for the tree to be green to land. label Jun 15, 2022
@fluttergithubbot fluttergithubbot merged commit 922d3e0 into flutter:main Jun 15, 2022
@cyanglaz cyanglaz deleted the a11y_doubletap branch June 15, 2022 17:21
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
e070507 
…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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922d3e0 iOS Accessibility: during layout change, only specify the foc…
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…us object when it is changed. (flutter/engine#33972)
houhuayong pushed a commit to houhuayong/engine that referenced this pull request Jun 21, 2022
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iOS Accessibility: during layout change, only specify the focus objec…
3e0338f 
…t when it is changed. (flutter#33972)
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@hellohuanlin hellohuanlin hellohuanlin approved these changes

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iOS voice over focus wrong after calling setState() iOS a11y focus gets drawn back to Flutter from system dialog
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