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[local_auth_darwin] Fix Swift 6 concurrency analyzer errors from lifecycle delegate methods - #13296

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jmagman:la-swift
Oct 16, 2026
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@jmagman jmagman commented Oct 16, 2026 •

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FlutterApplicationLifeCycleDelegate / FlutterSceneLifeCycleDelegate protocol requirements are nonisolated, remove MainActor.

From #10836

Fixes flutter/flutter#194594

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// and applicationDidBecomeActive for apps that haven't migrated yet.
#if os(iOS)
@MainActor
public func sceneDidBecomeActive(_ scene: UIScene) {

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}

@MainActor
public func applicationDidBecomeActive(_ application: UIApplication) {

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@jmagman jmagman added CICD Run CI/CD and removed CICD Run CI/CD labels Oct 16, 2026
@stuartmorgan

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In general, I would expect that getting plugins to compile cleanly in strict mode is going to be pretty messy until the engine is fixed to annotate its protocols. The engine contract has always been to call method on the main thread, and plugins assume (and often need) that, but the annotations aren't in place.

Doing it in the other order in all plugins will probably require a bunch of workarounds.

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jmagman marked this pull request as ready for review October 16, 2026 21:27

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Code Review

This pull request updates the local_auth_darwin package to version 2.0.5. It removes the @MainActor attribute from the sceneDidBecomeActive and applicationDidBecomeActive methods in LocalAuthPlugin.swift, and updates the CHANGELOG.md and pubspec.yaml files. There are no review comments, and I have no feedback to provide.

@jmagman

jmagman commented Oct 16, 2026

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In general, I would expect that getting plugins to compile cleanly in strict mode is going to be pretty messy until the engine is fixed to annotate its protocols. The engine contract has always been to call method on the main thread, and plugins assume (and often need) that, but the annotations aren't in place.

Doing it in the other order in all plugins will probably require a bunch of workarounds.

I'm sure there's a lot more to do here, I'm currently wack-a-moleing the errors from flutter/flutter#194594 so we can get that fixed asap.

There really weren't that many swift 6 errors though.

@jmagman jmagman added the autosubmit Merge PR when tree becomes green via auto submit App label Oct 16, 2026
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auto-submit Bot merged commit f8262d2 into flutter:main Oct 16, 2026
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@jmagman
jmagman deleted the la-swift branch October 16, 2026 23:45
opensource-fork-sync Bot pushed a commit to cla7aye15I4nd/opensource-flutter__flutter that referenced this pull request Oct 19, 2026
flutter/packages@93eede7...10a178c

2026-10-19 [email protected] [material_ui]
Fixes SearchAnchor and SearchBar semantics (flutter/packages#12680)
2026-10-17 [email protected] [shared_preferences] switch to ffi/jni
pigeon (flutter/packages#12329)
2026-10-17 [email protected]
[in_app_purchase_storekit] Add show manage subscriptions path
(flutter/packages#12454)
2026-10-17 [email protected] [material_ui] Fix installing command
material UI (flutter/packages#13135)
2026-10-16 [email protected] [file_selector_ios] Drop deprecated
UIDocumentPickerMode code path (flutter/packages#13292)
2026-10-16 [email protected] [camera_avfoundation] Fixes sendability
mismatch in completion handler (flutter/packages#13298)
2026-10-16 [email protected] [local_auth_darwin] Fix Swift 6 concurrency
analyzer errors from lifecycle delegate methods (flutter/packages#13296)
2026-10-16 [email protected] [pointer_interceptor_ios] Use 'let' for
unmutated var (flutter/packages#13297)
2026-10-16 [email protected] [image_picker_ios] Fix Swift warnings in
ImagePickerPluginTests (flutter/packages#13299)
2026-10-16 [email protected] [camera]delete
fake bitrate/fps integration tests (flutter/packages#13291)
2026-10-16 [email protected] [google_maps_flutter_ios] Use 'let' for
unmutated var (flutter/packages#13300)
2026-10-16 [email protected] [VPAT] Declare input purpose on
a11y_assessments text fields (flutter/packages#13243)
2026-10-16 [email protected] [cupertino_ui]
Fix CupertinoMagnifier focalPointOffset animation scaling
(flutter/packages#13118)
2026-10-16 [email protected] [tool] Exempt `test_apps/` from version
and changelog checks (flutter/packages#13255)
2026-10-16 [email protected] [material_ui] Fallback theme
follows platform cherry pick (flutter/packages#13278)
2026-10-16 [email protected] Roll Flutter from
5c7e45a to a3d71d8 (26 revisions) (flutter/packages#13290)
2026-10-16 [email protected] [camera]do not
sleep to avoid hang due to merged thread (flutter/packages#13289)
2026-10-16 [email protected] [camera]fix
camera failure due to wrong jpg extension (flutter/packages#13285)

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/flutter-packages-flutter-autoroll
Please CC [email protected] on the revert to ensure that a
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To file a bug in Flutter:
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suryaKommana2662 pushed a commit to suryaKommana2662/flutter that referenced this pull request Oct 29, 2026
flutter/packages@93eede7...10a178c

2026-10-19 [email protected] [material_ui]
Fixes SearchAnchor and SearchBar semantics (flutter/packages#12680)
2026-10-17 [email protected] [shared_preferences] switch to ffi/jni
pigeon (flutter/packages#12329)
2026-10-17 [email protected]
[in_app_purchase_storekit] Add show manage subscriptions path
(flutter/packages#12454)
2026-10-17 [email protected] [material_ui] Fix installing command
material UI (flutter/packages#13135)
2026-10-16 [email protected] [file_selector_ios] Drop deprecated
UIDocumentPickerMode code path (flutter/packages#13292)
2026-10-16 [email protected] [camera_avfoundation] Fixes sendability
mismatch in completion handler (flutter/packages#13298)
2026-10-16 [email protected] [local_auth_darwin] Fix Swift 6 concurrency
analyzer errors from lifecycle delegate methods (flutter/packages#13296)
2026-10-16 [email protected] [pointer_interceptor_ios] Use 'let' for
unmutated var (flutter/packages#13297)
2026-10-16 [email protected] [image_picker_ios] Fix Swift warnings in
ImagePickerPluginTests (flutter/packages#13299)
2026-10-16 [email protected] [camera]delete
fake bitrate/fps integration tests (flutter/packages#13291)
2026-10-16 [email protected] [google_maps_flutter_ios] Use 'let' for
unmutated var (flutter/packages#13300)
2026-10-16 [email protected] [VPAT] Declare input purpose on
a11y_assessments text fields (flutter/packages#13243)
2026-10-16 [email protected] [cupertino_ui]
Fix CupertinoMagnifier focalPointOffset animation scaling
(flutter/packages#13118)
2026-10-16 [email protected] [tool] Exempt `test_apps/` from version
and changelog checks (flutter/packages#13255)
2026-10-16 [email protected] [material_ui] Fallback theme
follows platform cherry pick (flutter/packages#13278)
2026-10-16 [email protected] Roll Flutter from
5c7e45a to a3d71d8 (26 revisions) (flutter/packages#13290)
2026-10-16 [email protected] [camera]do not
sleep to avoid hang due to merged thread (flutter/packages#13289)
2026-10-16 [email protected] [camera]fix
camera failure due to wrong jpg extension (flutter/packages#13285)

If this roll has caused a breakage, revert this CL and set the roller
to dry run mode using the controls here:
https://autoroll.skia.org/r/flutter-packages-flutter-autoroll
Please CC [email protected] on the revert to ensure that a
human
is aware of the problem.

To file a bug in Flutter:
https://github.com/flutter/flutter/issues/new/choose

To report a problem with the AutoRoller itself, please file a bug:
https://issues.skia.org/issues/new?component=1389291&template=1850622

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md
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local_auth_darwin has main actor-isolated swift 6 errors

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