fix(expo-google-signin): resolve presenting view controller from the key window on iOS - #9505
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…key window on iOS
🦋 Changeset detectedLatest commit: 74deedc The changes in this PR will be included in the next version bump. This PR includes changesets to release 2 packages
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API Changes Report
Summary
No API Changes DetectedAll packages have stable APIs with no detected changes. Report generated by Break Check Last ran on |
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository YAML (base), Organization UI (inherited) Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (1)
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Included review availability: 6 reviews are currently available. Your included PR review attempts over the past 7 days set your current allowance at 10 reviews per hour. 📝 WalkthroughWalkthroughThe iOS Google sign-in module now selects a foreground-active or foreground-inactive scene, prefers its key window, and falls back to a visible window with a root view controller. Presented-controller traversal stops when dismissal is in progress. A patch changeset documents the fix for Estimated code review effort: 2 (Simple) | ~10 minutes Merge Risk: 🟡 Moderate · up to The change fixes sign-in presentation for one multi-window case, but the current implementation can still select the wrong scene or a view hierarchy that is being dismissed, causing the consent sheet to fail to appear. These bounded correctness risks should be addressed or explicitly accepted before merge. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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Inline comments:
In `@packages/expo-google-signin/ios/ClerkGoogleSignInModule.swift`:
- Around line 146-149: Update the scene selection in the Google Sign-In
presenter lookup to consider only foreground scenes, remove the arbitrary
scenes.first fallback, and return nil when no foreground scene exists. When
multiple foreground scenes are available, resolve the scene associated with the
current Expo UI rather than relying on collection order.
- Around line 151-155: Update the window selection in the sign-in flow so the
key-window candidate is accepted only when it is usable, including having a
rootViewController and not being hidden; otherwise continue to the
visible-window fallback. Preserve the existing nil return when no usable window
or root view controller exists.
- Around line 157-161: Update the top-view-controller traversal around topVC to
reject any controller that isBeingDismissed: check rootVC before traversal, stop
traversal when topVC or its presented controller is being dismissed, and
validate the final topVC before returning it.
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📒 Files selected for processing (2)
.changeset/ios-google-signin-presenting-window.mdpackages/expo-google-signin/ios/ClerkGoogleSignInModule.swift
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Description
iOS native Google sign-in fails in apps that have more than one window or scene when sign-in is invoked.
This does not reproduce in a vanilla dev build, since single-window apps resolve
.firstcorrectly. I replicated it by adding a decoy window in the fixture app'sAppDelegate(windowLevelbelow.normal, no root view controller, unhidden shortly after launch). With that in place, sign-in rejects instantly with no auth sheet. With this fix and the same decoy, the Google consent sheet presents normally.Screen.Recording.2026-08-19.at.10.30.58.AM.mov
Fixes #9504
Resolves MOBILE-627
Checklist
pnpm testruns as expected.pnpm buildruns as expected.Type of change