[ios][pv] quick fix to enable and re-enable web view's gesture recognizer #179908
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hellohuanlin
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Dec 15, 2025
| ├── Child 1 | ||
| └── Child 2 | ||
| ├── Child 2.1 | ||
| └── Child 2.2 [*] |
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this mimic a simple use case with just 1 web view
hellohuanlin
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Dec 15, 2025
| └── Child 3 | ||
| └── Child 3.1 (Web View) | ||
| ├── Child 3.1.1 | ||
| └── Child 3.1.2 [*] |
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This is a platform view with 2 web views
hellohuanlin
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Dec 15, 2025
| └── Child 3.1.1 | ||
| └── Child 3.1.2 | ||
| ├── Child 3.1.2.1 | ||
| └── Child 3.1.2.2 [*] |
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this is when adding a web view inside another web view. I doubt anyone would do that, but just add this to verify correctness of DFS
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jmagman
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I'd like integration tests for these gesture issues instead of unit tests checking the hacks. That will let us detect this with betas in CI instead of manual testing being needed. Can be a follow-up PR.
engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm
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| for (UIGestureRecognizer* recognizer in recognizers) { | ||
| if (recognizer.enabled && | ||
| [NSStringFromClass([recognizer class]) hasSuffix:@"TouchEventsGestureRecognizer"]) { | ||
| recognizer.enabled = NO; |
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This needs a comment, a link back to an issue or PR comment about what this is working around.
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done (added at 3 lines above):
// This is to fix a bug on iOS 26 where web view link is not tappable.
// We reset the web view's WKTouchEventsGestureRecognizer in a bad state
// by disabling and re-enabling it.
// See: https://github.com/flutter/flutter/issues/175099.
// See also: https://github.com/flutter/engine/pull/56804 for an explanation of the
// bug on iOS 18.2, which is still valid on iOS 26.
// Warning: This is just a quick fix that patches the bug. For example,
// touches on a drawing website is still not completely blocked. A proper solution
// should rely on overriding the hitTest behavior.
// See: https://github.com/flutter/flutter/issues/179916.
engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViewsTest.mm
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jmagman
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LGTM but @vashworth should review.
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Oh, we should consider adding a way to opt out as a last resort. See example: https://github.com/vashworth/flutter/blob/d99ac3921f6494d59304bed65b02a15a9d6ba762/engine/src/flutter/shell/platform/darwin/ios/framework/Source/FlutterPlatformViews.mm#L708-L714 |
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Good idea! |
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#179895) …dget API) (#179659)" This reverts commit 87d1589. *Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.* We found a quick fix ([PR here](#179908)), so revert it and revisit `hitTest` later. *List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.* NA *If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].* ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
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Manual roll Flutter from d81baab to 57c3f8b (38 revisions) Manual roll requested by stuartmorgan@google.com flutter/flutter@d81baab...57c3f8b 2025-12-17 bruno.leroux@gmail.com Add FloatingActionButtonTheme (flutter/flutter#179736) 2025-12-17 engine-flutter-autoroll@skia.org Roll Skia from b1569739f431 to fb576bd6827a (1 revision) (flutter/flutter#179989) 2025-12-17 bruno.leroux@gmail.com Update more comments related to theme normalization (flutter/flutter#179682) 2025-12-17 engine-flutter-autoroll@skia.org Roll Skia from cce9b86bda7d to b1569739f431 (1 revision) (flutter/flutter#179979) 2025-12-17 jobguldemeester@gmail.com Adds property passthrough for CheckboxListTile, SwitchListTile and RadioListTile (flutter/flutter#178098) 2025-12-17 engine-flutter-autoroll@skia.org Roll Dart SDK from ca949b915846 to 3793f3d2d0c4 (2 revisions) (flutter/flutter#179973) 2025-12-17 engine-flutter-autoroll@skia.org Roll Skia from 318400199beb to cce9b86bda7d (1 revision) (flutter/flutter#179976) 2025-12-17 ahmedsameha1@gmail.com Make sure that a CupertinoTextFormFieldRow doesn't crash in 0x0 envir… (flutter/flutter#179932) 2025-12-17 ahmedsameha1@gmail.com Make sure that a CupertinoTabView doesn't crash in 0x0 environment (flutter/flutter#179845) 2025-12-17 ahmedsameha1@gmail.com Make sure that a CupertinoTextField doesn't crash in 0x0 environment (flutter/flutter#179865) 2025-12-17 ahmedsameha1@gmail.com Make sure that a CupertinoSwitch doesn't crash in 0x0 environment (flutter/flutter#179748) 2025-12-17 116356835+AbdeMohlbi@users.noreply.github.com Update `BuildContext` docs to make it easier to understand (flutter/flutter#178616) 2025-12-17 41930132+hellohuanlin@users.noreply.github.com [ios][pv] quick fix to enable and re-enable web view's gesture recognizer (flutter/flutter#179908) 2025-12-17 biggs0125@gmail.com Deduplicate wasm dry run entries in analytics. 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…izer (#179908) This is a quick fix to the web view/admob not tappable issue. It performs DFS on a platform view hierarchy to find a web view. If found, it performs another DFS into the web view to "fix" a gesture recognizer. Warning: This is just a "quick fix" that patches the bug. However, a real solution should rely on overriding the "hitTest" behavior. For example, there's still a existing bug that a drawing website's touch is not completely blocked (see #179916). This can only be fixed by "hitTest". However, "hitTest" approach requires plugin updates and would take much longer time, so we decided to [revert it](#179895). But we should revisit after putting out the fire. #175099 #165787 ## Pre-launch Checklist - [x] I read the [Contributor Guide] and followed the process outlined there for submitting PRs. - [x] I read the [Tree Hygiene] wiki page, which explains my responsibilities. - [x] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement]. - [x] I signed the [CLA]. - [x] I listed at least one issue that this PR fixes in the description above. - [x] I updated/added relevant documentation (doc comments with `///`). - [x] I added new tests to check the change I am making, or this PR is [test-exempt]. - [x] I followed the [breaking change policy] and added [Data Driven Fixes] where supported. - [ ] All existing and new tests are passing. If you need help, consider asking for advice on the #hackers-new channel on [Discord]. **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed. <!-- Links --> [Contributor Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview [Tree Hygiene]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md [test-exempt]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests [Flutter Style Guide]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md [Features we expect every widget to implement]: https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement [CLA]: https://cla.developers.google.com/ [flutter/tests]: https://github.com/flutter/tests [breaking change policy]: https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes [Discord]: https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md [Data Driven Fixes]: https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md
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…sture recognizer (#180522) Stable CP PR: #180522 Beta CP PR: #179974 Original PR: #179908 The "cherry-pick template" linked in https://github.com/flutter/flutter/wiki/Flutter-Cherrypick-Process/e7b042dd481d4ac66477fb281b6e626e8dba8a4e seems to be broken, so I copied the template from previous CP. ### Issue Link: What is the link to the issue this cherry-pick is addressing? #175099 #165787 ### Impact Description: What is the impact (ex. visual jank on Samsung phones, app crash, cannot ship an iOS app)? Does it impact development (ex. flutter doctor crashes when Android Studio is installed), or the shipping of production apps (the app crashes on launch). This information is for domain experts and release engineers to understand the consequences of saying yes or no to the cherry pick. WebViews (including ads) on iOS 26 are unclickable after being scrolled or after a Flutter menu is open and then closed. This is a serious regression that impacts revenue. This impacts all Flutter apps running on iOS 26 that use WebViews. ### Changelog Description: Explain this cherry pick: * In one line that is accessible to most Flutter developers. * That describes the state prior to the fix. * That includes which platforms are impacted. See [best practices](https://github.com/flutter/flutter/blob/main/docs/releases/Hotfix-Documentation-Best-Practices.md) for examples. < Replace with changelog description here > [flutter/165787, flutter/175099] When WebViews are scrolled on iOS 26, they become unclickable. ### Workaround: Is there a workaround for this issue? None ### Risk: What is the risk level of this cherry-pick? ### Test Coverage: Are you confident that your fix is well-tested by automated tests? ### Validation Steps: What are the steps to validate that this fix works? Use sample project from #165787 (comment). Touch and scroll on an ad, then try to click the ad. The ad will be unclickable. #175099 #165787 **Note**: The Flutter team is currently trialing the use of [Gemini Code Assist for GitHub](https://developers.google.com/gemini-code-assist/docs/review-github-code). Comments from the `gemini-code-assist` bot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed.
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This is a quick fix to the web view/admob not tappable issue. It performs DFS on a platform view hierarchy to find a web view. If found, it performs another DFS into the web view to "fix" a gesture recognizer.
Warning: This is just a "quick fix" that patches the bug. However, a real solution should rely on overriding the "hitTest" behavior.
For example, there's still a existing bug that a drawing website's touch is not completely blocked (see #179916). This can only be fixed by "hitTest". However, "hitTest" approach requires plugin updates and would take much longer time, so we decided to revert it. But we should revisit after putting out the fire.
#175099
#165787
Pre-launch Checklist
///).If you need help, consider asking for advice on the #hackers-new channel on Discord.
Note: The Flutter team is currently trialing the use of Gemini Code Assist for GitHub. Comments from the
gemini-code-assistbot should not be taken as authoritative feedback from the Flutter team. If you find its comments useful you can update your code accordingly, but if you are unsure or disagree with the feedback, please feel free to wait for a Flutter team member's review for guidance on which automated comments should be addressed.