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@hellohuanlin hellohuanlin commented Mar 19, 2025

This is a regression introduced by: https://github.com/flutter/flutter/pull/162785/files#diff-b08b98ecaa5bd434f8b4181793f2dad9389c32c5b8cdedb52b01a2d3355f51a9R26

It's reported by one of the customers. We are not able to reproduce it.

It's likely that flutterView itself is nil (rather than flutterView.screen being nil), because we reset flutterView when backgrounding the app

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.

b/403598670

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

If you need help, consider asking for advice on the #hackers-new channel on Discord.

@github-actions github-actions bot added platform-ios iOS applications specifically engine flutter/engine related. See also e: labels. team-ios Owned by iOS platform team labels Mar 19, 2025
@hellohuanlin hellohuanlin requested a review from cbracken March 19, 2025 22:55
@hellohuanlin hellohuanlin force-pushed the pv_regression_on_screen_scale branch from fd4be40 to 13b75bf Compare March 19, 2025 23:08
FlutterEngine* engine = [[FlutterEngine alloc] initWithName:@"foobar"];
[engine run];
XCTAssertTrue(engine.platformView != nullptr);
auto ios_context = engine.platformView->GetIosContext();
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Consider specifying the type explicitly here.

XCTAssertTrue(engine.platformView != nullptr);
auto ios_context = engine.platformView->GetIosContext();

auto pool = flutter::OverlayLayerPool{};
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Suggested change
auto pool = flutter::OverlayLayerPool{};
flutter::OverlayLayerPool pool;

pool.CreateLayer(ios_context, MTLPixelFormatBGRA8Unorm, 1);
XCTAssertEqual(pool.size(), 1u);

auto layer = pool.GetNextLayer();
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@cbracken cbracken Mar 20, 2025

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Unless this is a C++ smart pointer with a super complex type, use the explicit type here. If it is a super long complicated type, you can do:

using SomeType = LongComplex<Type<Foo, Bar>, Baz>;
SomeType layer = ...;

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LGTM stamp from a Japanese personal seal

LGTM modulo nits.

@hellohuanlin hellohuanlin force-pushed the pv_regression_on_screen_scale branch 2 times, most recently from 7608c19 to 0d8ccc1 Compare March 21, 2025 05:16
@hellohuanlin hellohuanlin force-pushed the pv_regression_on_screen_scale branch from 0d8ccc1 to c70794a Compare March 21, 2025 23:54
@jmagman jmagman added the autosubmit Merge PR when tree becomes green via auto submit App label Mar 24, 2025
@auto-submit auto-submit bot added this pull request to the merge queue Mar 24, 2025
Merged via the queue into flutter:master with commit 4cb18b3 Mar 24, 2025
171 of 172 checks passed
@flutter-dashboard flutter-dashboard bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Mar 24, 2025
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 25, 2025
@hellohuanlin hellohuanlin added the cp: beta cherry pick this pull request to beta release candidate branch label Mar 25, 2025
flutteractionsbot pushed a commit to flutteractionsbot/flutter that referenced this pull request Mar 25, 2025
This is a regression introduced by:
https://github.com/flutter/flutter/pull/162785/files#diff-b08b98ecaa5bd434f8b4181793f2dad9389c32c5b8cdedb52b01a2d3355f51a9R26

It's reported by one of the customers. We are not able to reproduce it. 

It's likely that `flutterView` itself is `nil` (rather than
`flutterView.screen` being `nil`), because we reset `flutterView` when
backgrounding the app

*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.*

b/403598670

*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.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- 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
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 25, 2025
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 28, 2025
@hellohuanlin hellohuanlin removed the cp: beta cherry pick this pull request to beta release candidate branch label Mar 28, 2025
hellohuanlin added a commit to hellohuanlin/flutter that referenced this pull request Mar 28, 2025
This is a regression introduced by:
https://github.com/flutter/flutter/pull/162785/files#diff-b08b98ecaa5bd434f8b4181793f2dad9389c32c5b8cdedb52b01a2d3355f51a9R26

It's reported by one of the customers. We are not able to reproduce it. 

It's likely that `flutterView` itself is `nil` (rather than
`flutterView.screen` being `nil`), because we reset `flutterView` when
backgrounding the app

*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.*

b/403598670

*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.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- 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
hellohuanlin added a commit to hellohuanlin/flutter that referenced this pull request Mar 28, 2025
…all (flutter#166024)

A follow up to flutter#165525

This checks against: 

1. flutterView being nil
2. flutterView's screen being nil
3. flutterView's screen's scale being 0

Again, since we can't repro, I am justing guessing here. 

*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.*

Internal only (See previous PR linked above)

*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].

<!-- 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
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 29, 2025
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 29, 2025
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Mar 31, 2025
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request May 21, 2025
zhangyuang pushed a commit to zhangyuang/flutter-fork that referenced this pull request Jun 9, 2025
This is a regression introduced by:
https://github.com/flutter/flutter/pull/162785/files#diff-b08b98ecaa5bd434f8b4181793f2dad9389c32c5b8cdedb52b01a2d3355f51a9R26

It's reported by one of the customers. We are not able to reproduce it. 

It's likely that `flutterView` itself is `nil` (rather than
`flutterView.screen` being `nil`), because we reset `flutterView` when
backgrounding the app

*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.*

b/403598670

*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.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- 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
zhangyuang pushed a commit to zhangyuang/flutter-fork that referenced this pull request Jun 9, 2025
…all (flutter#166024)

A follow up to flutter#165525

This checks against: 

1. flutterView being nil
2. flutterView's screen being nil
3. flutterView's screen's scale being 0

Again, since we can't repro, I am justing guessing here. 

*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.*

Internal only (See previous PR linked above)

*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].

<!-- 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
romanejaquez pushed a commit to romanejaquez/flutter that referenced this pull request Aug 14, 2025
This is a regression introduced by:
https://github.com/flutter/flutter/pull/162785/files#diff-b08b98ecaa5bd434f8b4181793f2dad9389c32c5b8cdedb52b01a2d3355f51a9R26

It's reported by one of the customers. We are not able to reproduce it. 

It's likely that `flutterView` itself is `nil` (rather than
`flutterView.screen` being `nil`), because we reset `flutterView` when
backgrounding the app

*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.*

b/403598670

*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.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
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romanejaquez pushed a commit to romanejaquez/flutter that referenced this pull request Aug 14, 2025
…all (flutter#166024)

A follow up to flutter#165525

This checks against: 

1. flutterView being nil
2. flutterView's screen being nil
3. flutterView's screen's scale being 0

Again, since we can't repro, I am justing guessing here. 

*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.*

Internal only (See previous PR linked above)

*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
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[Features we expect every widget to implement]:
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[Discord]:
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