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fix(android): add null check for textInputPlugin in FlutterView#180386

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LailaiMaster:fix/text-input-plugin-npe
Feb 11, 2026
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fix(android): add null check for textInputPlugin in FlutterView#180386
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LailaiMaster:fix/text-input-plugin-npe

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@LailaiMaster LailaiMaster commented Dec 30, 2025

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Prevents NPE in onProvideAutofillVirtualStructure when attachToEngineAutomatically is false and autofill is triggered before manual engine attachment.

Added null safety check with early return and debug warning. Maintains backward compatibility.

Fixes: /issues/149792#180383

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Note: The Flutter team is currently trialing the use of Gemini Code Assist for GitHub. 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.

Prevents NPE in onProvideAutofillVirtualStructure when
attachToEngineAutomatically is false and autofill is triggered
before manual engine attachment.

Added null safety check with early return and debug warning.
Maintains backward compatibility.

Fixes: flutter/issues/149792flutter#180383
@LailaiMaster LailaiMaster requested a review from a team as a code owner December 30, 2025 11:52
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It looks like this pull request may not have tests. Please make sure to add tests or get an explicit test exemption before merging.

If you are not sure if you need tests, consider this rule of thumb: the purpose of a test is to make sure someone doesn't accidentally revert the fix. Ask yourself, is there anything in your PR that you feel it is important we not accidentally revert back to how it was before your fix?

Reviewers: Read the Tree Hygiene page and make sure this patch meets those guidelines before LGTMing. If you believe this PR qualifies for a test exemption, contact "@test-exemption-reviewer" in the #hackers channel in Discord (don't just cc them here, they won't see it!). The test exemption team is a small volunteer group, so all reviewers should feel empowered to ask for tests, without delegating that responsibility entirely to the test exemption group.

@github-actions github-actions Bot added platform-android Android applications specifically engine flutter/engine related. See also e: labels. team-android Owned by Android platform team labels Dec 30, 2025

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Code Review

This pull request correctly adds null checks for textInputPlugin in onProvideAutofillVirtualStructure and autofill methods within FlutterView.java. This prevents potential NullPointerExceptions when these methods are called before the FlutterEngine is attached. The fix is sound and addresses the issue. My feedback includes minor stylistic suggestions to align with the project's coding standards.

@camsim99 camsim99 requested a review from loic-sharma January 5, 2026 17:07

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The case this addresses makes sense to me. We'll need (1) a second review (I'll request) and (2) a unit test to verify that if textInputPlugin is null, whichever method does not get called (can test this with verify.

@camsim99 camsim99 requested a review from a team January 12, 2026 16:06

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The solution sounds good to me, but I'll let the Android team do the second approval as I'm not an expert in this area. Please feel free to ping me again here if needed!

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Looks good to me but still needs a test in case we accidentally regress this fix--you can use verify for this.

@camsim99 camsim99 requested a review from a team January 20, 2026 21:53

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Thanks for the test--LGTM. Just need to fix formatting + a second review!

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LGTM

@gmackall gmackall added the autosubmit Merge PR when tree becomes green via auto submit App label Feb 10, 2026
@auto-submit auto-submit Bot added this pull request to the merge queue Feb 10, 2026
Merged via the queue into flutter:master with commit ed1922e Feb 11, 2026
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@flutter-dashboard flutter-dashboard Bot removed the autosubmit Merge PR when tree becomes green via auto submit App label Feb 11, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 11, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 11, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 11, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 12, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 12, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 12, 2026
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 13, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 13, 2026
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 14, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 14, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 14, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 15, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 15, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 15, 2026
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 16, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 16, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 17, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 17, 2026
engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Feb 17, 2026
rickhohler pushed a commit to rickhohler/flutter that referenced this pull request Feb 19, 2026
…ter#180386)

Prevents NPE in onProvideAutofillVirtualStructure when
attachToEngineAutomatically is false and autofill is triggered before
manual engine attachment.

Added null safety check with early return and debug warning. Maintains
backward compatibility.

Fixes:
flutter/issues/149792flutter#180383

<!--
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*Replace this paragraph with a description of what this PR is changing
or adding, and why. Consider including before/after screenshots.*

*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.*

*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
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- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
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[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
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mboetger pushed a commit to mboetger/flutter that referenced this pull request Mar 26, 2026
…ter#180386)

Prevents NPE in onProvideAutofillVirtualStructure when
attachToEngineAutomatically is false and autofill is triggered before
manual engine attachment.

Added null safety check with early return and debug warning. Maintains
backward compatibility.

Fixes:
flutter/issues/149792flutter#180383

<!--
Thanks for filing a pull request!
Reviewers are typically assigned within a week of filing a request.
To learn more about code review, see our documentation on Tree Hygiene:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
-->

*Replace this paragraph with a description of what this PR is changing
or adding, and why. Consider including before/after screenshots.*

*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.*

*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].
- [ ] 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].

**Note**: The Flutter team is currently trialing the use of [Gemini Code
Assist for
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Comments from the `gemini-code-assist` bot should not be taken as
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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
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[Features we expect every widget to implement]:
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[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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