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[widget_previews] Intercept prohibited hot reloads and hot restart instead #192697

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#193968
#193447
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[widget_previews] Intercept prohibited hot reloads and hot restart instead#192697
#193968
#193447
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P2Important issues not at the top of the work lista: widget previewsIssues related to the Widget Previewer toolingc: proposalA detailed proposal for a change to Flutterteam-toolOwned by Flutter Tool teamtoolAffects the "flutter" command-line tool. See also t: labels.triaged-toolTriaged by Flutter Tool team

Description

@navaronbracke
navaronbracke
opened on Sep 12, 2026

Use case

When using widget previews using flutter widget-preview start and hot reload is prohibited, the widget previewer should try hot restarting instead, since we cannot do it ourselves, since we do not control stdin for the previewer process.

Proposal

Have the widget previewer intercept messages such as

Exception: Const class cannot remove fields: Library:'package:my_project/foo/bar.dart' Class: Bar
Hot reload rejected due to unsupported changes. Try performing a hot restart instead.

log that a hot reload was prevented and that a hot restart will be done instead.

Activity

  1. mbcorona
    added
    toolAffects the "flutter" command-line tool. See also t: labels.
    c: proposalA detailed proposal for a change to Flutter
    team-toolOwned by Flutter Tool team
    on Sep 14, 2026
  2. bkonyi
    added
    P2Important issues not at the top of the work list
    triaged-toolTriaged by Flutter Tool team
    a: widget previewsIssues related to the Widget Previewer tooling
    on Sep 18, 2026
  3. auto-submit
    closed this as completedin #193447on Oct 7, 2026
  4. andywolff
    added a commit that references this issue on Oct 7, 2026

    [flutter_tools] Intercept prohibited hot reloads in widget preview an…

    42d685b
  5. richyo-codes
    added a commit that references this issue on Oct 8, 2026

    Revert: [flutter_tools] Intercept prohibited hot reloads in widget pr…

    383b618

  6. github-actions commented on Oct 21, 2026

    @github-actions
    github-actionsBot
    on Oct 21, 2026 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  7. github-actions
    locked as resolved and limited conversation to collaborators on Oct 21, 2026
  8. suryaKommana2662
    added 2 commits that reference this issue on Oct 29, 2026

    [flutter_tools] Intercept prohibited hot reloads in widget preview an…

    eaa301e

    Revert: [flutter_tools] Intercept prohibited hot reloads in widget pr…

    d03668b
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    P2Important issues not at the top of the work lista: widget previewsIssues related to the Widget Previewer toolingc: proposalA detailed proposal for a change to Flutterteam-toolOwned by Flutter Tool teamtoolAffects the "flutter" command-line tool. See also t: labels.triaged-toolTriaged by Flutter Tool team

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