Skip to content

avoid-inherited-widget-in-initstate

Group: Correctness
Path: lint/correctness/avoid-inherited-widget-in-initstate
Default: On (recommended)
Origin: Falcon
Domain: flutter
Rule: 75 of 512

recommendedflutter

Avoid inherited-widget subscriptions during initState. Checks direct BuildContext dependency calls and known subscribing Flutter of methods, including synchronous local helper calls.

Invalid

example.dartdart

import 'package:flutter/material.dart';
class S extends State<StatefulWidget> { void initState() {
Theme.of(context);
MediaQuery.of(context);
Directionality.of(context);
DefaultTextStyle.of(context);
IconTheme.of(context);
}}

Move inherited-widget subscriptions from `initState` to `didChangeDependencies`.

2class S extends State<StatefulWidget> { void initState() {

3Theme.of(context);

∙

Move inherited-widget subscriptions from `initState` to `didChangeDependencies`.

3Theme.of(context);

4MediaQuery.of(context);

∙

Move inherited-widget subscriptions from `initState` to `didChangeDependencies`.

4MediaQuery.of(context);

5Directionality.of(context);

∙

Move inherited-widget subscriptions from `initState` to `didChangeDependencies`.

5Directionality.of(context);

6DefaultTextStyle.of(context);

∙

Move inherited-widget subscriptions from `initState` to `didChangeDependencies`.

6DefaultTextStyle.of(context);

7IconTheme.of(context);

∙

Valid

example.dartdart

import 'package:flutter/material.dart';
class S extends State<StatefulWidget> { void didChangeDependencies() {
Theme.of(context);
MediaQuery.of(context);
Directionality.of(context);
DefaultTextStyle.of(context);
IconTheme.of(context);
}}

Configure avoid-inherited-widget-in-initstate

Set its severity in falcon.json. See the configuration guide.

falcon.jsonjson

{
  "linter": {
    "rules": {
      "correctness": {
        "avoid-inherited-widget-in-initstate": "error"
      }
    }
  }
}

Or silence one occurrence with a suppression comment; the reason is required.

example.dartdart

// falcon-ignore lint/correctness/avoid-inherited-widget-in-initstate: <reason>

avoid-instantiating-in-value-providerprovider
Value providers borrow existing instances; newly constructed values need create.
avoid-late-contextrecommendedflutter
Avoid storing BuildContext in late fields or reading it in late initializers.
avoid-missing-completer-stack-trace
Preserve error origins when calling SDK Completer.completeError.
avoid-missing-controllerflutter
Require Flutter text fields to expose their updated value.
avoid-missing-enum-constant-in-map
Require enum-keyed map literals to include every declared enum value.
avoid-missing-interpolationrecommended
Flags missing interpolation around visible String variables or member accesses and calls.
avoid-misused-hooksrecommendedflutter_hooks
Flags confirmed Flutter hooks called directly in non-hook Flutter widget builds.
avoid-mounted-in-setstateflutter
Check mounted before invoking Flutter State.setState, never inside its callback.