IDE with flutter plugin alleges dependency to be non-existent

[Hu1buerger]

import 'package:flutter_gen/gen_l10n/app_localizations.dart'; // Android studio alleges this to be non existent
import 'package:flutter_localizations/flutter_localizations.dart';

class App extends StatelessWidget{
  
   [....]

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      restorationScopeId: 'app',

      localizationsDelegates: const [
        AppLocalizations.delegate, // the usage of the import
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        GlobalCupertinoLocalizations.delegate,
      ],
      supportedLocales: const [
        Locale('en', ''), // English, no country code
      ],

      onGenerateTitle: (BuildContext context) => AppLocalizations.of(context)!.appTitle,
      theme: ThemeData.dark(),

     [...]

    );
  }
}

TL;DR: Android studio / IntelliJ believes an import import 'package:flutter_gen/gen_l10n/app_localizations.dart'; to be non-existent. The dart analysis window also shows the error.
But $flutter analyse disagrees and flutter run also disagrees and starts compiling and executing the code without issue.

For more info head over to flutter/flutter#91756

[stevemessick]

According to the Flutter localizations docs you need to run the app to get code generation to execute. After running the app the analysis error disappears.

[Hu1buerger]

Shouldn't the error message reflect that? @stevemessick

[stevemessick]

Perhaps -- it seems like a good idea. You might want to check with the team that generates the error message. I think it is the Dart SDK (analyzer).

[Hu1buerger]

@stevemessick I am quite sure this is a bug within the IDE plugin. The reason that leads me to believe that is that flutter analyse dosnt report this error yet the IDE calls this an error. @stevemessick

This discrepancy is what confuses me

[Hu1buerger]

@stevemessick
Running flutter run or running from Android Studio or from IntelliJ dosnt remove the error from being displayed.

[Sushma-Shrestha]

Problem while self-learning:

for this code, in official site of flutter:
https://gallery.flutter.dev/#/demo/app-bar

there is,
import 'package:flutter_gen/gen_l10n/gallery_localizations.dart';

for this i have tried installing package flutter_gen, flutter_intl, localization.
upgrade, clean, run.
Also, saved the l10n.yaml file in lib.

However, it stilll shows error, may be because i am starter and messed up,
Can someone tell me which package has to be installed exactly and process? PLEASE!

I am self-learning and don't know what to do!!

Thankyou for viewing my comment!

[Quantme]

Problem while self-learning:

for this code, in official site of flutter: https://gallery.flutter.dev/#/demo/app-bar

there is, import 'package:flutter_gen/gen_l10n/gallery_localizations.dart';

for this i have tried installing package flutter_gen, flutter_intl, localization. upgrade, clean, run. Also, saved the l10n.yaml file in lib.

However, it stilll shows error, may be because i am starter and messed up, Can someone tell me which package has to be installed exactly and process? PLEASE!

I am self-learning and don't know what to do!!

Thankyou for viewing my comment!

@Sushma-Shrestha, I did what @stevemessick commented about the Flutter localization docs (specially after step 5) and worked; you need to run the project in order to generate the files mentioned in step 6 (if your IDE asks/warns about errors run it anyway).

[CanhMv]

I just tried flutter gen-l10n then it worked