Errors in Delegate when using cs_CZ

[vladaman]

The app crashes with following error. I used string.cs_CZ.i18n.json file and also LocaleSettings.setLocaleRaw("cs_CZ");

I/flutter ( 5843): ════════
I/flutter ( 5843): Warning: This application's locale, cs_CZ, is not supported by all of its
I/flutter ( 5843): localization delegates.
I/flutter ( 5843): > A MaterialLocalizations delegate that supports the cs_CZ locale was not found.
I/flutter ( 5843): See https://flutter.dev/tutorials/internationalization/ for more
I/flutter ( 5843): information about configuring an app's locale, supportedLocales,
I/flutter ( 5843): and localizationsDelegates parameters.
I/flutter ( 5843): ════════
I/flutter ( 5843): 

======== Exception caught by widgets library =======================================================
The following assertion was thrown building AppBar(dirty, dependencies: [_LocalizationsScope-[GlobalKey#0dcea]], state: _AppBarState#471e0):
No MaterialLocalizations found.

AppBar widgets require MaterialLocalizations to be provided by a Localizations widget ancestor.
The material library uses Localizations to generate messages, labels, and abbreviations.

To introduce a MaterialLocalizations, either use a MaterialApp at the root of your application to include them automatically, or add a Localization widget with a MaterialLocalizations delegate.

The specific widget that could not find a MaterialLocalizations ancestor was: AppBar
  dirty
  dependencies: [_LocalizationsScope-[GlobalKey#0dcea]]
  state: _AppBarState#471e0
The ancestors of this widget were: 
  : Scaffold
    dependencies: [_InheritedTheme, MediaQuery, _EffectiveTickerMode, _LocalizationsScope-[GlobalKey#0dcea], Directionality, UnmanagedRestorationScope, _ScaffoldMessengerScope]
    state: ScaffoldState#1a26c(tickers: tracking 2 tickers)
  : MyHomePage
    dependencies: [MediaQuery]
    state: _MyHomePageState#24804
  : MaterialApp
    state: _MaterialAppState#c0250
  : MyApp
  : _InheritedLocaleData
  : TranslationProvider-[LabeledGlobalKey<_TranslationProviderState>#7e437]
    state: _TranslationProviderState#794d5
  ...
The relevant error-causing widget was: 

[Tienisto]

Hi,

it seems that I forgot to mention that you need flutter_localizations dependency in order to use the delegates.
I will add this to the README.

# pubspec.yaml
dependencies:
  flutter_localizations:
    sdk: flutter

import 'package:flutter_localizations/flutter_localizations.dart';

MaterialApp(
  localizationsDelegates: const [
    GlobalMaterialLocalizations.delegate,
    GlobalWidgetsLocalizations.delegate,
    GlobalCupertinoLocalizations.delegate,
  ],
  supportedLocales: LocaleSettings.supportedLocales,
)