Null check operator used on a null value

[divineaseaku]

Setup easy_localization: 3.0.1 as in example on package but got error Null check operator used on a null value upon running the app.

My IDE points the error to line 48 EasyLocalization.of(this)!.delegates; on on file easy_localization/src/public_ext.dart.

[alireza-rajaei]

i have the same issue inside testWidgets

          debugShowCheckedModeBanner: false,
          localizationsDelegates: context.localizationDelegates,
          supportedLocales: context.supportedLocales,

The following _CastError was thrown building Builder(dirty):
Null check operator used on a null value

[khayargoli]

Same with me

[Syed95github]

localizationsDelegates: context.localizationDelegates,
this is causing the error.
Any one solved this ?

[DirtyNative]

Same problem here. Did anyone find a solution?

[Mar1anne]

Same here. Any updates?

[mohkoma]

This is mostly because the parent widget still not fully initialized, Which means the context still doesn't have localizationDelegates or supportedLocales.
The easy way to solve this is to wrap your MaterialApp, CupertinoApp or WidgetsApp inside a builder.
Something like this:

EasyLocalization(
      supportedLocales: [Locale('en', 'US'), Locale('de', 'DE')],
      path: 'assets/translations',
      fallbackLocale: Locale('en', 'US'),
      child: builder(
          builder: (context) {
               return MaterialApp(
                  localizationsDelegates: context.localizationDelegates,
                  supportedLocales: context.supportedLocales,
                  locale: context.locale,
                  home: MyHomePage()
               )
          }
      )
 ),

[Mar1anne]

@mohkoma I had the same implementation as you mentioned.

If I have the following setup:
Project A -> app with easy localization
Project B -> app with a dependency of Project A.
I always get the same error in Project B.

[mohkoma]

@Mar1anne It's hard for me to find the issue without seeing the code, but I assume that the Project B still doesn't have the context that has a loaded easy localisation. Therefore, try to wrap the Project B inside another builder also?

[Mar1anne]

@mohkoma Maybe, I guess that should work. I changed my implementation since then, but I'll test this out as soon as I got the time. Thanks!

[bw-flagship]

Several people seem to have this issue, could someone post a sample to reproduce? I don't think we have a bug here, but maybe something the docs should cover.

[SwiftSpotter]

@mohkoma ur solution fixed it for me thanks.

[bw-flagship]

Closing since the solution seems to work. Thanks @mohkoma