provider localization for cupertino. just en and zh, because others is not finished yet. and there is no plan to do it, because I can't those languages.
You can use it to fixed the error:
The getter 'pasteButtonLabel' was called on null.
if you wan't use
MaterialApp( locale: Locale('zh', 'CH'), localizationsDelegates: [ GlobalCupertinoLocalizations.delegate, GlobalMaterialLocalizations.delegate, GlobalWidgetsLocalizations.delegate, ], supportedLocales: [ const Locale('zh', 'CH'), const Locale('en', 'US'), ], ... }
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