导致错误的小部件是: FutureBuilder:file:///home/chayut/flutter-quiz-app/lib/widgets/image/image_container.dart:更新:这是完整的错误日志。我不知道是什么导致了这个错误。═════════════════════════════════════════════════
The following FormatException was thrown building
在Dart中,我想使用onGenerateRoute将数据从'/city‘发送到'/card’。 class RoutGenerator { final args = settings.arguments;
case '/':
return MaterialPageRoute(builder: (context) =>
.then((value) => print(value)); future: citiesProvider.getCities(),═══════════════════════════════════════════════
The following NoSuchMethodError was thrown building FutureBuilderString>>(Closure: (dynamic) => DropdownMenuItem<String&