Playing around with Bloc in Flutter. In Bloc event I faced a problem regarding Equatable. At first, I cannot import equetable package: import 'package:equatable/equatable.dart'; The error says: "The part-of directive must be the only directive in a part. Try removing other directives, or moving them to the library for which this is a part".

Later on when I create the Event and extends Equatable, the error says: "Classes can only extend other classes. Try specifying a different superclass, or removing the extends clause".

(FYI: I put into the pubspec.yaml the equatable dependency).

I will appreciate your assistance, as always!

CodePudding user response：

The part-of directive must be the only directive in a part. Try removing other directives, or moving them to the library for which this is a part.

That error message means you can't import any package from bloc_event.dart because bloc_event.dart is part of bloc_bloc.dart. Try to import the equatable package in bloc_bloc.dart. And don't forget to flutter pub get.

import 'package:equatable/equatable.dart';

part 'bloc_event.dart';

class BlocBloc ...

CodePudding user response：

It's returning an error because bloc_event.dart is part of bloc_bloc.dart.

Try to:

1. import the equatable package in bloc_bloc.dart
2. import your state class,
3. remove all the part imports
4. import them normally without the part.

   import 'package:equatable/equatable.dart';
   class BlocBloc...