Riverpod_flutter_tuts/lib/widgets/notifier/counter.dart

import 'package:riverpod_annotation/riverpod_annotation.dart';


part 'counter.g.dart';

@riverpod
class CounterNotifier extends _$CounterNotifier {

  int x = 0;
  @override
  Future<int> build()  async{
    return x;
  }

  void plus() {
    x++;
    ref.invalidateSelf();
    // state = AsyncData(x);
  }

  void minus() {
    x--;
    // ref.invalidateSelf();
    state = AsyncData(x);
  }
}