flutter_bloc 4.0.0如何获取事件属性/参数

import 'package:flutter_bloc/flutter_bloc.dart';

// 自定义事件类
abstract class MyEvent extends Equatable {
  const MyEvent();

  @override
  List<Object> get props => [];
}

// 事件类示例，带有属性或参数
class SomeEvent extends MyEvent {
  final String property1;
  final int property2;

  const SomeEvent(this.property1, this.property2);

  @override
  List<Object> get props => [property1, property2];
}

import 'package:flutter_bloc/flutter_bloc.dart';

// 状态类
abstract class MyState extends Equatable {
  const MyState();

  @override
  List<Object> get props => [];
}

// BLoC类
class MyBloc extends Bloc<MyEvent, MyState> {
  MyBloc() : super();

  @override
  MyState get initialState => InitialState();

  @override
  Stream<MyState> mapEventToState(MyEvent event) async* {
    if (event is SomeEvent) {
      // 访问事件的属性或参数
      final property1 = event.property1;
      final property2 = event.property2;

      // 执行相应的逻辑

      yield UpdatedState(); // 返回新的状态
    }
  }
}