使用Dio/bloc颤动处理错误

dependencies:
  dio: ^4.0.0
  flutter_bloc: ^7.0.0

import 'package:dio/dio.dart';

class MyRepository {
  final Dio _dio = Dio();

  Future<String> fetchData() async {
    try {
      final response = await _dio.get('https://api.example.com/data');
      return response.data.toString();
    } catch (e) {
      throw Exception('Failed to fetch data');
    }
  }
}

import 'package:flutter_bloc/flutter_bloc.dart';

class MyBloc extends Cubit<String> with ErrorHandlingBlocMixin {
  final MyRepository _repository = MyRepository();

  MyBloc() : super('');

  Future<void> fetchData() async {
    try {
      emit(await _repository.fetchData());
    } catch (e) {
      handleBlocError(e);
    }
  }
}

import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class MyPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('My Page'),
      ),
      body: BlocBuilder<MyBloc, String>(
        builder: (context, state) {
          if (state.isEmpty) {
            return Center(
              child: CircularProgressIndicator(),
            );
          } else if (state.startsWith('Failed')) {
            return Center(
              child: Text('Failed to fetch data'),
            );
          } else {
            return Center(
              child: Text(state),
            );
          }
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          context.read<MyBloc>().fetchData();
        },
        child: Icon(Icons.refresh),
      ),
    );
  }
}