Flutter:失去与设备的连接(生产应用程序)

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Flutter Network Example'),
        ),
        body: Center(
          child: NetworkWidget(),
        ),
      ),
    );
  }
}

class NetworkWidget extends StatefulWidget {
  @override
  _NetworkWidgetState createState() => _NetworkWidgetState();
}

class _NetworkWidgetState extends State<NetworkWidget> {
  String _status = 'Checking connection...';

  @override
  void initState() {
    super.initState();
    checkConnection();
  }

  Future<void> checkConnection() async {
    try {
      var response = await http.get(Uri.parse('https://api.example.com/data'));
      if (response.statusCode == 200) {
        setState(() {
          _status = 'Connected!';
        });
      } else {
        setState(() {
          _status = 'Failed to load data';
        });
      }
    } catch (e) {
      setState(() {
        _status = 'Error: $e';
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Text(_status);
  }
}