Flutter桌面软件开发如何监听网络变化

发布于 1 年前 作者 phonegap100 254 次浏览 最后一次编辑是 1 年前 来自 分享

Flutter桌面软件开发如何监听网络变化呢?其实在Flutter中可以使用connectivity_plus监听网络变化

地址: https://pub.dev/packages/connectivity_plus

1、安装依赖

dependencies:
  connectivity_plus: ^2.3.6+1

2、使用connectivity_plus监听Flutter桌面软件网络变化

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

class NetworkPage extends StatefulWidget {
  const NetworkPage({super.key});

  @override
  State<NetworkPage> createState() => _NetworkPageState();
}

class _NetworkPageState extends State<NetworkPage> { 
  dynamic subscription;
  String _stateText = "检测中...";
  @override
  void initState() {
    super.initState();
    subscription = Connectivity()
        .onConnectivityChanged
        .listen((ConnectivityResult result) {
      if (result == ConnectivityResult.wifi) {
        setState(() {
          _stateText = "已连接 wifi";
        });
      } else if (result == ConnectivityResult.mobile) {
        setState(() {
          _stateText = "处于手机网络";
        });
      } else {
        setState(() {
          _stateText = "没有网络";
        });
      }
    });
  }

  @override
  void dispose() {
    // TODO: implement dispose
    super.dispose();
    subscription.cancel();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('检测网络'),
      ),
      body: Center(
        child: Text(_stateText),
      ),
    );
  }
}

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