检测网络

Flutter 检测网络

  https://pub.dev/packages/connectivity

 

案例代码

 

import 'package:flutter/material.dart';

import 'package:connectivity/connectivity.dart';

class CameraPage extends StatefulWidget{
  CameraPage({Key key});
  _CameraPage createState() => _CameraPage();
}

class _CameraPage extends State {

  var subscription ;
  var whatNetwork = '未检测网络';
  initState() {
    super.initState();
    getNetwork();
  }
  dispose() {
    super.dispose();

    subscription .cancel();
  }
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return Scaffold(
        appBar: AppBar(
            title: Text('设备硬件')
        ),
        body: ListView(
          children: <Widget>[
            Text('${whatNetwork}'),
          ]
        )
    );
  }

  // 网络监测
  getNetwork() async{
    subscription = await (Connectivity().checkConnectivity());
      // Got a new connectivity status!
      switch(subscription) {
        case ConnectivityResult.mobile:
          setState(() {whatNetwork = '手机网络';});
          break;
        case ConnectivityResult.wifi:
          setState(() {whatNetwork = '网络WIFI';});
          break;
        default:
          setState(() {whatNetwork = '无网络';});
      }
  }
}