通过使用这个Connectivity Plugin,我可以使用以下代码获取连接状态,即移动网络、wifi或无连接状态:
import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:connectivity/connectivity.dart';
void main() {
runApp(new MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
String _connectionStatus = 'Unknown';
final Connectivity _connectivity = new Connectivity();
StreamSubscription<ConnectivityResult> _connectivitySubscription;
@override
void initState() {
super.initState();
initConnectivity();
_connectivitySubscription =
_connectivity.onConnectivityChanged.listen((ConnectivityResult result) {
setState(() => _connectionStatus = result.toString());
});
}
@override
void dispose() {
_connectivitySubscription.cancel();
super.dispose();
}
Future<Null> initConnectivity() async {
String connectionStatus;
try {
connectionStatus = (await _connectivity.checkConnectivity()).toString();
} on PlatformException catch (e) {
print(e.toString());
connectionStatus = 'Failed to get connectivity.';
}
if (!mounted) {
return;
}
setState(() {
_connectionStatus = connectionStatus;
});
}
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: const Text('Plugin example app'),
),
body: new Center(
child: new Text('Connection Status: $_connectionStatus\n')),
);
}
}
现在我的要求是当手机连接到Wifi时,获取Wifi的名称。详细描述:假设用户已经将他/她的手机连接到名为“家庭Wifi”的wifi上,从我编写的代码中,我只能得到手机是否连接到了Wifi的信息,我还希望获取手机连接到的Wifi的名称,例如“家庭Wifi”。
git: url: git@github.com:flutter/plugins.git
和path: packages/connectivity
。 - FeuPlatformException(UNAVAILABLE, wifi name unavailable, null)
。是权限问题吗? - Rob C