Flutter开发一个Wifi信号测量应用

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:wifi_info_flutter/wifi_info_flutter.dart';
 
void main() => runApp(MyApp());
 
class MyApp extends StatelessWidget {
  // 此处省略其他代码...
 
  // 获取WiFi信号强度
  Future<void> getWifiInfo() async {
    int info = await methodChannel.invokeMethod('getWifiInfo');
    setState(() {
      wifiInfo = info;
    });
  }
 
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('WiFi信号测量'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              Text(
                'WiFi信号强度:',
                style: TextStyle(fontSize: 20),
              ),
              SizedBox(height: 10),
              Text(
                '$wifiInfo dBm',
                style: TextStyle(fontSize: 20),
              ),
              SizedBox(height: 20),
              RaisedButton(
                child: Text('获取WiFi信号强度'),
                onPressed: getWifiInfo,
              ),
            ],
          ),
        ),
      ),
    );
  }
}

这段代码示例展示了如何在Flutter应用中获取和显示WiFi信号强度。它使用了wifi_info_flutter插件，并通过MethodChannel与原生代码进行交互。用户点击按钮时，会触发获取WiFi信号强度的方法，并更新UI显示最新的信号强度。