Flutter耳机监听插件flutter_headset_listener的使用

Flutter耳机监听插件flutter_headset_listener的使用

flutter_headset_listener 是一个用于在 Flutter 应用程序中监听耳机状态的插件。该插件可以检测到蓝牙耳机的连接与断开事件以及有线耳机的插入与拔出事件。

使用步骤

1. 添加依赖 在你的 pubspec.yaml 文件中添加 flutter_headset_listener 依赖：

   dependencies:
     flutter:
       sdk: flutter
     flutter_headset_listener: ^版本号
   

   请将 ^版本号 替换为你需要的插件版本号。

2. 初始化插件 在应用程序中初始化插件并设置监听器。

示例代码

以下是一个完整的示例代码，展示了如何使用 flutter_headset_listener 插件来监听耳机状态变化。

import 'package:flutter/material.dart';
import 'package:flutter_headset_listener/flutter_headset_listener.dart';
import 'package:flutter_headset_listener/headset_state.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return const MaterialApp(
      home: HomeApp(),
    );
  }
}

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

  @override
  State<HomeApp> createState() => _HomeAppState();
}

class _HomeAppState extends State<HomeApp> {
  bool btHeadsetIsConnect = false;
  bool headsetIsConnect = false;

  // 创建一个 FlutterHeadsetListener 实例
  var flutterHeadsetListener = FlutterHeadsetListener();

  // 初始化方法
  void init() async {
    // 请求权限
    await flutterHeadsetListener.requestPermission();

    // 检测蓝牙耳机是否已连接
    btHeadsetIsConnect = await flutterHeadsetListener.getBTHeadsetIsConnected();

    // 设置耳机状态流监听器
    flutterHeadsetListener.headsetStateStream.listen((event) {
      debugPrint(event.toString());
      if (event == HeadsetState.btConnected) {
        setState(() {
          btHeadsetIsConnect = true;
        });
      }

      if (event == HeadsetState.btDisconnected) {
        setState(() {
          btHeadsetIsConnect = false;
        });
      }

      if (event == HeadsetState.plugged) {
        setState(() {
          headsetIsConnect = true;
        });
      }

      if (event == HeadsetState.unPlugged) {
        setState(() {
          headsetIsConnect = false;
        });
      }
    });
    setState(() {});
  }

  @override
  void initState() {
    init(); // 调用初始化方法
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            Text("BTHeadsetConnect: $btHeadsetIsConnect"),
            Text("headsetIsConnect: $headsetIsConnect"),
          ],
        ),
      ),
    );
  }
}

代码解释

1. 导入必要的包：

   import 'package:flutter/material.dart';
   import 'package:flutter_headset_listener/flutter_headset_listener.dart';
   import 'package:flutter_headset_listener/headset_state.dart';
   

2. 创建主应用类 MyApp：

   class MyApp extends StatelessWidget {
     const MyApp({super.key});
   
     @override
     Widget build(BuildContext context) {
       return const MaterialApp(
         home: HomeApp(),
       );
     }
   }
   

3. 创建状态管理类 _HomeAppState：

   class _HomeAppState extends State<HomeApp> {
     bool btHeadsetIsConnect = false;
     bool headsetIsConnect = false;
   
     var flutterHeadsetListener = FlutterHeadsetListener();
   
     void init() async {
       await flutterHeadsetListener.requestPermission();
       btHeadsetIsConnect = await flutterHeadsetListener.getBTHeadsetIsConnected();
       flutterHeadsetListener.headsetStateStream.listen((event) {
         debugPrint(event.toString());
         if (event == HeadsetState.btConnected) {
           setState(() {
             btHeadsetIsConnect = true;
           });
         }
         if (event == HeadsetState.btDisconnected) {
           setState(() {
             btHeadsetIsConnect = false;
           });
         }
         if (event == HeadsetState.plugged) {
           setState(() {
             headsetIsConnect = true;
           });
         }
         if (event == HeadsetState.unPlugged) {
           setState(() {
             headsetIsConnect = false;
           });
         }
       });
       setState(() {});
     }
   
     @override
     void initState() {
       init();
       super.initState();
     }
   
     @override
     Widget build(BuildContext context) {
       return Scaffold(
         body: Center(
           child: Column(
             mainAxisSize: MainAxisSize.min,
             children: [
               Text("BTHeadsetConnect: $btHeadsetIsConnect"),
               Text("headsetIsConnect: $headsetIsConnect"),
             ],
           ),
         ),
       );
     }
   }