Flutter掌声检测插件detect_clap_sound_flutter的使用

Flutter掌声检测插件detect_clap_sound_flutter的使用

检测声音基于振幅参数

设置权限和其他

Android

<uses-permission android:name="android.permission.RECORD_AUDIO" />

• 最低SDK版本: 21

可以调整参数来检测不同类型的声音

DetectConfig

使用方法

需要在要使用的Dart文件中导入包

import 'package:detect_clap_sound_flutter/detect_clap_sound_flutter.dart';

检查麦克风（录音）权限

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

final status = await detectClapSoundFlutterPlugin.hasPermission();

请求权限

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

final status = await detectClapSoundFlutterPlugin.requestPermission();

检查音频录制是否正在进行

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

final isRecording = await detectClapSoundFlutterPlugin.isRecording();

开始录制

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

/// 你可以设置文件名或路径。
/// 或更改音频检测配置参数。
detectClapSoundFlutterPlugin.startRecording();

监听录制并检测声音

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

detectClapSoundFlutterPlugin.onListenDetectSound().listen(
      (int times) {
        // TODO 做一些事情。
      },
    );

停止录制

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

final path = await detectClapSoundFlutterPlugin.stopRecording();

作为始终不要忘记这一条

final DetectClapSoundFlutter detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

detectClapSoundFlutterPlugin.dispose(); 

完整示例

import 'dart:developer';

import 'package:detect_clap_sound_flutter/detect_clap_sound_flutter.dart';
import 'package:detect_clap_sound_flutter_example/widget/example_button.dart';
import 'package:flutter/material.dart';
import 'dart:async';

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

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

  [@override](/user/override)
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  /// 定义 [_detectClapSoundFlutterPlugin] 来使用插件。
  final DetectClapSoundFlutter _detectClapSoundFlutterPlugin = DetectClapSoundFlutter();

  /// 定义 [_hasPermission] 来获取权限状态。
  bool _hasPermission = false;

  /// 定义 [_isRecording] 来设置录制状态。
  bool _isRecording = false;

  /// 定义 [_clapSubscription] 来设置订阅和监听。
  StreamSubscription<int>? _clapSubscription;

  /// 定义 [_clapTimes] 来计数掌声次数。
  int _clapTimes = 0;

  [@override](/user/override)
  void initState() {
    super.initState();

    _getStatusRecordPermission();

    _listenDetectSound();
  }

  [@override](/user/override)
  void dispose() {
    _clapSubscription?.cancel();
    _detectClapSoundFlutterPlugin.dispose();
    super.dispose();
  }

  /// [_listenDetectSound] 来监听录制并检测声音。
  void _listenDetectSound() {
    _clapSubscription = _detectClapSoundFlutterPlugin.onListenDetectSound().listen(
      (int times) {
        log('TechMind 正在监听检测到的声音 $times');

        _clapTimes = _clapTimes + times;

        setState(() {});
      },
    );
  }

  /// [_getStatusRecordPermission] 来获取录制权限状态。
  Future<void> _getStatusRecordPermission() async {
    _hasPermission = await _detectClapSoundFlutterPlugin.hasPermission() ?? false;

    _isRecording = await _detectClapSoundFlutterPlugin.isRecording() ?? false;

    setState(() {});
  }

  /// [_requestPermissions] 来请求录制权限。
  Future<void> _requestPermissions() async {
    final status = await _detectClapSoundFlutterPlugin.requestPermission();

    _hasPermission = status ?? false;
    setState(() {});
  }

  /// [_startRecording] 来开始录制。
  void _startRecording() {
    _detectClapSoundFlutterPlugin.startRecording();

    _isRecording = true;
    setState(() {});
  }

  /// [_stopRecording] 来停止录制。
  Future<void> _stopRecording() async {
    final String? path = await _detectClapSoundFlutterPlugin.stopRecording();

    log('TechMind: 录制音频文件路径: $path');

    _isRecording = false;
    setState(() {});
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        backgroundColor: _checkEvenTimes() ? Colors.white : Colors.black,
        appBar: AppBar(
          backgroundColor: Colors.blue,
          centerTitle: true,
          title: const Text(
            '掌声检测',
            style: TextStyle(
              fontSize: 30,
              color: Colors.white,
              fontWeight: FontWeight.bold,
            ),
          ),
        ),
        body: SizedBox(
          width: MediaQuery.of(context).size.width,
          height: MediaQuery.of(context).size.height,
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Padding(
                padding: EdgeInsets.only(bottom: MediaQuery.of(context).size.width * .3),
                child: Text(
                  '次数: $_clapTimes',
                  style: TextStyle(
                    fontSize: 30,
                    color: _checkEvenTimes() ? Colors.black : Colors.white,
                    fontWeight: FontWeight.bold,
                  ),
                  textAlign: TextAlign.center,
                ),
              ),
              ExampleButton(
                colorBG: !_hasPermission ? Colors.red : Colors.blue,
                onTap: () {
                  _requestPermissions();
                },
                label: '已授予录制权限: $_hasPermission',
              ),
              ExampleButton(
                colorBG: _isRecording ? Colors.red : Colors.blue,
                onTap: () {
                  if (_isRecording) {
                    _stopRecording();
                  } else {
                    _startRecording();
                  }
                },
                label: _isRecording ? '停止录制' : '开始录制',
              ),
            ],
          ),
        ),
      ),
    );
  }

  /// [_checkEvenTimes] 来检查次数是否为偶数。
  /// 如果是偶数则显示打开灯或关闭灯。
  bool _checkEvenTimes() {
    return _clapTimes % 2 == 0;
  }
}