Flutter音频录制插件flutter_sound_record_web的使用

Flutter音频录制插件flutter_sound_record_web的使用

flutter_sound_record_web 是 flutter_sound_record 包的 Web 实现。它允许你在基于 Web 的 Flutter 应用程序中进行音频录制。

使用步骤

首先，确保你已经在项目中添加了 flutter_sound 和 flutter_sound_web 依赖项。在你的 pubspec.yaml 文件中添加以下依赖：

dependencies:
  flutter:
    sdk: flutter
  flutter_sound: ^8.0.0  # 请根据最新版本更新此行
  flutter_sound_web: ^8.0.0  # 请根据最新版本更新此行

然后运行 flutter pub get 来获取这些依赖项。

完整示例代码

以下是一个完整的示例代码，展示了如何在 Flutter Web 应用程序中使用 flutter_sound_record_web 插件来录制音频。

import 'package:flutter/material.dart';
import 'package:flutter_sound/flutter_sound.dart';
import 'package:flutter_sound_web/flutter_sound_web.dart';

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

class MyApp extends StatelessWidget {
  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: AudioRecorderPage(),
    );
  }
}

class AudioRecorderPage extends StatefulWidget {
  [@override](/user/override)
  _AudioRecorderPageState createState() => _AudioRecorderPageState();
}

class _AudioRecorderPageState extends State<AudioRecorderPage> {
  final FlutterSoundRecorder _audioRecorder = FlutterSoundRecorder();
  bool _isRecording = false;
  String _recordFilePath;

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

  Future<void> openAudioSession() async {
    await _audioRecorder.openAudioSession();
  }

  void startRecording() async {
    if (!_isRecording) {
      setState(() {
        _isRecording = true;
      });
      await _audioRecorder.startRecorder(toFile: 'example');
      _recordFilePath = 'example.aac';  // 录制文件路径
      print('开始录音...');
    }
  }

  void stopRecording() async {
    if (_isRecording) {
      setState(() {
        _isRecording = false;
      });
      final path = await _audioRecorder.stopRecorder();
      print('录音已停止，文件保存在 $path');
    }
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('音频录制示例'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            ElevatedButton(
              onPressed: _isRecording ? stopRecording : startRecording,
              child: Text(_isRecording ? '停止录音' : '开始录音'),
            ),
            SizedBox(height: 20),
            Text(_isRecording ? '正在录音...' : ''),
            Text(_recordFilePath ?? ''),
          ],
        ),
      ),
    );
  }

  [@override](/user/override)
  void dispose() {
    _audioRecorder.closeAudioSession();
    super.dispose();
  }
}

更多关于Flutter音频录制插件flutter_sound_record_web的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html

1 回复

更多关于Flutter音频录制插件flutter_sound_record_web的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html


flutter_sound_record_web 是一个用于在 Flutter Web 应用中录制音频的插件。它是 flutter_sound 插件的一部分，专门用于 Web 平台。以下是如何使用 flutter_sound_record_web 插件进行音频录制的详细步骤。

1. 添加依赖

首先，在 pubspec.yaml 文件中添加 flutter_sound 和 flutter_sound_record_web 的依赖：

dependencies:
  flutter:
    sdk: flutter
  flutter_sound: ^x.x.x  # 请使用最新版本
  flutter_sound_record_web: ^x.x.x  # 请使用最新版本

然后运行 flutter pub get 来获取依赖。

2. 初始化插件

在你的 Dart 文件中，导入 flutter_sound 和 flutter_sound_record_web，并初始化插件。

import 'package:flutter_sound/flutter_sound.dart';
import 'package:flutter_sound_record_web/flutter_sound_record_web.dart';

class AudioRecorder {
  FlutterSoundRecorder? _recorder;

  Future<void> init() async {
    _recorder = FlutterSoundRecorder();
    await _recorder!.openAudioSession();
  }
}

3. 开始录制

使用 startRecorder 方法开始录制音频。你可以指定音频的文件路径和编码格式。

Future<void> startRecording() async {
  if (_recorder != null) {
    await _recorder!.startRecorder(
      toFile: 'audio_record.wav',
      codec: Codec.pcm16WAV,
    );
  }
}

4. 停止录制

使用 stopRecorder 方法停止录制音频。

Future<void> stopRecording() async {
  if (_recorder != null) {
    await _recorder!.stopRecorder();
  }
}

5. 释放资源

在应用退出或不再需要录制时，释放音频会话资源。

Future<void> dispose() async {
  if (_recorder != null) {
    await _recorder!.closeAudioSession();
    _recorder = null;
  }
}

6. 完整示例

以下是一个完整的示例，展示了如何初始化、开始录制、停止录制和释放资源。

import 'package:flutter/material.dart';
import 'package:flutter_sound/flutter_sound.dart';
import 'package:flutter_sound_record_web/flutter_sound_record_web.dart';

class AudioRecorder extends StatefulWidget {
  [@override](/user/override)
  _AudioRecorderState createState() => _AudioRecorderState();
}

class _AudioRecorderState extends State<AudioRecorder> {
  FlutterSoundRecorder? _recorder;
  bool _isRecording = false;

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

  Future<void> initRecorder() async {
    _recorder = FlutterSoundRecorder();
    await _recorder!.openAudioSession();
  }

  Future<void> startRecording() async {
    if (_recorder != null) {
      await _recorder!.startRecorder(
        toFile: 'audio_record.wav',
        codec: Codec.pcm16WAV,
      );
      setState(() {
        _isRecording = true;
      });
    }
  }

  Future<void> stopRecording() async {
    if (_recorder != null) {
      await _recorder!.stopRecorder();
      setState(() {
        _isRecording = false;
      });
    }
  }

  [@override](/user/override)
  void dispose() {
    if (_recorder != null) {
      _recorder!.closeAudioSession();
      _recorder = null;
    }
    super.dispose();
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Audio Recorder'),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            _isRecording
                ? Text('Recording...')
                : Text('Press the button to start recording'),
            SizedBox(height: 20),
            ElevatedButton(
              onPressed: _isRecording ? stopRecording : startRecording,
              child: Text(_isRecording ? 'Stop Recording' : 'Start Recording'),
            ),
          ],
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(
    home: AudioRecorder(),
  ));
}
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