Flutter音频录制插件fepe_record_mp3的使用

Flutter音频录制插件fepe_record_mp3的使用

使用平台原生API录制MP3文件

依赖安装

添加到你的 pubspec.yaml 文件：

dependencies:
  fepe_record_mp3: ^1.0.1

iOS权限配置

确保在Info.plist中添加以下键：

<key>NSMicrophoneUsageDescription</key>
<string>请允许访问麦克风以便录制音频</string>

示例代码

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:fepe_record_mp3/record_mp3.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

  [@override](/user/override)
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  [@override](/user/override)
  void initState() {
    super.initState();
    RecordMp3.instance.initRecording("");
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              '你已经点击了按钮多少次：',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: '增加',
        child: const Icon(Icons.add),
      ),
    );
  }
}

录制功能实现

在 _MyHomePageState 类中，我们可以实现录音功能。首先，在 initState 方法中初始化录音器，并且在需要的地方调用相应的录音方法。

[@override](/user/override)
void initState() {
  super.initState();
  RecordMp3.instance.initRecording("");
}

// 开始录音
void startRecording(String filePath) {
  RecordMp3.instance.start(filePath, (type) {
    // 录音失败回调
    print("录音失败");
  });
}

// 暂停录音
void pauseRecording() {
  RecordMp3.instance.pause();
}

// 恢复录音
void resumeRecording() {
  RecordMp3.instance.resume();
}

// 停止录音并导出文件
void stopRecording() {
  RecordMp3.instance.stop();
}

使用示例

在 _MyHomePageState 中添加一些按钮来触发这些录音操作：

[@override](/user/override)
Widget build(BuildContext context) {
  return Scaffold(
    appBar: AppBar(
      title: Text(widget.title),
    ),
    body: Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        children: <Widget>[
          const Text(
            '你已经点击了按钮多少次：',
          ),
          Text(
            '$_counter',
            style: Theme.of(context).textTheme.headline4,
          ),
          ElevatedButton(
            onPressed: () {
              startRecording("/path/to/your/recording.mp3");
            },
            child: Text("开始录音"),
          ),
          ElevatedButton(
            onPressed: () {
              pauseRecording();
            },
            child: Text("暂停录音"),
          ),
          ElevatedButton(
            onPressed: () {
              resumeRecording();
            },
            child: Text("恢复录音"),
          ),
          ElevatedButton(
            onPressed: () {
              stopRecording();
            },
            child: Text("停止录音"),
          ),
        ],
      ),
    ),
    floatingActionButton: FloatingActionButton(
      onPressed: _incrementCounter,
      tooltip: '增加',
      child: const Icon(Icons.add),
    ),
  );
}