Flutter音频录制插件flutter_sound_record_platform_interface的使用

flutter_sound_record_platform_interface 是一个用于 flutter_sound_record 插件的通用平台接口。该接口允许不同平台的具体实现和插件本身确保它们支持相同的接口。

使用

要为 flutter_sound_record 实现一个新的平台特定实现，可以扩展 FlutterSoundRecordPlatform 并实现执行平台特定行为的方法。当你注册你的插件时，可以通过调用 FlutterSoundRecordPlatform.instance = MyFlutterSoundRecordPlatform() 来设置默认的 FlutterSoundRecordPlatform。

示例代码

以下是一个简单的示例代码，展示了如何使用 flutter_sound_record_platform_interface 来实现音频录制功能。

import 'package:flutter/material.dart';
import 'package:flutter_sound/flutter_sound.dart';
import 'package:permission_handler/permission_handler.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 recorder = FlutterSoundRecorder();
  bool isRecording = false;

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

  Future<void> initRecorder() async {
    await Permission.microphone.request();
    await recorder.openRecorder();
  }

  Future<void> startRecording() async {
    if (!isRecording) {
      await recorder.startRecorder(toFile: 'audio_recording');
      setState(() {
        isRecording = true;
      });
    }
  }

  Future<void> stopRecording() async {
    if (isRecording) {
      await recorder.stopRecorder();
      setState(() {
        isRecording = false;
      });
    }
  }

  [@override](/user/override)
  void dispose() {
    recorder.closeRecorder();
    super.dispose();
  }

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

代码说明

• 导入必要的包：

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

• 初始化应用：

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

• 创建主页面：

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

• 定义录音页面状态类：

  class _AudioRecorderPageState extends State<AudioRecorderPage> {
    final recorder = FlutterSoundRecorder();
    bool isRecording = false;
  
    [@override](/user/override)
    void initState() {
      super.initState();
      initRecorder();
    }
  

• 初始化录音器：

  Future<void> initRecorder() async {
    await Permission.microphone.request();
    await recorder.openRecorder();
  }
  

• 开始录音：

  Future<void> startRecording() async {
    if (!isRecording) {
      await recorder.startRecorder(toFile: 'audio_recording');
      setState(() {
        isRecording = true;
      });
    }
  }
  

• 停止录音：

  Future<void> stopRecording() async {
    if (isRecording) {
      await recorder.stopRecorder();
      setState(() {
        isRecording = false;
      });
    }
  }
  

• 释放资源：

  [@override](/user/override)
  void dispose() {
    recorder.closeRecorder();
    super.dispose();
  }
  

• 构建UI：

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