microphone 0.0.2+3

Plugin (web-only at this time) for recording audio through the microphone. This is an audio recorder plugin.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:just_audio/just_audio.dart';
import 'package:microphone/microphone.dart';

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

/// Example app demonstrating how to use the `microphone` plugin and with that
/// a [MicrophoneRecorder].
///
/// The example app listens to realtime updates of the recording and based on
/// that provides functionality to start, stop, and listen to a recording.
class MicrophoneExampleApp extends StatefulWidget {
  /// Constructs [MicrophoneExampleApp].
  const MicrophoneExampleApp({Key key}) : super(key: key);

  @override
  _MicrophoneExampleAppState createState() => _MicrophoneExampleAppState();
}

class _MicrophoneExampleAppState extends State<MicrophoneExampleApp> {
  MicrophoneRecorder _recorder;
  AudioPlayer _audioPlayer;

  @override
  void initState() {
    super.initState();

    _initRecorder();
  }

  @override
  void dispose() {
    _recorder.dispose();
    _audioPlayer?.dispose();

    super.dispose();
  }

  void _initRecorder() {
    // Dispose the previous recorder.
    _recorder?.dispose();

    _recorder = MicrophoneRecorder()
      ..init()
      ..addListener(() {
        setState(() {});
      });
  }

  @override
  Widget build(BuildContext context) {
    final value = _recorder.value;
    Widget result;

    if (value.started) {
      if (value.stopped) {
        result = Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            OutlineButton(
              onPressed: () {
                setState(_initRecorder);
              },
              child: Text('Restart recorder'),
            ),
            Padding(
              padding: const EdgeInsets.only(
                top: 16,
              ),
              child: OutlineButton(
                onPressed: () async {
                  _audioPlayer?.dispose();

                  _audioPlayer = AudioPlayer();
                  await _audioPlayer.setUrl(value.recording.url);
                  await _audioPlayer.play();
                },
                child: Text('Play recording'),
              ),
            ),
          ],
        );
      } else {
        result = OutlineButton(
          onPressed: () {
            _recorder.stop();
          },
          child: Text('Stop recording'),
        );
      }
    } else {
      result = OutlineButton(
        onPressed: () {
          _recorder.start();
        },
        child: Text('Start recording'),
      );
    }

    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: result,
        ),
      ),
    );
  }
}