社团网站开发模板,驻马店网站建设天祥,公司网站内容编辑,室内设计需要什么学历flutter_sound_record 前言文章案例所使用插件的版本号插件安装引入安卓和ios权限支持的编码自定义生成的文件名代码main.dartaudio_player.dart 源码地址 前言
使用flutter_sound,总是出现莫名的错误,所以改为flutter_sound_record,实现录音录制和播放
文章案例所使用插件的… flutter_sound_record 前言文章案例所使用插件的版本号插件安装引入安卓和ios权限支持的编码自定义生成的文件名代码main.dartaudio_player.dart 源码地址 前言
使用flutter_sound,总是出现莫名的错误,所以改为flutter_sound_record,实现录音录制和播放
文章案例所使用插件的版本号 3.3.2 插件安装
安装方式: 命令行形式:
flutter pub add flutter_sound_recordpubspec.yaml格式 (别忘运行 pub get):
dependencies:flutter_sound_record: ^3.3.2引入
import package:flutter_sound_record/flutter_sound_record.dart;引入安卓和ios权限
Android
uses-permission android:nameandroid.permission.RECORD_AUDIO /
!-- Optional, youll have to check this permission by yourself. --
uses-permission android:nameandroid.permission.WRITE_EXTERNAL_STORAGE /min SDK: 16 (29 if you use OPUS)
iOs
keyNSMicrophoneUsageDescription/key
stringWe need to access to the microphone to record audio file/stringmin SDK: 8.0 (11 if you use OPUS)
支持的编码
enum AudioEncoder {/// Will output to MPEG_4 format containerAAC,/// Will output to MPEG_4 format containerAAC_LD,/// Will output to MPEG_4 format containerAAC_HE,/// sampling rate should be set to 8kHz/// Will output to 3GP format container on AndroidAMR_NB,/// sampling rate should be set to 16kHz/// Will output to 3GP format container on AndroidAMR_WB,/// Will output to MPEG_4 format container/// /!\ SDK 29 on Android /!\/// /!\ SDK 11 on iOs /!\OPUS,
}自定义生成的文件名
在下面main.dart的代码中的 _start() 函数
await _audioRecorder.start();
//path改为自定义的即可,其余参数根据自己需求设置
await _audioRecorder.start(path: aFullPath/myFile.m4a, // requiredencoder: AudioEncoder.AAC, // by defaultbitRate: 128000, // by defaultsampleRate: 44100, // by default
);代码
main.dart
import dart:async;import package:example/audio_player.dart;
import package:flutter/foundation.dart;
import package:flutter/material.dart;
import package:flutter_sound_record/flutter_sound_record.dart;
import package:just_audio/just_audio.dart as ap;class AudioRecorder extends StatefulWidget {const AudioRecorder({required this.onStop, Key? key}) : super(key: key);final void Function(String path) onStop;override_AudioRecorderState createState() _AudioRecorderState();overridevoid debugFillProperties(DiagnosticPropertiesBuilder properties) {super.debugFillProperties(properties);properties.add(ObjectFlagPropertyvoid Function(String path).has(onStop, onStop));}
}class _AudioRecorderState extends StateAudioRecorder {bool _isRecording false;bool _isPaused false;int _recordDuration 0;Timer? _timer;Timer? _ampTimer;final FlutterSoundRecord _audioRecorder FlutterSoundRecord();Amplitude? _amplitude;overridevoid initState() {_isRecording false;super.initState();}overridevoid dispose() {_timer?.cancel();_ampTimer?.cancel();_audioRecorder.dispose();super.dispose();}overrideWidget build(BuildContext context) {return MaterialApp(home: Scaffold(body: Column(mainAxisAlignment: MainAxisAlignment.center,children: Widget[Row(mainAxisAlignment: MainAxisAlignment.center,children: Widget[_buildRecordStopControl(),const SizedBox(width: 20),_buildPauseResumeControl(),const SizedBox(width: 20),_buildText(),],),if (_amplitude ! null) ...Widget[const SizedBox(height: 40),Text(Current: ${_amplitude?.current ?? 0.0}),Text(Max: ${_amplitude?.max ?? 0.0}),],],),),);}Widget _buildRecordStopControl() {late Icon icon;late Color color;if (_isRecording || _isPaused) {icon const Icon(Icons.stop, color: Colors.red, size: 30);color Colors.red.withOpacity(0.1);} else {final ThemeData theme Theme.of(context);icon Icon(Icons.mic, color: theme.primaryColor, size: 30);color theme.primaryColor.withOpacity(0.1);}return ClipOval(child: Material(color: color,child: InkWell(child: SizedBox(width: 56, height: 56, child: icon),onTap: () {_isRecording ? _stop() : _start();},),),);}Widget _buildPauseResumeControl() {if (!_isRecording !_isPaused) {return const SizedBox.shrink();}late Icon icon;late Color color;if (!_isPaused) {icon const Icon(Icons.pause, color: Colors.red, size: 30);color Colors.red.withOpacity(0.1);} else {final ThemeData theme Theme.of(context);icon const Icon(Icons.play_arrow, color: Colors.red, size: 30);color theme.primaryColor.withOpacity(0.1);}return ClipOval(child: Material(color: color,child: InkWell(child: SizedBox(width: 56, height: 56, child: icon),onTap: () {_isPaused ? _resume() : _pause();},),),);}Widget _buildText() {if (_isRecording || _isPaused) {return _buildTimer();}return const Text(Waiting to record);}Widget _buildTimer() {final String minutes _formatNumber(_recordDuration ~/ 60);final String seconds _formatNumber(_recordDuration % 60);return Text($minutes : $seconds,style: const TextStyle(color: Colors.red),);}String _formatNumber(int number) {String numberStr number.toString();if (number 10) {numberStr 0$numberStr;}return numberStr;}Futurevoid _start() async {try {if (await _audioRecorder.hasPermission()) {await _audioRecorder.start();bool isRecording await _audioRecorder.isRecording();setState(() {_isRecording isRecording;_recordDuration 0;});_startTimer();}} catch (e) {if (kDebugMode) {print(e);}}}Futurevoid _stop() async {_timer?.cancel();_ampTimer?.cancel();final String? path await _audioRecorder.stop();widget.onStop(path!);setState(() _isRecording false);}Futurevoid _pause() async {_timer?.cancel();_ampTimer?.cancel();await _audioRecorder.pause();setState(() _isPaused true);}Futurevoid _resume() async {_startTimer();await _audioRecorder.resume();setState(() _isPaused false);}void _startTimer() {_timer?.cancel();_ampTimer?.cancel();_timer Timer.periodic(const Duration(seconds: 1), (Timer t) {setState(() _recordDuration);});_ampTimer Timer.periodic(const Duration(milliseconds: 200), (Timer t) async {_amplitude await _audioRecorder.getAmplitude();setState(() {});});}
}void main() {runApp(const MyApp());
}class MyApp extends StatefulWidget {const MyApp({Key? key}) : super(key: key);override_MyAppState createState() _MyAppState();
}class _MyAppState extends StateMyApp {bool showPlayer false;ap.AudioSource? audioSource;overridevoid initState() {showPlayer false;super.initState();}overrideWidget build(BuildContext context) {return MaterialApp(home: Scaffold(body: Center(child: showPlayer? Padding(padding: const EdgeInsets.symmetric(horizontal: 25),child: AudioPlayer(source: audioSource!,onDelete: () {setState(() showPlayer false);},),): AudioRecorder(onStop: (String path) {setState(() {audioSource ap.AudioSource.uri(Uri.parse(path));showPlayer true;});},),),),);}overridevoid debugFillProperties(DiagnosticPropertiesBuilder properties) {super.debugFillProperties(properties);properties.add(DiagnosticsPropertybool(showPlayer, showPlayer));properties.add(DiagnosticsPropertyap.AudioSource?(audioSource, audioSource));}
}
audio_player.dart
import dart:async;import package:flutter/foundation.dart;
import package:flutter/material.dart;
import package:just_audio/just_audio.dart as ap;class AudioPlayer extends StatefulWidget {const AudioPlayer({required this.source,required this.onDelete,Key? key,}) : super(key: key);/// Path from where to play recorded audiofinal ap.AudioSource source;/// Callback when audio file should be removed/// Setting this to null hides the delete buttonfinal VoidCallback onDelete;overrideAudioPlayerState createState() AudioPlayerState();overridevoid debugFillProperties(DiagnosticPropertiesBuilder properties) {super.debugFillProperties(properties);properties.add(DiagnosticsPropertyap.AudioSource(source, source));properties.add(ObjectFlagPropertyVoidCallback.has(onDelete, onDelete));}
}class AudioPlayerState extends StateAudioPlayer {static const double _controlSize 56;static const double _deleteBtnSize 24;final ap.AudioPlayer _audioPlayer ap.AudioPlayer();late StreamSubscriptionap.PlayerState _playerStateChangedSubscription;late StreamSubscriptionDuration? _durationChangedSubscription;late StreamSubscriptionDuration _positionChangedSubscription;overridevoid initState() {_playerStateChangedSubscription _audioPlayer.playerStateStream.listen((ap.PlayerState state) async {if (state.processingState ap.ProcessingState.completed) {await stop();}setState(() {});});_positionChangedSubscription _audioPlayer.positionStream.listen((Duration position) setState(() {}));_durationChangedSubscription _audioPlayer.durationStream.listen((Duration? duration) setState(() {}));_init();super.initState();}Futurevoid _init() async {await _audioPlayer.setAudioSource(widget.source);}overridevoid dispose() {_playerStateChangedSubscription.cancel();_positionChangedSubscription.cancel();_durationChangedSubscription.cancel();_audioPlayer.dispose();super.dispose();}overrideWidget build(BuildContext context) {return LayoutBuilder(builder: (BuildContext context, BoxConstraints constraints) {return Row(mainAxisAlignment: MainAxisAlignment.spaceBetween,children: Widget[_buildControl(),_buildSlider(constraints.maxWidth),IconButton(icon: const Icon(Icons.delete,color: Color(0xFF73748D),size: _deleteBtnSize,),onPressed: () {// ignore: always_specify_types_audioPlayer.stop().then((value) widget.onDelete());},),],);},);}Widget _buildControl() {Icon icon;Color color;if (_audioPlayer.playerState.playing) {icon const Icon(Icons.pause, color: Colors.red, size: 30);color Colors.red.withOpacity(0.1);} else {final ThemeData theme Theme.of(context);icon Icon(Icons.play_arrow, color: theme.primaryColor, size: 30);color theme.primaryColor.withOpacity(0.1);}return ClipOval(child: Material(color: color,child: InkWell(child: SizedBox(width: _controlSize, height: _controlSize, child: icon),onTap: () {if (_audioPlayer.playerState.playing) {pause();} else {play();}},),),);}Widget _buildSlider(double widgetWidth) {final Duration position _audioPlayer.position;final Duration? duration _audioPlayer.duration;bool canSetValue false;if (duration ! null) {canSetValue position.inMilliseconds 0;canSetValue position.inMilliseconds duration.inMilliseconds;}double width widgetWidth - _controlSize - _deleteBtnSize;width - _deleteBtnSize;return SizedBox(width: width,child: Slider(activeColor: Theme.of(context).primaryColor,inactiveColor: Theme.of(context).colorScheme.secondary,onChanged: (double v) {if (duration ! null) {final double position v * duration.inMilliseconds;_audioPlayer.seek(Duration(milliseconds: position.round()));}},value: canSetValue duration ! null ? position.inMilliseconds / duration.inMilliseconds : 0.0,),);}Futurevoid play() {return _audioPlayer.play();}Futurevoid pause() {return _audioPlayer.pause();}Futurevoid stop() async {await _audioPlayer.stop();return _audioPlayer.seek(Duration.zero);}
}
源码地址
https://github.com/josephcrowell/flutter_sound_record/
