目录插件介绍:插件信息:插件使用前的准备工作设置麦克风权限描述权限管理插件 permission_handler音频硬件配置插件 audio_session动画插件常用的方法录音常见
Flutter_sound
这个插件可以实现iOS和Android
平台的录音和播放功能。即可以播放本地音频文件,也可以播放远程URL文件。在这里我讲介绍这个插件的用法以及碰到的一些常见问题如何解决。
flutter_sound支持多种录音格式
flutter_sound支持多种播放格式
flutter_sound支持音频振幅大小
插件地址:GitHub.com/ryanheise/a…
插件版本:9.2.9
<key>NSMicrophoneUsageDescription</key>
<string>描述你使用麦克风用来干嘛</string>
注意:还需要在Podfile文件中配置
post_install do |installer|
installer.pods_project.targets.each do |target|
flutter_additional_ios_build_settings(target)
target.build_configurations.each do |config|
config.build_settings['GCC_PREPROCESSOR_DEFINITIONS'] ||= [
'$(inherited)',
## dart: PermissionGroup.microphone
'PERMISSION_MICROPHONE=1',
]
end
end
end
还需要在iOS工程中增加libc++.tbd
库,具体路径
AndroidManifest.xml
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
这里还用了下面几个插件
插件信息:permission_handler: ^9.2.0
插件地址:pub.flutter-io.cn/packages/pe…
插件信息:audio_session: ^0.1.6
插件地址:github.com/ryanheise/a…
插件信息:lottie: 1.2.1
插件地址:pub.flutter-io.cn/packages/fl…
FlutterSoundRecorder recorderModule = FlutterSoundRecorder();
Future<void> init() async {
//开启录音
await recorderModule.openRecorder();
//设置订阅计时器
await recorderModule
.setSubscriptionDuration(const Duration(milliseconds: 10));
//初始化日期插件
await initializeDateFORMatting();
}
Future<bool> getPermissionStatus() async {
Permission permission = Permission.microphone;
//granted 通过,denied 被拒绝,permanentlyDenied 拒绝且不在提示
PermissionStatus status = await permission.status;
if (status.isGranted) {
return true;
} else if (status.isDenied) {
requestPermission(permission);
} else if (status.isPermanentlyDenied) {
openAppSettings();
} else if (status.isRestricted) {
requestPermission(permission);
} else {}
return false;
}
///申请权限
void requestPermission(Permission permission) async {
PermissionStatus status = await permission.request();
if (status.isPermanentlyDenied) {
openAppSettings();
}
}
/// 开始录音
_startRecorder() async {
try {
//获取麦克风权限
await getPermissionStatus().then((value) async {
if (!value) {
return;
}
//用户允许使用麦克风之后开始录音
Directory tempDir = await getTemporaryDirectory();
var time = DateTime.now().millisecondsSinceEpoch;
String path = '${tempDir.path}/$time${ext[Codec.aacADTS.index]}';
//这里我录制的是aac格式的,还有其他格式
await recorderModule.startRecorder(
toFile: path,
codec: Codec.aacADTS,
bitRate: 8000,
numChannels: 1,
sampleRate: 8000,
);
/// 监听录音
_recorderSubscription = recorderModule.onProgress!.listen((e) {
var date = DateTime.fromMillisecondsSinceEpoch(
e.duration.inMilliseconds,
isUtc: true);
var txt = DateFormat('mm:ss:SS', 'en_GB').format(date);
//设置了最大录音时长
if (date.second >= _maxLength) {
_stopRecorder();
return;
}
setState(() {
//更新录音时长
_recordText = txt.substring(1, 5);
});
});
setState(() {
//更新录音状态和录音文件路径
_state = RecordPlayState.recording;
_path = path;
});
});
} catch (err) {
setState(() {
_stopRecorder();
_state = RecordPlayState.record;
_cancelRecorderSubscriptions();
});
}
}
/// 结束录音
_stopRecorder() async {
try {
await recorderModule.stopRecorder();
_cancelRecorderSubscriptions();
// _getDuration();
} catch (err) {}
setState(() {
_state = RecordPlayState.record;
});
}
///销毁录音
void dispose() {
super.dispose();
_cancelRecorderSubscriptions();
_releaseFlauto();
}
/// 取消录音监听
void _cancelRecorderSubscriptions() {
if (_recorderSubscription != null) {
_recorderSubscription!.cancel();
_recorderSubscription = null;
}
}
/// 释放录音
Future<void> _releaseFlauto() async {
try {
await recorderModule.closeRecorder();
} catch (e) {}
}
/// 判断文件是否存在
Future<bool> _fileExists(String path) async {
return await File(path).exists();
}
FlutterSoundPlayer playerModule = FlutterSoundPlayer();
init() async {
await playerModule.closePlayer();
await playerModule.openPlayer();
await playerModule
.setSubscriptionDuration(const Duration(milliseconds: 10));
//这块是设置音频,暂时没用到可以不用设置
final session = await AudioSession.instance;
await session.configure(AudioSessionConfiguration(
avAudioSessionCateGory: AVAudioSessionCategory.playAndRecord,
avAudioSessionCategoryOptions:
AVAudioSessionCategoryOptions.allowBluetooth |
AVAudioSessionCategoryOptions.defaultToSpeaker,
avAudioSessionMode: AVAudioSessionMode.spokenAudio,
avAudioSessionRouteSharingPolicy:
AVAudioSessionRouteSharingPolicy.defaultPolicy,
avAudioSessionSetActiveOptions: AVAudioSessionSetActiveOptions.none,
androidAudioAttributes: const AndroidAudioAttributes(
contentType: AndroidAudiocontentType.speech,
flags: AndroidAudioFlags.none,
usage: AndroidAudioUsage.voiceCommunication,
),
androidAudioFocusGainType: AndroidAudioFocusGainType.gain,
androidWillPauseWhenDucked: true,
));
}
///开始播放,这里做了一个播放状态的回调
void startPlayer(PlayStateBack callBack) async {
try {
if (path.contains('Http')) {
await playerModule.startPlayer(
fromURI: path,
codec: Codec.mp3,
sampleRate: 44000,
whenFinished: () {
stopPlayer();
callBack(0);
});
} else {
//判断文件是否存在
if (await _fileExists(path)) {
if (playerModule.isPlaying) {
playerModule.stopPlayer();
}
await playerModule.startPlayer(
fromURI: path,
codec: Codec.aacADTS,
sampleRate: 44000,
whenFinished: () {
stopPlayer();
callBack(0);
});
} else {}
}
//监听播放进度
_playerSubscription = playerModule.onProgress!.listen((e) {});
callBack(1);
} catch (err) {
callBack(0);
}
}
/// 结束播放
void stopPlayer() async {
try {
await playerModule.stopPlayer();
cancelPlayerSubscriptions();
} catch (err) {}
}
/// 取消播放监听
void cancelPlayerSubscriptions() {
if (_playerSubscription != null) {
_playerSubscription!.cancel();
_playerSubscription = null;
}
}
///获取播放状态
Future<PlayerState> getPlayState() async {
return await playerModule.getPlayerState();
}
/// 释放播放器
void releaseFlauto() async {
try {
await playerModule.closePlayer();
} catch (e) {
print(e);
}
}
/// 判断文件是否存在
Future<bool> _fileExists(String path) async {
return await File(path).exists();
}
在进行录音和播放的过程中难免使用到动画,这里我说下如何加载gif和动画文件
Visibility(
visible: (item.playing.value == 1) ? true : false,
child: Image.asset('assets/-comm/comm_audio_paly.gif', width: 20, height: 20,),
replacement: const Image(
image: AssetImage('assets/-comm/comm_audio_icon.png'),
width: 20,
height: 20,
),
)
Lottie.asset('assets/-comm/record_audio_animation.JSON',
height: 25,
width: ScreenAdapter.screenWidth() -ScreenAdapter.width(160),
animate: true)
var map = {
"file": MultipartFile.fromBytes(
await File.fromUri(Uri(path: path)).readAsBytes(),
filename: "$fileName.mp3",
contentType: MediaType.parse("audio/mp3"))
};
上面介绍了如何录音,如何播放本地和远程音频文件,以及如何实现动画,在录制完音频文件后如何上传,这些都是我们平常使用这个功能会遇到的问题。在使用的过程中遇到的问题也有列出,希望对您有所帮助。
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本文标题: 基于flutter sound插件实现录音与播放功能
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