flutter_audio_rec

Description:

flutter audio rec

originally a fork of flutter_audio_recorder2 with few more features.
i made this out of flutter_audio_recorder2 because the author was inactive(he isn't merging PRs or attending to issues) and i started having alot of issues with the plugin
flutter_audio_rec #





English
Flutter Audio Rec Plugin that supports Record Pause Resume Stop and provide access to audio level metering properties average power peak power
Works for both Android and iOS

Installation #
add flutter_audio_rec to your pubspec.yaml
iOS Permission #

Add usage description to Info.plist

<key>NSMicrophoneUsageDescription</key>
<string>Can We Use Your Microphone Please</string>
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Then use hasPermission api to ask user for permission when needed

Android Permission #

Add uses-permission to ./android/app/src/main/AndroidManifest.xml in xml root level like below

...
</application>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
...
</manifest>
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Then use hasPermission api to ask user for permission when needed

Configuration #
iOS Deployment Target is 8.0 above
Android

AndroidX: use latest version (0.5.x)
Legacy Android: use old version (0.4.9)

Usage #
Recommended API Usage: hasPermission => init > start -> (pause <-> resume) * n -> stop, call init again before start another recording
Always check permission first(it will request permission if permission has not been set to true/false yet, otherwise it will return the result of recording permission)
bool hasPermission = await FlutterAudioRec.hasPermissions;
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Initialize (run this before start, so we could check if file with given name already exists)
var recorder = FlutterAudioRec("file_path.mp4"); // .wav .aac .m4a
await recorder.initialized;
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or
var recorder = FlutterAudioRec("file_path", audioFormat: AudioFormat.AAC); // or AudioFormat.WAV
await recorder.initialized;
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Sample Rate
var recorder = FlutterAudioRec("file_path", audioFormat: AudioFormat.AAC, sampleRate: 22000); // sampleRate is 16000 by default
await recorder.initialized;
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Audio Extension and Format Mapping



Audio Format
Audio Extension List




AAC
.m4a .aac .mp4


WAV
.wav



Start recording
await recorder.start();
var recording = await recorder.current(channel: 0);
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Get recording details
var current = await recording.current(channel: 0);
// print(current.status);
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You could use a timer to access details every 50ms(simply cancel the timer when recording is done)
new Timer.periodic(tick, (Timer t) async {
var current = await recording.current(channel: 0);
// print(current.status);
setState(() {
});
});
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Recording



Name
Description




path
String


extension
String


duration
Duration


audioFormat
AudioFormat


metering
AudioMetering


status
RecordingStatus



Recording.metering



Name
Description




peakPower
double


averagePower
double


isMeteringEnabled
bool



Recording.status
Unset,Initialized,Recording,Paused,Stopped
Pause
await recorder.pause();
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Resume
await recorder.resume();
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Stop (after stop, run init again to create another recording)
var result = await recorder.stop();
File file = widget.localFileSystem.file(result.path);
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Example #
Please check example app using Xcode.
Getting Started #
This project is a starting point for a Flutter
plug-in package,
a specialized package that includes platform-specific implementation code for
Android and/or iOS.
For help getting started with Flutter, view our
online documentation, which offers tutorials,
samples, guidance on mobile development, and a full API reference.