flutter_audio_recorder

pub version Awesome Flutter

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Flutter Audio Record 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_recorder to your pubspec.yaml

iOS Permission

add usage description to plist

<key>NSMicrophoneUsageDescription</key>
<string>Can We Use Your Microphone Please</string>

note: iOS Deployment Target is 8.0

Usage

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 FlutterAudioRecorder.hasPermissions;

Init (run this before start, so we could check if file with given name already exists)

var recorder = FlutterAudioRecorder("file_path.mp4"); // .wav .aac .m4a
await recorder.initialized;

or

var recorder = FlutterAudioRecorder("file_path", audioFormat: AudioFormat.AAC); // or AudioFormat.WAV
await recorder.initialized;
Sample Rate
var recorder = FlutterAudioRecorder("file_path", audioFormat: AudioFormat.AAC, sampleRate: 22000); // sampleRate is 16000 by default
await recorder.initialized;
Audio Extension and Format Mapping
Audio FormatAudio Extension List
AAC.m4a .aac .mp4
WAV.wav

Start recording

await recorder.start();
var recording = await recorder.current(channel: 0);

Get recording details

var current = await recording.current(channel: 0);
// print(current.status);

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(() {
        });
      });
Recording
NameDescription
pathString
extensionString
durationDuration
audioFormatAudioFormat
meteringAudioMetering
statusRecordingStatus
Recording.metering
NameDescription
peakPowerdouble
averagePowerdouble
isMeteringEnabledbool
Recording.status

Unset,Initialized,Recording,Paused,Stopped

Pause

await recorder.pause();

Resume

await recorder.resume();

Stop (after stop, run init again to create another recording)

var result = await recorder.stop();
File file = widget.localFileSystem.file(result.path);

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.

Libraries

flutter_audio_recorder