microphone_flutter

microphone_flutter

Flutter integration for microphone_dart: cross-platform microphone capture with the goal of no system dependencies for users or devs to install.

This package builds the shared microphone Rust crate automatically (via cargokit) and bundles it with your app, then re-exports the full microphone_dart API.

import 'package:microphone_flutter/microphone_flutter.dart';

await MicrophoneFlutter.ensureInitialized();
if (await Microphone.requestPermission()) {
  final recording = await Microphone.record();
  // ... later ...
  final wav = await recording.stop();
}

Permissions

The microphone is a protected resource; declare it in your app:

• macOS / iOS: add NSMicrophoneUsageDescription to Info.plist. On macOS also enable the audio-input entitlement (com.apple.security.device.audio-input) for sandboxed apps.
• Android: add <uses-permission android:name="android.permission.RECORD_AUDIO"/> to AndroidManifest.xml. Capture uses AAudio, available from Android 8.0 (API 26); the plugin builds with Flutter's default minSdk, and on older devices recording fails with a CaptureException.

Microphone.requestPermission() shows the system prompt on Android, iOS, macOS and the web, and Microphone.record() asks first by itself when permission has not been granted, throwing PermissionDeniedException if the user refuses. Linux and Windows do not gate capture. See the example app for the platform configuration.

Precompiled binaries

Building requires Rust (rustup). cargokit can download signed precompiled binaries instead of invoking cargo, but this repo does not publish them yet (there is no rust/cargokit.yaml or release workflow), so every build compiles the crate from source.