import 'dart:async'; import 'dart:io'; import 'dart:math'; import 'package:flutter/material.dart'; import 'package:flutter_gen/gen_l10n/l10n.dart'; import 'package:flutter_sound_lite/flutter_sound.dart'; import 'package:path_provider/path_provider.dart'; class RecordingDialog extends StatefulWidget { const RecordingDialog({ Key key, }) : super(key: key); @override _RecordingDialogState createState() => _RecordingDialogState(); } class _RecordingDialogState extends State { final FlutterSoundRecorder flutterSound = FlutterSoundRecorder(); String time = '00:00:00'; StreamSubscription _recorderSubscription; bool error = false; String _recordedPath; double _decibels = 0; void startRecording() async { try { await flutterSound.openAudioSession(); await flutterSound.setSubscriptionDuration(Duration(milliseconds: 100)); final codec = Codec.aacADTS; final tempDir = await getTemporaryDirectory(); _recordedPath = '${tempDir.path}/recording${ext[codec.index]}'; // delete any existing file var outputFile = File(_recordedPath); if (outputFile.existsSync()) { await outputFile.delete(); } await flutterSound.startRecorder(codec: codec, toFile: _recordedPath); _recorderSubscription = flutterSound.onProgress.listen((e) { setState(() { _decibels = e.decibels; time = '${e.duration.inMinutes.toString().padLeft(2, '0')}:${(e.duration.inSeconds % 60).toString().padLeft(2, '0')}'; }); }); } catch (e) { error = true; } } @override void initState() { super.initState(); startRecording(); } @override void dispose() { if (flutterSound.isRecording) flutterSound.stopRecorder(); _recorderSubscription?.cancel(); flutterSound.closeAudioSession(); super.dispose(); } @override Widget build(BuildContext context) { if (error) { Timer(Duration(seconds: 1), () { Navigator.of(context, rootNavigator: false).pop(); }); } const maxDecibalWidth = 64.0; final decibalWidth = min(_decibels / 2, maxDecibalWidth).toDouble(); return AlertDialog( content: Row( children: [ Container( width: maxDecibalWidth, height: maxDecibalWidth, alignment: Alignment.center, child: AnimatedContainer( duration: Duration(milliseconds: 50), width: decibalWidth, height: decibalWidth, decoration: BoxDecoration( color: Colors.red, borderRadius: BorderRadius.circular(decibalWidth), ), ), ), SizedBox(width: 8), Expanded( child: Text( '${L10n.of(context).recording}: $time', style: TextStyle( fontSize: 18, ), ), ), ], ), actions: [ TextButton( child: Text( L10n.of(context).cancel.toUpperCase(), style: TextStyle( color: Theme.of(context).textTheme.bodyText2.color.withAlpha(150), ), ), onPressed: () => Navigator.of(context, rootNavigator: false).pop(), ), TextButton( child: Row( children: [ Text(L10n.of(context).send.toUpperCase()), SizedBox(width: 4), Icon(Icons.send_outlined, size: 15), ], ), onPressed: () async { await _recorderSubscription?.cancel(); await flutterSound.stopRecorder(); Navigator.of(context, rootNavigator: false) .pop(_recordedPath); }, ), ], ); } }