fluffychat/lib/views/recording_dialog.dart

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Dart
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import 'dart:async';
import 'dart:io';
import 'dart:math';
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import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
import 'package:path_provider/path_provider.dart';
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import 'package:record/record.dart';
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class RecordingDialog extends StatefulWidget {
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static const String recordingFileType = 'mp3';
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const RecordingDialog({
Key key,
}) : super(key: key);
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@override
_RecordingDialogState createState() => _RecordingDialogState();
}
class _RecordingDialogState extends State<RecordingDialog> {
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String time = '00:00:00';
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Timer _recorderSubscription;
Duration _duration;
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bool error = false;
String _recordedPath;
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void startRecording() async {
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try {
final tempDir = await getTemporaryDirectory();
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_recordedPath =
'${tempDir.path}/recording_${DateTime.now().millisecondsSinceEpoch}.${RecordingDialog.recordingFileType}';
// delete any existing file
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final outputFile = File(_recordedPath);
if (outputFile.existsSync()) {
await outputFile.delete();
}
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await Record.start(path: _recordedPath);
setState(() => _duration = Duration.zero);
_recorderSubscription?.cancel();
_recorderSubscription = Timer.periodic(Duration(seconds: 1),
(_) => setState(() => _duration += Duration(seconds: 1)));
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} catch (e) {
error = true;
}
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}
@override
void initState() {
super.initState();
startRecording();
}
@override
void dispose() {
_recorderSubscription?.cancel();
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Record.stop();
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super.dispose();
}
@override
Widget build(BuildContext context) {
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if (error) {
Timer(Duration(seconds: 1), () {
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Navigator.of(context, rootNavigator: false).pop();
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});
}
const maxDecibalWidth = 64.0;
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final decibalWidth =
min(_duration.inSeconds % 2 / 2, maxDecibalWidth).toDouble();
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return AlertDialog(
content: Row(
children: <Widget>[
Container(
width: maxDecibalWidth,
height: maxDecibalWidth,
alignment: Alignment.center,
child: AnimatedContainer(
duration: Duration(milliseconds: 50),
width: decibalWidth,
height: decibalWidth,
decoration: BoxDecoration(
color: Colors.red,
borderRadius: BorderRadius.circular(decibalWidth),
),
),
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),
SizedBox(width: 8),
Expanded(
child: Text(
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'${L10n.of(context).recording}: $time',
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style: TextStyle(
fontSize: 18,
),
),
),
],
),
actions: <Widget>[
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TextButton(
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onPressed: () => Navigator.of(context, rootNavigator: false).pop(),
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child: Text(
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L10n.of(context).cancel.toUpperCase(),
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style: TextStyle(
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color: Theme.of(context).textTheme.bodyText2.color.withAlpha(150),
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),
),
),
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TextButton(
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onPressed: () async {
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_recorderSubscription?.cancel();
await Record.stop();
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Navigator.of(context, rootNavigator: false)
.pop<String>(_recordedPath);
},
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child: Row(
children: <Widget>[
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Text(L10n.of(context).send.toUpperCase()),
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SizedBox(width: 4),
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Icon(Icons.send_outlined, size: 15),
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],
),
),
],
);
}
}