播放从webview_flutter加载的html页面链接的位于ApplicationSupportDirectory中的mp3文件,可以通过以下步骤实现:
下面是一个示例代码,演示如何实现上述功能:
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'package:path_provider/path_provider.dart';
import 'package:flutter_sound/flutter_sound.dart';
class WebViewAudioPlayer extends StatefulWidget {
final String audioUrl;
WebViewAudioPlayer({required this.audioUrl});
@override
_WebViewAudioPlayerState createState() => _WebViewAudioPlayerState();
}
class _WebViewAudioPlayerState extends State<WebViewAudioPlayer> {
late FlutterSoundPlayer _audioPlayer;
late String _localFilePath;
@override
void initState() {
super.initState();
_audioPlayer = FlutterSoundPlayer();
_localFilePath = '';
_downloadAudioFile();
}
@override
void dispose() {
_audioPlayer.release();
super.dispose();
}
Future<void> _downloadAudioFile() async {
final response = await http.get(Uri.parse(widget.audioUrl));
final appSupportDir = await getApplicationSupportDirectory();
final audioFile = await File('${appSupportDir.path}/audio.mp3').create();
await audioFile.writeAsBytes(response.bodyBytes);
setState(() {
_localFilePath = audioFile.path;
});
}
Future<void> _playAudio() async {
await _audioPlayer.openAudioSession();
await _audioPlayer.startPlayer(
fromURI: _localFilePath,
codec: Codec.mp3,
);
}
Future<void> _stopAudio() async {
await _audioPlayer.stopPlayer();
await _audioPlayer.closeAudioSession();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('WebView Audio Player'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
ElevatedButton(
onPressed: _localFilePath.isNotEmpty ? _playAudio : null,
child: Text('Play Audio'),
),
SizedBox(height: 16),
ElevatedButton(
onPressed: _localFilePath.isNotEmpty ? _stopAudio : null,
child: Text('Stop Audio'),
),
],
),
),
);
}
}
在上述示例代码中,我们使用了http包来下载mp3文件,并使用Flutter Sound库来播放音频。你可以根据自己的需求选择其他适合的库。
请注意,上述示例代码仅演示了如何实现播放从webview_flutter加载的html页面链接的位于ApplicationSupportDirectory中的mp3文件的基本功能。根据具体需求,你可能需要进一步处理错误、添加进度条、实现音频控制等功能。
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