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公云存储
2026-05-15 08:52:48 +08:00
parent 4131f7321a
commit eb35a1d067
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lib/presentation/pages/preview/audio_preview_page.dart
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import 'package:flutter/material.dart';
import 'package:media_kit/media_kit.dart';
import '../../../data/models/file_model.dart';
import '../../../services/file_service.dart';
/// 音频预览页面
class AudioPreviewPage extends StatefulWidget {
final FileModel file;
final String? entityId;
const AudioPreviewPage({super.key, required this.file, this.entityId});
@override
State<AudioPreviewPage> createState() => _AudioPreviewPageState();
}
class _AudioPreviewPageState extends State<AudioPreviewPage> {
late final Player player;
bool _isLoading = true;
String? _errorMessage;
@override
void initState() {
super.initState();
player = Player();
_loadAudioUrl();
}
Future<void> _loadAudioUrl() async {
try {
final response = await FileService().getDownloadUrls(
uris: [widget.file.relativePath],
download: false,
entity: widget.entityId,
);
final urls = response['urls'] as List<dynamic>? ?? [];
if (urls.isNotEmpty) {
final urlData = urls[0] as Map<String, dynamic>;
final url = urlData['url'] as String;
if (mounted) {
setState(() {
_isLoading = false;
});
player.open(Media(url), play: true);
}
} else {
if (mounted) {
setState(() {
_errorMessage = '无法获取音频URL';
_isLoading = false;
});
}
}
} catch (e) {
if (mounted) {
setState(() {
_errorMessage = e.toString();
_isLoading = false;
});
}
}
}
@override
void dispose() {
player.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: const Color(0xFF1A1A2E),
appBar: AppBar(
title: Text(
widget.file.name,
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
backgroundColor: const Color(0xFF1A1A2E),
elevation: 0,
iconTheme: const IconThemeData(color: Colors.white),
titleTextStyle: const TextStyle(
color: Colors.white,
fontSize: 18,
fontWeight: FontWeight.w500,
),
),
body: _buildBody(),
);
}
Widget _buildBody() {
if (_isLoading) {
return const Center(
child: CircularProgressIndicator(color: Colors.white),
);
}
if (_errorMessage != null) {
return Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
const Icon(
Icons.error_outline,
size: 64,
color: Colors.white54,
),
const SizedBox(height: 16),
Text(
_errorMessage!,
textAlign: TextAlign.center,
style: const TextStyle(color: Colors.white54),
),
const SizedBox(height: 16),
FilledButton(
onPressed: () {
setState(() {
_isLoading = true;
_errorMessage = null;
});
_loadAudioUrl();
},
child: const Text('重试'),
),
],
),
);
}
return AudioPlayerWidget(player: player, fileName: widget.file.name);
}
}
/// 音频播放器组件
class AudioPlayerWidget extends StatefulWidget {
final Player player;
final String fileName;
const AudioPlayerWidget({super.key, required this.player, required this.fileName});
@override
State<AudioPlayerWidget> createState() => _AudioPlayerWidgetState();
}
class _AudioPlayerWidgetState extends State<AudioPlayerWidget> {
@override
Widget build(BuildContext context) {
return Container(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [
const Color(0xFF1A1A2E),
const Color(0xFF16213E),
],
),
),
child: Padding(
padding: const EdgeInsets.all(24),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
// 专辑封面
Container(
width: 280,
height: 280,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(20),
gradient: const LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: [Color(0xFFE94560), Color(0xFF533483)],
),
boxShadow: [
BoxShadow(
color: const Color(0xFFE94560).withValues(alpha: 0.3),
blurRadius: 30,
offset: const Offset(0, 10),
),
],
),
child: const Icon(
Icons.music_note,
size: 120,
color: Colors.white,
),
),
const SizedBox(height: 48),
// 文件名
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: Text(
widget.fileName,
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.w600,
color: Colors.white,
),
textAlign: TextAlign.center,
maxLines: 2,
overflow: TextOverflow.ellipsis,
),
),
const SizedBox(height: 8),
// 文件类型
Text(
'音频文件',
style: TextStyle(
fontSize: 14,
color: Colors.white.withValues(alpha: 0.6),
),
),
const SizedBox(height: 48),
// 进度条
_buildProgressBar(),
const SizedBox(height: 32),
// 播放控制
_buildPlaybackControls(),
],
),
),
);
}
Widget _buildProgressBar() {
return Column(
children: [
StreamBuilder(
stream: widget.player.stream.position,
builder: (context, snapshot) {
final position = snapshot.data ?? Duration.zero;
return StreamBuilder(
stream: widget.player.stream.duration,
builder: (context, snapshot) {
final duration = snapshot.data ?? Duration.zero;
return SliderTheme(
data: SliderThemeData(
trackHeight: 4,
thumbShape: const RoundSliderThumbShape(enabledThumbRadius: 8),
overlayShape: const RoundSliderOverlayShape(overlayRadius: 16),
activeTrackColor: const Color(0xFFE94560),
inactiveTrackColor: Colors.white.withValues(alpha: 0.1),
thumbColor: const Color(0xFFE94560),
overlayColor: const Color(0xFFE94560).withValues(alpha: 0.3),
),
child: Slider(
value: position.inMilliseconds.toDouble(),
max: duration.inMilliseconds > 0
? duration.inMilliseconds.toDouble()
: 1.0,
onChanged: (value) {
widget.player.seek(
Duration(milliseconds: value.toInt()),
);
},
),
);
},
);
},
),
Padding(
padding: const EdgeInsets.symmetric(horizontal: 16),
child: StreamBuilder(
stream: widget.player.stream.position,
builder: (context, snapshot) {
final position = snapshot.data ?? Duration.zero;
return StreamBuilder(
stream: widget.player.stream.duration,
builder: (context, snapshot) {
final duration = snapshot.data ?? Duration.zero;
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
_formatDuration(position),
style: TextStyle(
fontSize: 13,
color: Colors.white.withValues(alpha: 0.6),
),
),
Text(
_formatDuration(duration),
style: TextStyle(
fontSize: 13,
color: Colors.white.withValues(alpha: 0.6),
),
),
],
);
},
);
},
),
),
],
);
}
Widget _buildPlaybackControls() {
final screenWidth = MediaQuery.of(context).size.width;
final isSmallScreen = screenWidth < 400;
return Padding(
padding: EdgeInsets.symmetric(horizontal: isSmallScreen ? 8 : 16),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
// 上一首（暂无功能）
Flexible(
child: IconButton(
icon: const Icon(Icons.skip_previous),
iconSize: isSmallScreen ? 28 : 36,
color: Colors.white,
onPressed: () {},
),
),
// 快退10秒
Flexible(
child: IconButton(
icon: const Icon(Icons.replay_10),
iconSize: isSmallScreen ? 32 : 42,
color: Colors.white,
onPressed: () {
final position = widget.player.state.position;
widget.player.seek(position - const Duration(seconds: 10));
},
),
),
// 播放/暂停
StreamBuilder(
stream: widget.player.stream.playing,
builder: (context, snapshot) {
final playing = snapshot.data ?? false;
return Container(
width: isSmallScreen ? 56 : 72,
height: isSmallScreen ? 56 : 72,
decoration: BoxDecoration(
shape: BoxShape.circle,
color: const Color(0xFFE94560),
boxShadow: [
BoxShadow(
color: const Color(0xFFE94560).withValues(alpha: 0.4),
blurRadius: 20,
offset: const Offset(0, 8),
),
],
),
child: IconButton(
icon: Icon(playing ? Icons.pause : Icons.play_arrow),
iconSize: isSmallScreen ? 28 : 36,
color: Colors.white,
onPressed: () {
if (playing) {
widget.player.pause();
} else {
widget.player.play();
}
},
),
);
},
),
// 快进10秒
Flexible(
child: IconButton(
icon: const Icon(Icons.forward_10),
iconSize: isSmallScreen ? 32 : 42,
color: Colors.white,
onPressed: () {
final position = widget.player.state.position;
widget.player.seek(position + const Duration(seconds: 10));
},
),
),
// 下一首（暂无功能）
Flexible(
child: IconButton(
icon: const Icon(Icons.skip_next),
iconSize: isSmallScreen ? 28 : 36,
color: Colors.white,
onPressed: () {},
),
),
],
),
);
}
String _formatDuration(Duration duration) {
final minutes = duration.inMinutes.remainder(60);
final seconds = duration.inSeconds.remainder(60);
return '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
}
}