lxh2875931338
9e58d52678
问题（后台播一段时间后无法缓冲，点下一首也没反应，只能重启）：
1. _isChangingTrack 是没有超时的锁：_playCurrent() 置 true 后，
只有走完 finally 才会清。mpv 的 open() 在弱网下可能挂很久，
锁就一直不释放，之后 next()/previous() 全被静默拒绝。
2. 元数据用 dio.download 整文件下载，和 mpv 流式播放抢带宽，
20Mbps FRP 下播放流只剩一两百 K/s，缓冲长期为 0。
3. 没有订阅 mpv 的 error/buffering，失败无感知、无法自愈。
改动：
- playback_service: open 20s / 控制命令 5s 超时；失败时 stop 回空闲并上抛异常
- audio_service:
* 去掉「正在切歌就拒绝」的逻辑，改为 latest-wins（epoch 校验，
旧请求自行放弃，只有最新请求解锁）
* 播放失败不再吞掉：记录 lastPlaybackError 并 notifyListeners
* 订阅 stream.error / stream.buffering
* 缓冲超过 30s 自动重连当前歌曲并 seek 回原位置（2 分钟内最多一次）
- file_provider: 元数据改为 Range 只取头部 2MB，流式写入并在切歌时取消上一请求
- home_page: 去掉重复的 PlaybackService().play()（同一首歌会被 open 两次），
登录校验提前
验证：dart analyze 无 error；gradlew assembleDebug BUILD SUCCESSFUL。
真机验证待设备重新连接后进行。
734 lines
28 KiB
Dart
734 lines
28 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import '../services/audio_service.dart';
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import '../services/webdav_service.dart';
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import '../widgets/magnetic_scroll_physics.dart';
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import 'webdav_setup_page.dart';
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import 'webdav_file_list_page.dart';
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import '../constants/ui_constants.dart';
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import '../base/base_state.dart';
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// ==================================================
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// 歌曲数据模型
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// ==================================================
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class SongItem {
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final String path;
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final String fileName;
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final String? title;
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final String? artist;
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final String sourceTag;
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final String metadataState;
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SongItem({
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required this.path,
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required this.fileName,
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this.title,
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this.artist,
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required this.sourceTag,
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this.metadataState = 'unknown',
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});
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String get displayTitle => (metadataState == 'success' && title != null)
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? title!
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: fileName.replaceAll(RegExp(r'\.[^.]*$'), '');
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String get displaySubtitle {
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if (metadataState == 'success' && artist != null) {
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return artist!;
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} else {
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return sourceTag;
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}
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}
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}
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// ==================================================
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// 通用可点击组件
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// ==================================================
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class _ClickableTile extends StatefulWidget {
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final Widget child;
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final VoidCallback onTap;
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const _ClickableTile({
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required this.child,
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required this.onTap,
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});
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@override
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State<_ClickableTile> createState() => _ClickableTileState();
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}
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class _ClickableTileState extends State<_ClickableTile>
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with SingleTickerProviderStateMixin {
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late final AnimationController _controller;
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late final Animation<double> _scale;
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static const Duration _duration = Duration(milliseconds: 120);
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@override
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void initState() {
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super.initState();
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_controller = AnimationController(vsync: this, duration: _duration);
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_scale = Tween<double>(begin: 1.0, end: 0.95).animate(
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CurvedAnimation(parent: _controller, curve: Curves.easeOut),
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);
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}
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@override
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void dispose() {
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_controller.dispose();
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super.dispose();
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}
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void _handleTapDown(TapDownDetails details) {
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_controller.forward();
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}
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void _handleTapUp(TapUpDetails details) {
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_controller.reverse();
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widget.onTap();
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}
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void _handleTapCancel() {
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_controller.reverse();
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}
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@override
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Widget build(BuildContext context) {
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return RepaintBoundary(
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child: GestureDetector(
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onTapDown: _handleTapDown,
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onTapUp: _handleTapUp,
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onTapCancel: _handleTapCancel,
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child: AnimatedBuilder(
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animation: _controller,
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builder: (context, child) {
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return Transform.scale(
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scale: _scale.value,
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child: child,
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);
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},
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child: widget.child,
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),
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),
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);
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}
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}
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// ==================================================
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// Sticky Header 委托
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// ==================================================
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class _StickyHeaderDelegate extends SliverPersistentHeaderDelegate {
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final Widget child;
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_StickyHeaderDelegate({required this.child});
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@override
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double get minExtent => 48;
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@override
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double get maxExtent => 48;
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@override
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Widget build(
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BuildContext context, double shrinkOffset, bool overlapsContent) {
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return child;
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}
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@override
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bool shouldRebuild(_StickyHeaderDelegate oldDelegate) {
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return child != oldDelegate.child;
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}
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}
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// ==================================================
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// 主页
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// ==================================================
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class HomePage extends StatefulWidget {
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const HomePage({super.key});
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@override
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State<HomePage> createState() => _HomePageState();
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}
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class _HomePageState extends BaseState<HomePage> {
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List<SongItem> _favorites = [];
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bool _isLoading = true;
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// ========== 滚动控制 ==========
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late final ScrollController _scrollController;
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final GlobalKey _mediaLibraryKey = GlobalKey();
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double _mediaLibraryHeight = 0.0;
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// 高度测量重试控制
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int _heightMeasureRetryCount = 0;
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static const int _maxHeightMeasureRetries = 10;
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// ========== 计算属性 ==========
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double get _progress {
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if (_mediaLibraryHeight <= 0) return 0.0;
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final offset =
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_scrollController.hasClients ? _scrollController.offset : 0.0;
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return (offset / _mediaLibraryHeight).clamp(0.0, 1.0);
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}
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double get _mediaOpacity {
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final p = _progress;
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if (p <= 0.3) {
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return 1.0 - (p / 0.3) * 0.95;
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} else {
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return 0.05 * (1 - (p - 0.3) / 0.7);
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}
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}
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double get _listReveal {
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if (_progress <= 0.7) return 0.0;
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return (_progress - 0.7) / 0.3;
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}
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@override
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void initState() {
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super.initState();
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_scrollController = ScrollController()..addListener(_onScroll);
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_initWebDAV();
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WidgetsBinding.instance.addPostFrameCallback((_) {
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_measureMediaLibraryHeight();
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});
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}
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@override
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void dispose() {
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_scrollController.dispose();
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super.dispose();
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}
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void _measureMediaLibraryHeight() {
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final renderBox =
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_mediaLibraryKey.currentContext?.findRenderObject() as RenderBox?;
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if (renderBox != null) {
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final height = renderBox.size.height;
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if (height > 0 && height != _mediaLibraryHeight) {
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safeSetState(() {
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_mediaLibraryHeight = height;
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_heightMeasureRetryCount = 0;
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});
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print('✅ 媒体库高度测量成功: $height');
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}
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} else {
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_heightMeasureRetryCount++;
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if (_heightMeasureRetryCount < _maxHeightMeasureRetries) {
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Future.delayed(
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const Duration(milliseconds: 200), _measureMediaLibraryHeight);
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} else {
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print('⚠️ 媒体库高度测量失败，使用默认值 280px');
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safeSetState(() {
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_mediaLibraryHeight = 280.0;
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});
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}
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}
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}
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void _onScroll() {
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if (mounted) safeSetState(() {});
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}
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Future<void> _initWebDAV() async {
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safeSetState(() => _isLoading = true);
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try {
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await WebDAVService.instance.loadCredentials();
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_favorites = [];
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} catch (e) {
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_favorites = [];
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} finally {
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if (mounted) safeSetState(() => _isLoading = false);
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}
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}
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void _playSong(SongItem song) async {
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try {
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// 先校验登录，再开始播放。
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// 以前这里是：playSong() 不 await，紧跟着又 PlaybackService().play() 一次，
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// 同一个 Player 会被 open 两次，media_kit 串行化时第二次会顶掉第一次，
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// 表现就是"媒体加载了但没有声音"。
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final headers = await WebDAVService.instance.getAuthHeaders();
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if (headers.isEmpty) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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const SnackBar(
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content: Text('请先登录 WebDAV'),
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backgroundColor: Colors.orange,
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),
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);
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}
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return;
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}
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if (!mounted) return;
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final url = WebDAVService.instance.getFileUrl(song.path);
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final audioService = context.read<AudioService>();
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await audioService.playSong(Song(
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id: song.path,
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title: song.displayTitle,
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artist: song.displaySubtitle,
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url: url,
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));
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} catch (e) {
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if (mounted) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text('播放失败: $e'),
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backgroundColor: Colors.red,
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),
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);
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}
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}
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}
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// ⭐ 退出/重新登录对话框
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void _showReauthDialog() {
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showDialog(
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context: context,
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builder: (context) => AlertDialog(
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backgroundColor: const Color(0xFF1A1F1E),
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title: const Text(
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'重新登录 WebDAV',
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style: TextStyle(color: Colors.white),
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),
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content: const Text(
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'退出当前账号并重新登录？',
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style: TextStyle(color: Colors.grey),
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),
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actions: [
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TextButton(
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onPressed: () => Navigator.pop(context),
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child: const Text('取消'),
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),
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TextButton(
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onPressed: () async {
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Navigator.pop(context);
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await WebDAVService.instance.clearCredentials();
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safeSetState(() {
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_favorites = [];
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_isLoading = false;
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});
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if (mounted) {
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// ⭐ 修复：用 push 保留 HomePage 在栈底
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Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => const WebDAVSetupPage(),
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),
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);
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}
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},
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child: const Text(
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'重新登录',
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style: TextStyle(color: Colors.redAccent),
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),
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),
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],
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),
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);
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}
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void _resetSnapState() {
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if (_scrollController.hasClients) {
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_scrollController.jumpTo(0.0);
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}
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safeSetState(() {});
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}
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@override
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Widget build(BuildContext context) {
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final isConnected = WebDAVService.instance.isConnected;
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final username = WebDAVService.instance.username ?? '点击连接';
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return Scaffold(
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backgroundColor: const Color(0xFF0E1211),
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body: Column(
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children: [
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SafeArea(
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bottom: false,
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child: Padding(
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padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 12),
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child: Row(
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mainAxisAlignment: MainAxisAlignment.spaceBetween,
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children: [
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const Text(
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'清听',
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style: TextStyle(
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fontSize: 28,
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fontWeight: FontWeight.w600,
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color: Colors.white,
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),
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),
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IconButton(
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icon: const Icon(Icons.menu, color: Colors.white54),
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onPressed: () {},
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),
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],
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),
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),
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),
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Expanded(
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child: CustomScrollView(
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controller: _scrollController,
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physics: _mediaLibraryHeight > 0
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? MagneticScrollPhysics(
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snapPoint: _mediaLibraryHeight,
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magneticZoneStart: 0.20,
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)
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: const ClampingScrollPhysics(),
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slivers: [
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SliverToBoxAdapter(
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child: Opacity(
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opacity: _mediaOpacity,
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child: Container(
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key: _mediaLibraryKey,
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padding: const EdgeInsets.symmetric(horizontal: 20),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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'媒体库',
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style: TextStyle(
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fontSize: 22,
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fontWeight: FontWeight.w500,
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color: Color(0xFFB8D4D0),
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),
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),
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const SizedBox(height: 16),
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_ClickableTile(
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onTap: () async {
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if (WebDAVService.instance.isConnected) {
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await Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => const WebDAVFileListPage(),
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),
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);
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_resetSnapState();
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safeSetState(() {});
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} else {
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final result = await Navigator.push(
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context,
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MaterialPageRoute(
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builder: (_) => const WebDAVSetupPage(),
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),
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);
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safeSetState(() {});
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if (result == true) {
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await WebDAVService.instance
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.loadCredentials();
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safeSetState(() {});
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}
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}
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},
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child: Row(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// 左侧云朵图标（固定 56px）
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const Padding(
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padding: EdgeInsets.only(left: 8.0),
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child: Icon(
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Icons.cloud_outlined,
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color: Color(0xFFB8D4D0),
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size: 56,
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),
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),
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const SizedBox(width: 16),
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// 右侧所有内容
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Expanded(
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child: Column(
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crossAxisAlignment:
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CrossAxisAlignment.start,
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mainAxisSize: MainAxisSize.min,
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children: [
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// 第一行：WebDAV + 状态 + 退出按钮
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Row(
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children: [
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const Text(
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'WebDAV',
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.w500,
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color: Colors.white,
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),
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),
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const SizedBox(width: 16),
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Text(
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isConnected ? '● 已连接' : '● 未连接',
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style: TextStyle(
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||
fontSize: 13,
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||
color: isConnected
|
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? const Color(0xFF4CAF50)
|
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: Colors.grey[500],
|
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fontWeight: FontWeight.w400,
|
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),
|
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),
|
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const Spacer(),
|
||
if (isConnected)
|
||
Padding(
|
||
padding:
|
||
const EdgeInsets.only(top: 2),
|
||
child: GestureDetector(
|
||
onTap: _showReauthDialog,
|
||
child: const Icon(
|
||
Icons.logout,
|
||
color: Colors.grey,
|
||
size: 18,
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
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const SizedBox(height: 4),
|
||
// 第二行：用户名
|
||
Text(
|
||
isConnected ? username : '点击连接',
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
color: isConnected
|
||
? Colors.grey[400]
|
||
: Colors.grey[600],
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
const SizedBox(height: 24),
|
||
Row(
|
||
children: [
|
||
Expanded(
|
||
child: _ClickableTile(
|
||
onTap: () {},
|
||
child: Padding(
|
||
padding: const EdgeInsets.symmetric(
|
||
vertical: 10),
|
||
child: Row(
|
||
mainAxisAlignment:
|
||
MainAxisAlignment.center,
|
||
children: [
|
||
Icon(Icons.music_note,
|
||
size: 24,
|
||
color: const Color(0xFFB8D4D0)),
|
||
const SizedBox(width: 8),
|
||
const Text(
|
||
'本地音乐',
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
fontWeight: FontWeight.w400,
|
||
color: Colors.white70,
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
),
|
||
const SizedBox(width: 16),
|
||
Expanded(
|
||
child: _ClickableTile(
|
||
onTap: () {},
|
||
child: Padding(
|
||
padding: const EdgeInsets.symmetric(
|
||
vertical: 10),
|
||
child: Row(
|
||
mainAxisAlignment:
|
||
MainAxisAlignment.center,
|
||
children: [
|
||
Icon(Icons.history,
|
||
size: 24,
|
||
color: const Color(0xFFB8D4D0)),
|
||
const SizedBox(width: 8),
|
||
const Text(
|
||
'最近播放',
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
fontWeight: FontWeight.w400,
|
||
color: Colors.white70,
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
),
|
||
const SizedBox(width: 16),
|
||
Expanded(
|
||
child: _ClickableTile(
|
||
onTap: () {},
|
||
child: Padding(
|
||
padding: const EdgeInsets.symmetric(
|
||
vertical: 10),
|
||
child: Row(
|
||
mainAxisAlignment:
|
||
MainAxisAlignment.center,
|
||
children: [
|
||
Icon(Icons.playlist_play,
|
||
size: 24,
|
||
color: const Color(0xFFB8D4D0)),
|
||
const SizedBox(width: 8),
|
||
const Text(
|
||
'歌单列表',
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
fontWeight: FontWeight.w400,
|
||
color: Colors.white70,
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
const SizedBox(height: 32),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
),
|
||
SliverPersistentHeader(
|
||
pinned: true,
|
||
delegate: _StickyHeaderDelegate(
|
||
child: Container(
|
||
height: 48,
|
||
color: const Color(0xFF0E1211),
|
||
padding: const EdgeInsets.symmetric(horizontal: 20),
|
||
child: const Row(
|
||
children: [
|
||
Icon(Icons.favorite,
|
||
color: Color(0xFFB8D4D0), size: 20),
|
||
SizedBox(width: 8),
|
||
Text(
|
||
'我的收藏',
|
||
style: TextStyle(
|
||
fontSize: 22,
|
||
fontWeight: FontWeight.w500,
|
||
color: Color(0xFFB8D4D0),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
),
|
||
SliverPadding(
|
||
padding: const EdgeInsets.only(
|
||
left: 20,
|
||
right: 20,
|
||
bottom: UIConstants.miniPlayerBottomSpace,
|
||
),
|
||
sliver: _isLoading
|
||
? const SliverFillRemaining(
|
||
child: Center(
|
||
child: CircularProgressIndicator(
|
||
color: Color(0xFFB8D4D0),
|
||
),
|
||
),
|
||
)
|
||
: _favorites.isEmpty
|
||
? SliverFillRemaining(
|
||
child: AnimatedOpacity(
|
||
opacity: 1.0 - _listReveal * 0.3,
|
||
duration: const Duration(milliseconds: 100),
|
||
child: Center(
|
||
child: Column(
|
||
mainAxisAlignment: MainAxisAlignment.center,
|
||
children: [
|
||
Icon(
|
||
Icons.favorite_border,
|
||
size: 48,
|
||
color: Colors.grey[600],
|
||
),
|
||
const SizedBox(height: 16),
|
||
Text(
|
||
'还没有收藏歌曲\n在音乐库中点击 ♡ 添加',
|
||
textAlign: TextAlign.center,
|
||
style: TextStyle(
|
||
fontSize: 16,
|
||
color: Colors.grey[500],
|
||
height: 1.6,
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
),
|
||
)
|
||
: SliverList(
|
||
delegate: SliverChildBuilderDelegate(
|
||
(context, index) {
|
||
final song = _favorites[index];
|
||
final itemProgress =
|
||
(_listReveal * 2 - index / 5)
|
||
.clamp(0.0, 1.0);
|
||
|
||
return AnimatedOpacity(
|
||
opacity: itemProgress,
|
||
duration: const Duration(milliseconds: 150),
|
||
child: Padding(
|
||
padding: const EdgeInsets.symmetric(
|
||
vertical: 6),
|
||
child: ListTile(
|
||
contentPadding: EdgeInsets.zero,
|
||
leading: const Icon(
|
||
Icons.music_note,
|
||
color: Colors.white38,
|
||
size: 20,
|
||
),
|
||
title: Text(
|
||
song.displayTitle,
|
||
style: const TextStyle(
|
||
fontSize: 17,
|
||
fontWeight: FontWeight.w400,
|
||
color: Colors.white,
|
||
),
|
||
maxLines: 1,
|
||
overflow: TextOverflow.ellipsis,
|
||
),
|
||
subtitle: Text(
|
||
song.displaySubtitle,
|
||
style: TextStyle(
|
||
fontSize: 14,
|
||
color: Colors.grey[400],
|
||
),
|
||
maxLines: 1,
|
||
overflow: TextOverflow.ellipsis,
|
||
),
|
||
trailing: IconButton(
|
||
icon: const Icon(
|
||
Icons.favorite,
|
||
color: Color(0xFFB8D4D0),
|
||
size: 20,
|
||
),
|
||
onPressed: () {
|
||
safeSetState(() {
|
||
_favorites.removeAt(index);
|
||
});
|
||
},
|
||
),
|
||
onTap: () => _playSong(song),
|
||
),
|
||
),
|
||
);
|
||
},
|
||
childCount: _favorites.length,
|
||
),
|
||
),
|
||
),
|
||
],
|
||
),
|
||
),
|
||
],
|
||
),
|
||
);
|
||
}
|
||
}
|