正在进行初始化减负处理

lib/main.dart

@@ -3,6 +3,8 @@ import 'package:provider/provider.dart';
 import 'package:media_kit/media_kit.dart';
 import 'services/audio_service.dart';
 import 'services/playback_service.dart';
+import 'services/app_lifecycle_service.dart';
+import 'services/webdav_service.dart';
 import 'pages/home_page.dart';
 import 'pages/player_page.dart';
 import 'pages/playlist_page.dart';
@@ -13,34 +15,54 @@ final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
 void main() {
   WidgetsFlutterBinding.ensureInitialized();
 
-  bool initSuccess = false;
-  String? initError;
-
-  try {
-    MediaKit.ensureInitialized();
-    PlaybackService().init();
-    initSuccess = true;
-  } catch (e, stack) {
-    initError = '初始化失败: $e';
-    debugPrint('❌ $initError');
-    debugPrint(stack.toString());
-  }
-
   runApp(
     MultiProvider(
       providers: [
         ChangeNotifierProvider(create: (_) => AudioService()),
+        ChangeNotifierProvider(create: (_) => AppLifecycleService()),
       ],
-      child: QTPlayerApp(
-        initSuccess: initSuccess,
-        initError: initError,
-      ),
+      child: const QTPlayerApp(),
     ),
   );
+
+  // ⭐ 首帧渲染完成后才执行初始化
+  WidgetsBinding.instance.addPostFrameCallback((_) {
+    _initializeServices();
+  });
+}
+
+void _initializeServices() async {
+  final lifecycle = AppLifecycleService();
+
+  try {
+    // 1. MediaKit
+    lifecycle.updateStatus(AppStatus.mediaKitInitializing);
+    MediaKit.ensureInitialized();
+    lifecycle.updateStatus(AppStatus.mediaKitReady);
+
+    // 2. PlaybackService
+    lifecycle.updateStatus(AppStatus.playerInitializing);
+    PlaybackService().init();
+    lifecycle.updateStatus(AppStatus.playerReady);
+
+    // 3. WebDAV
+    lifecycle.updateStatus(AppStatus.webdavChecking);
+    final hasCred = await WebDAVService.instance.loadCredentials();
+    if (hasCred) {
+      lifecycle.updateStatus(AppStatus.webdavReady);
+    } else {
+      lifecycle.updateStatus(AppStatus.webdavMissing);
+    }
+
+    lifecycle.updateStatus(AppStatus.fullReady);
+  } catch (e) {
+    debugPrint('❌ 初始化错误: $e');
+    lifecycle.updateStatus(AppStatus.error);
+  }
 }
 
 // ═══════════════════════════════════════════════════
-// RouteManager - 路由状态管理
+// RouteManager
 // ═══════════════════════════════════════════════════
 class RouteManager extends ChangeNotifier {
   static final RouteManager _instance = RouteManager._internal();
@@ -64,7 +86,7 @@ class RouteManager extends ChangeNotifier {
 }
 
 // ═══════════════════════════════════════════════════
-// 导航观察者 - 监听路由变化
+// 导航观察者
 // ═══════════════════════════════════════════════════
 class MiniPlayerNavigatorObserver extends NavigatorObserver {
   void _updateRoute(Route? route) {
@@ -79,7 +101,6 @@ class MiniPlayerNavigatorObserver extends NavigatorObserver {
 
   @override
   void didPop(Route route, Route? previousRoute) {
-    // ⭐ 关键：用 previousRoute 而不是 navigatorKey.currentContext
     _updateRoute(previousRoute);
   }
 
@@ -90,47 +111,14 @@ class MiniPlayerNavigatorObserver extends NavigatorObserver {
 }
 
 // ═══════════════════════════════════════════════════
-// 主应用
+// QTPlayerApp - 无状态，只负责组装
 // ═══════════════════════════════════════════════════
 class QTPlayerApp extends StatelessWidget {
-  final bool initSuccess;
-  final String? initError;
-
-  const QTPlayerApp({
-    super.key,
-    required this.initSuccess,
-    required this.initError,
-  });
+  const QTPlayerApp({super.key});
 
   @override
   Widget build(BuildContext context) {
-    if (!initSuccess) {
-      return MaterialApp(
-        home: Scaffold(
-          backgroundColor: const Color(0xFF0E1211),
-          body: Center(
-            child: Column(
-              mainAxisAlignment: MainAxisAlignment.center,
-              children: [
-                Icon(Icons.error_outline, size: 64, color: Colors.red[300]),
-                const SizedBox(height: 16),
-                const Text(
-                  '应用初始化失败',
-                  style: TextStyle(color: Colors.white, fontSize: 20),
-                ),
-                const SizedBox(height: 8),
-                Text(
-                  initError ?? '未知错误',
-                  style: TextStyle(color: Colors.grey[400], fontSize: 14),
-                  textAlign: TextAlign.center,
-                ),
-              ],
-            ),
-          ),
-        ),
-      );
-    }
-
+    debugPrint('🔥 QTPlayerApp.build() 执行，首帧即将渲染');
     return MaterialApp(
       title: '清听',
       theme: ThemeData(
@@ -151,15 +139,11 @@ class QTPlayerApp extends StatelessWidget {
         '/player': (context) => const PlayerPage(),
         '/playlist': (context) => const PlaylistPage(),
       },
-      // ⭐ 核心改动：删除手写 Overlay，直接用 Stack
       builder: (context, child) {
         return Stack(
           fit: StackFit.expand,
           children: [
-            // 1. Navigator（所有路由页面）
             if (child != null) child,
-
-            // 2. MiniPlayer（由路由状态控制显隐）
             AnimatedBuilder(
               animation: RouteManager(),
               builder: (context, _) {

lib/services/app_lifecycle_service.dart

@@ -0,0 +1,43 @@
+import 'package:flutter/material.dart';
+
+/// App 生命周期状态
+enum AppStatus {
+  starting, // 启动中
+  mediaKitInitializing, // MediaKit 初始化中
+  mediaKitReady, // MediaKit 就绪
+  playerInitializing, // 播放器初始化中
+  playerReady, // 播放器就绪
+  webdavChecking, // WebDAV 检测中
+  webdavReady, // WebDAV 就绪
+  webdavMissing, // WebDAV 未配置
+  fullReady, // 完全就绪
+  error, // 错误
+}
+
+class AppLifecycleService extends ChangeNotifier {
+  AppStatus _status = AppStatus.starting;
+
+  AppStatus get status => _status;
+
+  bool get isPlayerReady =>
+      _status == AppStatus.playerReady || _status == AppStatus.fullReady;
+
+  bool get isWebDAVReady =>
+      _status == AppStatus.webdavReady || _status == AppStatus.fullReady;
+
+  bool get isFullReady => _status == AppStatus.fullReady;
+
+  void updateStatus(AppStatus newStatus) {
+    if (_status != newStatus) {
+      _status = newStatus;
+      debugPrint('🔄 App 状态更新: $newStatus');
+      notifyListeners();
+    }
+  }
+
+  // 重置（用于错误恢复）
+  void reset() {
+    _status = AppStatus.starting;
+    notifyListeners();
+  }
+}