SAF测试阶段，验证中

lib/pages/battery_health_page.dart

@@ -283,18 +283,23 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
           ),
           ElevatedButton(
             onPressed: () async {
-              final ctx = context;
-              Navigator.pop(ctx);
+              // 触发关闭
+              Navigator.pop(context);
+
+              // 延迟确保动画完成
+              await Future.delayed(const Duration(milliseconds: 150));
+
               final result = await _safService.requestPermission();
+
+              if (!mounted) return;
+
               if (result.success) {
-                if (!mounted) return;
                 setState(() {
                   _safState = SafPermissionState.authorized;
                 });
                 readBatteryCapacity();
               } else {
-                if (!mounted) return;
-                ScaffoldMessenger.of(ctx).showSnackBar(
+                ScaffoldMessenger.of(context).showSnackBar(
                   SnackBar(
                     content: Text(result.errorMessage ?? '授权失败，请重试'),
                     backgroundColor: Colors.red,
@@ -303,7 +308,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
                 _showSafAuthorizationDialog();
               }
             },
-            child: const Text('选择文件夹'), // 🟢 加这行
+            child: const Text('选择文件夹'),
           ),
         ],
       ),
@@ -774,6 +779,7 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
     WidgetsBinding.instance.addPostFrameCallback((_) async {
       await _safService.init();
       _safState = await _safService.getPermissionState();
+
       if (_safState == SafPermissionState.unauthorized ||
           _safState == SafPermissionState.expired) {
         if (mounted) _showSafAuthorizationDialog();