diff --git a/lib/pages/battery_health_page.dart b/lib/pages/battery_health_page.dart
index e63d7e5..e1b0628 100644
--- a/lib/pages/battery_health_page.dart
+++ b/lib/pages/battery_health_page.dart
@@ -8,6 +8,7 @@ import 'package:sqflite/sqflite.dart';
 import 'package:path_provider/path_provider.dart';
 import 'package:path/path.dart' as path;
 import 'package:device_info_plus/device_info_plus.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 import '../models/device_matching.dart';
 import '../utils/charge_utils.dart';
@@ -250,6 +251,10 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
 
   // ---------- SAF 授权引导 ----------
   void _showSafAuthorizationDialog() {
+<<<<<<< HEAD
+=======
+    // 避免重复弹窗
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     if (!mounted) return;
 
     showDialog(
@@ -275,6 +280,10 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
           TextButton(
             onPressed: () {
               Navigator.pop(context);
+<<<<<<< HEAD
+=======
+              // 用户取消后，保持当前状态，但不阻塞后续操作
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
               setState(() {
                 _safState = SafPermissionState.denied;
               });
@@ -283,11 +292,19 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
           ),
           ElevatedButton(
             onPressed: () async {
+<<<<<<< HEAD
               final ctx = context;
               Navigator.pop(ctx);
               final result = await _safService.requestPermission();
               if (result.success) {
                 if (!mounted) return;
+=======
+              final ctx = context; // 保存引用
+              Navigator.pop(ctx);
+              final result = await _safService.requestPermission();
+              if (result.success) {
+                if (!mounted) return; // 先检查 State 是否还在
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
                 setState(() {
                   _safState = SafPermissionState.authorized;
                 });
@@ -300,10 +317,17 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
                     backgroundColor: Colors.red,
                   ),
                 );
+<<<<<<< HEAD
                 _showSafAuthorizationDialog();
               }
             },
             child: const Text('选择文件夹'), // 🟢 加这行
+=======
+                // 重新弹窗
+                _showSafAuthorizationDialog();
+              }
+            },
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
           ),
         ],
       ),
diff --git a/lib/services/saf_storage_service.dart b/lib/services/saf_storage_service.dart
index a109bac..0d763ac 100644
--- a/lib/services/saf_storage_service.dart
+++ b/lib/services/saf_storage_service.dart
@@ -1,15 +1,24 @@
 import 'dart:io';
 import 'package:flutter/foundation.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+<<<<<<< HEAD
 import 'package:file_picker/file_picker.dart';
 import '../models/saf_permission_state.dart';
 
 /// 使用 file_picker 实现文件夹访问
+=======
+import 'package:flutter_saf/flutter_saf.dart';
+import '../models/saf_permission_state.dart';
+
+/// SAF 存储服务
+/// 负责管理通过 SAF 授权的文件夹访问
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
 class SafStorageService {
   static final SafStorageService _instance = SafStorageService._internal();
   factory SafStorageService() => _instance;
   SafStorageService._internal();
 
+<<<<<<< HEAD
   static const String _prefKeySafPath = 'saf_storage_path';
   String? _cachedPath;
 
@@ -28,6 +37,34 @@ class SafStorageService {
     try {
       final dir = Directory(_cachedPath!);
       if (!await dir.exists()) {
+=======
+  static const String _prefKeySafUri = 'saf_storage_uri';
+  static const String _prefKeySafPermission = 'saf_permission_uri';
+
+  /// 存储的授权 URI
+  String? _cachedUriString;
+
+  /// 初始化，从 SharedPreferences 恢复授权状态
+  Future<void> init() async {
+    final prefs = await SharedPreferences.getInstance();
+    _cachedUriString = prefs.getString(_prefKeySafUri);
+    if (kDebugMode) {
+      print('[SAF] 初始化，缓存 URI: $_cachedUriString');
+    }
+  }
+
+  /// 获取当前授权状态
+  Future<SafPermissionState> getPermissionState() async {
+    if (_cachedUriString == null || _cachedUriString!.isEmpty) {
+      return SafPermissionState.unauthorized;
+    }
+
+    try {
+      final uri = Uri.parse(_cachedUriString!);
+      // 检查 Uri 是否仍然有效
+      final isValid = await FlutterSaf.isDirectory(uri);
+      if (!isValid) {
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
         _clearCache();
         return SafPermissionState.expired;
       }
@@ -38,6 +75,7 @@ class SafStorageService {
     }
   }
 
+<<<<<<< HEAD
   Future<SafAuthorizationResult> requestPermission() async {
     try {
       // 使用 file_picker 选择文件夹
@@ -60,6 +98,40 @@ class SafStorageService {
       }
 
       return SafAuthorizationResult.success(selectedPath);
+=======
+  /// 请求 SAF 授权（引导用户选择文件夹）
+  /// 返回授权结果
+  Future<SafAuthorizationResult> requestPermission() async {
+    try {
+      // 调用系统文件夹选择器
+      // 引导用户选择 /storage/emulated/0/mbattery_charger/
+      // 或者用户可以选择任何目录，但我们建议选择具体路径
+      final uri = await FlutterSaf.openDocumentTree();
+
+      if (uri == null) {
+        return SafAuthorizationResult.denied();
+      }
+
+      // 获取持久化 URI 权限
+      await FlutterSaf.takePersistableUriPermission(uri);
+
+      // 验证是否为目录
+      final isValid = await FlutterSaf.isDirectory(uri);
+      if (!isValid) {
+        return SafAuthorizationResult.error('选择的路径不是有效目录');
+      }
+
+      // 保存 URI
+      final uriString = uri.toString();
+      _cachedUriString = uriString;
+      await _saveUri(uriString);
+
+      if (kDebugMode) {
+        print('[SAF] 授权成功，URI: $uriString');
+      }
+
+      return SafAuthorizationResult.success(uriString);
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     } catch (e) {
       if (kDebugMode) {
         print('[SAF] 授权失败: $e');
@@ -68,17 +140,32 @@ class SafStorageService {
     }
   }
 
+<<<<<<< HEAD
   Future<bool> logFileExists(String fileName) async {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return false;
     try {
       final file = File('${_cachedPath!}/$fileName');
       return await file.exists();
+=======
+  /// 检查指定日期的日志文件是否存在
+  Future<bool> logFileExists(String fileName) async {
+    final state = await getPermissionState();
+    if (state != SafPermissionState.authorized) {
+      return false;
+    }
+
+    try {
+      final uri = Uri.parse(_cachedUriString!);
+      final fileUri = await FlutterSaf.getFile(uri, fileName);
+      return fileUri != null && await FlutterSaf.isFile(fileUri);
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     } catch (e) {
       return false;
     }
   }
 
+<<<<<<< HEAD
   Future<List<String>> readLogFile(String fileName) async {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return [];
@@ -86,6 +173,25 @@ class SafStorageService {
       final file = File('${_cachedPath!}/$fileName');
       if (!await file.exists()) return [];
       return await file.readAsLines();
+=======
+  /// 读取日志文件内容
+  /// 返回文件行列表，如果文件不存在或读取失败返回空列表
+  Future<List<String>> readLogFile(String fileName) async {
+    final state = await getPermissionState();
+    if (state != SafPermissionState.authorized) {
+      return [];
+    }
+
+    try {
+      final uri = Uri.parse(_cachedUriString!);
+      final fileUri = await FlutterSaf.getFile(uri, fileName);
+      if (fileUri == null || !await FlutterSaf.isFile(fileUri)) {
+        return [];
+      }
+
+      final content = await FlutterSaf.readTextFile(fileUri);
+      return content.split('\n');
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     } catch (e) {
       if (kDebugMode) {
         print('[SAF] 读取文件失败: $e');
@@ -94,6 +200,7 @@ class SafStorageService {
     }
   }
 
+<<<<<<< HEAD
   Future<List<String>> listFiles() async {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return [];
@@ -109,15 +216,34 @@ class SafStorageService {
       if (kDebugMode) {
         print('[SAF] 列出文件失败: $e');
       }
+=======
+  /// 获取文件夹中的文件列表
+  Future<List<String>> listFiles() async {
+    final state = await getPermissionState();
+    if (state != SafPermissionState.authorized) {
+      return [];
+    }
+
+    try {
+      final uri = Uri.parse(_cachedUriString!);
+      final files = await FlutterSaf.listFiles(uri);
+      return files.where((f) => f.isFile).map((f) => f.name).toList();
+    } catch (e) {
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
       return [];
     }
   }
 
+<<<<<<< HEAD
+=======
+  /// 检查授权是否有效，如果失效则清除缓存
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
   Future<bool> validatePermission() async {
     final state = await getPermissionState();
     return state == SafPermissionState.authorized;
   }
 
+<<<<<<< HEAD
   void _clearCache() {
     _cachedPath = null;
     _savePath(null);
@@ -133,4 +259,24 @@ class SafStorageService {
   }
 
   String? get cachedPath => _cachedPath;
+=======
+  /// 清除授权缓存
+  void _clearCache() {
+    _cachedUriString = null;
+    _saveUri(null);
+  }
+
+  /// 保存 URI 到 SharedPreferences
+  Future<void> _saveUri(String? uriString) async {
+    final prefs = await SharedPreferences.getInstance();
+    if (uriString != null && uriString.isNotEmpty) {
+      await prefs.setString(_prefKeySafUri, uriString);
+    } else {
+      await prefs.remove(_prefKeySafUri);
+    }
+  }
+
+  /// 获取缓存的 URI（用于调试）
+  String? get cachedUri => _cachedUriString;
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
 }
diff --git a/macos/Flutter/GeneratedPluginRegistrant.swift b/macos/Flutter/GeneratedPluginRegistrant.swift
index 852819c..649d2d5 100644
--- a/macos/Flutter/GeneratedPluginRegistrant.swift
+++ b/macos/Flutter/GeneratedPluginRegistrant.swift
@@ -6,11 +6,19 @@ import FlutterMacOS
 import Foundation
 
 import device_info_plus
+<<<<<<< HEAD
+=======
+import path_provider_foundation
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
 import shared_preferences_foundation
 import sqflite_darwin
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
   DeviceInfoPlusMacosPlugin.register(with: registry.registrar(forPlugin: "DeviceInfoPlusMacosPlugin"))
+<<<<<<< HEAD
+=======
+  PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
   SharedPreferencesPlugin.register(with: registry.registrar(forPlugin: "SharedPreferencesPlugin"))
   SqflitePlugin.register(with: registry.registrar(forPlugin: "SqflitePlugin"))
 }
diff --git a/pubspec.lock b/pubspec.lock
index a51ba58..247e167 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -416,6 +416,7 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.1.8"
+<<<<<<< HEAD
   pub_semver:
     dependency: transitive
     description:
@@ -432,28 +433,45 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.6.0"
+=======
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
   shared_preferences:
     dependency: "direct main"
     description:
       name: shared_preferences
       sha256: c3025c5534b01739267eb7d76959bbc25a6d10f6988e1c2a3036940133dd10bf
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.5.5"
   shared_preferences_android:
     dependency: transitive
     description:
       name: shared_preferences_android
+<<<<<<< HEAD
       sha256: "93ae5884a9df5d3bb696825bceb3a17590754548b5d740eba51500afc8d088f5"
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "2.4.26"
+=======
+      sha256: e8d4762b1e2e8578fc4d0fd548cebf24afd24f49719c08974df92834565e2c53
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.4.23"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
   shared_preferences_foundation:
     dependency: transitive
     description:
       name: shared_preferences_foundation
       sha256: "4e7eaffc2b17ba398759f1151415869a34771ba11ebbccd1b0145472a619a64f"
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.5.6"
   shared_preferences_linux:
@@ -461,7 +479,11 @@ packages:
     description:
       name: shared_preferences_linux
       sha256: "580abfd40f415611503cae30adf626e6656dfb2f0cee8f465ece7b6defb40f2f"
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.4.1"
   shared_preferences_platform_interface:
@@ -469,7 +491,11 @@ packages:
     description:
       name: shared_preferences_platform_interface
       sha256: "649dc798a33931919ea356c4305c2d1f81619ea6e92244070b520187b5140ef9"
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.4.2"
   shared_preferences_web:
@@ -477,7 +503,11 @@ packages:
     description:
       name: shared_preferences_web
       sha256: c49bd060261c9a3f0ff445892695d6212ff603ef3115edbb448509d407600019
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.4.3"
   shared_preferences_windows:
@@ -485,7 +515,11 @@ packages:
     description:
       name: shared_preferences_windows
       sha256: "94ef0f72b2d71bc3e700e025db3710911bd51a71cefb65cc609dd0d9a982e3c1"
+<<<<<<< HEAD
       url: "https://pub.flutter-io.cn"
+=======
+      url: "https://pub.dev"
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
     source: hosted
     version: "2.4.1"
   sky_engine:
diff --git a/pubspec.yaml b/pubspec.yaml
index 5aec786..c8ac953 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -38,8 +38,12 @@ dependencies:
   path: ^1.9.0
   flutter_svg: ^2.0.10+1
   shared_preferences: ^2.2.0
+<<<<<<< HEAD
   file_picker: ^6.0.0
 
+=======
+  flutter_saf: ^0.1.0
+>>>>>>> c5a85e05a3bb50cd4ea7de0da2db94c867eb7ddd
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.