SAF测试阶段，验证中

android/app/build.gradle.kts

@@ -6,7 +6,7 @@ plugins {
 
 android {
     namespace = "com.lxh.battery_health"
-    compileSdk = flutter.compileSdkVersion
+    compileSdk = 34
     ndkVersion = flutter.ndkVersion
 
     compileOptions {
@@ -21,38 +21,39 @@ android {
     defaultConfig {
         applicationId = "com.lxh.battery_health"
         minSdk = flutter.minSdkVersion
-        targetSdk = flutter.targetSdkVersion
+        targetSdk = 34
         versionCode = flutter.versionCode
         versionName = flutter.versionName
         multiDexEnabled = true
     }
 
     signingConfigs {
+        // 如果没有正式签名，可以用 debug 签名代替（测试用）
+        // 正式发布时请替换为自己的密钥
+        getByName("debug") {
+            // debug 签名已经存在，无需额外配置
+        }
         create("release") {
-            // 这里配置你正式发布的签名
+            // 如果有正式签名，在这里配置
-            // 如果还没有正式签名，debug 可以用 debug 签名替代
+            // keyAlias = "..."
-            keyAlias = "your_key_alias"
+            // keyPassword = "..."
-            keyPassword = "your_key_password"
+            // storeFile = file("...")
-            storeFile = file("your_keystore.jks")
+            // storePassword = "..."
-            storePassword = "your_store_password"
         }
     }
 
-    signingConfigs {
-        // 如果没有正式签名，可以暂时用 debug 签名
-        // 正式发布时再替换
-    }
-
     buildTypes {
         debug {
+            // 🟢 关键：debug 版本包名加 .dev 后缀
             applicationIdSuffix = ".dev"
             signingConfig = signingConfigs.getByName("debug")
+            isDebuggable = true
+            isMinifyEnabled = false
+            isShrinkResources = false
         }
-
         release {
-            applicationIdSuffix = ""  // 保持原包名
+            // release 版本不加后缀，保持原包名
-            // 🟢 如果还没有正式签名，先用 debug 签名替代
+            signingConfig = signingConfigs.getByName("debug") // 若没有正式签名，先用 debug 签名
-            signingConfig = signingConfigs.getByName("debug")
             isMinifyEnabled = true
             isShrinkResources = true
             proguardFiles(
@@ -61,16 +62,12 @@ android {
             )
         }
     }
-
+}
-    // 如果有 productFlavors，可以在这里配置
-    // 如果没有，忽略即可
-    }
 
 flutter {
     source = "../.."
 }
 
 dependencies {
-    // 如果项目中有其他依赖，添加在这里
+    // 无需额外添加 Activity KTX，因为已改用 startActivityForResult
-    // 注意：sqflite、permission_handler 等 Flutter 插件会自动包含
 }

android/app/src/main/kotlin/com/example/battery_health/MainActivity.kt

@@ -1,96 +0,0 @@
-package com.lxh.battery_health
-
-import android.content.BroadcastReceiver
-import android.content.Context
-import android.content.Intent
-import android.content.IntentFilter
-import android.os.BatteryManager
-import android.os.Bundle
-import androidx.annotation.NonNull
-import io.flutter.embedding.android.FlutterActivity
-import io.flutter.embedding.engine.FlutterEngine
-import io.flutter.plugin.common.EventChannel
-import io.flutter.plugin.common.MethodChannel
-
-class MainActivity : FlutterActivity() {
-    private val CHANNEL = "com.lxh.battery_health/charge"
-    private val EVENT_CHANNEL = "com.lxh.battery_health/charge_events"
-    private var eventSink: EventChannel.EventSink? = null
-
-    private val chargeReceiver = object : BroadcastReceiver() {
-        override fun onReceive(context: Context?, intent: Intent?) {
-            intent ?: return
-            when (intent.action) {
-                Intent.ACTION_POWER_CONNECTED -> sendChargeState(true)
-                Intent.ACTION_POWER_DISCONNECTED -> sendChargeState(false)
-            }
-        }
-    }
-
-    private fun sendChargeState(isCharging: Boolean) {
-        val chargeType = if (isCharging) {
-            val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
-            val plug = batteryIntent?.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) ?: -1
-            android.util.Log.d("BatteryHealth", "plug value: $plug, isCharging: $isCharging")
-            when (plug) {
-                BatteryManager.BATTERY_PLUGGED_AC -> "AC"
-                BatteryManager.BATTERY_PLUGGED_USB -> "USB"
-                BatteryManager.BATTERY_PLUGGED_WIRELESS -> "WIRELESS" // 🟢 关键修复
-                else -> "UNKNOWN"
-            }
-        } else {
-            "NONE"
-        }
-        eventSink?.success(mapOf("isCharging" to isCharging, "chargeType" to chargeType))
-    }
-
-    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
-        super.configureFlutterEngine(flutterEngine)
-
-        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
-            if (call.method == "getChargeState") {
-                val isCharging = getBatteryStatus()
-                val chargeType = if (isCharging) {
-                    val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
-                    val plug = batteryIntent?.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) ?: -1
-                    when (plug) {
-                        BatteryManager.BATTERY_PLUGGED_AC -> "AC"
-                        BatteryManager.BATTERY_PLUGGED_USB -> "USB"
-                        BatteryManager.BATTERY_PLUGGED_WIRELESS -> "WIRELESS" // 🟢 关键修复
-                        else -> "UNKNOWN"
-                    }
-                } else {
-                    "NONE"
-                }
-                result.success(mapOf("isCharging" to isCharging, "chargeType" to chargeType))
-            } else {
-                result.notImplemented()
-            }
-        }
-
-        EventChannel(flutterEngine.dartExecutor.binaryMessenger, EVENT_CHANNEL).setStreamHandler(
-            object : EventChannel.StreamHandler {
-                override fun onListen(arguments: Any?, events: EventChannel.EventSink?) {
-                    eventSink = events
-                    val filter = IntentFilter().apply {
-                        addAction(Intent.ACTION_POWER_CONNECTED)
-                        addAction(Intent.ACTION_POWER_DISCONNECTED)
-                    }
-                    registerReceiver(chargeReceiver, filter)
-                }
-
-                override fun onCancel(arguments: Any?) {
-                    eventSink = null
-                    unregisterReceiver(chargeReceiver)
-                }
-            }
-        )
-    }
-
-    private fun getBatteryStatus(): Boolean {
-        val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
-        val status = batteryIntent?.getIntExtra(BatteryManager.EXTRA_STATUS, -1) ?: -1
-        return status == BatteryManager.BATTERY_STATUS_CHARGING ||
-                status == BatteryManager.BATTERY_STATUS_FULL
-    }
-}

android/app/src/main/kotlin/com/lxh/battery_health/MainActivity.kt

@@ -0,0 +1,256 @@
+package com.lxh.battery_health
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.Uri
+import android.os.BatteryManager
+import android.os.Build
+import android.os.Bundle
+import android.provider.DocumentsContract
+import android.provider.OpenableColumns
+import androidx.activity.ComponentActivity
+import androidx.annotation.NonNull
+import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.EventChannel
+import io.flutter.plugin.common.MethodChannel
+import java.io.BufferedReader
+import java.io.InputStreamReader
+
+class MainActivity : FlutterActivity() {
+    // ---------- 充电状态 ----------
+    private val CHARGE_CHANNEL = "com.lxh.battery_health/charge"
+    private val EVENT_CHANNEL = "com.lxh.battery_health/charge_events"
+    private var eventSink: EventChannel.EventSink? = null
+
+    // ---------- SAF 相关 ----------
+    private val SAF_CHANNEL = "com.lxh.battery_health/saf"
+    private var safResult: MethodChannel.Result? = null
+    private var safUri: Uri? = null
+    private val FOLDER_PICKER_REQUEST = 1001
+
+    // ---------- 充电广播接收器 ----------
+    private val chargeReceiver = object : BroadcastReceiver() {
+        override fun onReceive(context: Context?, intent: Intent?) {
+            intent ?: return
+            when (intent.action) {
+                Intent.ACTION_POWER_CONNECTED -> sendChargeState(true)
+                Intent.ACTION_POWER_DISCONNECTED -> sendChargeState(false)
+            }
+        }
+    }
+
+    private fun sendChargeState(isCharging: Boolean) {
+        val chargeType = if (isCharging) {
+            val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+            val plug = batteryIntent?.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) ?: -1
+            android.util.Log.d("BatteryHealth", "plug value: $plug, isCharging: $isCharging")
+            when (plug) {
+                BatteryManager.BATTERY_PLUGGED_AC -> "AC"
+                BatteryManager.BATTERY_PLUGGED_USB -> "USB"
+                BatteryManager.BATTERY_PLUGGED_WIRELESS -> "WIRELESS"
+                else -> "UNKNOWN"
+            }
+        } else {
+            "NONE"
+        }
+        eventSink?.success(mapOf("isCharging" to isCharging, "chargeType" to chargeType))
+    }
+
+    private fun getBatteryStatus(): Boolean {
+        val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+        val status = batteryIntent?.getIntExtra(BatteryManager.EXTRA_STATUS, -1) ?: -1
+        return status == BatteryManager.BATTERY_STATUS_CHARGING ||
+                status == BatteryManager.BATTERY_STATUS_FULL
+    }
+
+    // ---------- SAF 方法 ----------
+    private fun openFolderPicker() {
+        try {
+            val intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE).apply {
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    try {
+                        val downloadsUri = DocumentsContract.buildDocumentUri(
+                            "com.android.externalstorage.documents",
+                            "primary:Downloads"
+                        )
+                        putExtra(DocumentsContract.EXTRA_INITIAL_URI, downloadsUri)
+                    } catch (e: Exception) {
+                        // 忽略
+                    }
+                }
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION)
+            }
+            startActivityForResult(intent, FOLDER_PICKER_REQUEST)
+        } catch (e: Exception) {
+            android.util.Log.e("BatteryHealth", "打开文件夹选择器失败: ${e.message}")
+            safResult?.error("SELECT_FOLDER_FAILED", e.message, null)
+            safResult = null
+        }
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        if (requestCode == FOLDER_PICKER_REQUEST && resultCode == ComponentActivity.RESULT_OK) {
+            val uri = data?.data
+            if (uri != null) {
+                try {
+                    val takeFlags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
+                    contentResolver.takePersistableUriPermission(uri, takeFlags)
+                    safUri = uri
+                    android.util.Log.d("BatteryHealth", "SAF URI: $uri")
+                    safResult?.success(uri.toString())
+                } catch (e: Exception) {
+                    android.util.Log.e("BatteryHealth", "SAF 授权失败: ${e.message}")
+                    safResult?.error("SAF_FAILED", e.message, null)
+                }
+            } else {
+                safResult?.success(null)
+            }
+            safResult = null
+        }
+    }
+
+    private fun getTreeDocId(): String? {
+        return safUri?.let { DocumentsContract.getTreeDocumentId(it) }
+    }
+
+    private fun listFiles(): List<String> {
+        val result = mutableListOf<String>()
+        val docId = getTreeDocId()
+        if (docId == null || docId.isEmpty()) return result
+
+        try {
+            val childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(safUri!!, docId)
+            contentResolver.query(childrenUri, null, null, null, null)?.use { cursor ->
+                val nameIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
+                while (cursor.moveToNext()) {
+                    val name = cursor.getString(nameIndex)
+                    if (name != null) {
+                        result.add(name)
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            android.util.Log.e("BatteryHealth", "列出文件失败: ${e.message}")
+        }
+        return result
+    }
+
+    private fun getFileUri(fileName: String): Uri? {
+        val docId = getTreeDocId() ?: return null
+        try {
+            val childrenUri = DocumentsContract.buildChildDocumentsUriUsingTree(safUri!!, docId)
+            contentResolver.query(childrenUri, null, null, null, null)?.use { cursor ->
+                val nameIndex = cursor.getColumnIndex(OpenableColumns.DISPLAY_NAME)
+                val idIndex = cursor.getColumnIndex(DocumentsContract.Document.COLUMN_DOCUMENT_ID)
+                while (cursor.moveToNext()) {
+                    val name = cursor.getString(nameIndex)
+                    if (name == fileName) {
+                        val fileDocId = cursor.getString(idIndex)
+                        return DocumentsContract.buildDocumentUriUsingTree(safUri!!, fileDocId)
+                    }
+                }
+            }
+        } catch (e: Exception) {
+            android.util.Log.e("BatteryHealth", "获取文件URI失败: ${e.message}")
+        }
+        return null
+    }
+
+    private fun readFile(uri: Uri): String? {
+        return try {
+            contentResolver.openInputStream(uri)?.use { inputStream ->
+                BufferedReader(InputStreamReader(inputStream)).use { reader ->
+                    reader.readText()
+                }
+            }
+        } catch (e: Exception) {
+            android.util.Log.e("BatteryHealth", "读取文件失败: ${e.message}")
+            null
+        }
+    }
+
+    private fun readLogFile(fileName: String): String? {
+        val fileUri = getFileUri(fileName)
+        return fileUri?.let { readFile(it) }
+    }
+
+    // ---------- Flutter 通道配置 ----------
+    override fun configureFlutterEngine(@NonNull flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        // 充电状态通道
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHARGE_CHANNEL)
+            .setMethodCallHandler { call, result ->
+                if (call.method == "getChargeState") {
+                    val isCharging = getBatteryStatus()
+                    val chargeType = if (isCharging) {
+                        val batteryIntent = registerReceiver(null, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+                        val plug = batteryIntent?.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1) ?: -1
+                        when (plug) {
+                            BatteryManager.BATTERY_PLUGGED_AC -> "AC"
+                            BatteryManager.BATTERY_PLUGGED_USB -> "USB"
+                            BatteryManager.BATTERY_PLUGGED_WIRELESS -> "WIRELESS"
+                            else -> "UNKNOWN"
+                        }
+                    } else {
+                        "NONE"
+                    }
+                    result.success(mapOf("isCharging" to isCharging, "chargeType" to chargeType))
+                } else {
+                    result.notImplemented()
+                }
+            }
+
+        // SAF 通道
+        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, SAF_CHANNEL)
+            .setMethodCallHandler { call, result ->
+                when (call.method) {
+                    "selectFolder" -> {
+                        safResult = result
+                        openFolderPicker()
+                    }
+                    "readLogFile" -> {
+                        val fileName = call.argument<String>("fileName")
+                        if (fileName != null) {
+                            val content = readLogFile(fileName)
+                            result.success(content)
+                        } else {
+                            result.error("INVALID_ARGUMENT", "fileName is required", null)
+                        }
+                    }
+                    "listFiles" -> {
+                        val files = listFiles()
+                        result.success(files)
+                    }
+                    "getUri" -> {
+                        result.success(safUri?.toString())
+                    }
+                    else -> result.notImplemented()
+                }
+            }
+
+        // 充电状态事件通道
+        EventChannel(flutterEngine.dartExecutor.binaryMessenger, EVENT_CHANNEL)
+            .setStreamHandler(
+                object : EventChannel.StreamHandler {
+                    override fun onListen(arguments: Any?, events: EventChannel.EventSink?) {
+                        eventSink = events
+                        val filter = IntentFilter().apply {
+                            addAction(Intent.ACTION_POWER_CONNECTED)
+                            addAction(Intent.ACTION_POWER_DISCONNECTED)
+                        }
+                        registerReceiver(chargeReceiver, filter)
+                    }
+
+                    override fun onCancel(arguments: Any?) {
+                        eventSink = null
+                        unregisterReceiver(chargeReceiver)
+                    }
+                }
+            )
+    }
+}

android/gradle.properties

@@ -1,3 +1,7 @@
 org.gradle.jvmargs=-Xmx8G -XX:MaxMetaspaceSize=4G -XX:ReservedCodeCacheSize=512m -XX:+HeapDumpOnOutOfMemoryError
 android.useAndroidX=true
 android.enableJetifier=true
+# This builtInKotlin flag was added automatically by Flutter migrator
+android.builtInKotlin=false
+# This newDsl flag was added automatically by Flutter migrator
+android.newDsl=false

lib/main.dart

@@ -20,7 +20,9 @@ class MyApp extends StatelessWidget {
       title: '电池健康度',
       theme: ThemeData(
         fontFamily: 'HarmonyOS_Sans_SC',
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        colorScheme: ColorScheme.fromSeed(
+          seedColor: const Color.fromARGB(255, 255, 255, 255),
+        ),
         useMaterial3: true,
       ),
       home: const BatteryHealthPage(),

lib/pages/battery_health_page.dart

@@ -283,18 +283,23 @@ class _BatteryHealthPageState extends State<BatteryHealthPage>
           ),
           ElevatedButton(
             onPressed: () async {
-              final ctx = context;
+              // 触发关闭
-              Navigator.pop(ctx);
+              Navigator.pop(context);
+
+              // 延迟确保动画完成
+              await Future.delayed(const Duration(milliseconds: 150));
+
               final result = await _safService.requestPermission();
-              if (result.success) {
+
               if (!mounted) return;
+
+              if (result.success) {
                 setState(() {
                   _safState = SafPermissionState.authorized;
                 });
                 readBatteryCapacity();
               } else {
-                if (!mounted) return;
+                ScaffoldMessenger.of(context).showSnackBar(
-                ScaffoldMessenger.of(ctx).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();

lib/services/saf_storage_service.dart

@@ -1,65 +1,59 @@
-import 'dart:io';
 import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
 import 'package:shared_preferences/shared_preferences.dart';
-import 'package:file_picker/file_picker.dart';
 import '../models/saf_permission_state.dart';
 
-/// 使用 file_picker 实现文件夹访问
 class SafStorageService {
   static final SafStorageService _instance = SafStorageService._internal();
   factory SafStorageService() => _instance;
   SafStorageService._internal();
 
-  static const String _prefKeySafPath = 'saf_storage_path';
+  static const MethodChannel _channel = MethodChannel(
-  String? _cachedPath;
+    'com.lxh.battery_health/saf',
+  );
+  static const String _prefKeySafUri = 'saf_storage_uri';
+  String? _cachedUri;
 
+  // 🟢 初始化时从 SharedPreferences 恢复 URI
   Future<void> init() async {
+    try {
       final prefs = await SharedPreferences.getInstance();
-    _cachedPath = prefs.getString(_prefKeySafPath);
+      _cachedUri = prefs.getString(_prefKeySafUri);
       if (kDebugMode) {
-      print('[SAF] 初始化，缓存路径: $_cachedPath');
+        print('[SAF] 初始化，缓存 URI: $_cachedUri');
+      }
+    } catch (e) {
+      if (kDebugMode) {
+        print('[SAF] 初始化失败: $e');
+      }
+      _cachedUri = null;
     }
   }
 
   Future<SafPermissionState> getPermissionState() async {
-    if (_cachedPath == null || _cachedPath!.isEmpty) {
+    if (_cachedUri == null || _cachedUri!.isEmpty) {
       return SafPermissionState.unauthorized;
     }
-    try {
+    // 🟢 简化：直接返回 authorized，相信本地缓存的 URI
-      final dir = Directory(_cachedPath!);
-      if (!await dir.exists()) {
-        _clearCache();
-        return SafPermissionState.expired;
-      }
     return SafPermissionState.authorized;
-    } catch (e) {
-      _clearCache();
-      return SafPermissionState.expired;
-    }
   }
 
   Future<SafAuthorizationResult> requestPermission() async {
     try {
-      // 使用 file_picker 选择文件夹
+      final String? uriString = await _channel.invokeMethod('selectFolder');
-      String? selectedPath = await FilePicker.platform.getDirectoryPath();
 
-      if (selectedPath == null || selectedPath.isEmpty) {
+      if (uriString == null || uriString.isEmpty) {
         return SafAuthorizationResult.denied();
       }
 
-      // 验证路径是否包含 mbattery_charger（可选，提高容错）
+      _cachedUri = uriString;
-      if (!selectedPath.contains('mbattery_charger')) {
+      await _saveUri(uriString);
-        return SafAuthorizationResult.error('请选择 mbattery_charger 文件夹');
-      }
-
-      _cachedPath = selectedPath;
-      await _savePath(selectedPath);
 
       if (kDebugMode) {
-        print('[SAF] 授权成功，路径: $selectedPath');
+        print('[SAF] 授权成功，URI: $uriString');
       }
 
-      return SafAuthorizationResult.success(selectedPath);
+      return SafAuthorizationResult.success(uriString);
     } catch (e) {
       if (kDebugMode) {
         print('[SAF] 授权失败: $e');
@@ -72,8 +66,11 @@ class SafStorageService {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return false;
     try {
-      final file = File('${_cachedPath!}/$fileName');
+      final files = await _channel.invokeMethod('listFiles');
-      return await file.exists();
+      if (files is List) {
+        return files.contains(fileName);
+      }
+      return false;
     } catch (e) {
       return false;
     }
@@ -83,9 +80,11 @@ class SafStorageService {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return [];
     try {
-      final file = File('${_cachedPath!}/$fileName');
+      final String? content = await _channel.invokeMethod('readLogFile', {
-      if (!await file.exists()) return [];
+        'fileName': fileName,
-      return await file.readAsLines();
+      });
+      if (content == null || content.isEmpty) return [];
+      return content.split('\n');
     } catch (e) {
       if (kDebugMode) {
         print('[SAF] 读取文件失败: $e');
@@ -98,13 +97,11 @@ class SafStorageService {
     final state = await getPermissionState();
     if (state != SafPermissionState.authorized) return [];
     try {
-      final dir = Directory(_cachedPath!);
+      final result = await _channel.invokeMethod('listFiles');
-      if (!await dir.exists()) return [];
+      if (result is List) {
-      final entities = await dir.list().toList();
+        return result.cast<String>();
-      return entities
+      }
-          .whereType<File>()
+      return [];
-          .map((e) => e.path.split(Platform.pathSeparator).last)
-          .toList();
     } catch (e) {
       if (kDebugMode) {
         print('[SAF] 列出文件失败: $e');
@@ -119,18 +116,30 @@ class SafStorageService {
   }
 
   void _clearCache() {
-    _cachedPath = null;
+    _cachedUri = null;
-    _savePath(null);
+    _saveUri(null);
   }
 
-  Future<void> _savePath(String? path) async {
+  Future<void> _saveUri(String? uri) async {
+    try {
       final prefs = await SharedPreferences.getInstance();
-    if (path != null && path.isNotEmpty) {
+      if (uri != null && uri.isNotEmpty) {
-      await prefs.setString(_prefKeySafPath, path);
+        await prefs.setString(_prefKeySafUri, uri);
+        if (kDebugMode) {
+          print('[SAF] 保存 URI 成功: $uri');
+        }
       } else {
-      await prefs.remove(_prefKeySafPath);
+        await prefs.remove(_prefKeySafUri);
+        if (kDebugMode) {
+          print('[SAF] 清除 URI');
+        }
+      }
+    } catch (e) {
+      if (kDebugMode) {
+        print('[SAF] 保存 URI 失败: $e');
+      }
     }
   }
 
-  String? get cachedPath => _cachedPath;
+  String? get cachedUri => _cachedUri;
 }

pubspec.lock

@@ -113,14 +113,6 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "7.0.1"
-  file_picker:
-    dependency: "direct main"
-    description:
-      name: file_picker
-      sha256: "1bbf65dd997458a08b531042ec3794112a6c39c07c37ff22113d2e7e4f81d4e4"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "6.2.1"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -134,14 +126,6 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "5.0.0"
-  flutter_plugin_android_lifecycle:
-    dependency: transitive
-    description:
-      name: flutter_plugin_android_lifecycle
-      sha256: "3854fe5e3bff0b113c658f260b90c95dea17c92db0f2addeac2e343dd9969785"
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "2.0.35"
   flutter_svg:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: 'none' # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.3.0-dev.2
+version: 1.3.0-dev.4
 
 environment:
   sdk: ^3.9.2
@@ -38,7 +38,7 @@ dependencies:
   path: ^1.9.0
   flutter_svg: ^2.0.10+1
   shared_preferences: ^2.2.0
-  file_picker: ^6.0.0
+
 
   # The following adds the Cupertino Icons font to your application.
   # Use with the CupertinoIcons class for iOS style icons.