diff --git a/lib/basic/config/AndroidDisplayMode.dart b/lib/basic/config/AndroidDisplayMode.dart
index f9fca1e..d6d4134 100644
--- a/lib/basic/config/AndroidDisplayMode.dart
+++ b/lib/basic/config/AndroidDisplayMode.dart
@@ -8,14 +8,13 @@ import 'package:pikapi/basic/Method.dart';
 import '../Common.dart';
 
 const _propertyName = "androidDisplayMode";
-
-List<String> modes = [];
+List<String> _modes = [];
 String _androidDisplayMode = "";
 
 Future initAndroidDisplayMode() async {
   if (Platform.isAndroid) {
     _androidDisplayMode = await method.loadProperty(_propertyName, "");
-    modes = await method.loadAndroidModes();
+    _modes = await method.loadAndroidModes();
     await _changeMode();
   }
 }
@@ -24,14 +23,10 @@ Future _changeMode() async {
   await method.setAndroidMode(_androidDisplayMode);
 }
 
-String androidDisplayModeName() {
-  return _androidDisplayMode;
-}
-
-Future<void> chooseAndroidDisplayMode(BuildContext context) async {
+Future<void> _chooseAndroidDisplayMode(BuildContext context) async {
   if (Platform.isAndroid) {
     List<String> list = [""];
-    list.addAll(modes);
+    list.addAll(_modes);
     String? result = await chooseListDialog<String>(context, "安卓屏幕刷新率", list);
     if (result != null) {
       await method.saveProperty(_propertyName, "$result");
@@ -47,9 +42,9 @@ Widget androidDisplayModeSetting() {
       builder: (BuildContext context, void Function(void Function()) setState) {
         return ListTile(
           title: Text("屏幕刷新率(安卓)"),
-          subtitle: Text(androidDisplayModeName()),
+          subtitle: Text(_androidDisplayMode),
           onTap: () async {
-            await chooseAndroidDisplayMode(context);
+            await _chooseAndroidDisplayMode(context);
             setState(() {});
           },
         );
diff --git a/lib/basic/config/AndroidSecureFlag.dart b/lib/basic/config/AndroidSecureFlag.dart
index 1a675bc..f9dfba1 100644
--- a/lib/basic/config/AndroidSecureFlag.dart
+++ b/lib/basic/config/AndroidSecureFlag.dart
@@ -7,32 +7,28 @@ import 'package:flutter/material.dart';
 import '../Common.dart';
 import '../Method.dart';
 
-const propertyName = "androidSecureFlag";
+const _propertyName = "androidSecureFlag";
 
-late bool androidSecureFlag;
+late bool _androidSecureFlag;
 
 Future<void> initAndroidSecureFlag() async {
   if (Platform.isAndroid) {
-    androidSecureFlag =
-        (await method.loadProperty(propertyName, "false")) == "true";
-    if (androidSecureFlag) {
+    _androidSecureFlag =
+        (await method.loadProperty(_propertyName, "false")) == "true";
+    if (_androidSecureFlag) {
       await method.androidSecureFlag(true);
     }
   }
 }
 
-String androidSecureFlagName() {
-  return androidSecureFlag ? "是" : "否";
-}
-
-Future<void> chooseAndroidSecureFlag(BuildContext context) async {
+Future<void> _chooseAndroidSecureFlag(BuildContext context) async {
   String? result =
       await chooseListDialog<String>(context, "禁止截图/禁止显示在任务视图", ["是", "否"]);
   if (result != null) {
     var target = result == "是";
-    await method.saveProperty(propertyName, "$target");
-    androidSecureFlag = target;
-    await method.androidSecureFlag(androidSecureFlag);
+    await method.saveProperty(_propertyName, "$target");
+    _androidSecureFlag = target;
+    await method.androidSecureFlag(_androidSecureFlag);
   }
 }
 
@@ -42,9 +38,9 @@ Widget androidSecureFlagSetting() {
         (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
           title: Text("禁止截图/禁止显示在任务视图(仅安卓)"),
-          subtitle: Text(androidSecureFlagName()),
+          subtitle: Text(_androidSecureFlag ? "是" : "否"),
           onTap: () async {
-            await chooseAndroidSecureFlag(context);
+            await _chooseAndroidSecureFlag(context);
             setState(() {});
           });
     });
diff --git a/lib/basic/config/AutoClean.dart b/lib/basic/config/AutoClean.dart
index 5d15813..a990e52 100644
--- a/lib/basic/config/AutoClean.dart
+++ b/lib/basic/config/AutoClean.dart
@@ -1,9 +1,16 @@
 import 'package:flutter/material.dart';
 import 'package:pikapi/basic/Method.dart';
 
+
+const _autoCleanMap = {
+  "一个月前": "${3600 * 24 * 30}",
+  "一周前": "${3600 * 24 * 7}",
+  "一天前": "${3600 * 24 * 1}",
+  "不自动清理": "${0}",
+};
 late String _autoCleanSec;
 
-Future<dynamic> autoClean() async {
+Future<dynamic> initAutoClean() async {
   _autoCleanSec =
       await method.loadProperty("autoCleanSec", "${3600 * 24 * 30}");
   if ("0" != _autoCleanSec) {
@@ -11,14 +18,7 @@ Future<dynamic> autoClean() async {
   }
 }
 
-var _autoCleanMap = {
-  "一个月前": "${3600 * 24 * 30}",
-  "一周前": "${3600 * 24 * 7}",
-  "一天前": "${3600 * 24 * 1}",
-  "不自动清理": "${0}",
-};
-
-String currentAutoCleanSec() {
+String _currentAutoCleanSec() {
   for (var value in _autoCleanMap.entries) {
     if (value.value == _autoCleanSec) {
       return value.key;
@@ -27,7 +27,7 @@ String currentAutoCleanSec() {
   return "";
 }
 
-Future<void> chooseAutoCleanSec(BuildContext context) async {
+Future<void> _chooseAutoCleanSec(BuildContext context) async {
   String? choose = await showDialog<String>(
     context: context,
     builder: (BuildContext context) {
@@ -58,9 +58,9 @@ Widget autoCleanSecSetting() {
     builder: (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
         title: Text("自动清理缓存"),
-        subtitle: Text(currentAutoCleanSec()),
+        subtitle: Text(_currentAutoCleanSec()),
         onTap: () async {
-          await chooseAutoCleanSec(context);
+          await _chooseAutoCleanSec(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/AutoFullScreen.dart b/lib/basic/config/AutoFullScreen.dart
index cf73cee..22fde67 100644
--- a/lib/basic/config/AutoFullScreen.dart
+++ b/lib/basic/config/AutoFullScreen.dart
@@ -5,24 +5,19 @@ import 'package:flutter/material.dart';
 import '../Common.dart';
 import '../Method.dart';
 
-late bool _autoFullScreen;
-
-bool currentAutoFullScreen() {
-  return _autoFullScreen;
-}
-
 const _propertyName = "autoFullScreen";
+late bool _autoFullScreen;
 
 Future<void> initAutoFullScreen() async {
   _autoFullScreen =
       (await method.loadProperty(_propertyName, "false")) == "true";
 }
 
-String autoFullScreenName() {
-  return _autoFullScreen ? "是" : "否";
+bool currentAutoFullScreen() {
+  return _autoFullScreen;
 }
 
-Future<void> chooseAutoFullScreen(BuildContext context) async {
+Future<void> _chooseAutoFullScreen(BuildContext context) async {
   String? result =
       await chooseListDialog<String>(context, "进入阅读器自动全屏", ["是", "否"]);
   if (result != null) {
@@ -37,9 +32,9 @@ Widget autoFullScreenSetting() {
     builder: (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
         title: Text("进入阅读器自动全屏"),
-        subtitle: Text(autoFullScreenName()),
+        subtitle: Text(_autoFullScreen ? "是" : "否"),
         onTap: () async {
-          await chooseAutoFullScreen(context);
+          await _chooseAutoFullScreen(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/ChooserRoot.dart b/lib/basic/config/ChooserRoot.dart
index 2f132ba..6168a7a 100644
--- a/lib/basic/config/ChooserRoot.dart
+++ b/lib/basic/config/ChooserRoot.dart
@@ -10,7 +10,7 @@ import '../Method.dart';
 const _propertyName = "chooserRoot";
 late String _chooserRoot;
 
-Future<String?> initChooserRoot() async {
+Future<dynamic> initChooserRoot() async {
   _chooserRoot = await method.loadProperty(_propertyName, "");
 }
 
@@ -34,7 +34,7 @@ String currentChooserRoot() {
   return _chooserRoot;
 }
 
-Future<dynamic> inputChooserRoot(BuildContext context) async {
+Future<dynamic> _inputChooserRoot(BuildContext context) async {
   String? input = await displayTextInputDialog(
     context,
     '文件夹选择器根路径',
@@ -55,7 +55,7 @@ Widget chooserRootSetting() {
         title: Text("文件夹选择器默认路径"),
         subtitle: Text(currentChooserRoot()),
         onTap: () async {
-          await inputChooserRoot(context);
+          await _inputChooserRoot(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/ContentFailedReloadAction.dart b/lib/basic/config/ContentFailedReloadAction.dart
index 85fbbd5..4d08517 100644
--- a/lib/basic/config/ContentFailedReloadAction.dart
+++ b/lib/basic/config/ContentFailedReloadAction.dart
@@ -10,9 +10,8 @@ enum ContentFailedReloadAction {
   TOUCH_LOADER,
 }
 
-late ContentFailedReloadAction contentFailedReloadAction;
-
 const _propertyName = "contentFailedReloadAction";
+late ContentFailedReloadAction contentFailedReloadAction;
 
 Future<void> initContentFailedReloadAction() async {
   contentFailedReloadAction =
@@ -31,13 +30,13 @@ ContentFailedReloadAction _contentFailedReloadActionFromString(String string) {
   return ContentFailedReloadAction.PULL_DOWN;
 }
 
-Map<String, ContentFailedReloadAction> contentFailedReloadActionMap = {
+Map<String, ContentFailedReloadAction> _contentFailedReloadActionMap = {
   "下拉刷新": ContentFailedReloadAction.PULL_DOWN,
   "点击屏幕刷新": ContentFailedReloadAction.TOUCH_LOADER,
 };
 
-String currentContentFailedReloadActionName() {
-  for (var e in contentFailedReloadActionMap.entries) {
+String _currentContentFailedReloadActionName() {
+  for (var e in _contentFailedReloadActionMap.entries) {
     if (e.value == contentFailedReloadAction) {
       return e.key;
     }
@@ -45,25 +44,27 @@ String currentContentFailedReloadActionName() {
   return '';
 }
 
-Future<void> chooseContentFailedReloadAction(BuildContext context) async {
+Future<void> _chooseContentFailedReloadAction(BuildContext context) async {
   ContentFailedReloadAction? result =
       await chooseMapDialog<ContentFailedReloadAction>(
-          context, contentFailedReloadActionMap, "选择页面加载失败刷新的方式");
+          context, _contentFailedReloadActionMap, "选择页面加载失败刷新的方式");
   if (result != null) {
     await method.saveProperty(_propertyName, result.toString());
     contentFailedReloadAction = result;
   }
 }
 
-Widget contentFailedReloadActionSetting(){
-  return StatefulBuilder(builder: (BuildContext context, void Function(void Function()) setState) {
-    return ListTile(
-      title: Text("加载失败时"),
-      subtitle: Text(currentContentFailedReloadActionName()),
-      onTap: () async {
-        await chooseContentFailedReloadAction(context);
-        setState(() {});
-      },
-    );
-  },);
-}
\ No newline at end of file
+Widget contentFailedReloadActionSetting() {
+  return StatefulBuilder(
+    builder: (BuildContext context, void Function(void Function()) setState) {
+      return ListTile(
+        title: Text("加载失败时"),
+        subtitle: Text(_currentContentFailedReloadActionName()),
+        onTap: () async {
+          await _chooseContentFailedReloadAction(context);
+          setState(() {});
+        },
+      );
+    },
+  );
+}
diff --git a/lib/basic/config/DownloadAndExportPath.dart b/lib/basic/config/DownloadAndExportPath.dart
index 4aab2c4..140e498 100644
--- a/lib/basic/config/DownloadAndExportPath.dart
+++ b/lib/basic/config/DownloadAndExportPath.dart
@@ -1,3 +1,5 @@
+/// 下载的同时导出到文件系统
+
 import 'dart:io';
 
 import 'package:flutter/cupertino.dart';
diff --git a/lib/basic/config/DownloadThreadCount.dart b/lib/basic/config/DownloadThreadCount.dart
index bdfc60f..41689f3 100644
--- a/lib/basic/config/DownloadThreadCount.dart
+++ b/lib/basic/config/DownloadThreadCount.dart
@@ -1,3 +1,5 @@
+/// 多线程下载并发数
+
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/material.dart';
 import 'package:pikapi/basic/Common.dart';
diff --git a/lib/basic/config/FullScreenAction.dart b/lib/basic/config/FullScreenAction.dart
index 9f45429..6bdce7c 100644
--- a/lib/basic/config/FullScreenAction.dart
+++ b/lib/basic/config/FullScreenAction.dart
@@ -10,17 +10,25 @@ enum FullScreenAction {
   TOUCH_ONCE,
 }
 
-late FullScreenAction fullScreenAction;
+Map<String, FullScreenAction> _fullScreenActionMap = {
+  "使用控制器": FullScreenAction.CONTROLLER,
+  "点击屏幕一次": FullScreenAction.TOUCH_ONCE,
+};
 
 const _propertyName = "fullScreenAction";
+late FullScreenAction _fullScreenAction;
 
 Future<void> initFullScreenAction() async {
-  fullScreenAction = _fullScreenActionFromString(await method.loadProperty(
+  _fullScreenAction = _fullScreenActionFromString(await method.loadProperty(
     _propertyName,
     FullScreenAction.CONTROLLER.toString(),
   ));
 }
 
+FullScreenAction currentFullScreenAction() {
+  return _fullScreenAction;
+}
+
 FullScreenAction _fullScreenActionFromString(String string) {
   for (var value in FullScreenAction.values) {
     if (string == value.toString()) {
@@ -30,26 +38,21 @@ FullScreenAction _fullScreenActionFromString(String string) {
   return FullScreenAction.CONTROLLER;
 }
 
-Map<String, FullScreenAction> fullScreenActionMap = {
-  "使用控制器": FullScreenAction.CONTROLLER,
-  "点击屏幕一次": FullScreenAction.TOUCH_ONCE,
-};
-
-String currentFullScreenActionName() {
-  for (var e in fullScreenActionMap.entries) {
-    if (e.value == fullScreenAction) {
+String _currentFullScreenActionName() {
+  for (var e in _fullScreenActionMap.entries) {
+    if (e.value == _fullScreenAction) {
       return e.key;
     }
   }
   return '';
 }
 
-Future<void> chooseFullScreenAction(BuildContext context) async {
+Future<void> _chooseFullScreenAction(BuildContext context) async {
   FullScreenAction? result = await chooseMapDialog<FullScreenAction>(
-      context, fullScreenActionMap, "选择进入全屏的方式");
+      context, _fullScreenActionMap, "选择进入全屏的方式");
   if (result != null) {
     await method.saveProperty(_propertyName, result.toString());
-    fullScreenAction = result;
+    _fullScreenAction = result;
   }
 }
 
@@ -58,9 +61,9 @@ Widget fullScreenActionSetting() {
     builder: (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
         title: Text("进入全屏的方式"),
-        subtitle: Text(currentFullScreenActionName()),
+        subtitle: Text(_currentFullScreenActionName()),
         onTap: () async {
-          await chooseFullScreenAction(context);
+          await _chooseFullScreenAction(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/FullScreenUI.dart b/lib/basic/config/FullScreenUI.dart
index 588b9e4..4d2f9b2 100644
--- a/lib/basic/config/FullScreenUI.dart
+++ b/lib/basic/config/FullScreenUI.dart
@@ -12,9 +12,9 @@ enum FullScreenUI {
   ALL,
 }
 
+const _propertyName = "fullScreenUI";
 late FullScreenUI fullScreenUI;
 
-const _propertyName = "fullScreenUI";
 
 Future<void> initFullScreenUI() async {
   fullScreenUI = _fullScreenUIFromString(await method.loadProperty(
diff --git a/lib/basic/config/KeyboardController.dart b/lib/basic/config/KeyboardController.dart
index fba7225..409e163 100644
--- a/lib/basic/config/KeyboardController.dart
+++ b/lib/basic/config/KeyboardController.dart
@@ -16,11 +16,7 @@ Future<void> initKeyboardController() async {
       (await method.loadProperty(_propertyName, "false")) == "true";
 }
 
-String keyboardControllerName() {
-  return keyboardController ? "是" : "否";
-}
-
-Future<void> chooseKeyboardController(BuildContext context) async {
+Future<void> _chooseKeyboardController(BuildContext context) async {
   String? result =
       await chooseListDialog<String>(context, "键盘控制翻页", ["是", "否"]);
   if (result != null) {
@@ -36,9 +32,9 @@ Widget keyboardControllerSetting() {
       builder: (BuildContext context, void Function(void Function()) setState) {
         return ListTile(
           title: Text("阅读器键盘翻页(仅PC)"),
-          subtitle: Text(keyboardControllerName()),
+          subtitle: Text(keyboardController ? "是" : "否"),
           onTap: () async {
-            await chooseKeyboardController(context);
+            await _chooseKeyboardController(context);
             setState(() {});
           },
         );
diff --git a/lib/basic/config/ListLayout.dart b/lib/basic/config/ListLayout.dart
index 9453cd3..6e75a58 100644
--- a/lib/basic/config/ListLayout.dart
+++ b/lib/basic/config/ListLayout.dart
@@ -11,8 +11,17 @@ enum ListLayout {
   COVER_AND_TITLE,
 }
 
+const Map<String, ListLayout> _listLayoutMap = {
+  '详情': ListLayout.INFO_CARD,
+  '封面': ListLayout.ONLY_IMAGE,
+  '封面+标题': ListLayout.COVER_AND_TITLE,
+};
+
+const _propertyName = "listLayout";
 late ListLayout currentLayout;
 
+var listLayoutEvent = Event<EventArgs>();
+
 Future<void> initListLayout() async {
   currentLayout = _listLayoutFromString(await method.loadProperty(
     _propertyName,
@@ -20,16 +29,6 @@ Future<void> initListLayout() async {
   ));
 }
 
-const _propertyName = "listLayout";
-
-var listLayoutEvent = Event<EventArgs>();
-
-const Map<String, ListLayout> _listLayoutMap = {
-  '详情': ListLayout.INFO_CARD,
-  '封面': ListLayout.ONLY_IMAGE,
-  '封面+标题': ListLayout.COVER_AND_TITLE,
-};
-
 ListLayout _listLayoutFromString(String layoutString) {
   for (var value in ListLayout.values) {
     if (layoutString == value.toString()) {
@@ -39,7 +38,7 @@ ListLayout _listLayoutFromString(String layoutString) {
   return ListLayout.INFO_CARD;
 }
 
-void chooseListLayout(BuildContext context) async {
+void _chooseListLayout(BuildContext context) async {
   ListLayout? layout = await chooseMapDialog(context, _listLayoutMap, '请选择布局');
   if (layout != null) {
     await method.saveProperty(_propertyName, layout.toString());
@@ -48,10 +47,9 @@ void chooseListLayout(BuildContext context) async {
   }
 }
 
-IconButton chooseLayoutAction(BuildContext context) => IconButton(
+IconButton chooseLayoutActionButton(BuildContext context) => IconButton(
       onPressed: () {
-        chooseListLayout(context);
+        _chooseListLayout(context);
       },
       icon: Icon(Icons.view_quilt),
     );
-
diff --git a/lib/basic/config/PagerAction.dart b/lib/basic/config/PagerAction.dart
index b377859..5ff136f 100644
--- a/lib/basic/config/PagerAction.dart
+++ b/lib/basic/config/PagerAction.dart
@@ -10,15 +10,23 @@ enum PagerAction {
   STREAM,
 }
 
-late PagerAction currentPagerAction;
+Map<String, PagerAction> _pagerActionMap = {
+  "使用按钮": PagerAction.CONTROLLER,
+  "瀑布流": PagerAction.STREAM,
+};
 
 const _propertyName = "pagerAction";
+late PagerAction _pagerAction;
 
 Future<void> initPagerAction() async {
-  currentPagerAction = _pagerActionFromString(await method.loadProperty(
+  _pagerAction = _pagerActionFromString(await method.loadProperty(
       _propertyName, PagerAction.CONTROLLER.toString()));
 }
 
+PagerAction currentPagerAction() {
+  return _pagerAction;
+}
+
 PagerAction _pagerActionFromString(String string) {
   for (var value in PagerAction.values) {
     if (string == value.toString()) {
@@ -28,26 +36,21 @@ PagerAction _pagerActionFromString(String string) {
   return PagerAction.CONTROLLER;
 }
 
-Map<String, PagerAction> _pagerActionMap = {
-  "使用按钮": PagerAction.CONTROLLER,
-  "瀑布流": PagerAction.STREAM,
-};
-
-String currentPagerActionName() {
+String _currentPagerActionName() {
   for (var e in _pagerActionMap.entries) {
-    if (e.value == currentPagerAction) {
+    if (e.value == _pagerAction) {
       return e.key;
     }
   }
   return '';
 }
 
-Future<void> choosePagerAction(BuildContext context) async {
+Future<void> _choosePagerAction(BuildContext context) async {
   PagerAction? result =
       await chooseMapDialog<PagerAction>(context, _pagerActionMap, "选择列表页加载方式");
   if (result != null) {
     await method.saveProperty(_propertyName, result.toString());
-    currentPagerAction = result;
+    _pagerAction = result;
   }
 }
 
@@ -56,9 +59,9 @@ Widget pagerActionSetting() {
     builder: (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
         title: Text("列表页加载方式"),
-        subtitle: Text(currentPagerActionName()),
+        subtitle: Text(_currentPagerActionName()),
         onTap: () async {
-          await choosePagerAction(context);
+          await _choosePagerAction(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/Quality.dart b/lib/basic/config/Quality.dart
index 6c49546..5e06079 100644
--- a/lib/basic/config/Quality.dart
+++ b/lib/basic/config/Quality.dart
@@ -20,7 +20,13 @@ var _qualities = {
   _LabelHigh: ImageQualityHigh,
 };
 
+const _propertyName = "quality";
 late String _currentQualityCode;
+const _defaultValue = _ImageQualityOriginal;
+
+Future<void> initQuality() async {
+  _currentQualityCode = await method.loadProperty(_propertyName, _defaultValue);
+}
 
 String currentQualityCode() {
   return _currentQualityCode;
@@ -35,14 +41,7 @@ String _currentQualityName() {
   return '';
 }
 
-const _propertyName = "quality";
-const _defaultValue = _ImageQualityOriginal;
-
-Future<void> initQuality() async {
-  _currentQualityCode = await method.loadProperty(_propertyName, _defaultValue);
-}
-
-Future<void> chooseQuality(BuildContext context) async {
+Future<void> _chooseQuality(BuildContext context) async {
   String? code = await showDialog<String>(
     context: context,
     builder: (BuildContext context) {
@@ -74,7 +73,7 @@ Widget qualitySetting() {
         title: Text("浏览时的图片质量"),
         subtitle: Text(_currentQualityName()),
         onTap: () async {
-          await chooseQuality(context);
+          await _chooseQuality(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/ReaderDirection.dart b/lib/basic/config/ReaderDirection.dart
index 00a6eb0..e71a594 100644
--- a/lib/basic/config/ReaderDirection.dart
+++ b/lib/basic/config/ReaderDirection.dart
@@ -9,21 +9,20 @@ enum ReaderDirection {
   RIGHT_TO_LEFT,
 }
 
-late ReaderDirection gReaderDirection;
+const _types = {
+  '从上到下': ReaderDirection.TOP_TO_BOTTOM,
+  '从左到右': ReaderDirection.LEFT_TO_RIGHT,
+  '从右到左': ReaderDirection.RIGHT_TO_LEFT,
+};
 
 const _propertyName = "readerDirection";
+late ReaderDirection gReaderDirection;
 
 Future<void> initReaderDirection() async {
   gReaderDirection = _pagerDirectionFromString(await method.loadProperty(
       _propertyName, ReaderDirection.TOP_TO_BOTTOM.toString()));
 }
 
-var _types = {
-  '从上到下': ReaderDirection.TOP_TO_BOTTOM,
-  '从左到右': ReaderDirection.LEFT_TO_RIGHT,
-  '从右到左': ReaderDirection.RIGHT_TO_LEFT,
-};
-
 ReaderDirection _pagerDirectionFromString(String pagerDirectionString) {
   for (var value in ReaderDirection.values) {
     if (pagerDirectionString == value.toString()) {
@@ -33,7 +32,7 @@ ReaderDirection _pagerDirectionFromString(String pagerDirectionString) {
   return ReaderDirection.TOP_TO_BOTTOM;
 }
 
-String currentReaderDirectionName() {
+String _currentReaderDirectionName() {
   for (var e in _types.entries) {
     if (e.value == gReaderDirection) {
       return e.key;
@@ -42,6 +41,7 @@ String currentReaderDirectionName() {
   return '';
 }
 
+/// ?? to ActionButton And Event ??
 Future<void> choosePagerDirection(BuildContext buildContext) async {
   ReaderDirection? choose = await showDialog<ReaderDirection>(
     context: buildContext,
@@ -70,7 +70,7 @@ Widget readerDirectionSetting() {
     builder: (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
         title: Text("阅读器方向"),
-        subtitle: Text(currentReaderDirectionName()),
+        subtitle: Text(_currentReaderDirectionName()),
         onTap: () async {
           await choosePagerDirection(context);
           setState(() {});
diff --git a/lib/basic/config/ReaderType.dart b/lib/basic/config/ReaderType.dart
index 5797713..2feabeb 100644
--- a/lib/basic/config/ReaderType.dart
+++ b/lib/basic/config/ReaderType.dart
@@ -1,30 +1,32 @@
 /// 阅读器的类型
 
 import 'package:flutter/material.dart';
-
 import '../Method.dart';
 
-late ReaderType gReaderType;
-
-const _propertyName = "readerType";
-
-Future<dynamic> initReaderType() async {
-  gReaderType = _readerTypeFromString(
-      await method.loadProperty(_propertyName, ReaderType.WEB_TOON.toString()));
-}
-
 enum ReaderType {
   WEB_TOON,
   WEB_TOON_ZOOM,
   GALLERY,
 }
 
-var _types = {
+const _types = {
   'WebToon (默认)': ReaderType.WEB_TOON,
   'WebToon + 双击放大': ReaderType.WEB_TOON_ZOOM,
   '相册': ReaderType.GALLERY,
 };
 
+const _propertyName = "readerType";
+late ReaderType _readerType;
+
+Future<dynamic> initReaderType() async {
+  _readerType = _readerTypeFromString(
+      await method.loadProperty(_propertyName, ReaderType.WEB_TOON.toString()));
+}
+
+ReaderType currentReaderType() {
+  return _readerType;
+}
+
 ReaderType _readerTypeFromString(String pagerTypeString) {
   for (var value in ReaderType.values) {
     if (pagerTypeString == value.toString()) {
@@ -36,7 +38,7 @@ ReaderType _readerTypeFromString(String pagerTypeString) {
 
 String currentReaderTypeName() {
   for (var e in _types.entries) {
-    if (e.value == gReaderType) {
+    if (e.value == _readerType) {
       return e.key;
     }
   }
@@ -62,7 +64,7 @@ Future<void> choosePagerType(BuildContext buildContext) async {
   );
   if (t != null) {
     await method.saveProperty(_propertyName, t.toString());
-    gReaderType = t;
+    _readerType = t;
   }
 }
 
diff --git a/lib/basic/config/ShadowCategories.dart b/lib/basic/config/ShadowCategories.dart
index 4470cbe..f5235ec 100644
--- a/lib/basic/config/ShadowCategories.dart
+++ b/lib/basic/config/ShadowCategories.dart
@@ -10,12 +10,10 @@ import 'package:multi_select_flutter/multi_select_flutter.dart';
 import '../Method.dart';
 import '../store/Categories.dart';
 
-late List<String> shadowCategories;
-var shadowCategoriesEvent = Event<EventArgs>();
-
-// mapper
-
 const _propertyName = "shadowCategories";
+late List<String> shadowCategories;
+
+var shadowCategoriesEvent = Event<EventArgs>();
 
 /// 获取封印的类型
 Future<List<String>> _loadShadowCategories() async {
diff --git a/lib/basic/config/TimeOffsetHour.dart b/lib/basic/config/TimeOffsetHour.dart
index 77a6431..6ff1579 100644
--- a/lib/basic/config/TimeOffsetHour.dart
+++ b/lib/basic/config/TimeOffsetHour.dart
@@ -5,19 +5,18 @@ import 'package:flutter/material.dart';
 import '../Common.dart';
 import '../Method.dart';
 
-int _timeOffsetHour = 8;
-
-int currentTimeOffsetHour() {
-  return _timeOffsetHour;
-}
-
 const _propertyName = "timeOffsetHour";
+int _timeOffsetHour = 8;
 
 Future<void> initTimeZone() async {
   _timeOffsetHour = int.parse(await method.loadProperty(_propertyName, "8"));
 }
 
-Future<void> chooseTimeZone(BuildContext context) async {
+int currentTimeOffsetHour() {
+  return _timeOffsetHour;
+}
+
+Future<void> _chooseTimeZone(BuildContext context) async {
   List<String> timeZones = [];
   for (var i = -12; i <= 12; i++) {
     var str = i.toString();
@@ -47,7 +46,7 @@ Widget timeZoneSetting() {
         title: Text("时区"),
         subtitle: Text(c),
         onTap: () async {
-          await chooseTimeZone(context);
+          await _chooseTimeZone(context);
           setState(() {});
         },
       );
diff --git a/lib/basic/config/VolumeController.dart b/lib/basic/config/VolumeController.dart
index 9ab81c4..bb016fb 100644
--- a/lib/basic/config/VolumeController.dart
+++ b/lib/basic/config/VolumeController.dart
@@ -7,25 +7,20 @@ import 'package:flutter/material.dart';
 import '../Common.dart';
 import '../Method.dart';
 
-const propertyName = "volumeController";
-
+const _propertyName = "volumeController";
 late bool volumeController;
 
 Future<void> initVolumeController() async {
   volumeController =
-      (await method.loadProperty(propertyName, "false")) == "true";
+      (await method.loadProperty(_propertyName, "false")) == "true";
 }
 
-String volumeControllerName() {
-  return volumeController ? "是" : "否";
-}
-
-Future<void> chooseVolumeController(BuildContext context) async {
+Future<void> _chooseVolumeController(BuildContext context) async {
   String? result =
       await chooseListDialog<String>(context, "音量键控制翻页", ["是", "否"]);
   if (result != null) {
     var target = result == "是";
-    await method.saveProperty(propertyName, "$target");
+    await method.saveProperty(_propertyName, "$target");
     volumeController = target;
   }
 }
@@ -36,9 +31,9 @@ Widget volumeControllerSetting() {
         (BuildContext context, void Function(void Function()) setState) {
       return ListTile(
           title: Text("阅读器音量键翻页(仅安卓)"),
-          subtitle: Text(volumeControllerName()),
+          subtitle: Text(volumeController ? "是" : "否"),
           onTap: () async {
-            await chooseVolumeController(context);
+            await _chooseVolumeController(context);
             setState(() {});
           });
     });
diff --git a/lib/screens/ComicReaderScreen.dart b/lib/screens/ComicReaderScreen.dart
index ded8116..0589735 100644
--- a/lib/screens/ComicReaderScreen.dart
+++ b/lib/screens/ComicReaderScreen.dart
@@ -18,7 +18,7 @@ class ComicReaderScreen extends StatefulWidget {
   final List<Ep> epList;
   final currentEpOrder;
   final int? initPictureRank;
-  final ReaderType pagerType = gReaderType;
+  final ReaderType pagerType = currentReaderType();
   final ReaderDirection pagerDirection = gReaderDirection;
   late final bool autoFullScreen;
 
@@ -149,7 +149,7 @@ class _ComicReaderScreenState extends State<ComicReaderScreen> {
                 IconButton(
                   onPressed: () async {
                     await choosePagerType(context);
-                    if (widget.pagerType != gReaderType) {
+                    if (widget.pagerType != currentReaderType()) {
                       _reloadReader();
                     }
                   },
diff --git a/lib/screens/ComicsScreen.dart b/lib/screens/ComicsScreen.dart
index 3a856b4..59b67a7 100644
--- a/lib/screens/ComicsScreen.dart
+++ b/lib/screens/ComicsScreen.dart
@@ -51,7 +51,7 @@ class _ComicsScreenState extends State<ComicsScreen> {
         title: new Text(categoryTitle(widget.category)),
         actions: [
           shadowCategoriesActionButton(context),
-          chooseLayoutAction(context),
+          chooseLayoutActionButton(context),
           _chooseCategoryAction(),
           _categorySearchBar.getSearchAction(context),
         ],
@@ -125,7 +125,7 @@ class _ComicsScreenState extends State<ComicsScreen> {
         title: Text(title),
         actions: [
           shadowCategoriesActionButton(context),
-          chooseLayoutAction(context),
+          chooseLayoutActionButton(context),
           _chooseCategoryAction(),
         ],
       );
diff --git a/lib/screens/DownloadReaderScreen.dart b/lib/screens/DownloadReaderScreen.dart
index 844ff38..76c895a 100644
--- a/lib/screens/DownloadReaderScreen.dart
+++ b/lib/screens/DownloadReaderScreen.dart
@@ -17,7 +17,7 @@ class DownloadReaderScreen extends StatefulWidget {
   final List<DownloadEp> epList;
   final int currentEpOrder;
   final int? initPictureRank;
-  final ReaderType pagerType = gReaderType;
+  final ReaderType pagerType = currentReaderType();
   final ReaderDirection pagerDirection = gReaderDirection;
   late final bool autoFullScreen;
 
@@ -118,7 +118,6 @@ class _DownloadReaderScreenState extends State<DownloadReaderScreen> {
     super.dispose();
   }
 
-
   @override
   Widget build(BuildContext context) {
     return readerKeyboardHolder(_build(context));
@@ -143,7 +142,7 @@ class _DownloadReaderScreenState extends State<DownloadReaderScreen> {
                 IconButton(
                   onPressed: () async {
                     await choosePagerType(context);
-                    if (widget.pagerType != gReaderType) {
+                    if (widget.pagerType != currentReaderType()) {
                       _reloadReader();
                     }
                   },
diff --git a/lib/screens/InitScreen.dart b/lib/screens/InitScreen.dart
index ee42a25..95ddfdc 100644
--- a/lib/screens/InitScreen.dart
+++ b/lib/screens/InitScreen.dart
@@ -43,7 +43,7 @@ class _InitScreenState extends State<InitScreen> {
   Future<dynamic> _init() async {
     // 初始化配置文件
     await initPlatform(); // 必须第一个初始化, 加载设备信息
-    await autoClean();
+    await initAutoClean();
     await initAddress();
     await initProxy();
     await initQuality();
diff --git a/lib/screens/RandomComicsScreen.dart b/lib/screens/RandomComicsScreen.dart
index acf5fad..a41e3fe 100644
--- a/lib/screens/RandomComicsScreen.dart
+++ b/lib/screens/RandomComicsScreen.dart
@@ -28,7 +28,7 @@ class _RandomComicsScreenState extends State<RandomComicsScreen> {
         title: Text('随机本子'),
         actions: [
           shadowCategoriesActionButton(context),
-          chooseLayoutAction(context),
+          chooseLayoutActionButton(context),
         ],
       ),
       body: ComicListBuilder(_future, _reload),
diff --git a/lib/screens/RankingsScreen.dart b/lib/screens/RankingsScreen.dart
index 43861c5..eaff4fe 100644
--- a/lib/screens/RankingsScreen.dart
+++ b/lib/screens/RankingsScreen.dart
@@ -17,7 +17,7 @@ class RankingsScreen extends StatelessWidget {
         title: Text('排行榜'),
         actions: [
           shadowCategoriesActionButton(context),
-          chooseLayoutAction(context),
+          chooseLayoutActionButton(context),
         ],
       ),
       body: DefaultTabController(
diff --git a/lib/screens/SearchScreen.dart b/lib/screens/SearchScreen.dart
index 7e8c5ff..8102eb3 100644
--- a/lib/screens/SearchScreen.dart
+++ b/lib/screens/SearchScreen.dart
@@ -49,7 +49,7 @@ class _SearchScreenState extends State<SearchScreen> {
         title: Text("${categoryTitle(widget.category)} ${widget.keyword}"),
         actions: [
           shadowCategoriesActionButton(context),
-          chooseLayoutAction(context),
+          chooseLayoutActionButton(context),
           _chooseCategoryAction(),
           _searchBar.getSearchAction(context),
         ],
diff --git a/lib/screens/components/ComicPager.dart b/lib/screens/components/ComicPager.dart
index e1bd1d8..5a422e5 100644
--- a/lib/screens/components/ComicPager.dart
+++ b/lib/screens/components/ComicPager.dart
@@ -41,7 +41,7 @@ class _ComicPagerState extends State<ComicPager> {
 
   @override
   Widget build(BuildContext context) {
-    switch (currentPagerAction) {
+    switch (currentPagerAction()) {
       case PagerAction.CONTROLLER:
         return ControllerComicPager(fetchPage: widget.fetchPage);
       case PagerAction.STREAM:
diff --git a/lib/screens/components/ImageReader.dart b/lib/screens/components/ImageReader.dart
index 9905306..6df0711 100644
--- a/lib/screens/components/ImageReader.dart
+++ b/lib/screens/components/ImageReader.dart
@@ -148,7 +148,7 @@ class ImageReader extends StatelessWidget {
         reader = Container();
         break;
     }
-    switch (fullScreenAction) {
+    switch (currentFullScreenAction()) {
       case FullScreenAction.CONTROLLER:
         reader = Stack(
           children: [