diff --git a/README.md b/README.md
index a8490d0..f3fe40b 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ VPN->代理->分流, 这三个功能如果同时设置, 您会在您手机的VPN
 ### 开发环境准备
 
 - [golang](https://golang.org/) (1.16以上版本)
-- [flutter](https://flutter.dev/) (2.5.3)(flutter不同版本api差异较大,建议使用同样版本)
+- [flutter](https://flutter.dev/) (2.5.3)(flutter不同版本api差异较大,建议使用临近的版本)
 
 ### 环境配置
 
diff --git a/android/app/build.gradle b/android/app/build.gradle
index 21eeee5..ae88218 100644
--- a/android/app/build.gradle
+++ b/android/app/build.gradle
@@ -36,7 +36,7 @@ android {
         // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
         applicationId "niuhuan.pikapika"
         minSdkVersion 16
-        targetSdkVersion 31
+        targetSdkVersion 30
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName
     }
diff --git a/lib/basic/config/FullScreenUI.dart b/lib/basic/config/FullScreenUI.dart
index 4d2f9b2..8022728 100644
--- a/lib/basic/config/FullScreenUI.dart
+++ b/lib/basic/config/FullScreenUI.dart
@@ -1,5 +1,7 @@
 /// 全屏操作
 
+import 'dart:io';
+
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 
@@ -15,7 +17,6 @@ enum FullScreenUI {
 const _propertyName = "fullScreenUI";
 late FullScreenUI fullScreenUI;
 
-
 Future<void> initFullScreenUI() async {
   fullScreenUI = _fullScreenUIFromString(await method.loadProperty(
     _propertyName,
@@ -67,21 +68,25 @@ void switchFullScreenUI() {
       list.clear();
       break;
   }
-  print(fullScreenUI);
-  SystemChrome.setEnabledSystemUIOverlays(list);
+  if (Platform.isAndroid || Platform.isIOS) {
+    SystemChrome.setEnabledSystemUIOverlays(list);
+  }
 }
 
 Widget fullScreenUISetting() {
-  return StatefulBuilder(
-    builder: (BuildContext context, void Function(void Function()) setState) {
-      return ListTile(
-        title: Text("全屏UI"),
-        subtitle: Text(currentFullScreenUIName()),
-        onTap: () async {
-          await chooseFullScreenUI(context);
-          setState(() {});
-        },
-      );
-    },
-  );
+  if (Platform.isAndroid || Platform.isIOS) {
+    return StatefulBuilder(
+      builder: (BuildContext context, void Function(void Function()) setState) {
+        return ListTile(
+          title: Text("全屏UI"),
+          subtitle: Text(currentFullScreenUIName()),
+          onTap: () async {
+            await chooseFullScreenUI(context);
+            setState(() {});
+          },
+        );
+      },
+    );
+  }
+  return Container();
 }
diff --git a/lib/screens/ComicReaderScreen.dart b/lib/screens/ComicReaderScreen.dart
index 53e8572..f56dd88 100644
--- a/lib/screens/ComicReaderScreen.dart
+++ b/lib/screens/ComicReaderScreen.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -216,8 +217,13 @@ class _ComicReaderScreenState extends State<ComicReaderScreen> {
 
   Future _onFullScreenChange(bool fullScreen) async {
     setState(() {
-      SystemChrome.setEnabledSystemUIOverlays(
-          fullScreen ? [] : SystemUiOverlay.values);
+      if (fullScreen) {
+        if (Platform.isAndroid || Platform.isIOS) {
+          SystemChrome.setEnabledSystemUIOverlays([]);
+        }
+      } else {
+        switchFullScreenUI();
+      }
       _fullScreen = fullScreen;
     });
   }
diff --git a/lib/screens/DownloadReaderScreen.dart b/lib/screens/DownloadReaderScreen.dart
index e589e9f..80f9fa2 100644
--- a/lib/screens/DownloadReaderScreen.dart
+++ b/lib/screens/DownloadReaderScreen.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -198,8 +199,13 @@ class _DownloadReaderScreenState extends State<DownloadReaderScreen> {
 
   Future _onFullScreenChange(bool fullScreen) async {
     setState(() {
-      SystemChrome.setEnabledSystemUIOverlays(
-          fullScreen ? [] : SystemUiOverlay.values);
+      if (fullScreen) {
+        if (Platform.isAndroid || Platform.isIOS) {
+          SystemChrome.setEnabledSystemUIOverlays([]);
+        }
+      } else {
+        switchFullScreenUI();
+      }
       _fullScreen = fullScreen;
     });
   }