diff --git a/keyBoard.xcodeproj/project.pbxproj b/keyBoard.xcodeproj/project.pbxproj
index 89fe8e2..792db1c 100644
--- a/keyBoard.xcodeproj/project.pbxproj
+++ b/keyBoard.xcodeproj/project.pbxproj
@@ -11,7 +11,6 @@
 		04A9FE0F2EB481100020DB6D /* KBHUD.m in Sources */ = {isa = PBXBuildFile; fileRef = 04FC97082EB31B14007BD342 /* KBHUD.m */; };
 		04A9FE132EB4D0D20020DB6D /* KBFullAccessManager.m in Sources */ = {isa = PBXBuildFile; fileRef = 04A9FE112EB4D0D20020DB6D /* KBFullAccessManager.m */; };
 		04A9FE162EB873C80020DB6D /* UIViewController+Extension.m in Sources */ = {isa = PBXBuildFile; fileRef = 04A9FE152EB873C80020DB6D /* UIViewController+Extension.m */; };
-		04A9FE172EB873C80020DB6D /* UIViewController+Extension.m in Sources */ = {isa = PBXBuildFile; fileRef = 04A9FE152EB873C80020DB6D /* UIViewController+Extension.m */; };
 		04C6EABA2EAF86530089C901 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = 04C6EAAE2EAF86530089C901 /* Assets.xcassets */; };
 		04C6EABC2EAF86530089C901 /* LaunchScreen.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 04C6EAB12EAF86530089C901 /* LaunchScreen.storyboard */; };
 		04C6EABD2EAF86530089C901 /* Main.storyboard in Resources */ = {isa = PBXBuildFile; fileRef = 04C6EAB42EAF86530089C901 /* Main.storyboard */; };
@@ -796,7 +795,6 @@
 				04FC95B22EB0B2CC007BD342 /* KBSettingView.m in Sources */,
 				04FC95702EB09516007BD342 /* KBFunctionView.m in Sources */,
 				04FC956D2EB054B7007BD342 /* KBKeyboardView.m in Sources */,
-				04A9FE172EB873C80020DB6D /* UIViewController+Extension.m in Sources */,
 				04FC95672EB0546C007BD342 /* KBKey.m in Sources */,
 				A1B2C3F42EB35A9900000001 /* KBFullAccessGuideView.m in Sources */,
 				A1B2C4002EB4A0A100000003 /* KBAuthManager.m in Sources */,
diff --git a/keyBoard/AppDelegate.m b/keyBoard/AppDelegate.m
index 77dd1e6..1b7ebd8 100644
--- a/keyBoard/AppDelegate.m
+++ b/keyBoard/AppDelegate.m
@@ -37,7 +37,7 @@ static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoardst.CustomKe
     [Bugly startWithAppId:BuglyId config:buglyConfig];
     /// 判断获取键盘权限（统一管理）：
     dispatch_async(dispatch_get_main_queue(), ^{
-        UIViewController *top = [self kb_topMostViewController];
+        UIViewController *top = [UIViewController kb_topMostViewController];
         if (top) {
             Class mgrCls = NSClassFromString(@"KBKeyboardPermissionManager");
             if (mgrCls && [mgrCls respondsToSelector:@selector(shared)]) {
@@ -56,6 +56,15 @@ static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoardst.CustomKe
     return YES;
 }
 
+- (void)applicationDidBecomeActive:(UIApplication *)application{
+    // When returning from Settings, re-check the keyboard enable state
+    // and hide the guide if the user has enabled our keyboard.
+    // Also shows the guide again if still not enabled.
+    dispatch_async(dispatch_get_main_queue(), ^{
+        [self kb_presentPermissionIfNeeded];
+    });
+}
+
 
 - (void)setupRootVC{
     self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
@@ -67,17 +76,6 @@ static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoardst.CustomKe
 
 #pragma mark - Permission presentation
 
-- (UIViewController *)kb_topMostViewController
-{
-    UIViewController *root = self.window.rootViewController;
-    if (!root) return nil;
-    UIViewController *top = root;
-    while (top.presentedViewController) {
-        top = top.presentedViewController;
-    }
-    return top;
-}
-
 
 #pragma mark - Deep Link
 
@@ -103,7 +101,7 @@ static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoardst.CustomKe
     // 已登录则不提示
     BOOL loggedIn = ([AppleSignInManager shared].storedUserIdentifier.length > 0);
     if (loggedIn) return;
-    UIViewController *top = [self kb_topMostViewController];
+    UIViewController *top = [UIViewController kb_topMostViewController];
     if (!top) return;
     [KBLoginSheetViewController presentIfNeededFrom:top];
 }
@@ -123,7 +121,7 @@ static NSString * const kKBKeyboardExtensionBundleId = @"com.keyBoardst.CustomKe
 - (void)kb_presentPermissionIfNeeded
 {
     BOOL enabled = KBIsKeyboardEnabled();
-    UIViewController *top = [self kb_topMostViewController];
+    UIViewController *top = [UIViewController kb_topMostViewController];
     if (!top) return;
     if ([top isKindOfClass:[KBPermissionViewController class]]) {
         if (enabled) {
diff --git a/keyBoard/Class/Categories/UIViewController+Extension.h b/keyBoard/Class/Categories/UIViewController+Extension.h
index 281f13b..ab29df4 100644
--- a/keyBoard/Class/Categories/UIViewController+Extension.h
+++ b/keyBoard/Class/Categories/UIViewController+Extension.h
@@ -10,6 +10,9 @@
 NS_ASSUME_NONNULL_BEGIN
 
 @interface UIViewController (Extension)
+/// Returns the top-most presented view controller from the app's active window.
+/// This mirrors the prior logic in AppDelegate (walks presentedViewController chain).
++ (nullable UIViewController *)kb_topMostViewController;
 @end
 
 NS_ASSUME_NONNULL_END
diff --git a/keyBoard/Class/Categories/UIViewController+Extension.m b/keyBoard/Class/Categories/UIViewController+Extension.m
index 68b4ef2..de0def3 100644
--- a/keyBoard/Class/Categories/UIViewController+Extension.m
+++ b/keyBoard/Class/Categories/UIViewController+Extension.m
@@ -9,4 +9,38 @@
 
 @implementation UIViewController (Extension)
 
+/// Find the app's active window in a scene-friendly way (iOS 13+ safe)
+static inline __kindof UIWindow *KBActiveWindow(void) {
+    UIWindow *window = [UIApplication sharedApplication].keyWindow;
+    if (window) return window;
+    // Fallbacks when keyWindow is nil (e.g. iOS 13+ with scenes)
+    if (@available(iOS 13.0, *)) {
+        for (UIScene *scene in [UIApplication sharedApplication].connectedScenes) {
+            if (scene.activationState != UISceneActivationStateForegroundActive) { continue; }
+            if (![scene isKindOfClass:[UIWindowScene class]]) { continue; }
+            UIWindowScene *ws = (UIWindowScene *)scene;
+            for (UIWindow *w in ws.windows) {
+                if (w.isKeyWindow) { return w; }
+            }
+            if (ws.windows.firstObject) { return ws.windows.firstObject; }
+        }
+    }
+    // iOS 12 and earlier fallback
+    for (UIWindow *w in [UIApplication sharedApplication].windows) {
+        if (w.isKeyWindow) { return w; }
+    }
+    return [UIApplication sharedApplication].windows.firstObject;
+}
+
++ (UIViewController *)kb_topMostViewController {
+    UIWindow *window = KBActiveWindow();
+    UIViewController *root = window.rootViewController;
+    if (!root) return nil;
+    UIViewController *top = root;
+    while (top.presentedViewController) {
+        top = top.presentedViewController;
+    }
+    return top;
+}
+
 @end
diff --git a/keyBoard/Class/Home/VC/HomeVC.m b/keyBoard/Class/Home/VC/HomeVC.m
index 8a54048..5959460 100644
--- a/keyBoard/Class/Home/VC/HomeVC.m
+++ b/keyBoard/Class/Home/VC/HomeVC.m
@@ -31,6 +31,11 @@
     }];
 }
 
+- (void)viewWillAppear:(BOOL)animated{
+    [super viewWillAppear:animated];
+    NSLog(@"===");
+}
+
 - (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
 //    KBGuideVC *vc = [[KBGuideVC alloc] init];
 //    [self.navigationController pushViewController:vc animated:true];
diff --git a/keyBoard/KeyBoardPrefixHeader.pch b/keyBoard/KeyBoardPrefixHeader.pch
index 24814f2..ece6649 100644
--- a/keyBoard/KeyBoardPrefixHeader.pch
+++ b/keyBoard/KeyBoardPrefixHeader.pch
@@ -25,6 +25,7 @@
 
 
 /// 项目
+#import "UIViewController+Extension.h"
 #import "BaseNavigationController.h"
 #import "BaseTableView.h"
 #import "BaseCell.h"