调整逻辑

keyBoard/VC/KBPermissionViewController.m

@@ -78,11 +78,28 @@
 #pragma mark - Actions
 
 - (void)onBack {
-    // 先关闭自身，再让调用方按需处理（例如同时退出引导页）
-    void (^handler)(void) = self.onBack;
-    [self dismissViewControllerAnimated:YES completion:^{
-        if (handler) handler();
-    }];
+    // 支持两种展示方式：
+    // 1) 作为子控制器嵌入（无 presentingViewController）→ 交由回调让父 VC 处理（通常 pop）
+    // 2) 作为模态弹出 → 按原策略先 pop 再 dismiss
+    UIViewController *presenter = self.presentingViewController;
+    if (!presenter) {
+        if (self.backHandler) self.backHandler();
+        return;
+    }
+
+    UINavigationController *nav = nil;
+    if ([presenter isKindOfClass:UINavigationController.class]) {
+        nav = (UINavigationController *)presenter;
+    } else if (presenter.navigationController) {
+        nav = presenter.navigationController;
+    }
+
+    if (nav) {
+        [nav popViewControllerAnimated:NO];
+        [nav dismissViewControllerAnimated:YES completion:^{ if (self.backHandler) self.backHandler(); }];
+    } else {
+        [self dismissViewControllerAnimated:YES completion:^{ if (self.backHandler) self.backHandler(); }];
+    }
 }
 
 - (void)openSettings {