创建nav宏

去除tabbar透明

keyBoard/KeyBoardPrefixHeader.pch

@@ -129,4 +129,47 @@ static inline BOOL KBDeviceHasNotchRuntime(void) {
 #define KB_DEVICE_HAS_NOTCH (KBDeviceHasNotchRuntime())
 #endif
 
+// --- 获取当前可用的 UINavigationController ---
+// 说明：
+// 1. 优先取最顶层可见 VC（见 UIViewController+Extension），再解析其所在的导航容器；
+// 2. 兼容被 UITabBarController 包裹、直接为 UINavigationController、或普通 VC 嵌套等场景；
+// 3. 若无法获取，返回 nil。
+static inline __kindof UINavigationController *KB_CurrentNavigationController(void) {
+    UIViewController *top = [UIViewController kb_topMostViewController];
+    if (!top) {
+        UIWindow *w = KB_KeyWindow();
+        top = w.rootViewController;
+    }
+    if (!top) return nil;
+
+    // 直接就是导航控制器
+    if ([top isKindOfClass:[UINavigationController class]]) {
+        return (UINavigationController *)top;
+    }
+    // 顶层是 TabBar，取选中的子控制器
+    if ([top isKindOfClass:[UITabBarController class]]) {
+        UITabBarController *tab = (UITabBarController *)top;
+        UIViewController *sel = tab.selectedViewController ?: tab.viewControllers.firstObject;
+        if ([sel isKindOfClass:[UINavigationController class]]) return (UINavigationController *)sel;
+        return sel.navigationController ?: nil;
+    }
+    // 普通 VC，取其所属导航
+    if (top.navigationController) return top.navigationController;
+
+    // 兜底：尝试从 root 解析
+    UIViewController *root = KB_KeyWindow().rootViewController;
+    if ([root isKindOfClass:[UINavigationController class]]) return (UINavigationController *)root;
+    if ([root isKindOfClass:[UITabBarController class]]) {
+        UIViewController *sel = ((UITabBarController *)root).selectedViewController;
+        if ([sel isKindOfClass:[UINavigationController class]]) return (UINavigationController *)sel;
+        return sel.navigationController ?: nil;
+    }
+    return nil;
+}
+
+// 简便宏：直接当做属性来用，例如：`[KB_CURRENT_NAV pushViewController:vc animated:YES];`
+#ifndef KB_CURRENT_NAV
+#define KB_CURRENT_NAV (KB_CurrentNavigationController())
+#endif
+
 #endif /* KeyBoardPrefixHeader_pch */