ios 获取当前处于活动的viewController_当前活动的viewcontroller-优快云博客

本文将介绍如何在iOS应用中通过自定义方法获取当前处于活动状态的ViewController，包括处理不同类型的导航控制器和TabBar控制器场景。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

ios 获取当前处于活动的viewController

#pragma mark - 获取当前活动的viewcontroller
- (UIViewController*)topViewController {
    return [self topViewControllerWithRootViewController:[UIApplication sharedApplication].keyWindow.rootViewController];
}

- (UIViewController*)topViewControllerWithRootViewController:(UIViewController*)rootViewController {
    if ([rootViewController isKindOfClass:[UITabBarController class]]) {

        UITabBarController* tabBarController = (UITabBarController*)rootViewController;
        return [self topViewControllerWithRootViewController:tabBarController.selectedViewController];
    } else if ([rootViewController isKindOfClass:[UINavigationController class]]) {

        UINavigationController* navigationController = (UINavigationController*)rootViewController;
        return [self topViewControllerWithRootViewController:navigationController.visibleViewController];
    } else if (rootViewController.presentedViewController) {

        UIViewController* presentedViewController = rootViewController.presentedViewController;
        return [self topViewControllerWithRootViewController:presentedViewController];
    } else {

        return rootViewController;
    }
}