iOS开发--获取当前控制器ViewController

最新推荐文章于 2024-06-12 14:15:58 发布

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最新推荐文章于 2024-06-12 14:15:58 发布

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分类专栏： iOS开发文章标签： ViewContoller 控制器当前

本文链接：https://blog.youkuaiyun.com/github_36843038/article/details/82147443

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+ (UIViewController *)currentTopViewController {
    // Find best view controller
    UIViewController* viewController = [UIApplication sharedApplication].keyWindow.rootViewController;
    return [self findBestViewController:viewController];
}

+ (UIViewController *)findBestViewController:(UIViewController*)vc {
    if (vc.presentedViewController) {
        // Return presented view controller
        return [self findBestViewController:vc.presentedViewController];
    } else if ([vc isKindOfClass:[UISplitViewController class]]) {
        // Return right hand side
        UISplitViewController* svc = (UISplitViewController*) vc;
        if (svc.viewControllers.count > 0)
            return [self findBestViewController:svc.viewControllers.lastObject];
        else
            return vc;
    } else if ([vc isKindOfClass:[UINavigationController class]]) {
        // Return top view
        UINavigationController* svc = (UINavigationController*) vc;
        if (svc.viewControllers.count > 0)
            return [self findBestViewController:svc.visibleViewController];
        else
            return vc;
    } else if ([vc isKindOfClass:[UITabBarController class]]) {
        // Return visible view
        UITabBarController* svc = (UITabBarController*) vc;
        if (svc.viewControllers.count > 0)
            return [self findBestViewController:svc.selectedViewController];
        else
            return vc;
    } else {
        // Unknown view controller type, return last child view controller
        return vc;
    }
}