iOS开发之获取当前展示的VC


/** 递归查找当前显示的VC*/


+ (UIViewController *)recursiveFindCurrentShowViewControllerFromViewController:(UIViewController *)fromVC


{


if ([fromVC isKindOfClass:[UINavigationController class]]) {


return [self recursiveFindCurrentShowViewControllerFromViewController:[((UINavigationController *)fromVC) visibleViewController]];


} else if ([fromVC isKindOfClass:[UITabBarController class]]) {


return [self recursiveFindCurrentShowViewControllerFromViewController:[((UITabBarController *)fromVC) selectedViewController]];


} else {


if (fromVC.presentedViewController) {


return [self recursiveFindCurrentShowViewControllerFromViewController:fromVC.presentedViewController];


} else {


return fromVC;


}


}


}


/** 查找当前显示的ViewController*/


+ (UIViewController *)getCurrentShowViewController


{


UIViewController *rootVC = [UIApplication sharedApplication].keyWindow.rootViewController;


UIViewController *currentShowVC = [self recursiveFindCurrentShowViewControllerFromViewController:rootVC];


return currentShowVC;


}