+ (UINavigationController*)currentNavigationViewController {
UIViewController* currentViewController = [self currentViewController];
return currentViewController.navigationController;
}
+ (UIViewController *)currentViewController {
UIViewController *result = nil;
UIWindow * window = [[UIApplication sharedApplication] keyWindow];
if (window.windowLevel != UIWindowLevelNormal)
{
NSArray *windows = [[UIApplication sharedApplication] windows];
for(UIWindow * tmpWin in windows)
{
if (tmpWin.windowLevel == UIWindowLevelNormal)
{
window = tmpWin;
break;
}
}
}
UIView *frontView = [[window subviews] objectAtIndex:0];
id nextResponder = [frontView nextResponder];
if ([nextResponder isKindOfClass:[UIViewController class]])
result = nextResponder;
else
result = window.rootViewController;
return [self currentViewControllerFrom:result];
}
+ (UIViewController*)currentViewControllerFrom:(UIViewController*)viewController {
if ([viewController isKindOfClass:[UINavigationController class]]) {
UINavigationController* navigationController = (UINavigationController *)viewController;
return [self currentViewControllerFrom:navigationController.viewControllers.lastObject];
} else if([viewController isKindOfClass:[UITabBarController class]]) {
UITabBarController* tabBarController = (UITabBarController *)viewController;
return [self currentViewControllerFrom:tabBarController.selectedViewController];
} else if(viewController.presentedViewController != nil) {
return [self currentViewControllerFrom:viewController.presentedViewController];
} else {
return viewController;
}
}
ios currentViewController
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