jump, jump,

-(IBAction)jumpToHome:(id)sender

{

    NSArray *controllerArr = self.navigationController.viewControllers;

    for (NSObject *obj in controllerArr) {

        if ([obj isKindOfClass:[HomeViewController class]]) {

            HomeViewController *controller = (HomeViewController *)obj;

            [self.navigationController popToViewController:controller animated:YES];

            return;

        }

    }

    

HomeViewController *homeController = [[HomeViewControlleralloc] init];

[self.navigationControllerpopToViewController:homeController animated:YES];

pop已经存在的，push新的， 

}