ios 改变push 的跳转转方向

   CATransition* transition = [CATransition animation];
    transition.type = kCATransitionPush;//可更改为其他方式
    transition.subtype = kCATransitionFromRight;//可更改为其他方式
    [self.navigationController.view.layer addAnimation:transition forKey:kCATransition];
       [self.navigationController popToRootViewControllerAnimated:YES];