Push View from Presented View Controller in iOS

Question

In Short : How can I PushViewController from Presented ViewController ?

In Brief :

I have MainViewController, In which I have one button on click of button, I am presenting a view called LoginViewController.

On this page (LoginViewController), I again have button, on click of that, I try to push my view controller(called HomeViewController) it doesn't pushes.

Here is my code snippet,

MainViewController.m

- (IBAction)LoginClicked:(id)sender {
    LoginViewController *vc = [[LoginViewController alloc] init];
    [self presentViewController:vc animated:YES completion:nil];
}

LoginViewController.m

- (IBAction)buttonActionMethodOnLoginView:(id)sender{
     NSLog(@"viewControllers %@",APPDELEGATE.nav.viewControllers);
     //LoginViewController is not in this array
     HomeViewController *obj = [[HomeViewController alloc] init];
     [self.navigationController pushViewController:obj animated:YES];
}

But it did not works for me. Also, I printed a stack of view controllers before pushed, but it doesn't have LoginViewController. So, without adding LoginViewController into a stack of view controllers, How can I pushed to HomeViewController from LoginViewController ?

When I getBack from HomeViewController, then LoginViewController should get opened..

Is it possible using doing this single NavigationController?

Note:- Here, I have just taken an example using Login, Home and Main ViewController. But I want that into Other Screens.

Answer 1

You have to Push from your firstView (MainViewController), but you can use animation same as PresentView and DismissView. Use following code for this :-

For Push (on MainViewController)

LoginViewController *VC = [[LoginViewController alloc]init];
CATransition* transition = [CATransition animation];
transition.duration = 0.3f;
transition.type = kCATransitionMoveIn;
transition.subtype = kCATransitionFromTop;
[self.navigationController.view.layer addAnimation:transition
                                            forKey:kCATransition];
[[[UINavigationController alloc] initWithRootViewController:VC] pushViewController:VC animated:NO];
//[self.navigationController pushViewController:VC animated:NO];

For Pop (on LoginViewController)

CATransition* transition = [CATransition animation];
transition.duration = 0.3f;
transition.type = kCATransitionReveal;
transition.subtype = kCATransitionFromBottom;
[self.navigationController.view.layer addAnimation:transition
                                            forKey:kCATransition];
[self.navigationController popViewControllerAnimated:NO];

Using this code, you can get animation same as Present-Dismiss ViewControllers. Refer this answer for more details.

And after that, you can use your code for Pushing LoginViewController to HomeViewController

Hope, this is what you're looking for. Any concern get back to me. :)