how to display UIViewController from a NSObject class?

Question

There is a current view as UIViewController which call "LoginView" but I'm not in, I'm in a NSObject class and I want to call, display an other UIViewController which is call "MapView". How can I do this?

The problem is like above screenshot.

Answer 1

I used like this in my NSObject class:

[[[UIApplication sharedApplication] delegate].window.rootViewController presentViewController:yourMapViewContorller animated:YES completion:nil];

I hope it's useful.

Answer 2

At your IBAction or specific method write this:

UIWindow *window=[UIApplication sharedApplication].keyWindow;
UIViewController *root = [window rootViewController];

UIStoryboard *storyboard = root.storyboard;
CustomViewController *vcc =(CustomViewController *) [storyboard instantiateViewControllerWithIdentifier:@"storyBoardID"];

[root presentModalViewController:vcc animated:YES];