Dismiss to other storyboard - ios

Question

In my project i have 2 storyboards. One for login and one for the main.
After login is complete i present the main storyboard using this method:
-(void)successLogin {
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [mainStoryboard instantiateInitialViewController];
[self presentViewController:vc animated:YES completion:nil];
}
My question is how do I get back to the login storyboard if i want to put logout button in the main storyboard. I tried doing the following:
[self dismissViewControllerAnimated:YES completion:nil];
And it still doesn't work.

Answer 1

try this on LOGOUT click event:
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
LoginviewController *Login = [storyboard instantiateViewControllerWithIdentifier:#"LoginviewController"];
[self.navigationController pushViewController:Login animated:YES];

Answer 2

try to set one view controller as root view controller then present another view controller.
[[[UIApplication sharedApplication] keyWindow] setRootViewController:viewController];
[viewController presentViewController:VC animated:YES completion:nil];
you will come to the rootViewController when you dismissViewControllerAnimated:

Answer 3

logout success
Try this code it works for you
-(void)successlogout
{
//[self dismissViewControllerAnimated:NO completion:nil];
UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
login *vc = [mainStoryboard instantiateViewControllerWithIdentifier:#"login"];
[self presentViewController:vc animated:NO completion:nil];
}