How can I manually switch between UIViewControllers in storyboard?

Question

All I need is to view a UIView controller in same storyboard file manually with code. I use storyboard to make all forms and connections. My application starts

Answer 1

In this statement:

[self.view pushViewController:LoginViewController animated:YES];

it seems you are trying to push a class. You should push an object, your actual controller:

LoginViewController* controller = [[LoginViewController alloc] init...];
[self.view pushViewController:controller animated:YES];

this will at least compile, and if all the rest is fine, also give you the second controller.

EDIT:

I missed one point. You are pushing the view controller on to a view. That makes no sense, you should push the controller on to the navigation controller:

 *del = (AppDelegate*)[UIApplication sharedApplication].delegate;
[del.navigationController pushViewController:controller animated:YES];

This is true, at least, if you created your project from the Navigation-based template (which creates an application delegate with a reference to the navigation controller). Otherwise, please provide details about how you create the navigation controller.