switching UIViewController while using storyboard

Question

I'm developing an app for iPhone. My problem is, I have a uiviewcontroller that has something like a shortcuts menu. From there, I want to be able to switch page to any on storyboard but just presenting it like this

[self.mainID dismissViewControllerAnimated:YES
                         completion:^{
                             checkin_vc *sampleView = [[checkin_vc alloc] init];
                             [self.mainID presentViewController:sampleView animated:YES completion:nil];
                         }];

doesn't seem to cut it. nothing happens, and if I try to present it without dismissing the current controller first, then I get a black screen, most likely because I'm trying to present an object of class, not the actual view controller that is set up on the storyboard.

i tried

[self.mainID dismissViewControllerAnimated:YES
                         completion:^{
                             UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
                             checkin_vc *sampleVIew = (checkin_vc *)[mainStoryboard instantiateViewControllerWithIdentifier:@"checkin_sid"];
                             [self.mainID presentViewController:sampleVIew animated:YES completion:nil];
                         }];

dismiss is done and I'm returned to previous view controller, but completion part never gets done.

I also get this warning:

2014-05-12 00:05:31.388 Roborder[5503:60b] Warning: Attempt to present on whose view is not in the window hierarchy!

Answer 1

My experience with storyboards is that instantiating via alloc init isn't going to work. Firstly make sure that every view controller you may call has, in the storyboard, a storyboardID set. It's just a unique string but you can use it as below to instatiate:

UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
checkin_vc *sampleVIew = (checkin_vc *)[mainStoryboard instantiateViewControllerWithIdentifier:@"checkin_vc"];
//present as original code.

It's late though so let me know if I'm misunderstanding the question :)

Answer 2

1. Cocoadelica's code is correct, but you need give your checkin_vc an Identifier in the storyboard to present it-- check the left panel -- show the identity inspector -- put a string in "Storyboard ID" (for example: checkin view controller)-- then you can use it in the code like this

   checkin_vc *sampleVIew = (checkin_vc *)[mainStoryboard instantiateViewControllerWithIdentifier:@"checkin view controller"];

2. you should not dismiss the shortcut menu(if it's your root menu) cause you're checkin_vc will lost it's parent(viewcontroller).

3. here's my sample code of viewcontroller switch, hope it will help you:

in the MenuViewController.m

    -(IBAction)GotoShop:(id)sender {
      ShopViewController *viewController = [self.storyboard instantiateViewControllerWithIdentifier:@"ShopController"];
      [self presentViewController:viewController animated:YES completion:nil];
     }

this will present the shopViewController

and in the ShopViewController.m

-(IBAction)QuitShop:(id)sender {
    [self dismissViewControllerAnimated:YES completion:nil];
}

This will dismiss the shopViewController and return to it's parentviewcontroller --- in this case back to MenuViewController