Call storyboard scene programmatically (without needing segue)?

Question

I have a modal storyboard scene that I want to be accessible to all my other scenes. Creating a modal segue to it from every scene on my storyboard creates a big mess of str

Answer 1

Yes you can. Do something like this to get access to the VC, then just Modal Push it:

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:nil];
MyNewViewController *myVC = (MyNewViewController *)[storyboard instantiateViewControllerWithIdentifier:@"myViewCont"];

Answer 2

I have a case where I want to present a view controller from the main part of the app, one with settings & help & so on. To do this, I want it to be within a nav controller, sort of a little plug in module we can call from a UIBarButtonItem.

Now, this can be to/in the current storyboard, or to another, it doesn't matter.

I want to do it this way, because I loathe the potential of segue line spaghetti all over my storyboard.

Here's how to do it.

- (IBAction)displaySettings:(id)sender
{
    LOG_SELECTOR() // google that for extra goodness

    // FYI, this can be done using a different storyboard like so.
    /*
     NSString * storyboardName = @"MainStoryboard_iPhone"; // possibly use device idiom?
     UIStoryboard * storyboard = [UIStoryboard storyboardWithName:storyboardName bundle:nil];
     */

    // To push a new set of scenes with a new Navigation Controller, it is done like this:
    UINavigationController *settingsNC = [self.storyboard instantiateViewControllerWithIdentifier:@"Settings Nav Controller"];
    OBSettingsUIViewController *settingsVC = [self.storyboard instantiateViewControllerWithIdentifier:@"Settings root"];
    [settingsNC pushViewController:settingsVC animated:NO];

    [settingsNC setModalTransitionStyle:UIModalTransitionStyleCrossDissolve];

    // Present the view controller;
    [self presentViewController:settingsNC animated:YES completion:NULL];
}

In the presented view controllers (or in a subclass of the Navigation Controller), you can have a UIBarButtonItem to then dismiss the whole presented hierarchy of view controllers like so:

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

Hope this helps a bunch of people out. Cheers.