Initialize Swift storyboard from Objective-C - ios

Question

I'm trying to add a new storyboard in Swift to an old Objective-C app:
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"MainStoryboard01" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"OnboardingViewController"];
[self presentViewController:vc animated:YES completion:NULL];
With Swift storyboard:
I'm always getting error:
'Could not find a storyboard named 'MainStoryboard01' in bundle NSBundle <.../Developer/CoreSimulator/Devices/753636C1-ABB5-4D6E-B184-5C4638FB2CE9/data/Containers/Bundle/Application/398410C0-BB2C-4574-B058-95D30F8D1B5D/Credit Call.app> (loaded)'
Calling swift classes like
TestClass *instance = [TestClass new];
[instance testFunction];
Normally works. Any idea how to call swift storyboard + it's swfit controller in Objective-C app?
// EDIT:
I finally get working this:
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Onboarding" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"MainStoryboard01"];
but on next line
[self presentViewController:vc animated:YES completion:NULL];
I get this error:
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[MyAppDelegate presentViewController:animated:completion:]: unrecognized selector sent to instance 0x6080000b3b60'
Any ideas? I need to replace this with the storyboard:
Registration *reg = [[Registration alloc] init];
registrationNav = [[UINavigationController alloc] initWithRootViewController:reg];
[reg release];
[self.mainBackgroundView addSubview:[registrationNav view]];
=> https://codepaste.net/jkfras I've added skeleton of the MyAppDelegate.m

Answer 1

You are making mistake here, MainStoryboard01 that you have set is Storyboard Identifer using that you can called instantiateViewControllerWithIdentifier. It is not the another storyboard name. So its should be simply like this.
//You need to put storyboard name here the check the image for more detail
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"MainStoryboard01"];
[self presentViewController:vc animated:YES completion:nil];
Edit: Try this way.
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"Main" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"MainStoryboard01"];
[self.mainBackgroundView addSubview:[vc view]];

Answer 2

If you want to reference to a storyboard then you should use its name, so if your storyboard has a name "MyNewStoryboard" (MyNewStoryboard.storyboard) then the right way to create its reference is like this:
UIStoryboard *sb = [UIStoryboard storyboardWithName:#"MyNewStoryboard" bundle:nil];
Don't use a storyboard ID here. Storyboard ID you just set in the controller's attributes is the identifier for your controller. So you can use it this way:
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:#"MainStoryboard01"];
Change your new controller's Storyboard ID to something more informative, so for example "OnboardingViewController", and then after putting your storyboard file name in your first line your code should be fine.