Question

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This fine question and answer does not quite deal with my Universal app which had both a iPhone and iPad xibs and now wants to use a storyboard.

This is the xib based BSAppDelegate.m (before storyboard)

    #import "BSAppDelegate.h"
    #import "BSViewController.h"

    @implementation BSAppDelegate

    NSString *receivedData;

    - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {
        // Override point for customization after application launch.
        // return YES;
        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
        // Override point for customization after application launch.
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
            self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPhone" bundle:nil];
        } else {        
            self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPad" bundle:nil];
    }
        self.window.rootViewController = self.viewController;   
        [self.window makeKeyAndVisible];
        return YES;
    }

I have tried to insert the following code right after the else above but I cannot quite complete the code fix which needs to set self.viewController to be compatible with the above code.

UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil];
UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"BSViewController"];
vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentViewController:vc animated:YES completion:NULL];

Can you show me how to fix my code, please? I am using Xcode 4.5.2 and developing for iOS 6.

Answer 1

two issues:

1. just set self.ViewController to your vc which you get from the storyboard 🙂

       #import "BSAppDelegate.h"
   #import "BSViewController.h"
   
   @implementation BSAppDelegate
   
   NSString *receivedData;
   
   - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
   {
       // Override point for customization after application launch.
       // return YES;
       self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
       // Override point for customization after application launch.
       if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
           self.viewController = [[BSViewController alloc] initWithNibName:@"BSViewController_iPhone" bundle:nil];
       } else {        
           UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard_iPad" bundle:nil];
           UIViewController *vc = [sb instantiateViewControllerWithIdentifier:@"BSViewController"];
           vc.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
           self.viewController = (id)vc;
       }
       self.window.rootViewController = self.viewController;   
       [self.window makeKeyAndVisible];
       return YES;
   }   
   

2. in your storyboard, you have no identifier named ‘BSViewController’ set so the call instantiateViewControllerWithIdentifier will fail. set the identifier (aka the Storyboard ID) visible in your screenshot