Load different Storyboard for iPhone 5 @ app start

问题

I am using the following code in my AppDelegate.m to detect which device the user is using:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{

    if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
    {
        CGSize result = [[UIScreen mainScreen] bounds].size;
        if(result.height == 480)
        {
            NSLog(@"iPhone 3,5 Inch");

            [UIStoryboard storyboardWithName:@"MainStoryboard_iPhone" bundle:nil];



        }
        if(result.height == 568)
        {
            NSLog(@"iPhone 4 Inch");
            [UIStoryboard storyboardWithName:@"iPhone5-storyboard" bundle:nil];
        }
    }

    return YES;
}

But when I build the App the NSLog is shown, but no Storyboard is coming up...

The Main Storyboard field in the Deployment info is empty so that the code decided what to load...

Can you help me?

回答1:

Here is a way I now found on a other post:

if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone)
    {    // The iOS device = iPhone or iPod Touch


        CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size;
        UIViewController *initialViewController = nil;
        if (iOSDeviceScreenSize.height == 480)
        {   // iPhone 3GS, 4, and 4S and iPod Touch 3rd and 4th generation: 3.5 inch screen (diagonally measured)

            // Instantiate a new storyboard object using the storyboard file named Storyboard_iPhone35
            UIStoryboard *iPhone35Storyboard = [UIStoryboard storyboardWithName:@"Storyboard_iPhone35" bundle:nil];

            // Instantiate the initial view controller object from the storyboard
            initialViewController = [iPhone35Storyboard instantiateInitialViewController];
        }

        if (iOSDeviceScreenSize.height == 568)
        {   // iPhone 5 and iPod Touch 5th generation: 4 inch screen (diagonally measured)

            // Instantiate a new storyboard object using the storyboard file named Storyboard_iPhone4
            UIStoryboard *iPhone4Storyboard = [UIStoryboard storyboardWithName:@"Storyboard_iPhone4" bundle:nil];

            // Instantiate the initial view controller object from the storyboard
            initialViewController = [iPhone4Storyboard instantiateInitialViewController];
        }

        // Instantiate a UIWindow object and initialize it with the screen size of the iOS device
        self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

        // Set the initial view controller to be the root view controller of the window object
        self.window.rootViewController  = initialViewController;

        // Set the window object to be the key window and show it
        [self.window makeKeyAndVisible];

    } else if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad)

    {   // The iOS device = iPad

        UISplitViewController *splitViewController = (UISplitViewController *)self.window.rootViewController;
        UINavigationController *navigationController = [splitViewController.viewControllers lastObject];
        splitViewController.delegate = (id)navigationController.topViewController;

    }

来源：https://stackoverflow.com/questions/13102054/load-different-storyboard-for-iphone-5-app-start

标签

ios

xcode

ios6