Set different initial viewcontroller in storyboard

readme.md

I'm using this peace of code to check if the device that is running my app can take pictures. If the device doesn't have a camera, it will start the app with a different viewcontroller that displays a message.

There are 2 things you need to check in order to get it working:

• the storyboard name in the call storyboardWithName:@"Main" bundle:nil
• the viewcontroller id for the call instantiateViewControllerWithIdentifier:@"noCamera"

If you have any questions, just drop me an email.

AppDelegate.m

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    // Override point for customization after application launch.
    if (![self deviceHasCamera]) {
        // the storyboard name is the part before .storyboard
        UIStoryboard *mainStoryboard = [UIStoryboard storyboardWithName:@"Main"
                                                                 bundle:nil];
        // set the rootviewController to the viewcontroller in the storyboard above.
        self.window.rootViewController = [mainStoryboard instantiateViewControllerWithIdentifier:@"noCamera"];
    }
    return YES;
}

- (BOOL)deviceHasCamera
{
    return [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
}

AppDelegate.swift

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    
    if deviceHasCamera() == false {
        let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
        window?.rootViewController = mainStoryboard.instantiateViewControllerWithIdentifier("noCamera")
    }

    return true
}
    
func deviceHasCamera() -> Bool {
    return UIImagePickerController.isSourceTypeAvailable(.Camera)
}