Chen Li Yong Chen Li Yong - 2 months ago 25
Swift Question

How to set different AppDelegate for different targets within same project?

I'm very very new to the target concept in Xcode. I have followed this tutorial to learn to create two targets in the same project, and I just want to know how to make target A use

as its designated app delegate, and target B use
as its designated app delegate. Because on the tutorial, it actually teaches how to make two apps from the same AppDelegate. But I make two (almost) completely different apps, but shares a whole lot of resources and libraries. And while we're on the subject, can I also have target A use a storyboard called
, and target B also use a storyboard called
, but they are actually a different storyboard (but put together inside the same project)? Thanks.


Yes you can create 2 different based upon the target make following changes:

in the projects


you could do something like

int main(int argc, char *argv[])
    @autoreleasepool {

        NSString *appDelegateName;
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone){
            appDelegateName =  NSStringFromClass([AppDelegateIPhone class]);
        } else {
            appDelegateName =  NSStringFromClass([AppDelegateIPad class]);
        return UIApplicationMain(argc, argv, nil, appDelegateName);

But IMO you should not do it.

Instead doi it as apple does it to, in app delegate load different view controllers or different XIBs.

    @implementation AppDelegate

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