Return Type of -application:didFinishLaunchingWithOptions:

Question

When developing for iOS, the first entry point for your app is the -[AppDelegate application:didFinishLaunchingWithOptions:]. The return type of this method is

Answer 1

If there is a URL in launchOptions and you return NO, then the operating system will know that you cannot open the provided URL for some reason.

It's not used for anything else. Since usually there is no URL in launchOptions it usually doesn't matter what you return.

So just return YES. You can read more in the Apple documentation here.