What does the app delegate do in a xcode project?

Question

Ok, so when I create a new cocoa project, there's always 2 files that's created for me. That's the .h and the .m NAME AppDelegate file. I've read a lot of books about cocoa and the documentary from apple that told me to create new files instead of using it. What's the point of those 2 files anyways? And is it safe to delete them?

Answer 1

Do not delete the App Delegate! This deals with the main "delegate" notifications for the application like:

• When the application finished loading an is ready for you to add your first controller:

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

• When the application terminates:

  -(void)applicationWillTerminate:(UIApplication *)application;

Check out this post for more information on the app delegate.

The application delegate is one of the most important files in your project!