Where is the applicationDidFinishLaunching function?

My documentation says:

Add the codes below into the applicationDidFini开发者_运维技巧shLaunching function... -(void)applicationDidFinishLaunching:(UIApplication *)application{

But I only see

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

Q: Are these two the same?

If not, where do I find the applicaitonDidFinishLaunching function?

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Per the Apple documentation:

applicationDidFinishLaunching:

Tells the delegate when the application has finished launching.

-(void)applicationDidFinishLaunching:(UIApplication *)application

This method is used in earlier versions of iOS to initialize the application and prepare it to run. In iOS 3.0 and later, you should use the application:didFinishLaunchingWithOptions: instead.

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These are the same. The options have been added in the 4.0 SDK if I recall correctly.

Edit: it's been there since 3.0: http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIApplicationDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intf/UIApplicationDelegate