weird swift error after upgrading from 1.1 to 1.2

Question

My project prior to the update was working fine with swift 1.1 and Xcode 6.1.1. i just upgraded to swift 1.2 and get a weird error in my AppDelegate

 func application(application:UIApplication, didReceiveRemoteNotification userInfo:NSDictionary)

and also in a class derived from UITextFieldDelegate

func textFieldDidBeginEditing(textField: UITextField!) -> Bool // called textfield for locationField clicked

saying something along the lines

Objective-C method 'application:didReceiveRemoteNotification:' provided by method 'application(:didReceiveRemoteNotification:)' conflicts with optional requirement method 'application(:didReceiveRemoteNotification:)' in protocol 'UIApplicationDelegate'

the error for the textFieldDidBeginEditing is the same:

Objective-C method 'textFieldDidBeginEditing:' provided by method 'textFieldDidBeginEditing' conflicts with optional requirement method 'textFieldDidBeginEditing' in protocol 'UITextFieldDelegate'

What is the issue?

Answer 1

Just rewrite the method's name (should fix itself), and copy/paste the code in the methods. This should work.

Answer 2

This worked for me:

Before:

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool

After:

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool!