[ SWIFT ] - 異常處理 - Objective-C method 'application:didFinishLaunchingWithOptions:'

在swift升級至1.2版之後，對於原先開發的APP或多或少都會需要調整一下！
這次遇到的問題比較特殊，希望在與與大家分享解決方法！希望可以節省debug的時間

檔案名稱：AppDelegate.swift

[ 原始程式碼 ]：

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

        return true

    }

[ 錯誤訊息 ]：
Objective-C method 'application:didFinishLaunchingWithOptions:' provided by method 'application(:didFinishLaunchingWithOptions:)' conflicts with optional requirement method 'application(:didFinishLaunchingWithOptions:)' in protocol 'UIApplicationDelegate'

[ 錯誤訊息畫面 ]： 

[ 修改後程式碼 ]：

 func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {

        return true

    }