Swift 1.2 to swift 2：Objective Cメソッドとオプションのメソッドとの競合

Question

オンラインで見つけたチュートリアル（https://www.raywenderlich.com/85528/user-accounts-ios-ruby-rails-swift#next_section）に基づいて、電話のカメラにアクセスするアプリケーションを開発しようとしています。

Objective-C method ' imagePickerController: didFinishPickingMediaWithInfo: ' provided by method ' imagePickerController(_:didFinishPickingMediaWithInfo:) ' conflicts with optional requirement method imagePickerController(_:didFinishPickingMediaWithInfo:)

これは、エラーは

// Camera Extension 
extension SelfieCollectionViewController : UINavigationControllerDelegate,  UIImagePickerControllerDelegate { 
func displayCameraControl() { 
var imagePickerController = UIImagePickerController() 
imagePickerController.delegate = self 
imagePickerController.allowsEditing = true 

if UIImagePickerController.isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera) { 
    imagePickerController.sourceType = UIImagePickerControllerSourceType.Camera 

    if UIImagePickerController.isCameraDeviceAvailable(UIImagePickerControllerCameraDevice.Front) { 
    imagePickerController.cameraDevice = UIImagePickerControllerCameraDevice.Front 
    } else { 
    imagePickerController.cameraDevice = UIImagePickerControllerCameraDevice.Rear 
    } 
} else { 
    imagePickerController.sourceType = UIImagePickerControllerSourceType.PhotoLibrary 
} 

self.presentViewController(imagePickerController, animated: true, completion: nil) 
} 

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) { 
} 
} 

以下のように影響を受けるコードブロックがある

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {} 

を投げられたコードです。しかし、私のカメラ拡張imagePickerController機能は、このエラーを投げ続けますで

完全なコードブロックは、ここではライン（）の111行目にあります。

Answer 1

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) { } 

で

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) { } 

を置き換えます