Ray Wenderlich's UIImage serializer for Alamofire, updated for Alamofire 3.0 and Swift 2

Alamofire+UIImage.swift

extension Alamofire.Request {

	/** Response serializer for images from: http://www.raywenderlich.com/85080/beginning-alamofire-tutorial */
	public static func imageResponseSerializer() -> ResponseSerializer<UIImage, NSError> {
		return ResponseSerializer { request, response, data, error in
			
			guard let validData = data else {
				let failureReason = "Data could not be serialized. Input data was nil."
				let error = Error.errorWithCode(.DataSerializationFailed, failureReason: failureReason)
				return .Failure(error)
			}
			
			if let image = UIImage(data: validData, scale: UIScreen.mainScreen().scale) {
				return .Success(image)
			}
			else {
				return .Failure(Error.errorWithCode(.DataSerializationFailed, failureReason: "Unable to create image."))
			}

		}
	}
 
	/** Convenience method for returning images from: http://www.raywenderlich.com/85080/beginning-alamofire-tutorial */
	func responseImage(completionHandler: Response<UIImage, NSError> -> Void) -> Self {
		return response(responseSerializer: Request.imageResponseSerializer(), completionHandler: completionHandler)
	}
}

Example of how you might use this with Alamofire 3.0:

Alamofire.request(.GET, "https://www.yourdomain.com/your-image.jpg").responseImage() {
    [weak self] response in
    if let img = response.result.value {
        self?.MyImage = img
    }
}

Many thanks! I needed to update some code to work with Alamofire 3.0 and I was struggling. This is exactly what I need!

This may help either.

struct Five100px {
enum Router: URLRequestConvertible {
static let baseURLString = "https://api.500px.com/v1"
static let consumerKey = "PASTE_YOUR_CONSUMER_KEY_HERE"

case PopularPhotos(Int)
case PhotoInfo(Int, ImageSize)
case Comments(Int, Int)

var URLRequest: NSMutableURLRequest {
  let result: (path: String, parameters: [String: AnyObject]) = {
    switch self {
    case .PopularPhotos (let page):
      let params = ["consumer_key": Router.consumerKey, "page": "\(page)", "feature": "popular", "rpp": "50",  "include_store": "store_download", "include_states": "votes"]
      return ("/photos", params)
    case .PhotoInfo(let photoID, let imageSize):
      let params = ["consumer_key": Router.consumerKey, "image_size": "\(imageSize.rawValue)"]
      return ("/photos/\(photoID)", params)
    case .Comments(let photoID, let commentsPage):
      let params = ["consumer_key": Router.consumerKey, "comments": "1", "comments_page": "\(commentsPage)"]
      return ("/photos/\(photoID)/comments", params)
    }
    }()

  let URL = NSURL(string: Router.baseURLString)
  let URLRequest = NSURLRequest(URL: URL!.URLByAppendingPathComponent(result.path))
  let encoding = Alamofire.ParameterEncoding.URL

  return encoding.encode(URLRequest, parameters: result.parameters).0
}

}