Alamofire.download() method: Where is the file and did it save successfully?

Question

The example for using Alamofire.download() works just fine, but there isn\'t any detail in how to access the resulting downloaded file. I can figure out where the file is and wh

Answer 1

I spent about 8 hours looking for an answer to this one. The solution below works for me, and basically I chain to the download method to display the image. In the example below, I'm downloading the profile image of a user knowing his Facebook ID:

    let imageURL = "http://graph.facebook.com/\(FBId!)/picture?type=large"

    let destination: (NSURL, NSHTTPURLResponse) -> (NSURL) = {
        (temporaryURL, response) in

        if let directoryURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as? NSURL {
            var localImageURL = directoryURL.URLByAppendingPathComponent("\(self.FBId!).\(response.suggestedFilename!)")
            return localImageURL
        }
        return temporaryURL
    }

    Alamofire.download(.GET, imageURL, destination).response(){
        (_, _, data, _) in
            if let directoryURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0] as? NSURL {
                var error: NSError?
                let urls = NSFileManager.defaultManager().contentsOfDirectoryAtURL(directoryURL, includingPropertiesForKeys: nil, options: nil, error: &error)

                if error == nil {
                    let downloadedPhotoURLs = urls as! [NSURL]
                    let imagePath = downloadedPhotoURLs[0] // assuming it's the first file
                    let data = NSData(contentsOfURL: imagePath)
                    self.viewProfileImage?.image = UIImage(data: data!)
                }
            }
    }