No such file location - Uploading image from Swift to S3

Question

I am trying to upload an image to Amazon S3 but I am getting the following error:

Optional(Error Domain=NSCocoaErrorDomain Code=260 "The file “asset.JPG” couldn’t be opened because there is no such file." UserInfo={NSFilePath=/asset.JPG, NSUnderlyingError=0x7fb0d8eb3b00 {Error Domain=NSPOSIXErrorDomain Code=2 "No such file or directory"}})

The below code is where I am getting the image or videos file path - it is stored in the variable 'fileLocation':

func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    //let mediaType2 : UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
    let mediaType : CFString = info[UIImagePickerControllerMediaType] as! CFString



    //if video - save it
    if mediaType == kUTTypeMovie {
        let path = (info[UIImagePickerControllerMediaURL] as! NSURL).path
        if UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(path!) && saveVideoVar == true{
            UISaveVideoAtPathToSavedPhotosAlbum(path!, self, "video:didFinishSavingWithError:contextInfo:", nil)
        }
    }
    else{
        let img : UIImage = info[UIImagePickerControllerOriginalImage] as! UIImage
        let screenSize: CGRect = UIScreen.mainScreen().bounds

        var multiplyNum = screenSize.width / img.size.width
        //if image height is going to be more than 60% of the screen, resize width and height to ensure that it isn't greater than 60% while keeping the aspect ratio correct
        if ((img.size.height*multiplyNum) > (screenSize.height*0.6)){
            multiplyNum = screenSize.height*0.6 / img.size.height
            imageViewWidthConstraint.constant = (multiplyNum*img.size.width)
            imageViewHeightConstraint.constant = screenSize.height*0.6
        }
        else{
            imageViewWidthConstraint.constant = screenSize.width
            imageViewHeightConstraint.constant = (multiplyNum*img.size.height)
        }
        imageView.image = img

    }
    let fileLocation: NSURL = info["UIImagePickerControllerReferenceURL"] as! NSURL
    nwyt.uploadS3(fileLocation)

    self.dismissViewControllerAnimated(true, completion: {})

}

No matter which photo I chose, it always gives the same error that the file "asset.JPG" couldn't be opened..." even though when I print the fileLocation, the path is more complex than that, as an example: "assets-library://asset/asset.JPG?id=EC41AC54-CEBD-49AA-A1FA-864370D103C0&ext=JPG"

Implementation of nwyt.uploadS3() :

func uploadS3(fileBody : NSURL){
    let uploadRequest: AWSS3TransferManagerUploadRequest = AWSS3TransferManagerUploadRequest()
    uploadRequest.bucket = "bx-video"
    uploadRequest.key = "testObject.jpg"
    uploadRequest.body = fileBody
    print(fileBody)

    let transferManager: AWSS3TransferManager = AWSS3TransferManager.defaultS3TransferManager()
    transferManager.upload(uploadRequest).continueWithExecutor(AWSExecutor.mainThreadExecutor(), withBlock: {(task: AWSTask) -> AnyObject! in
        if task.error != nil {
            print(task.error)
            NSLog("Error uploading : " + uploadRequest.key!)
        }
        else {
            NSLog("Upload completed : " + uploadRequest.key!)
        }
        return nil
    })
}

Answer 1

Solution below:

if let img : UIImage = imageView.image! as UIImage{
                let path = (NSTemporaryDirectory() as NSString).stringByAppendingPathComponent("image.png")
                let imageData: NSData = UIImagePNGRepresentation(img)!
                imageData.writeToFile(path as String, atomically: true)

                // once the image is saved we can use the path to create a local fileurl
                let url:NSURL = NSURL(fileURLWithPath: path as String)
                nwyt.uploadS3(url)

            }

Answer 2

AWSS3TransferManager does not support ALAssetsLibrary. You need to copy the file to your app disk space and pass the file NSURL. See this sample as an example.