upload collection view images into server using swift - swift2

Question

I'm developing an app which has UICollectionView as like #zhangao0086/DKImagePickerController# example in Github. Now i need to upload the displayed UICollectionviewCell images into server. Can any one suggest me the right tuts for uploading. Thanks in advance.
UICollectionView code as follows:
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let asset = self.assets![indexPath.row]
var cell: UICollectionViewCell?
var imageView: UIImageView?
if asset.isVideo {
cell = collectionView.dequeueReusableCellWithReuseIdentifier("CellVideo", forIndexPath: indexPath)
imageView = cell?.contentView.viewWithTag(1) as? UIImageView
} else {
cell = collectionView.dequeueReusableCellWithReuseIdentifier("CellImage", forIndexPath: indexPath)
imageView = cell?.contentView.viewWithTag(1) as? UIImageView
}
if let cell = cell, imageView = imageView {
let layout = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
let tag = indexPath.row + 1
cell.tag = tag
asset.fetchImageWithSize(layout.itemSize.toPixel(), completeBlock: { image, info in
if cell.tag == tag {
imageView.image = image
}
})
}
return cell!
}
uploading the image into server
func barButtonItemClicked(barButtonItem: UIBarButtonItem)
{
let myUrl = NSURL(string: "http://moneymonkey.tokiiyo.com/api/signature");
let typeItem: InsuranceType = InsuranceManager.sharedInstance.TypeArray[0]
let compItem: Companies = InsuranceManager.sharedInstance.CompArray[0]
let request = NSMutableURLRequest(URL:myUrl!);
request.HTTPMethod = "POST";
let param = [
"api_key" : "AiK58j67",
"api_secret" : "a#9rJkmbOea90-",
"phone" : "\(mobile)",
"policy_type" : "\(typeItem.name)",
"company" : "\(compItem.cname)"
]
print("Policy_type: \(typeItem.name)")
let boundary = generateBoundaryString()
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
let imageData = UIImagePNGRepresentation(?) //here what imageView
if(imageData==nil) { return; }
request.HTTPBody = createBodyWithParameters(param, filePathKey: "file", imageDataKey: imageData!, boundary: boundary)
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error=\(error)")
return
}
// You can print out response object
print("******* response = \(response)")
// Print out reponse body
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("****** response data = \(responseString!)")
do{
_ = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
dispatch_async(dispatch_get_main_queue(),{
});
}
catch
{
// report error
print("Oops!! Something went wrong\(error)")
}
}
task.resume()
}
func createBodyWithParameters(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {
let body = NSMutableData();
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
let filename = "image.png"
let mimetype = "image/png"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.appendData(imageDataKey)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
return body
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().UUIDString)"
}

Answer 1

J
you can use Alamofire https://github.com/Alamofire/Alamofire
Use like this :
Alamofire.upload(.POST, "YourURl", file: YourFile)
.progress { bytesWritten, totalBytesWritten, totalBytesExpectedToWrite in
print(totalBytesWritten)
// This closure is NOT called on the main queue for performance
// reasons. To update your ui, dispatch to the main queue.
dispatch_async(dispatch_get_main_queue()) {
print("Total bytes written on main queue: \(totalBytesWritten)")
}
}
.responseJSON { response in
debugPrint(response)
}