Only last image in array uploads with Alamofire Swift 3 - swift

Question

I need to upload several images to an API at a time. I am using Alamofire to upload images and the API only allows one image to be uploaded per request.
I have an array of images to be uploaded and I am going through the array and making a request each time. Each image appears to upload correctly but then when I check the database only the last image has been uploaded. Each call prints a response with status code 200 and prints "SUCCESSFUL" when it is complete, but only the last in the array actually uploads.
for (index, image) in self.imageArray.enumerated() {
self.uploadImages(photoIndex: index, photo: image.image, fileName: image.imageName, completion: { (true) in
print("SUCCESSFUL")
})
}
I have also tried using a DispatchQueue, but that didn't work either:
let serialQueue = DispatchQueue(label: "serialQueue")
And inside the for loop
serialQueue.async {
//self.uploadImages...
}
I've tried a few more things, with no success. How would I be able to fix this?
Also, here is my uploadImages function
func uploadImages(photoIndex: Int, photo: UIImage, fileName: String, completion: #escaping (_ Success : Bool?) -> ())
{
var success: Bool? = nil
let url : String? = //url
// define parameters
let parameters = [
"photoIndex": "\(photoIndex)"]
Alamofire.upload(multipartFormData: { multipartFormData in
if let imageData = UIImageJPEGRepresentation(photo, 1)
{
multipartFormData.append(imageData, withName: "photo", fileName: fileName, mimeType: "image/png")
}
for (key, value) in parameters {
multipartFormData.append((value.data(using: .utf8))!, withName: key)
}}, to: url!, method: .post,
encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
upload.response { [weak self] response in
guard let strongSelf = self else {
return
}
success = true
debugPrint(response)
completion(success)
}
case .failure(let encodingError):
print("error:\(encodingError)")
}
})
}

Answer 1

Use multipart form data to upload the any media file below is the code snippet to upload multiple video
for (key , value) in arrMediaUpload {
if let image = value as? UIImage {
if let imageData = UIImageJPEGRepresentation(image,0.9) {
print("key => \(key)")
multipartFormData.append(imageData as Data, withName: key, fileName: "\(NSDate().timeIntervalSince1970).jpg", mimeType: "image/*")
}
}
}

Answer 2

I am not that good in Swift so take this answer with a grain of salt but I do not see were you are adding any new keys to your dictionary. So since there is only one key there would be only one value. Therefore the for loop would only be done one time.