Issue with uploading an image using Alamofire(has image as a parameter) - ios

Question

This is how I am trying to upload an image using Alamofire. But the program crashes saying something like...'NSInvalidArgumentException', reason: '-[_SwiftTypePreservingNSNumber dataUsingEncoding:]: unrecognized selector sent to instance... I'm not able figure the exact reason.This is how I'm making the request...
for i in 1...(imageArray.count) {
for img in imageArray {
let url = "http://myapp.com/a/images_upload"
let headers = [ "Content-Type":"application/x-www-form-urlencoded"]
let imageData: Data = (UIImageJPEGRepresentation(img, 0.6) as Data?)!
print(imageData)
let parameters: [String: Any] = [
"access_token": commonVarForAccessToken,
"seller_id": idForNewOldUser,
"product_id": self.productId,
"is_default": "1",
"sequence": i,
"image": imageData ]
Alamofire.upload(multipartFormData: { (multipartFormData) in
print(parameters)
multipartFormData.append(imageData as Data, withName: "home-\(self.index)", fileName: "home-\(self.index)", mimeType: "image/jpeg")
for (key, value) in parameters {
print(key,value)
multipartFormData.append((value as AnyObject).data(using: String.Encoding.utf8.rawValue)!, withName: key)
}
}, to:url)
{ (result) in
switch result {
case .success(let upload, _, _):
upload.uploadProgress(closure: { (Progress) in
//Print progress
})
upload.responseJSON { response in
print(response.request) // original URL request
if let JSON = response.result.value {
print("JSON: \(JSON)")
}
}
case .failure(let encodingError):
print(encodingError)
break
}}}}
Hope somebody can help...Thanks...:)

Answer 1

Try to use this code.It's working for me.
let para: [String: Any]
Alamofire.upload(multipartFormData: {(multipartFormData) in
for i in 0..<uploadImages.count{ multipartFormData.append(UIImageJPEGRepresentation(uploadImages[i], 0.3)!, withName: "image\(i)", fileName: "swift_file\(i).jpeg", mimeType: "image/jpg")
}
for (key, value ) in para {
multipartFormData.append((value).data(using: String.Encoding.utf8)!, withName: key)
}
}, to: apiURL)
{ (result) in
switch result {
case .success(let upload, _,_ ):
upload.uploadProgress(closure: { (progress) in
UILabel().text = "\((progress.fractionCompleted * 100)) %"
print (progress.fractionCompleted * 100)
})
upload.responseJSON { response in
guard ((response.result.value) != nil) else{
print(response.result.error!.localizedDescription)
return
}